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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549





FORM 20-F

(Mark One)

|☐ | REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------------

OR



|☒ | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

For the
fiscal year ended December 31, 2016

OR



|☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For
the transition period from  to

OR



|☐ | SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | -------------------------------------------------------------------------------------------

Date of event requiring this shell company report
 to

Commission file number 001-14928

Santander
UK plc

(Exact name of Registrant as specified in its charter)

England

(Jurisdiction of incorporation or
organization)

2 Triton Square, Regents Place, London NW1 3AN, England

(Address of principal executive offices)

Julian Curtis

2 Triton Square,
Regents Place, London NW1 3AN, England

Tel +44 (0) 870 607 6000

Fax +44 (0) 20 7756 5628

(Name,
Telephone, Email and/or Facsimile number and Address of Company Contact Person)

Securities registered or to be registered pursuant to Section 12(b) of the
Act.



|                                                                                             |  |                        
|-------------------------------------------------------------------------------------------- |  | -----------------------
|1.375% Notes due March 13, 2017, issued by Abbey National Treasury Services plc *            |  | New York Stock Exchange
|Floating Rate Notes due March 13, 2017, issued by Abbey National Treasury Services plc *     |  | New York Stock Exchange
|1.650% Notes due September 29, 2017, issued by Abbey National Treasury Services plc *        |  | New York Stock Exchange
|Floating Rate Notes due September 29, 2017, issued by Abbey National Treasury Services plc * |  | New York Stock Exchange
|3.050% Notes due August 23, 2018, issued by Abbey National Treasury Services plc *           |  | New York Stock Exchange
|Floating Rate Notes due August 24, 2018, issued by Abbey National Treasury Services plc *    |  | New York Stock Exchange
|2.000% Notes due August 24, 2018, issued by Abbey National Treasury Services plc *           |  | New York Stock Exchange
|2.500% Notes due March 14, 2019, issued by Abbey National Treasury Services plc *            |  | New York Stock Exchange
|Floating Rate Notes due March 14, 2019, issued by Abbey National Treasury Services plc *     |  | New York Stock Exchange
|2.350% Notes due September 10, 2019, issued by Abbey National Treasury Services plc *        |  | New York Stock Exchange
|2.375% Notes due March 16, 2020, issued by Abbey National Treasury Services plc *            |  | New York Stock Exchange
|4.000% Notes due March 13, 2024, issued by Abbey National Treasury Services plc *            |  | New York Stock Exchange



|* | From June 1, 2016 Santander UK plc became the issuer in respect of the outstanding notes issued by Abbey National Treasury Services plc under its US SEC registered debt shelf. All notes transferred to Santander UK
plc by Abbey National Treasury Services plc under its US SEC registered debt shelf and all notes issued by Santander UK plc in the future under its US SEC registered debt shelf will be the sole liability of Santander UK plc and are not guaranteed by
any other entity.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Securities registered or to be registered pursuant to Section 12 (g) of the Act. None

Securities registered or to be registered pursuant to Section 15 (d) of the Act.

7.95% Term Subordinated Securities due October 26, 2029

Subordinated Guarantee by Santander UK plc (as successor in interest to Abbey National plc) of the 8.963%
Non-Cumulative Perpetual Preferred Limited Partnership Interests issued by Abbey National Capital LP I

Subordinated Guarantee by Santander UK plc (as successor in interest to Abbey National plc) of the 8.963%
Non-Cumulative Trust Preferred Securities issued by Abbey National Capital Trust I

Indicate the number of outstanding
shares of each of the issuers classes of capital or common stock as of the close of the period covered by the annual report.



|                                                                                             |  |               
|-------------------------------------------------------------------------------------------- |  | --------------
|Ordinary shares of nominal value of £0.10 each*                                              |  | 31,051,768,866
|10 3/8% Non-cumulative Preference Shares of nominal value of £1 each                         |  | 200,000,000   
|8 5/8% Non-cumulative Preference Shares of nominal value of £1 each                          |  | 125,000,000   
|Series A Fixed/Floating Rate Non-cumulative Preference Shares of nominal value of £1000 each |  | 13,780        



|* | All of the issued and outstanding ordinary shares of Santander UK plc are held by Santander UK Group Holdings plc.
|- | ------------------------------------------------------------------------------------------------------------------





Indicate by check mark if the registrant
is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ☒    No  ☐

If this report is an annual or transition report, indicate by check mark if the registrant is not required to
file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.    Yes  ☐    No  ☒

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by
Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the
past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be
submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files).    Yes  ☐    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of accelerated filer
and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):



|                           |  |                      |  |                         
|-------------------------- |  | -------------------- |  | ------------------------
|Large accelerated filer  ☐ |  | Accelerated filer  ☐ |  | Non-accelerated filer  ☒

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:



|             |  |                                                                                                          |  |         
|------------ |  | -------------------------------------------------------------------------------------------------------- |  | --------
|☐  U.S. GAAP |  | ☒  International Financial Reporting Standards as issued
by the International Accounting Standards Board |  | ☐  Other

If Other has been checked in response to the previous question, indicate by check mark which financial statement item the
registrant has elected to follow.    Item 17  ☐    Item 18  ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange
Act).    Yes  ☐    No  ☒









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2016 Annual Report









Santander UK plc

PART OF THE SANTANDER GROUP



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Santander UK plc

Annual Report 2016



2

Strategic report4

Financial review32

Risk review129

Governance130

Directors135

Corporate governance report152

Directors Remuneration report160

Directors report166

Financial statements167

Auditors report173

Primary Financial Statements180

Notes to the Financial Statements268

Shareholder information269

Subsidiaries, joint ventures and associates272

Forward-looking statements273

Selected financial data275

Other information for US investors276

Risk factors299

Risk elements in the loan portfolio302

Taxation for US investors303

Articles of Association304

Iran Threat Reduction and Syria Human Rights Act (ITRA)305

New York Stock Exchange (NYSE) Corporate Governance306

Glossary311

Contact and other information312

Cross-reference to Form 20-F






Important information for readers

Santander UK plc and its subsidiaries
(collectively Santander UK or the Santander UK group) operate primarily in the UK, and are part of Banco Santander (comprising Banco Santander SA and its subsidiaries). Santander UK plc is regulated by the UK Prudential Regulation Authority (PRA)
and the Financial Conduct Authority (FCA) and certain other companies within the Santander UK group are regulated by the FCA.

This Annual Report contains
forward-looking statements that involve inherent risks and uncertainties. Actual results may differ materially from those contained in such forward-looking statements. See Forward-looking statements on page 272.

None of the websites referred to in this Annual Report on Form 20-F for the year ended 31 December 2016 (the Form 20-F), including where a link is provided, nor any
of the information contained on such websites is incorporated by reference in the Form 20-F.





Santander UK plc1



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Annual Report 2016

Strategic report







Strategic report

Santander UK plc (the Company and together with its subsidiaries, Santander UK or the Santander UK group) is required to set out in this report a fair review of its
business and a description of its principal risks and uncertainties, including a balanced and comprehensive analysis of the development and performance of the business in the year and of its position at the end of the year. This information can be
found below and in the following sections of this Annual Report, which are incorporated into and form part of this Strategic report.

Under the UK Companies Act
2006, a safe harbour limits the liability of Directors in respect of statements in and omissions from the Directors Report (for which see page 160), the Strategic report and the Remuneration report. Under English law the Directors would be
liable to the company, but not to any third party, if one or more of these reports contained errors as a result of recklessness or knowing misstatement or dishonest concealment of a material fact, but would otherwise not be liable. Pages 160 to 164
inclusive comprise the Directors Report, pages 2 to 3 inclusive comprise the Strategic report and pages 152 to 155 inclusive comprise the Remuneration report, each of which have been drawn up and presented in accordance with and in reliance
upon English company law and the liabilities of the Directors in connection with these reports shall be subject to the limitations and restrictions provided by such law.

The Directors, in preparing this Strategic report, have complied with section 414C of the Companies Act 2006.

Principal activities and business review

Who we
are

We are a large retail and commercial bank based in the UK and a wholly owned subsidiary of the major global bank Banco Santander. Through our seamless
omni-channel experience we increasingly serve our customers through digital channels, in particular mobile, supported by telephone call centres and a network of 841 branches and 67 Corporate Business Centres.

We play an important role in the UK economy. We help people finance their home and save for the future and support business growth. We employ c. 20,000 people and paid
corporation tax of £507m in 2016.

What we do

We are a simple bank
and create value by serving our customers with financial products and services. Most of our 14 million active UK customers are individuals but we also serve a growing number of small, medium and large companies.

Most of what we do can be described as lending money to borrowers, taking deposits from savers and providing bank accounts. We also offer a full range of investment and
insurance products to households and more specialised services and products to companies.

We help our customers prosper

| |  | We support our personal customers through all the stages of their lives and champion British businesses.
|- |  | --------------------------------------------------------------------------------------------------------

| |  | We focus on our customers to develop more loyal and sustainable relationships. We want our customers to do more business with us.
|- |  | ---------------------------------------------------------------------------------------------------------------------------------

We create sustainable value

| |  | We generate income by earning a margin on our products and by charging a fee for our services.
|- |  | ----------------------------------------------------------------------------------------------

| |  | We efficiently manage the large infrastructure of people, property, technology and other assets that support our business.
|- |  | --------------------------------------------------------------------------------------------------------------------------

We protect value

| |  | We invest to ensure we can make the right lending decisions and to manage the risks we face.
|- |  | --------------------------------------------------------------------------------------------

| |  | We provide for credit losses which may occur if things dont go as planned.
|- |  | ---------------------------------------------------------------------------

We stand out from the crowd

| |  | Improving customer experience
|- |  | -----------------------------

| |  | Market-leading 1I2I3 Current Account driving new primary relationships customers and significant growth in deposits
|- |  | -------------------------------------------------------------------------------------------------------------------

| |  | Strong brand known for innovation and with a trusted reputation, less affected by legacy and litigation issues
|- |  | --------------------------------------------------------------------------------------------------------------

| |  | Profitable and paying dividends through the financial crisis
|- |  | ------------------------------------------------------------

| |  | Wholly-owned subsidiary benefiting from significant synergies and strengths from being part of a well-diversified global bank
|- |  | -----------------------------------------------------------------------------------------------------------------------------

| |  | Strong employee engagement and advocacy
|- |  | ---------------------------------------

Development and performance of our business in 2016

Information on the development and performance of our business in the year is set out in the Income statement review section of the Financial review.

Our position at 31 December 2016

Information on our position at the end
of the year is set out in the Balance sheet review section of the Financial review.

Customer focused ring-fence model

On 22 December 2016, the Board of Santander UK approved a revised business model and legal entity structure to comply with the ring-fencing requirements in the UK.
The revised model provides greater certainty for our customers while ensuring minimal disruption and a smooth transition for those customers impacted. With the Banking Reform Act due for implementation by 1 January 2019, and in light of the
changeable macro environment, the Board concluded that we can better serve our customers with a wide ring-fence structure, rather than the narrow ring-fence originally envisaged. Under this model Santander UK plc, the
ring-fenced bank, will serve our retail, commercial and corporate customers. This also maintains longer term flexibility and leads to lower overall cost with the migration impacting fewer customers. Abbey National Treasury Services plc will no
longer constitute the non-ring-fenced bank and its activities will be revised as part of the new ring-fencing model.

We intend to complete the implementation of our
ring-fence plans in advance of the 2019 legislative deadline, subject to regulatory and court approvals, and various other authorisations.





2Santander UK
plc



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| |  |  |  |  |  |  |  |  |  |  |  |  |  | ----------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |  |  |  |  |                 
| |  |  |  |  |  |  |  |  |  |  |  |  |  | Strategic
report



Uncertain macro environment

The relatively stable economic backdrop we saw in the first half of 2016 became more volatile as the year progressed with the outcome of the EU referendum in June leading
to some short-term market variability. After this initial period, consumer confidence measures recovered and the second half of the year saw continued steady economic growth. While the depreciation of sterling may well have a positive effect on the
external net trade contribution to economic growth, it is expected to lead to higher inflation. The UK economy ended the year with 16 consecutive quarters of GDP growth and a stable labour market with the unemployment rate at around 5%  close
to pre-recession levels 1. With inflation averaging just below 1% in 2016, this provided some support for household real incomes at a time when nominal earnings growth remained relatively subdued.

The consensus expectation for 2017 sees slower growth with continued low interest rates alongside the possibility of rising unemployment. Inflation is expected to breach
the Bank of England target of 2% in 2017 as the impact of rising oil prices and sterling depreciation is felt. Mortgage market lending growth ended 2016 at 3%, its strongest end to a year since 2008, with house prices continuing to rise, albeit at a
slower pace than in the previous year 3. Following an extended period of contraction, there has been an increase in bank lending to companies.

Demanding
regulatory change agenda

Regulation in the UK remains focused on three broad objectives  making banks stronger, supporting positive customer outcomes, and
encouraging greater competition. We support the objectives of UK policy makers and work hard to ensure we comply with new regulations while welcoming steps to combat customer inertia. During 2016 there were noteworthy developments on several
significant issues which remain in focus for UK banks going forward. These include customer redress related to PPI, the requirement for large UK banks to ring-fence their retail banking operations and the regulatory requirement to build loss
absorbing capacity. We have also worked with regulators throughout 2016 on a number of developments related to payments and innovation. These are intended to make it easier for customers to access banking services. We expect our returns going
forward will continue to be impacted by increased regulatory compliance costs as well as the more onerous taxation regime. However, as a full-service scale challenger with a strong customer focus, we remain confident that we can continue to grow our
business. We plan to further develop loyal relationships with our personal and corporate customer by living up to our commitment to be Simple, Personal and Fair.

2017 outlook remains uncertain

We expect the slowdown of the UK economy, seen
this year to continue as economic uncertainties prevail. We expect net interest margin to remain broadly stable, predicated on interest rate not reducing further, with continued competitive pressures on asset margins as well as SVR attrition. Cost
management remains a key focus as we continue to invest and grow, while capturing future operational efficiencies. We expect our net mortgage lending to be broadly in line with the market, and the decline in SVR balances to be slightly lower than
the net £7bn reduction in 2016. We expect our corporate lending to be slower than in recent years, consistent with forecasted slowdown in the UK economic growth and as we actively manage exposures to certain segments in line with our proactive
risk management practices.

By building upon our strong foundations, we are well positioned to succeed despite the uncertain macro environment.

Our principal risks and uncertainties

Information on
our principal risks and uncertainties is set out in the Risk review by type of risk, with more detail by business segment. When reading the Risk review and the other sections of the Annual Report, you should refer to the Forward-looking
statements section in the Shareholder information.

Key performance indicators

The directors of the Companys immediate parent, Santander UK Group Holdings plc, manage the operations of the Santander UK Group Holdings plc group (which includes
the Santander UK group) on a business division basis. Key performance indicators are not set, monitored or managed at the Santander UK group level. As a result, the Companys Directors believe that analysis using key performance indicators for
the Company is not necessary or appropriate for an understanding of the development, performance or position of the Company. The development performance and position of the business of the Santander UK group, mainly at a consolidated level, is set
out in the Financial Review. The key performance indicators of the Santander UK Group Holdings plc group can be found on pages 12 and 13 of its 2016 Annual Report, which does not form part of this report.

By Order of the Board

Nathan Bostock

Director

22 February 2017





Santander UK plc3



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Financial review





5

Income statement review5

Summarised Consolidated Income Statement7

Profit before tax by segment8

- Retail Banking11

- Commercial Banking14

- Global Corporate Banking16

- Corporate Centre18

Balance sheet review18

Summarised Consolidated Balance Sheet20

Reconciliation to classifications in the Consolidated Balance Sheet21

Securities22

Loans and advances to banks23

Loans and advances to customers24

Derivative assets and liabilities25

Tangible fixed assets25

Retirement benefit plans25

Deposits by banks26

Deposits by customers27

Short-term borrowings28

Debt securities in issue28

Contractual obligations28

Off-balance sheet arrangements29

Interest rate sensitivity30

Average balance sheet31

Cash flows






4Santander UK
plc



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| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





Income statement review

SUMMARISED CONSOLIDATED INCOME STATEMENT



|                                                                    |  |         |         |  |         |  |         |         |  |  |         | 
|------------------------------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- | 
|                                                                    |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m | 
|Net interest income                                                 |  |         | 3,582   |  |         |  | 3,575   |         |  |  | 3,434   | 
|Non-interest
income(1)                                              |  |         | 1,213   |  |         |  | 998     |         |  |  | 1,036   | 
|Total operating income                                              |  |         | 4,795   |  |         |  | 4,573   |         |  |  | 4,470   | 
|Operating expenses before impairment losses, provisions and
charges |  |         | (2,414) |  |         |  | (2,400) |         |  |  | (2,397) | 
|Impairment losses on loans and advances                             |  |         | (67)    |  |         |  | (66)    |         |  |  | (258)   | 
|Provisions for other liabilities and charges                        |  |         | (397)   |  |         |  | (762)   |         |  |  | (416)   | 
|Total operating impairment losses, provisions and
charges           |  |         | (464)   |  |         |  | (828)   |         |  |  | (674)   | 
|Profit before tax                                                   |  |         | 1,917   |  |         |  | 1,345   |         |  |  | 1,399   | 
|Tax on profit                                                       |  |         | (598)   |  |         |  | (381)   |         |  |  | (289)   | 
|Profit after tax for the year                                       |  |         | 1,319   |  |         |  | 964     |         |  |  | 1,110   | 
|                                                                    |  |         |        
|Attributable to:                                                    |  |         |         |  |         |  |         |         |  |  |         | 
|Equity holders of the parent                                        |  |         | 1,292   |  |         |  | 939     |         |  |  | 1,110   | 
|Non-controlling interests                                           |  |         | 27      |  |         |  | 25      |         |  |  | -       | 

|(1) | Comprised of Net fee and commission income and Net trading and other income.
|--- | ----------------------------------------------------------------------------

2016 compared to 2015

Profit before tax was up 43% at £ 1,917m, with solid income growth, strong cost discipline and lower conduct costs. By income statement line, the movements were:



|- | Net interest income was up £7m, driven by strong retail liability margin improvement in Q4 2016 and increased lending that offset continued SVR attrition and asset margin pressure. NIM was 1.48% for the year,
compared to 1.53% in 2015.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income at £1,213m, up 22%, benefited from a £119m gain on the sale of our Visa Europe Limited shareholding in Q2 2016 and higher 1I2I3 Current Account fees.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges were broadly flat at £2,414m, with operational efficiency absorbing investment in business growth, regulatory costs, and the ongoing enhancements
to our digital channels. Intangible asset write-downs for the year primarily relate to a multi-entity banking platform developed for our non-ring-fenced bank under the original Banking Reform structure.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment losses on loans and advances were broadly flat at £67m, with a single loan in Global Corporate Banking that moved to non-performance in Q2 2016 offset by lower write-offs and charges. Overall, all loan
portfolios continued to perform well.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges decreased 48%, mainly due to lower PPI, including Plevin, provision charges.
|- | -------------------------------------------------------------------------------------------------------------------------

We made an additional £144m provision charge in the year, which included our best estimate of Plevin related claim costs and a £30m charge
for a specific portfolio under a past business review. With the FCA consultation expected to close in the first quarter of 2017, we have assessed the adequacy of our provision and applied the principles published in the August 2016 FCA consultation
paper to our current assumptions. We will continue to review our provision levels in respect of recent claims experience and once the final FCA guidance is published, and it is possible further PPI-related provisions will be required in future
years.

Monthly utilisation during the year, excluding the impact of past business review activity, was slightly higher than the 2015 average and in
line with our assumptions. We will continue to review our provision levels in respect of recent claims experience and once the final FCA guidance is published.

Tax
on profit increased 57% to £598m with the effective tax rate up from 28% to 31%. These increases are primarily driven by the 8% bank corporation tax surcharge and higher profits, partially offset by the tax impact of lower conduct provision
charges in 2016.





Santander UK plc5



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2015 compared to 2014

Profit before tax decreased by £54m to £1,345m in 2015 (2014: £1,399m). By income statement line, the movements were:



|- | Net interest income increased by £141m or 4% to £3,575m in 2015 (2014: £3,434m). This was driven by liability margin improvement and increased retail and corporate lending.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income decreased by £38m or 4% to £998m in 2015 (2014: £1,036m), with a reduction in Retail Banking net banking fees. This was partially offset by higher international payment income,
banking and lending fees in Commercial Banking, and revenues from derivative and cash sales activities in Global Corporate Banking.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges increased by £3m to £2,400m in 2015 (2014: £2,397m), as we continue to absorb investment in business growth, regulatory compliance
and project costs (including Banking Reform), and the continued enhancements to our digital channels.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment losses on loans and advances decreased by £192m to £66m in 2015 (2014: £258m) with retail and corporate loans performing well in a supportive economic environment. Retail Banking benefited
from a £125m release in mortgage provisions as a result of the growth in house prices and the continued strong credit quality of the portfolio with lower write-offs and charges. Commercial Banking, Global Corporate Banking and Corporate Centre
continued to perform well and also benefited from supportive market conditions, with releases of £65m arising from loan disposals and restructuring.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges increased by £346m or 83% to £762m in 2015 (2014: £416m), predominantly due to PPI provision charges of £450m and £95m, for 2015 and 2014,
respectively. Other provisions include costs for non-PPI related conduct remediation and other operational loss provisions, restructuring charges and vacant property costs.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

When assessing the adequacy of our PPI provision, we have applied the November 2015 FCA consultation paper including the Plevin case to our current
assumptions. The additional £450m provision represents our best estimate of the remaining redress and costs. The additional provision is predicated on the probable two year deadline by which customers would need to make their PPI complaints
and the anticipated increase in claim volumes as a result of the finite claim period.

Monthly utilisation, excluding pro-active customer contact,
during 2015 was £10m per month (including related costs), against an average of £9m in 2014. While we saw a reduction in PPI redress in the first half of the year, we have seen an increase in the third quarter aligning with industry
trends, with the fourth quarter remaining flat.

Other conduct provisions included £43m of additional provisions taken in the third quarter of
2015 relating to wealth and investment products. The additional provisions were taken following the agreement of the revised approach to redressing portfolio and structured investment customers with the FCA.

Regulatory costs relating to the FSCS of £76m (2014: £91m) and the UK Bank Levy of £101m (2014: £74m) were charged in the year.
See Note 33 to the Consolidated Financial Statements.

The taxation charge increased by 32% to £381m (2014: £289m), primarily due to higher operating
income and the disallowance of certain conduct provisions for tax purposes in 2015. This was partially offset by the reduction in the main corporation tax rate in 2015. The effective tax rate for 2015, based on profit before tax was 28.3% (2014:
20.7%).





6Santander UK
plc



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| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





Critical factors affecting results

The preparation of our Consolidated Financial Statements requires management to make estimates and judgements that affect the reported amount of assets and liabilities at
the balance sheet date and the reported amount of income and expenses during the reporting period. Management evaluates its estimates and judgements on an ongoing basis. Management bases its estimates and judgements on historical experience and
other factors believed to be reasonable under the circumstances. Actual results may differ from these estimates under different assumptions or conditions.

Estimates
and judgements that are considered important to the portrayal of our financial condition including, where applicable, quantification of the effects of reasonably possible ranges of such estimates are set out in Critical Accounting Policies and
Areas of Significant Management Judgement in Note 1 to the Consolidated Financial Statements.

The rest of this section contains a summary of the results, and
commentary thereon, by income statement line item for each segment.

Basis of results presentation

The segmental information in this Annual Report reflects the reporting structure in place at the reporting date in accordance with which the segmental information in Note
2 to the Consolidated Financial Statements has been presented.

PROFIT BEFORE TAX BY SEGMENT



|                                                                                |  |                   |         |  |                       |  |       |                             |  |  |                     |  |  |          |       |  |  |  |         | 
|------------------------------------------------------------------------------- |  | ----------------- | ------- |  | --------------------- |  | ----- | --------------------------- |  |  | ------------------- |  |  | -------- | ----- |  |  |  | ------- | 
|2016                                                                            |  | Retail
Banking £m |         |  | Commercial
Banking £m |  |       | Global Corporate
Banking £m |  |  | Corporate
Centre £m |  |  | Total
£m |      
|Net interest income/(expense)                                                   |  |                   | 3,153   |  |                       |  | 405   |                             |  |  | 81                  |  |  |          | (57)  |  |  |  | 3,582   | 
|Non-interest
income(1)                                                          |  |                   | 580     |  |                       |  | 84    |                             |  |  | 320                 |  |  |          | 229   |  |  |  | 1,213   | 
|Total operating income                                                          |  |                   | 3,733   |  |                       |  | 489   |                             |  |  | 401                 |  |  |          | 172   |  |  |  | 4,795   | 
|Operating expenses before impairment losses, provisions and
charges             |  |                   | (1,800) |  |                       |  | (215) |                             |  |  | (280)               |  |  |          | (119) |  |  |  | (2,414) | 
|Impairment (losses)/releases on loans and advances                              |  |                   | (20)    |  |                       |  | (29)  |                             |  |  | (21)                |  |  |          | 3     |  |  |  | (67)    | 
|Provisions for other liabilities and charges                                    |  |                   | (338)   |  |                       |  | (26)  |                             |  |  | (12)                |  |  |          | (21)  |  |  |  | (397)   | 
|Total operating impairment losses, provisions and
charges                       |  |                   | (358)   |  |                       |  | (55)  |                             |  |  | (33)                |  |  |          | (18)  |  |  |  | (464)   | 
|Profit before tax                                                               |  |                   | 1,575   |  |                       |  | 219   |                             |  |  | 88                  |  |  |          | 35    |  |  |  | 1,917   | 
|                                                                                |  |                   |         |  |                      
|2015                                                                            |  |                   |         |  |                       |  |       |                             |  |  |                     |  |  |          |      
|Net interest income                                                             |  |                   | 3,077   |  |                       |  | 368   |                             |  |  | 72                  |  |  |          | 58    |  |  |  | 3,575   | 
|Non-interest
income(1)                                                          |  |                   | 536     |  |                       |  | 94    |                             |  |  | 307                 |  |  |          | 61    |  |  |  | 998     | 
|Total operating income                                                          |  |                   | 3,613   |  |                       |  | 462   |                             |  |  | 379                 |  |  |          | 119   |  |  |  | 4,573   | 
|Operating expenses before impairment losses, provisions and
(charges)/releases  |  |                   | (1,898) |  |                       |  | (217) |                             |  |  | (287)               |  |  |          | 2     |  |  |  | (2,400) | 
|Impairment (losses)/releases on loans and advances                              |  |                   | (90)    |  |                       |  | (25)  |                             |  |  | 13                  |  |  |          | 36    |  |  |  | (66)    | 
|Provisions for other liabilities and (charges)/releases                         |  |                   | (728)   |  |                       |  | (23)  |                             |  |  | (14)                |  |  |          | 3     |  |  |  | (762)   | 
|Total operating impairment (losses)/releases, provisions and
(charges)/releases |  |                   | (818)   |  |                       |  | (48)  |                             |  |  | (1)                 |  |  |          | 39    |  |  |  | (828)   | 
|Profit before tax                                                               |  |                   | 897     |  |                       |  | 197   |                             |  |  | 91                  |  |  |          | 160   |  |  |  | 1,345   | 
|                                                                                |  |                   |         |  |                      
|2014                                                                            |  |                   |         |  |                       |  |       |                             |  |  |                     |  |  |          |      
|Net interest income                                                             |  |                   | 3,041   |  |                       |  | 279   |                             |  |  | 75                  |  |  |          | 39    |  |  |  | 3,434   | 
|Non-interest
income(1)                                                          |  |                   | 569     |  |                       |  | 80    |                             |  |  | 300                 |  |  |          | 87    |  |  |  | 1,036   | 
|Total operating income                                                          |  |                   | 3,610   |  |                       |  | 359   |                             |  |  | 375                 |  |  |          | 126   |  |  |  | 4,470   | 
|Operating expenses before impairment losses, provisions and
charges             |  |                   | (1,850) |  |                       |  | (200) |                             |  |  | (260)               |  |  |          | (87)  |  |  |  | (2,397) | 
|Impairment (losses)/releases on loans and advances                              |  |                   | (203)   |  |                       |  | (76)  |                             |  |  | 4                   |  |  |          | 17    |  |  |  | (258)   | 
|Provisions for other liabilities and charges                                    |  |                   | (398)   |  |                       |  | (9)   |                             |  |  | (9)                 |  |  |          | -     |  |  |  | (416)   | 
|Total operating impairment (losses)/releases, provisions and
charges            |  |                   | (601)   |  |                       |  | (85)  |                             |  |  | (5)                 |  |  |          | 17    |  |  |  | (674)   | 
|Profit before tax                                                               |  |                   | 1,159   |  |                       |  | 74    |                             |  |  | 110                 |  |  |          | 56    |  |  |  | 1,399   | 

|(1) | Comprised of Net fee and commission income and Net trading and other income.
|--- | ----------------------------------------------------------------------------





Santander UK plc7



---

##### Table of Contents















RETAIL BANKING

Retail Banking offers a wide range of products and financial services to individuals and small businesses through a network of branches and ATMs, as well as through
telephony, digital, mobile and intermediary channels. Retail Banking also serves business customers with an annual turnover of up to £6.5m via business banking as well as Santander Consumer Finance, predominantly a vehicle finance business.
Its main products are residential mortgage loans, savings and current accounts, credit cards and personal loans as well as insurance policies.

Summarised income statement



|                                                                    |  |         |         |  |         |  |         |         |  |  |         | 
|------------------------------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- | 
|                                                                    |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m | 
|Net interest income                                                 |  |         | 3,153   |  |         |  | 3,077   |         |  |  | 3,041   | 
|Non-interest income                                                 |  |         | 580     |  |         |  | 536     |         |  |  | 569     | 
|Total operating income                                              |  |         | 3,733   |  |         |  | 3,613   |         |  |  | 3,610   | 
|Operating expenses before impairment losses, provisions and
charges |  |         | (1,800) |  |         |  | (1,898) |         |  |  | (1,850) | 
|Impairment losses on loans and advances                             |  |         | (20)    |  |         |  | (90)    |         |  |  | (203)   | 
|Provisions for other liabilities and charges                        |  |         | (338)   |  |         |  | (728)   |         |  |  | (398)   | 
|Total operating impairment losses, provisions and
charges           |  |         | (358)   |  |         |  | (818)   |         |  |  | (601)   | 
|Profit before tax                                                   |  |         | 1,575   |  |         |  | 897     |         |  |  | 1,159   | 

2016 compared to 2015

Profit before tax
increased by £678m to £1,575m in 2016 (2015: £897m). By income statement line, the movements were:



|- | Net interest income increased 2%, with higher asset volumes and liability margin improvement offsetting continued SVR mortgage attrition and pressure on new lending margins.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income increased 8%, with higher 1I2I3 Current Account fees, partially offset by reduced investment fees and lower credit card interchange income.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges were down 5% with operational efficiencies, partially offset by continued investment in business growth and digital enhancements.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment losses on loans and advances decreased 78%, with lower mortgage impairment releases and write-offs. Mortgage releases of £120m (2015: £125m) were driven by the continued rise in house prices and
improving quality of the portfolio, as well as an update to our model.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges decreased 54%, mainly due to lower conduct costs and FSCS charge in 2016.
|- | ----------------------------------------------------------------------------------------------------------------------

We made an additional £144m provision charge in the year, which included our best estimate of Plevin related claim costs and a £30m charge
for a specific portfolio under a past business review. With the FCA consultation expected to close in the first quarter of 2017, we have assessed the adequacy of our provision and applied the principles published in the August 2016 FCA consultation
paper to our current assumptions. We will continue to review our provision levels in respect of recent claims experience and once the final FCA guidance is published, and it is possible further PPI-related provisions will be required in future
years.

Monthly utilisation during the year, excluding the impact of past business review activity, was slightly higher than the 2015 average and in
line with our assumptions. We will continue to review our provision levels in respect of recent claims experience and once the final FCA guidance is published.

2015 compared to 2014

Profit before tax decreased by £262m to
£897m in 2015 (2014: £1,159m). By income statement line, the movements were:



|- | Net interest income increased by £36m to £3,077m in 2015 (2014: £3,041m) driven by management focus on reducing the cost of retail liabilities, the commencement of the PSA cooperation and increased
lending. These increases were partially offset by reduced mortgage stock margins and new lending margin pressures.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income decreased by £33m to £536m in 2015 (2014: £569m). The decrease reflected lower net banking fee income through overdraft fees.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges increased by £48m to £1,898m in 2015 (2014: £1,850m). The increase was driven by continued investment in the growth of the business,
digital enhancements and regulatory compliance costs and increased consumer finance costs due to the commencement of the PSA cooperation, partially offset by strong cost management discipline and network efficiencies.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment losses on loans and advances decreased by £113m to £90m in 2015 (2014: £203m). This was largely due to a release of £125m in mortgages driven by the growth in house prices and the
continued strong credit quality of the portfolio with lower write-offs and charges.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges increased by £330m to £728m in 2015 (2014: £398m). This was predominately due to an additional provision of £450m (2014: £95m) taken in 2015
relating to PPI. When assessing the adequacy of our provision, we have applied the November 2015 FCA consultation paper including the Plevin case to our current assumptions. The additional £450m provision represents our best estimate of the
remaining redress and costs. The additional provision is predicated on the probable two year deadline by which customers would need to make their PPI complaints and the anticipated increase in claim volumes as a result of the finite claim period.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





8Santander UK
plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





|- | Monthly utilisation, excluding pro-active customer contact, during 2015 was £10m per month (including related costs), against an average of £9m in 2014. While we saw a reduction in PPI redress in the
first half of the year, we have seen an increase in the third quarter aligning with industry trends, with the fourth quarter remaining flat.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Other conduct provisions included £43m of additional provisions taken in the third quarter of 2015 relating to wealth and investment products. The
additional provisions were taken following the agreement of the revised approach to redressing portfolio and structured investment customers with the FCA.

Regulatory costs relating to the FSCS of £76m (2014: £91m) and the UK Bank Levy of £66m (2014: £50m) were charged in the year.
See Note 33 to the Consolidated Financial Statements.

Balances



|                                     |  |          |       |  |          |  |       |          |  |  |       | 
|------------------------------------ |  | -------- | ----- |  | -------- |  | ----- | -------- |  |  | ----- | 
|                                     |  | 2016
£bn |       |  | 2015
£bn |  |       | 2014
£bn | 
|Total assets                         |  |          | 175.7 |  |          |  | 174.1 |          |  |  | 165.9 | 
|Customer loans                       |  |          | 168.6 |  |          |  | 167.0 |          |  |  | 161.0 | 
|- of which mortgages                 |  |          | 154.3 |  |          |  | 152.8 |          |  |  | 150.1 | 
|- of which business banking          |  |          | 2.3   |  |          |  | 2.3   |          |  |  | 2.6   | 
|- of which consumer finance          |  |          | 6.8   |  |          |  | 6.3   |          |  |  | 3.3   | 
|- of which other unsecured lending   |  |          | 5.2   |  |          |  | 5.6   |          |  |  | 5.0   | 
|Risk-weighted assets (RWAs)          |  |          | 43.6  |  |          |  | 44.3  |          |  |  | 40.1  | 
|Customer deposits                    |  |          | 148.1 |  |          |  | 140.3 |          |  |  | 132.9 | 
|- of which savings                   |  |          | 64.7  |  |          |  | 70.3  |          |  |  | 73.8  | 
|- of which current accounts          |  |          | 64.8  |  |          |  | 53.2  |          |  |  | 41.1  | 
|- of which business banking accounts |  |          | 10.0  |  |          |  | 8.9   |          |  |  | 8.6   | 
|- of which other retail products     |  |          | 8.6   |  |          |  | 7.9   |          |  |  | 9.4   | 

2016 compared to 2015

|- | Total assets increased to £175.7bn at 31 December 2016 (2015: £174.1bn).
|- | ------------------------------------------------------------------------



|- | Mortgage net lending was £1.5bn, compared to £2.7bn in 2015. Strong net inflows in Q116 and Q416 were driven by Buy-to-let (BTL) lending and lower redemptions, respectively. These flows were partially offset
by management pricing actions that impacted new mortgage approvals as we continue to focus on customer service. Mortgage retention was c. 80%.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Business banking balances were flat, impacted by the economic uncertainty and resulting slowdown in activity.
|- | -------------------------------------------------------------------------------------------------------------



|- | Consumer finance balances rose 8% with higher retail loans and car dealer funding, in contrast to other unsecured lending balances, down 7% in an increasingly competitive market.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Customer deposits increased £7.8bn as current account balances continued to grow, mainly through 1I2I3 Current Account, with a net inflow of £11.6bn in total current account balances. This growth was
partially offset by lower demand for savings products with balances reducing £5.6bn.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Retail Banking deposit spread improved to (0.57)% when compared to (0.63)% in 2015.
|- | -----------------------------------------------------------------------------------

2015 compared to 2014

|- | Total assets increased to £174.1bn at 31 December 2015 (2014: £165.9bn), mainly due to the increase in customer loans described below.
|- | --------------------------------------------------------------------------------------------------------------------------------------



|- | Customer loans increased to £167.0bn at 31 December 2015 (2014: £161.0bn). Mortgage customer loans increased by £2.7bn to £152.8bn at 31 December 2015 (2014: £150.1bn) driven by
strong approval volumes and mortgage retention, with approximately 80% of maturities retained on new Santander UK mortgages, offsetting the SVR attrition of £8.1bn (2014: £8.4bn).
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Other unsecured lending balances, which include bank overdrafts, unsecured personal loans, and credit cards increased 12% to £5.6bn at 31 December 2015 (2014: £5.0bn). This was in line with the 1I2I3
World loyalty strategy.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Business banking balances decreased, reflecting the competitive environment.
|- | ----------------------------------------------------------------------------



|- | Consumer finance balances increased 91% to £6.3bn at 31 December 2015 (2014: £3.3bn), as we continued to strengthen our broad and well-diversified vehicle finance franchise through the PSA cooperation
commencement.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | RWAs increased by 10.5% to £44.3bn at 31 December 2015 (2014: £40.1bn), largely reflecting the commencement of the PSA cooperation, accounting for £2.5bn of RWAs we consolidated, and growth in
mortgages.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Customer deposits increased 6% to £140.3bn at 31 December 2015 (2014: £132.9bn) as current account balances continued to grow strongly, mainly through our 1I2I3 Current Account which was the main driver
of a net inflow of £12.1bn in current account balances. This was partially offset by lower demand for savings products with balances reducing £3.5bn.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Retail Banking deposit spread improved to (0.63)% in 2015 (2014: (0.76)%), mainly due to maturing higher cost ISAs and originating new lower cost Fixed Term Bonds.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc9



---

##### Table of Contents















Business volumes



|                               |  |          |       |  |          |  |       |          |  |  |       | 
|------------------------------ |  | -------- | ----- |  | -------- |  | ----- | -------- |  |  | ----- | 
|                               |  | 2016
£bn |       |  | 2015
£bn |  |       | 2014
£bn | 
|Mortgage gross lending         |  |          | 25.8  |  |          |  | 26.5  |          |  |  | 26.3  | 
|Mortgage net lending           |  |          | 1.5   |  |          |  | 2.7   |          |  |  | 2.0   | 
|Business banking net lending   |  |          | -     |  |          |  | (0.3) |          |  |  | (0.4) | 
|Consumer finance gross lending |  |          | 3.1   |  |          |  | 3.0   |          |  |  | 1.6   | 
|Consumer finance net lending   |  |          | 0.5   |  |          |  | 0.5   |          |  |  | 0.2   | 
|Other unsecured net lending    |  |          | (0.4) |  |          |  | 0.6   |          |  |  | 0.8   | 

2016 compared to 2015

|- | Mortgage gross lending was £25.8bn and we helped 25,300 first-time buyers (£4.2bn of gross lending) purchase their new home. Interest-only mortgage balances decreased £2.8bn to £52.3bn (2015:
£55.1bn) while BTL mortgage balances increased £1.6bn to £6.6bn (2015: £5.0bn).
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We continued to build our BTL
book by focusing on non-professional landlords, as this segment is closely aligned with residential mortgages and accounts for the majority of the volume in the BTL market. In 2016, we completed 12,400 BTL mortgages, representing 9% of the value of
our new business flow, at an average LTV of 67%. In line with the market, we saw a spike in BTL mortgages ahead of the April 2016 stamp duty increase. BTL net lending was lower in the quarters following the stamp duty increase, but remained
positive.



|- | Business banking net lending was impacted by the continued competitive environment and economic uncertainty.
|- | ------------------------------------------------------------------------------------------------------------



|- | Consumer finance gross lending was £3,111m and net lending £473m, with higher retail loans and car dealer funding.
|- | ------------------------------------------------------------------------------------------------------------------



|- | Other unsecured net lending balances, decreased due to lower new credit card sales in an increasingly competitive environment.
|- | ------------------------------------------------------------------------------------------------------------------------------

2015 compared to 2014

|- | Mortgage gross lending increased slightly to £26.5bn in 2015 (2014: £26.3bn), with applications up 5% over the year, while we helped 30,900 first-time buyers (£4.5bn of gross lending) purchase their
new home. Interest-only mortgage balances decreased £1.8bn to £55.1bn (2014: £56.9bn) while BTL mortgage balances increased by £1.9bn to £5.0bn (2014: £3.1bn).
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We continued to build our BTL book, which represented 3% of our total mortgage book, focusing on non-professional landlords, as this segment is more
closely aligned with residential mortgages, and also accounts for the majority of the BTL market. In 2015, we completed 12,700 BTL mortgages, representing 10% of new business flow, at an average LTV of 70%.



|- | Business banking net lending was broadly flat, reflecting the competitive environment.
|- | --------------------------------------------------------------------------------------



|- | Consumer finance gross lending was £3.0bn (2014: £1.6bn) and net lending was £0.5bn (2014: £0.2bn), driven by increases in new car registrations and an expansion in business streams, including
motorbikes and leisure vehicles. Excluding the PSA cooperation, gross lending was £1.7bn and net lending £0.2bn.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Other unsecured net lending decreased by £0.2bn to £0.6bn (2014: £0.8bn), with continued strong growth in 1I2I3 Credit Card balances more than offset by lower unsecured personal loan (UPL) lending in
the more competitive market environment.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Business development in 2016



|- | Our digital transformation programme continues with the July 2016 release of an enhanced online credit card application process. Additionally, in September 2016 we launched Android Pay, to complement our existing Apple
Pay service, and the Spendlytics app for Android. We also simplified our customer processes with an online mortgage application tool that works on any device. Furthermore, in November 2016 we improved our mobile app, so that customers can make and
amend payments to new or existing payees and create new standing orders on their mobiles. We continue to work with a number of Fintech companies to identify innovative solutions. One such example is our partnership with Kabbage, who provide the
technology platform for our Working Capital Loans solution that gives UK SMEs access to same day funding.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | We continued to grow our digital customer base, gaining an average of 1,400 new active mobile users per day for a total of 2.2 million mobile customers, of which 1.4 million exclusively use our mobile app in
their transactions with us. In the same period 41% of our mortgages were retained online, 36% of total openings of current accounts and 40% of credit card openings were made through digital channels. Additionally, 26% of Business Current Accounts
were opened via a digital channel, following the successful launch of a shorter and digitalised business banking application form.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | 1I2I3 World customers continued to increase, although at a slower rate, with 483,000 new customers in the year. A reduction in 1I2I3 openings has been partially offset by an increase in openings of alternative products,
whilst, as anticipated, there was an increase in 1I2I3 account closures following the fee and interest rate changes which took effect in January 2016 and November 2016, respectively. We believe the 1I2I3 Current Account continues to be an
outstanding proposition for many customers.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | In October 2016, we launched the All in One Credit Card and the Zero Credit Card to meet a wider range of customers needs and renamed the Santander Credit Card the Everyday Credit Card. The 1I2I3 Credit Card is no
longer available to new customers.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | We are growing our Wealth Management business, building on existing foundations, and expanding our digital proposition to improve customer loyalty further. In June 2016 we launched Investment Hub, a new digital platform
which enables customers to service their investments online, and gives them access to over 1,500 funds from Santander Asset Management and other leading fund managers. Furthermore, in November 2016 we migrated c. 200,000 investment customers and
over £5bn of assets under management onto the Investment Hub. The investment platform complements our Financial Planning service that offers investment advice to customers on a range of products via our branch network.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





10Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





COMMERCIAL BANKING

Commercial Banking offers a wide range of products and financial services to customers through a network of regional Corporate Business Centres (CBCs) and through
telephony and digital channels. The management of our customers is organised across two relationship teams - the Regional Corporate Bank (RCB) that covers trading businesses with annual turnover from £6.5m to £500m and Specialist Sector
Groups (SSG) that cover real estate, housing finance, education, healthcare, and hotels. Commercial Banking products and services include loans, bank accounts, deposits, treasury services, invoice discounting, cash transmission, trade finance and
asset finance.

Summarised income statement



|                                                                    |  |         |       |  |         |  |       |         |  |  |       | 
|------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                                                    |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m | 
|Net interest income                                                 |  |         | 405   |  |         |  | 368   |         |  |  | 279   | 
|Non-interest income                                                 |  |         | 84    |  |         |  | 94    |         |  |  | 80    | 
|Total operating income                                              |  |         | 489   |  |         |  | 462   |         |  |  | 359   | 
|Operating expenses before impairment losses, provisions and
charges |  |         | (215) |  |         |  | (217) |         |  |  | (200) | 
|Impairment losses on loans and advances                             |  |         | (29)  |  |         |  | (25)  |         |  |  | (76)  | 
|Provisions for other liabilities and charges                        |  |         | (26)  |  |         |  | (23)  |         |  |  | (9)   | 
|Total operating impairment losses, provisions and
charges           |  |         | (55)  |  |         |  | (48)  |         |  |  | (85)  | 
|Profit before tax                                                   |  |         | 219   |  |         |  | 197   |         |  |  | 74    | 

2016 compared to 2015

Profit before tax
increased by £22m to £219m in 2016 (2015: £197m). By income statement line, the movements were:



|- | Net interest income increased 10%, with continued growth in customer lending and improved cost of funding from higher deposits that were driven by the enhanced franchise and broader range of services.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income decreased 11%, with lower asset restructuring and rates management fees partially offset by growth in international fees, up 9%, and digital and payment fees, up 26%, the latter two driven by more
loyal customer relationships.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges decreased 1%, demonstrating our strong cost management focus.
|- | ---------------------------------------------------------------------------------------------------------------------------------



|- | Impairment losses on loans and advances increased £4m, with the loan book continuing to perform well, supported by our prudent lending policy.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges increased by £3m and include restructuring costs.
|- | ----------------------------------------------------------------------------------------------

2015 compared to
2014

Profit before tax increased by £123m to £197m in 2015 (2014: £74m). By income statement line, the movements were:



|- | Net interest income increased by £89m to £368m in 2015 (2014: £279m), principally as a result of continued growth in customer loans and an improvement in deposit margins through the enhanced franchise
and broader range of services.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income increased by £14m to £94m in 2015 (2014: £80m) principally due to improved levels of banking fees, international payment income, interest rate management income and lending fees.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges increased by £17m to £217m in 2015 (2014: £200m). The increase reflected the investment in growth of the business serving SME and
corporate customers and our expanded footprint and network of CBCs.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment losses on loans and advances decreased by £51m to £25m in 2015 (2014: £76m) due to an improvement in the credit quality of the loan book and releases driven by loan disposals and
restructurings. This was supported by our cautious lending policy and the supportive economic environment.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges increased by £14m to £23m in 2015 (2014: £9m) predominantly due to the absence of conduct provision releases of £10m made in 2014. Regulatory costs
relating to the UK Bank Levy of £23m (2014: £17m) were charged in the year.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc11



---

##### Table of Contents















Balances



|                         |  |          |      |  |          |  |      |          |  |  |      | 
|------------------------ |  | -------- | ---- |  | -------- |  | ---- | -------- |  |  | ---- | 
|                         |  | 2016
£bn |      |  | 2015
£bn |  |      | 2014
£bn | 
|Total assets             |  |          | 19.4 |  |          |  | 18.7 |          |  |  | 16.2 | 
|Customer loans           |  |          | 19.4 |  |          |  | 18.7 |          |  |  | 16.2 | 
|- of which SMEs          |  |          | 10.7 |  |          |  | 11.4 |          |  |  | 10.2 | 
|- of which mid corporate |  |          | 8.7  |  |          |  | 7.3  |          |  |  | 6.0  | 
|RWAs                     |  |          | 20.4 |  |          |  | 19.0 |          |  |  | 18.2 | 
|Customer deposits        |  |          | 17.2 |  |          |  | 15.1 |          |  |  | 12.0 | 

2016 compared to 2015

|- | Total assets increased by 4% to £19.4bn at 31 December 2016 (2015: £18.7bn)
|- | ---------------------------------------------------------------------------



|- | Customer loans increased 4% to £19.4bn, driven by increased lending to mid corporates partially offset by lower lending to SMEs. Net lending to SMEs was impacted by the competitive environment and economic
uncertainty. Furthermore, we actively managed our exposures to certain segments in line with our proactive risk management practices.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | RWAs increased by 7% with asset growth, and in part due to a model recalibration in one of our Commercial Banking portfolios.
|- | -----------------------------------------------------------------------------------------------------------------------------



|- | We continue to attract deposit balances, with customer deposits growing faster than customer loans through our strong customer relationships, supported by a comprehensive product range and competitive pricing.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

2015 compared to 2014

|- | Total assets increased by 15% to £18.7bn at 31 December 2015 (2014: £16.2bn), due to the increase in customer loans described below.
|- | ------------------------------------------------------------------------------------------------------------------------------------



|- | Customer loans increased by 15% to £18.7bn at 31 December 2015 (2014: £16.2bn) maintaining a positive momentum despite an increasingly competitive and challenging market. This growth was predominantly
driven by our expanded network of regional CBCs and our additional relationship managers.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | RWAs increased by 4% to £19.0bn at 31 December 2015 (2014: £18.2bn) principally in line with customer loan growth.
|- | ------------------------------------------------------------------------------------------------------------------



|- | Customer deposits increased by 26% to £15.1bn at 31 December 2015 (2014: £12.0bn). We continued to attract deposit balances through our strong customer relationships, supported by an expanded product
range and our enhanced banking platform.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Business volumes



|                                                |  |      |        |  |      |  |        |      |  |  |        | 
|----------------------------------------------- |  | ---- | ------ |  | ---- |  | ------ | ---- |  |  | ------ | 
|                                                |  | 2016 |        |  | 2015 |  |        | 2014 | 
|New facilities (£bn)                            |  |      | 7.4    |  |      |  | 8.5    |      |  |  | 7.8    | 
|Bank account openings (No.)                     |  |      | 2,470  |  |      |  | 3,160  |      |  |  | 3,408  | 
|Online banking (Connect) active users (1) (No.) |  |      | 26,970 |  |      |  | 25,120 |      |  |  | 21,810 | 

|(1) | Online banking (Connect) active users include both business banking and Commercial Banking customers.
|--- | -----------------------------------------------------------------------------------------------------

2016 compared
to 2015

|- | We continue to open bank accounts and extend new facilities, although at a slower pace, in an increasingly competitive environment and amid economic uncertainty. Our Relationship Managers (RMs) continue to build their
portfolios by leveraging our comprehensive suite of products and services. We will continue to focus on growing more loyal customer relationships and on better diversification across the sectors, driving primacy through more capital efficient growth
whilst utilising international expertise and economic corridors via Banco Santander.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | There was a continuation in the pickup of our corporate banking platform Connect, with active users increasing 7% year on year.
|- | ---------------------------------------------------------------------------------------------------------------------------------

2015 compared to 2014

|- | New facilities increased 9% to £8.5bn in 2015 (2014: £7.8bn), with increases across most portfolios as a result of our expanded network of RMs, more comprehensive suite of products and services and
leveraging our expertise in international and structured finance.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | We opened 3,160 bank accounts and new facilities in 2015 (2014: 3,408), broadly in line with the previous year. There was a continuation in the pickup of our corporate banking platform Connect, with active users
increasing 15% in the year.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





12Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





Business development



|- | The focus of the Commercial Banking division is to expand its franchise by both growing the overall customer base as well as increasing the number of loyal customers. We aim to build the loyal customer base by
leveraging our international reach and proposition as well continuing to further develop our product capabilities to meet our customers needs. We will also build on the expertise and global presence of Banco Santander, offering international
solutions so that our clients can develop and manage their business through our global network.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Coverage of our commercial clients is organised by local relationship teams or by sectors. Our sector teams support our clients by using specialist knowledge of the individual business and its operating environment to
recommend solutions. Target clients can leverage our international presence and connectivity to access on-the-ground support overseas, connect to potential new business partners and enter global supply chains.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | We are also working with Banco Santander and key strategic partners to develop trade initiatives that make it easier for clients to grow their business internationally. These initiatives allow us to attract new clients
and deepen existing relationships, as well as compliment some of our existing services. For example, Santander Trade Club, an online community that connect Santander clients with clients of our strategic partners, and Santander Passport that help
our clients establish a business subsidiary overseas.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Breakthrough Growth Capital provides new funding and identifies key partnerships at milestones in the development of our clients business and this year assisted 33 businesses in accessing £93m of facilities.
Since inception, the Growth Capital team has completed 126 funding solutions for 94 companies, providing £348m of facilities, which will create over 6,250 jobs.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Our continued efforts and innovative offering were recognised at the 2016 Business Moneyfacts Awards. We won a number of prestigious awards including: Business Bank of the Year for the second consecutive
year and the Innovation in the SME Finance Sector. This industry recognition is a testament to Santander UKs commitment to become the bank of choice for UK companies and shows the strength and value of our overall proposition for
businesses, built on our relationship banking approach.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc13



---

##### Table of Contents















GLOBAL CORPORATE BANKING

Global Corporate Banking services corporate clients with a turnover of £500m and above per annum and financial institutions, as well as supporting the rest of
Santander UKs business segments. Global Corporate Banking clients require specially tailored solutions and value-added services due to their size, complexity and sophistication. We provide these clients with products to manage currency
fluctuations, protect against interest rate risk, and arrange capital markets finance and specialist trade finance solutions.

Summarised
income statement



|                                                                    |  |         |       |  |         |  |       |         |  |  |       | 
|------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                                                    |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m | 
|Net interest income                                                 |  |         | 81    |  |         |  | 72    |         |  |  | 75    | 
|Non-interest income                                                 |  |         | 320   |  |         |  | 307   |         |  |  | 300   | 
|Total operating income                                              |  |         | 401   |  |         |  | 379   |         |  |  | 375   | 
|Operating expenses before impairment losses, provisions and
charges |  |         | (280) |  |         |  | (287) |         |  |  | (260) | 
|Impairment (losses)/releases on loans and advances                  |  |         | (21)  |  |         |  | 13    |         |  |  | 4     | 
|Provisions for other liabilities and charges                        |  |         | (12)  |  |         |  | (14)  |         |  |  | (9)   | 
|Total operating provisions and charges                              |  |         | (33)  |  |         |  | (1)   |         |  |  | (5)   | 
|Profit before tax                                                   |  |         | 88    |  |         |  | 91    |         |  |  | 110   | 

2016 compared to 2015

Profit before tax
decreased by £3m to £88m in 2016 (2015: £91m). By income statement line, the movements were:



|- | Net interest income increased 13% to £81m, with ongoing demand for project and acquisition finance, transactional services and factoring products offsetting continued asset margin compression.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income increased 4% to £320m, underpinned by ongoing demand for derivative and cash sales activities as well as market making activities.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges decreased 2% to £280m, as we continue to improve the efficiency of our operating model.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment losses on loans and advances increased due to the impairment of a single loan that moved to non-performance in the second quarter of 2016 and the absence of releases in the year.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges decreased by £2m to £12m.
|- | ----------------------------------------------------------------------

2015 compared to 2014

Profit before tax decreased by £19m to £91m in 2015 (2014: £110m). By income statement line, the movements were:



|- | Net interest income decreased to £72m in 2015 (2014: £75m), with continued ongoing demand for project and acquisition finance transactions, syndicated loans, transactional services and factoring products
mostly offset by margin compression.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income increased by £7m to £307m in 2015 (2014: £300m) principally due to increased revenues from our client derivative and cash sales activities, partially offset by lower demand in some
market making activities.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges increased by £27m to £287m in 2015 (2014: £260m), mainly reflecting investment in developing transactional, interest rate, foreign
exchange and fixed income capabilities, transfer of a number of sales functions to London from Madrid in 2014, as well as the associated costs from related controls, systems and processes.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment releases on loans and advances benefitted from releases of £13m in 2015 (2014: £4m), reflecting loan disposals and restructurings.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges increased by £5m to £14m in 2015 (2014: £9m) due to an increase in the UK Bank Levy.
|- | ---------------------------------------------------------------------------------------------------------------------------------





14Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





Balances



|                  |  |          |      |  |          |  |      |          |  |  |      | 
|----------------- |  | -------- | ---- |  | -------- |  | ---- | -------- |  |  | ---- | 
|                  |  | 2016
£bn |      |  | 2015
£bn |  |      | 2014
£bn | 
|Total assets      |  |          | 39.8 |  |          |  | 36.6 |          |  |  | 38.3 | 
|Customer loans    |  |          | 5.7  |  |          |  | 5.5  |          |  |  | 5.2  | 
|Other assets      |  |          | 34.1 |  |          |  | 31.1 |          |  |  | 33.1 | 
|RWAs              |  |          | 16.9 |  |          |  | 15.4 |          |  |  | 16.8 | 
|Customer deposits |  |          | 4.1  |  |          |  | 3.0  |          |  |  | 2.3  | 

2016 compared to 2015

|- | Total assets principally consist of derivatives, fixed income products and customer loans. Total assets increased by 9% to £39.8bn at 31 December 2016 (2015: £36.6bn).
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Customer loans increased to £5.7bn, driven by our refinancing and origination activities relating to project and acquisition finance and transactional services, partially offset by lower client drawdowns in the
fourth quarter of 2016.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Other assets principally consist of derivatives and fixed income products. Other assets increased by £3.0bn to £34.1bn at 31 December 2016 (2015: £31.1bn).
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------



|- | RWAs were significantly impacted by market volatility which increased credit and counterparty risk. RWAs attributable to customer loans were £7.5bn (2015: £7.8bn), with asset growth offset by capital
management.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Customer deposits were higher at £4.1bn, as we continue to focus on deeper customer relationships.
|- | --------------------------------------------------------------------------------------------------

2015
compared to 2014

|- | Total assets decreased by 4% to £36.6bn at 31 December 2015 (2014: £38.3bn).
|- | ----------------------------------------------------------------------------



|- | Customer loans increased to £5.5bn at 31 December 2015 (2014: £5.2bn), driven by refinancing and origination activities related to syndicated loans, project and acquisition finance and transactional
services. We continued to develop our larger corporate and institutional client franchise and our product offering in banking and capital markets. We focused the business mix towards core banking activities, such as global transaction banking, Debt
Capital Markets solutions, supply chain finance and cash management, and added private placement capabilities in order to offer products our customers require.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Other assets decreased by £2.0bn to £31.1bn at 31 December 2015 (2014: £33.1bn) due to a decrease in holdings of debt securities and the reduction in fair value of interest rate and cross currency
derivative assets principally driven by movements in yield curves and foreign exchange rates. This was partially offset by higher levels of securities purchased under resale agreements.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | RWAs decreased slightly to £15.4bn at 31 December 2015 (2014: £16.8bn) reflecting decreases in market and counterparty credit risk.
|- | -----------------------------------------------------------------------------------------------------------------------------------



|- | Customer deposits increased to £3.0bn at 31 December 2015 (2014: £2.3bn) as we continued to attract deposit balances where we have strong customer relationships.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------

Business development in 2016



|- | In 2016, we further refined our business model to deepen relationships with clients and increase loyalty. Specific initiatives were undertaken to improve the overall customer experience, including the rollout of the
Client Management Service function, which streamlines the on-boarding process.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Strong 2016 results, with greater Commercial Banking collaboration and more cross-border business. We also increased commercial activity with financial institution clients and benefitted from strong demand in the
Emerging Markets business.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | We continue to focus on opportunities to drive fee income and maximise our return on capital by effectively leveraging our transactional products, FX and advisory services.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Effective cost management remains a key priority, while we continue to strengthen our governance oversight to ensure that the business is well positioned to support its current and future growth plans. In 2016, we made
significant progress towards meeting all our regulatory and compliance obligations.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc15



---

##### Table of Contents















CORPORATE CENTRE

Corporate Centre predominantly consists of the non-core corporate and treasury legacy portfolios. Corporate Centre is also responsible for managing capital and funding,
balance sheet composition and structure and strategic liquidity risk. The non-core corporate and treasury legacy portfolios include aviation, shipping, infrastructure, commercial mortgages, Social Housing loans and structured credit assets, all of
which are being run-down and/or managed for value.

Summarised income statement



|                                                                    |  |         |       |  |         |  |     |         |  |  |      | 
|------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | --- | ------- |  |  | ---- | 
|                                                                    |  | 2016
£m |       |  | 2015
£m |  |     | 2014
£m | 
|Net interest (expense)/income                                       |  |         | (57)  |  |         |  | 58  |         |  |  | 39   | 
|Non-interest income                                                 |  |         | 229   |  |         |  | 61  |         |  |  | 87   | 
|Total operating income                                              |  |         | 172   |  |         |  | 119 |         |  |  | 126  | 
|Operating expenses before impairment losses, provisions and
charges |  |         | (119) |  |         |  | 2   |         |  |  | (87) | 
|Impairment releases on loans and advances                           |  |         | 3     |  |         |  | 36  |         |  |  | 17   | 
|Provisions for other liabilities and (charges)/releases             |  |         | (21)  |  |         |  | 3   |         |  |  | -    | 
|Total operating impairment losses, provisions and
charges           |  |         | (18)  |  |         |  | 39  |         |  |  | 17   | 
|Profit before tax                                                   |  |         | 35    |  |         |  | 160 |         |  |  | 56   | 

2016 compared to 2015

Profit before tax
decreased by £125m to £35m in 2016 (2015: £160m). By income statement line, the movements were:



|- | Net interest expense of £57m down from £58m income in 2015, reflects changes in the commercial balance sheet profile and in part an increase in wholesale funding cost. This cost increased with the
commencement of senior unsecured issuance from the holding company to meet our MREL recapitalisation requirements.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Due to the lower
interest rate environment, we envisage that net interest income from the structural hedge will decrease as a result of maturing positions being reinvested at lower prevailing rates. The majority of new mortgage flows are left un-hedged to provide
stable returns on equity and current accounts. The average term of our new mortgage flows is about 2.5 years, with a total structural hedge position of c. £80bn.



|- | Non-interest income benefited from a £119m gain on the sale of our Visa Europe Limited shareholding in Q216, and mark-to-market movements on economic hedges.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges mainly represent £122m of regulatory compliance and project costs relating to Banking Reform, including intangible asset write-downs.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment releases on loans and advances decreased to £3m, with lower releases from asset disposals than in 2015.
|- | ------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities include employee restructuring costs and related provisions.
|- | ---------------------------------------------------------------------------------------------

2015 compared to 2014

Profit before tax increased by £104m to £160m in 2015 (2014: £56m). By income statement line, the movements were:



|- | Net interest income increased by £19m to £58m in 2015 (2014: £39m), reflecting the differing maturity and behavioural profiles between the commercial balance sheet and the improved funding cost.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Non-interest income decreased by £26m to £61m in 2015 (2014: £87m), reflecting reduced mark-to-market movements in debt issuance and other portfolios are effectively hedged in line with Santander
UKs risk management policies.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Operating expenses before impairment losses, provisions and charges decreased by £89m to £2m income in 2015 (2014: £87m). In 2014, the benefit was principally due to a net gain of £218m which
arose as a result of scheme changes that limit future defined benefit pension entitlements and provide for the longer term sustainability of our staff pension arrangement. This was more than offset by additional project costs of £98m,
including those relating to our investment programme, which were borne centrally, and software write-offs of £206m for the decommissioning of redundant systems following the implementation of our new digital platform and the completion of our
product simplification programme.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Impairment releases on loans and advances increased by £19m to £36m in 2015 (2014: £17m) mainly due to provision releases in the non-core portfolio as a result of asset disposals and repayments.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Provisions for other liabilities and charges decreased by £3m to releases of £3m (2014: £nil), as a result of loan disposals during the year.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------





16Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





Balances



|                          |  |          |      |  |          |  |      |          |  |  |      | 
|------------------------- |  | -------- | ---- |  | -------- |  | ---- | -------- |  |  | ---- | 
|                          |  | 2016
£bn |      |  | 2015
£bn |  |      | 2014
£bn | 
|Total assets              |  |          | 68.2 |  |          |  | 52.0 |          |  |  | 55.6 | 
|Customer loans (non-core) |  |          | 6.5  |  |          |  | 7.4  |          |  |  | 8.3  | 
|- of which Social Housing |  |          | 5.4  |  |          |  | 6.2  |          |  |  | 6.7  | 
|RWAs                      |  |          | 6.7  |  |          |  | 7.1  |          |  |  | 7.2  | 
|Customer deposits         |  |          | 3.0  |  |          |  | 3.9  |          |  |  | 5.2  | 

2016 compared to 2015

|- | Total assets increased by 31% to £68.2bn at 31 December 2016 (2015: £52.0bn).
|- | -----------------------------------------------------------------------------



|- | Customer loans decreased for the year, as we continue to implement our ongoing exit strategy from individual loans and leases to run-down the non-core corporate and legacy portfolios.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | RWAs decreased with the reduction in non-core customer loans and the sale of our Visa Europe Limited shareholding, partially offset by the impact of higher market volatility on counterparty credit risk. RWAs
attributable to non-core customer loans amounted to £1.3bn (2015: £1.5bn).
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Customer deposits decreased £0.9bn, as we continued to rebalance the deposit base tenor.
|- | ----------------------------------------------------------------------------------------

2015 compared to 2014

|- | Total assets principally consists of liquid assets and non-core customer loans. Total assets decreased by 6% to £52.0bn at 31 December 2015 (2014: £55.6bn).
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Customer loans decreased by 11% to £7.4bn at 31 December 2015 (2014: £8.3bn) due to the run-down of the non-core corporate and legacy portfolios as we continued to successfully implement our ongoing
exit strategy from individual loans and leases. Disposals of assets continued across the portfolios with no significant impact on the income statement. The Social Housing loan portfolio remained relatively stable, reflecting its long-term, low risk
nature.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | RWAs decreased by 1.4% to £7.1bn at 31 December 2015 (2014: £7.2bn) with the reduction in non-core customer loan exposures and the continued run-down of the other non-core corporate and legacy
portfolios offset by an increased operational risk charge.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Customer deposits decreased by 25% to £3.9bn at 31 December 2015 (2014: £5.2bn), as we focused on rebalancing the deposit base tenor.
|- | -------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc17



---

##### Table of Contents



Annual Report 2016

Financial review









Balance sheet review

This Financial review
describes our significant assets and liabilities and our strategy and reasons for entering into such transactions. In this section, references to UK and non-UK, in the geographical analysis, refer to the location of the office where the transaction
is recorded.

SUMMARISED CONSOLIDATED BALANCE SHEET



|                                               |  |         |         |  |         |  |         | 
|---------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | 
|                                               |  | 2016
£m |         |  | 2015
£m | 
|Assets                                         |  |         |         |  |         |  |         | 
|Cash and balances at central banks             |  |         | 17,107  |  |         |  | 16,842  | 
|Trading assets                                 |  |         | 30,035  |  |         |  | 23,961  | 
|Derivative financial instruments               |  |         | 25,471  |  |         |  | 20,911  | 
|Financial assets designated at fair value      |  |         | 2,140   |  |         |  | 2,398   | 
|Loans and advances to banks                    |  |         | 4,348   |  |         |  | 3,548   | 
|Loans and advances to customers                |  |         | 199,738 |  |         |  | 198,045 | 
|Loans and receivables securities               |  |         | 257     |  |         |  | 52      | 
|Available-for-sale securities                  |  |         | 10,561  |  |         |  | 9,012   | 
|Held-to-maturity investments                   |  |         | 6,648   |  |         |  | -       | 
|Macro hedge of interest rate risk              |  |         | 1,098   |  |         |  | 781     | 
|Interest in other entities                     |  |         | 61      |  |         |  | 48      | 
|Property, plant and equipment                  |  |         | 1,491   |  |         |  | 1,597   | 
|Retirement benefit assets                      |  |         | 398     |  |         |  | 556     | 
|Tax, intangibles and other assets              |  |         | 3,789   |  |         |  | 3,655   | 
|Total assets                                   |  |         | 303,142 |  |         |  | 281,406 | 
|Liabilities                                    |  |         |         |  |         |  |         | 
|Deposits by banks                              |  |         | 9,769   |  |         |  | 8,278   | 
|Deposits by customers                          |  |         | 177,172 |  |         |  | 164,074 | 
|Trading liabilities                            |  |         | 15,560  |  |         |  | 12,722  | 
|Derivative financial instruments               |  |         | 23,103  |  |         |  | 21,508  | 
|Financial liabilities designated at fair value |  |         | 2,440   |  |         |  | 2,016   | 
|Debt securities in issue                       |  |         | 50,346  |  |         |  | 49,615  | 
|Subordinated liabilities                       |  |         | 4,303   |  |         |  | 3,885   | 
|Macro hedge of interest rate risk              |  |         | 350     |  |         |  | 110     | 
|Retirement benefit obligations                 |  |         | 262     |  |         |  | 110     | 
|Tax, other liabilities and provisions          |  |         | 3,753   |  |         |  | 3,429   | 
|Total liabilities                              |  |         | 287,058 |  |         |  | 265,747 | 
|Equity                                         |  |         |         |  |         |  |         | 
|Total shareholders equity                     |  |         | 15,934  |  |         |  | 15,524  | 
|Non-controlling interests                      |  |         | 150     |  |         |  | 135     | 
|Total equity                                   |  |         | 16,084  |  |         |  | 15,659  | 
|Total liabilities and equity                   |  |         | 303,142 |  |         |  | 281,406 | 

A more detailed consolidated balance sheet is contained in the Consolidated Financial Statements.

2016 compared to 2015

Assets

Trading assets

Trading assets increased by 25% to £30,035m at
31 December 2016 (2015: £23,961m), reflecting changes in the mix of assets held for liquidity purposes, with higher levels of securities purchased under resale agreements and debt, partially offset by decreased holdings of equity
securities.

Derivative financial instruments - assets

Derivative assets
increased by 22% to £25,471 m at 31 December 2016 (2015: £20,911m). The increase was mainly due to volatility in the fair value of interest rate and cross currency derivative assets principally driven by movements in yield curves
and foreign exchange rates.

Financial assets designated at fair value through profit or loss

Financial assets designated at fair value through profit or loss decreased by 11% to £2,140m at 31 December 2016 (2015: £2,398m), mainly driven by
maturities and redemptions within the portfolio, partially offset by an increase in the valuation of assets. In accordance with our policy, new loans are no longer being designated at fair value.

Loans and advances to banks

Loans and advances to banks increased 23% to
£4,348m at 31 December 2016 (2015: £3,548m). The increase was driven by a higher volume in securities purchased under resale agreements and placements with other banks.

Loans and advances to customers

Loans and advances to customers increased by
1% to £199,738m at 31 December 2016 (2015: £198,045m), principally due to net increases of £1.5bn in residential mortgage balances and £0.9bn in loans to UK companies, partially offset by a managed decrease of
£0.9bn in the non-core portfolio.





18Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





Available-for-sale securities

Available-for-sale securities increased by 17% to £10,561m at 31 December 2016 (2015: £9,012m) mainly due to an increase in debt securities as part of
normal liquidity asset portfolio management activity.

Held-to-maturity investments

Held-to-maturity investments increased to £6,648m at 31 December 2016 (2015: £nil). During the year, the Santander UK group purchased a portfolio of UK
Government debt securities for liquidity purposes. These were classified as held-to-maturity investments on acquisition.

Macro hedge of interest rate risk -
assets

The macro hedge of interest rate risk increased by 41% to £1,098m at 31 December 2016 (2015: £781m) mainly driven by the lower interest
rate environment.

Retirement benefit assets

Retirement benefit assets
decreased by 28% to £398m at 31 December 2016 (2015: £556m). For those sections of the Santander (UK) Group Pension Scheme which had surpluses, the decrease was due to a combination of a change in methodology to derive the discount
rate for scheme liabilities and general price inflation which occurred during the year, and the fall in underlying corporate bond yields which drive the discount rate. This was partially offset by strong asset performance. For more, see Note 34 to
the Consolidation Financial Statements.

Tax, intangibles and other assets

Tax, intangibles and other assets increased by 4% to £3,789m at 31 December 2016 (2015: £3,655m). The increase was primarily driven by an increase in
prepayments and capitalisation of computer software.

Liabilities

Deposits by banks

Deposits by banks increased by 18% to £9,769m at
31 December 2016 (2015: £8,278m) driven by deposits with the Bank of England as part of the new Term Funding scheme implemented in 2016, partially offset by a decrease in securities sold under resale agreements.

Deposits by customers

Deposits by customers increased by 8% to £177,172m
at 31 December 2016 (2015: £164,074m) as we focused on retaining and originating accounts held by more loyal customers, with a continued net positive inflows to 1I2I3 Current Account.

Trading liabilities

Trading liabilities increased by 22% to £15,560m at
31 December 2016 (2015: £12,722m) as a result of an increase in collateral held and securities purchased under repurchase agreements, as part of normal trading activity.

Derivative financial instruments - liabilities

Derivative liabilities
increased by 7% to £23,103m at 31 December 2016 (2015: £21,508m). The increase was mainly due to volatility in the fair value of interest rate and cross currency derivative liabilities mainly driven by movements in yield curves and
foreign exchange rates.

Debt securities in issue

Debt securities in issue
increased by 1% to £50,346m at 31 December 2016 (2015: £49,615m), driven by issuance of senior unsecured debt partially offset by redemption of notes within our securitisation programmes.

Macro hedge of interest rate risk - liabilities

Macro hedge of interest rate
risk increased to £350m at 31 December 2016 (2015: £110m) mainly driven by the lower interest rate environment.

Retirement benefit obligations

Retirement benefit obligations increased by 138% to £262m at 31 December 2016 (2015: £110m). For those sections of the Santander (UK) Group
Pension Scheme which had deficits, the increase was a combination of a change in methodology to derive the discount rate for scheme liabilities and general price inflation which occurred during the year, the fall in underlying corporate bond yields
which drive the discount rate which was partially offset by strong asset performance. For more, see Note 34 to the Consolidation Financial Statements.

Tax, other
liabilities and provisions

Tax, other liabilities and provisions increased by 9% to £3,753m at 31 December 2016 (2015: £3,429m). The increase
mainly reflected the increase in dividends payable, increase in current tax liabilities attributable to the banking corporation tax surcharge and unsettled financial transactions.

Equity

Total shareholders equity

Total shareholders equity increased by 3% to £15,934m at 31 December 2016 (2015: £15,524m). The increase was principally attributable to the profit
for the year and the valuation of cash flow hedges, partially offset by actuarial losses on the defined benefit pension funds and dividends approved.

Non-controlling interests

Non-controlling interests increased by 11% to
£150m 31 December 2016 (2015: £135m) due to profits from PSA Finance UK Limited, partially offset by dividends paid by PSA Finance UK Limited.





Santander UK plc19



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##### Table of Contents



Annual Report 2016

Financial review









RECONCILIATION TO CLASSIFICATIONS IN THE CONSOLIDATED BALANCE SHEET

In the rest of the Balance sheet review, our assets and liabilities are summarised by their nature, rather than by how they are classified in the Consolidated Balance
Sheet. These two presentations can be reconciled as follows:



|                                               |  |      |  |                          |        |  |                             |  |        |                                |  |  |                          |  |  |                      |        |  |                              |  |        |       |  |  |                     |  |  |  |        |  |  |  |         | 
|---------------------------------------------- |  | ---- |  | ------------------------ | ------ |  | --------------------------- |  | ------ | ------------------------------ |  |  | ------------------------ |  |  | -------------------- | ------ |  | ---------------------------- |  | ------ | ----- |  |  | ------------------- |  |  |  | ------ |  |  |  | ------- | 
|2016                                           |  |      |  | Financial review section |        |  |                             |  |        |                                | 
|Balance sheet line item                        |  | Note |  | Securities               |        |  | Loans andadvances tobanks   |  |        | Loans and
advances tocustomers |  |  | Derivatives              |  |  | Tangiblefixed
assets |        |  | Retirementbenefitassets      |  |        | Other |  |  | Balance
sheet total | 
|                                               |  |      |  | £m                       |        |  | £m                          |  |        | £m                             |  |  | £m                       |  |  | £m                   |        |  | £m                           |  |        | £m    |  |  | £m                  | 
|Assets                                         |  |      |  |                          |        |  |                             |  |        |                                |  |  |                          |  |  |                      |        |  |                              |  |        |       |  |  |                     |  |  |  |        |  |  |  |         | 
|Cash and balances at central banks             |  |      |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 17,107 |  |  |  | 17,107  | 
|Trading assets                                 |  | 11   |  |                          | 12,234 |  |                             |  | 7,478  |                                |  |  | 10,323                   |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 30,035  | 
|Derivative financial instruments               |  | 12   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | 25,471 |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 25,471  | 
|Financial assets designated at fair value      |  | 13   |  |                          | 409    |  |                             |  | -      |                                |  |  | 1,731                    |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 2,140   | 
|Loans and advances to banks                    |  | 14   |  |                          | -      |  |                             |  | 4,348  |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 4,348   | 
|Loans and advances to customers                |  | 15   |  |                          | -      |  |                             |  | -      |                                |  |  | 199,738                  |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 199,738 | 
|Loans and receivables securities               |  | 18   |  |                          | -      |  |                             |  | 2      |                                |  |  | 255                      |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 257     | 
|Available-for-sale securities                  |  | 19   |  |                          | 10,561 |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 10,561  | 
|Held-to-maturity investments                   |  | 20   |  |                          | 6,648  |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 6,648   | 
|Macro hedge of interest rate risk              |  |      |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 1,098  |  |  |  | 1,098   | 
|Interests in other entities                    |  | 21   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 61     |  |  |  | 61      | 
|Property, plant and equipment                  |  | 23   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | 1,491  |       |  |  | -                   |  |  |  | -      |  |  |  | 1,491   | 
|Retirement benefit assets                      |  | 34   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | 398                 |  |  |  | -      |  |  |  | 398     | 
|Tax, intangibles and other assets              |  |      |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 3,789  |  |  |  | 3,789   | 
|                                               |  |      |  |                          | 29,852 |  |                             |  | 11,828 |                                |  |  | 212,047                  |  |  |                      | 25,471 |  |                              |  | 1,491  |       |  |  | 398                 |  |  |  | 22,055 |  |  |  | 303,142 | 
|                                               |  |      |  |                          |        |  | Deposits by
banks           |  |        | Deposits by
customers          |  |  | Debt securities
in issue |  |  | Derivatives          |        |  | Retirementbenefitobligations |  |        | Other |  |  | Balance
sheet total | 
|                                               |  |      |  |                          |        |  | £m                          |  |        | £m                             |  |  | £m                       |  |  | £m                   |        |  | £m                           |  |        | £m    |  |  | £m                  | 
|Liabilities                                    |  |      |  |                          |        |  |                             |  |        |                                |  |  |                          |  |  |                      |        |  |                              |  |        |       |  |  |                     |  |  |  |        |  |  |  |         | 
|Deposits by banks                              |  | 26   |  |                          |        |  |                             |  | 9,769  |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 9,769   | 
|Deposits by customers                          |  | 27   |  |                          |        |  |                             |  | -      |                                |  |  | 177,172                  |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 177,172 | 
|Trading liabilities                            |  | 28   |  |                          |        |  |                             |  | 4,200  |                                |  |  | 8,559                    |  |  |                      | 2,801  |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 15,560  | 
|Derivative financial instruments               |  | 12   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | 23,103 |       |  |  | -                   |  |  |  | -      |  |  |  | 23,103  | 
|Financial liabilities designated at fair value |  | 29   |  |                          |        |  |                             |  | -      |                                |  |  | 526                      |  |  |                      | 1,914  |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 2,440   | 
|Debt securities in issue                       |  | 30   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | 50,346 |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 50,346  | 
|Subordinated liabilities                       |  | 31   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | 4,303  |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 4,303   | 
|Macro hedge of interest rate risk              |  |      |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 350    |  |  |  | 350     | 
|Retirement benefit obligations                 |  | 34   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | 262                 |  |  |  | -      |  |  |  | 262     | 
|Tax, other liabilities and provisions          |  |      |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 3,753  |  |  |  | 3,753   | 
|                                               |  |      |  |                          |        |  |                             |  | 13,969 |                                |  |  | 186,257                  |  |  |                      | 59,364 |  |                              |  | 23,103 |       |  |  | 262                 |  |  |  | 4,103  |  |  |  | 287,058 | 
|                                               |  |      |  |                         
|2015                                           |  |      |  | Financial review section |        |  |                             |  |        |                                | 
|Balance sheet line item                        |  | Note |  | Securities               |        |  | Loans and
advances to banks |  |        | Loans andadvances to
customers |  |  | Derivatives              |  |  | Tangiblefixed
assets |        |  | Retirementbenefit
assets     |  |        | Other |  |  | Balance
sheet total | 
|                                               |  |      |  | £m                       |        |  | £m                          |  |        | £m                             |  |  | £m                       |  |  | £m                   |        |  | £m                           |  |        | £m    |  |  | £m                  | 
|Assets                                         |  |      |  |                          |        |  |                             |  |        |                                |  |  |                          |  |  |                      |        |  |                              |  |        |       |  |  |                     |  |  |  |        |  |  |  |         | 
|Cash and balances at central banks             |  |      |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 16,842 |  |  |  | 16,842  | 
|Trading assets                                 |  | 11   |  |                          | 12,568 |  |                             |  | 5,433  |                                |  |  | 5,960                    |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 23,961  | 
|Derivative financial instruments               |  | 12   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | 20,911 |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 20,911  | 
|Financial assets designated at fair value      |  | 13   |  |                          | 507    |  |                             |  | -      |                                |  |  | 1,891                    |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 2,398   | 
|Loans and advances to banks                    |  | 14   |  |                          | -      |  |                             |  | 3,548  |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 3,548   | 
|Loans and advances to customers                |  | 15   |  |                          | -      |  |                             |  | -      |                                |  |  | 198,045                  |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 198,045 | 
|Loans and receivables securities               |  | 18   |  |                          | -      |  |                             |  | 1      |                                |  |  | 51                       |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 52      | 
|Available-for-sale securities                  |  | 19   |  |                          | 9,012  |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 9,012   | 
|Macro hedge of interest rate risk              |  |      |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 781    |  |  |  | 781     | 
|Interests in other entities                    |  | 21   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 48     |  |  |  | 48      | 
|Property, plant and equipment                  |  | 23   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | 1,597  |       |  |  | -                   |  |  |  | -      |  |  |  | 1,597   | 
|Retirement benefit assets                      |  | 34   |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | 556                 |  |  |  | -      |  |  |  | 556     | 
|Tax, intangibles and other assets              |  |      |  |                          | -      |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 3,655  |  |  |  | 3,655   | 
|                                               |  |      |  |                          | 22,087 |  |                             |  | 8,982  |                                |  |  | 205,947                  |  |  |                      | 20,911 |  |                              |  | 1,597  |       |  |  | 556                 |  |  |  | 21,326 |  |  |  | 281,406 | 
|                                               |  |      |  |                          |        |  | Deposits by
banks           |  |        | Deposits bycustomers           |  |  | Debt securities
in issue |  |  | Derivatives          |        |  | Retirementbenefitobligations |  |        | Other |  |  | Balance
sheet total | 
|                                               |  |      |  |                          |        |  | £m                          |  |        | £m                             |  |  | £m                       |  |  | £m                   |        |  | £m                           |  |        | £m    |  |  | £m                  | 
|Liabilities                                    |  |      |  |                          |        |  |                             |  |        |                                |  |  |                          |  |  |                      |        |  |                              |  |        |       |  |  |                     |  |  |  |        |  |  |  |         | 
|Deposits by banks                              |  | 26   |  |                          |        |  |                             |  | 8,278  |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 8,278   | 
|Deposits by customers                          |  | 27   |  |                          |        |  |                             |  | -      |                                |  |  | 164,074                  |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 164,074 | 
|Trading liabilities                            |  | 28   |  |                          |        |  |                             |  | 2,777  |                                |  |  | 7,151                    |  |  |                      | 2,794  |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 12,722  | 
|Derivative financial instruments               |  | 12   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | 21,508 |       |  |  | -                   |  |  |  | -      |  |  |  | 21,508  | 
|Financial liabilities designated at fair value |  | 29   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | 2,016  |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 2,016   | 
|Debt securities in issue                       |  | 30   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | 49,615 |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 49,615  | 
|Subordinated liabilities                       |  | 31   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | 3,885  |  |                              |  | -      |       |  |  | -                   |  |  |  | -      |  |  |  | 3,885   | 
|Macro hedge of interest rate risk              |  |      |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 110    |  |  |  | 110     | 
|Retirement benefit obligations                 |  | 34   |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | 110                 |  |  |  | -      |  |  |  | 110     | 
|Tax, other liabilities and provisions          |  |      |  |                          |        |  |                             |  | -      |                                |  |  | -                        |  |  |                      | -      |  |                              |  | -      |       |  |  | -                   |  |  |  | 3,429  |  |  |  | 3,429   | 
|                                               |  |      |  |                          |        |  |                             |  | 11,055 |                                |  |  | 171,225                  |  |  |                      | 58,310 |  |                              |  | 21,508 |       |  |  | 110                 |  |  |  | 3,539  |  |  |  | 265,747 | 





20Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





SECURITIES

Securities are only a small proportion of our total assets. We hold securities mainly in our trading portfolio or classified as available-for-sale.

Analysis by type of issuer

The following table sets out our securities at
31 December 2016, 2015 and 2014. For more information, see the Notes to the Consolidated Financial Statements.



|                                                                 |  |         |        |  |         |  |        |         |  |  |        | 
|---------------------------------------------------------------- |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------ | 
|                                                                 |  | 2016
£m |        |  | 2015
£m |  |        | 2014
£m | 
|Trading assets                                                   |  |         |        |  |         |  |        |         |  |  |        | 
|Debt securities:                                                 |  |         |        |  |         |  |        |         |  |  |        | 
|UK Government                                                    |  |         | 1,143  |  |         |  | 548    |         |  |  | 905    | 
|US Treasury and other US Government agencies and corporations    |  |         | 180    |  |         |  | 119    |         |  |  | 309    | 
|Other OECD governments                                           |  |         | 4,027  |  |         |  | 3,827  |         |  |  | 5,788  | 
|Other issuers:                                                   |  |         |        |  |         |  |        |         |  |  |        | 
|- Fixed and floating rate notes  Government guaranteed          |  |         | 898    |  |         |  | 968    |         |  |  | 979    | 
|Ordinary shares and similar securities                           |  |         | 5,986  |  |         |  | 7,106  |         |  |  | 4,776  | 
|                                                                 |  |         | 12,234 |  |         |  | 12,568 |         |  |  | 12,757 | 
|Financial assets designated at fair value through profit or loss |  |         |        |  |         |  |        |         |  |  |        | 
|Debt securities:                                                 |  |         |        |  |         |  |        |         |  |  |        | 
|Other issuers:                                                   |  |         |        |  |         |  |        |         |  |  |        | 
|- Mortgage-backed securities                                     |  |         | 133    |  |         |  | 209    |         |  |  | 226    | 
|- Other asset-backed securities                                  |  |         | 36     |  |         |  | 62     |         |  |  | 134    | 
|- Other securities                                               |  |         | 240    |  |         |  | 236    |         |  |  | 262    | 
|                                                                 |  |         | 409    |  |         |  | 507    |         |  |  | 622    | 
|Available-for-sale securities                                    |  |         |        |  |         |  |        |         |  |  |        | 
|Debt securities:                                                 |  |         |        |  |         |  |        |         |  |  |        | 
|UK Government                                                    |  |         | 2,223  |  |         |  | 2,964  |         |  |  | 4,163  | 
|US Treasury and other US Government agencies and corporations    |  |         | 1,088  |  |         |  | 192    |         |  |  | -      | 
|Other OECD governments                                           |  |         | 477    |  |         |  | 224    |         |  |  | -      | 
|Bank and Building Society:                                       |  |         |        |  |         |  |        |         |  |  |        | 
|- Bonds                                                          |  |         | 5,051  |  |         |  | 4,271  |         |  |  | 4,177  | 
|Other issuers                                                    |  |         | 1,610  |  |         |  | 1,232  |         |  |  | 579    | 
|Ordinary shares and similar securities                           |  |         | 112    |  |         |  | 129    |         |  |  | 25     | 
|                                                                 |  |         | 10,561 |  |         |  | 9,012  |         |  |  | 8,944  | 
|Held-to-maturity investments                                     |  |         |        |  |         |  |        |         |  |  |        | 
|Debt securities:                                                 |  |         |        |  |         |  |        |         |  |  |        | 
|UK Government                                                    |  |         | 6,648  |  |         |  | -      |         |  |  | -      | 
|                                                                 |  |         | 6,648  |  |         |  | -      |         |  |  | -      | 
|                                                                 |  |         | 29,852 |  |         |  | 22,087 |         |  |  | 22,323 | 

Debt securities

UK Government

UK Government securities are Treasury Bills and UK Government guaranteed issues by other UK banks. We hold these securities for trading and liquidity purposes. For more
information, see Country risk exposures in the Risk review.

US Treasury and other US Government agencies and corporations

US Treasury and other US Government agencies and corporations securities are US Treasury Bills, including cash management bills. We hold these securities for
trading and liquidity purposes. For more information, see Country risk exposures in the Risk review.

Other OECD governments

Other OECD government securities are issues by OECD governments, other than the US and UK Governments, principally Japan and Italy (2015: principally Japan and Italy). We
hold these securities for trading and liquidity management purposes. For more information, see Country risk exposures in the Risk review.

Bank and
Building Society

Bonds are fixed securities with short to medium-term maturities issued by banks and building societies. We hold these securities for liquidity
purposes.

Other issuers

Fixed and floating rate notes

Fixed and floating rate notes have regular interest rate profiles and are either managed within the overall position for the relevant book or are hedged into one of the
main currencies. We hold these securities for trading and yield purposes. For more information on Government guaranteed fixed and floating rate notes, see Country risk exposures in the Risk review.





Santander UK plc21



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##### Table of Contents



Annual Report 2016

Financial review









Mortgage-backed securities

This category mainly comprises UK residential
mortgage-backed securities. These securities are of good quality and contain no sub-prime element. See Note 13 to the Consolidated Financial Statements.

Other
asset-backed securities

This category mainly comprises floating-rate asset-backed securities. See Note 13 to the Consolidated Financial Statements.

Other securities

This category mainly comprises reversionary UK property
securities. See Note 13 to the Consolidated Financial Statements.

Ordinary shares and similar securities

This category mainly comprises equity securities listed in the UK and other countries held for trading purposes. See Note 11 to the Consolidated Financial Statements.

Contractual maturities

For contractual maturities for held-to-maturity
investments, see Note 18 to the Consolidated Financial Statements.

Significant exposures

The following table shows the book value (which equals market value) of securities of individual counterparties where the total amount of those securities exceeded 10%
of our shareholders funds at 31 December 2016 as set out in the Consolidated Balance Sheet. The table also shows where we classify the securities in the Consolidated Balance Sheet.



|                                           |  |                  |       |  |                      |  |       |                    |  |  |          |  |  |  |        | 
|------------------------------------------ |  | ---------------- | ----- |  | -------------------- |  | ----- | ------------------ |  |  | -------- |  |  |  | ------ | 
|                                           |  | Trading assets£m |       |  | Available-for-sale£m |  |       | Held-to-maturity£m |  |  | Total
£m | 
|UK Government and UK Government guaranteed |  |                  | 1,559 |  |                      |  | 2,223 |                    |  |  | 6,648    |  |  |  | 10,430 | 
|Japanese Government                        |  |                  | 2,812 |  |                      |  | -     |                    |  |  | -        |  |  |  | 2,812  | 

LOANS AND ADVANCES TO BANKS

Loans and advances to banks include loans to banks and building societies and balances with central banks (excluding central bank balances which can be withdrawn on
demand).

Geographical analysis

The geographical analysis of balances
below is based on the location of the office of lending, rather than the domicile of the borrower. For geographical analysis based on the domicile of the borrower, see Country risk exposures in the Risk review, including details of
balances with other Banco Santander companies.

The balances include loans and advances to banks classified in the balance sheet as trading assets, financial assets
designated at fair value, or loans and receivables securities.



|       |  |         |        |  |         |  |       |         |  |  |         |  |  |         |        |  |  |  |        | 
|------ |  | ------- | ------ |  | ------- |  | ----- | ------- |  |  | ------- |  |  | ------- | ------ |  |  |  | ------ | 
|       |  | 2016
£m |        |  | 2015
£m |  |       | 2014
£m |  |  | 2013
£m |  |  | 2012
£m |       
|UK     |  |         | 9,138  |  |         |  | 4,982 |         |  |  | 5,181   |  |  |         | 8,966  |  |  |  | 11,763 | 
|Non-UK |  |         | 2,690  |  |         |  | 4,000 |         |  |  | 2,821   |  |  |         | 2,953  |  |  |  | 1,153  | 
|       |  |         | 11,828 |  |         |  | 8,982 |         |  |  | 8,002   |  |  |         | 11,919 |  |  |  | 12,916 | 

Maturity analysis

The following table shows
loans and advances to banks by maturity at 31 December 2016.



|                         |  |              |       |  |                                 |  |       |                                                       |  |  |                                                     |  |  |                                                     |       |  |                           |  |   |          |  |  |     |  |  |  |        | 
|------------------------ |  | ------------ | ----- |  | ------------------------------- |  | ----- | ----------------------------------------------------- |  |  | --------------------------------------------------- |  |  | --------------------------------------------------- | ----- |  | ------------------------- |  | - | -------- |  |  | --- |  |  |  | ------ | 
|                         |  | On
demand £m |       |  | In not more thanthree months
£m |  |       | In more than
threemonths but not morethan one year £m |  |  | In more than oneyear but not morethan five
years £m |  |  | In more than fiveyears but notmore
than tenyears £m |       |  | In more
than ten years
£m |  |   | Total
£m | 
|UK                       |  |              | 4,002 |  |                                 |  | 2,909 |                                                       |  |  | 385                                                 |  |  |                                                     | 1,532 |  |                           |  | - |          |  |  | 310 |  |  |  | 9,138  | 
|Non-UK                   |  |              | 2,690 |  |                                 |  | -     |                                                       |  |  | -                                                   |  |  |                                                     | -     |  |                           |  | - |          |  |  | -   |  |  |  | 2,690  | 
|                         |  |              | 6,692 |  |                                 |  | 2,909 |                                                       |  |  | 385                                                 |  |  |                                                     | 1,532 |  |                           |  | - |          |  |  | 310 |  |  |  | 11,828 | 
|Of which:                |  |              |       |  |                                 |  |       |                                                       |  |  |                                                     |  |  |                                                     |       |  |                           |  |   |          |  |  |     |  |  |  |        | 
| Fixed interest rate    |  |              | 3,573 |  |                                 |  | 2,656 |                                                       |  |  | -                                                   |  |  |                                                     | -     |  |                           |  | - |          |  |  | 2   |  |  |  | 6,231  | 
| Variable interest rate |  |              | 2,300 |  |                                 |  | 244   |                                                       |  |  | 385                                                 |  |  |                                                     | 1,532 |  |                           |  | - |          |  |  | 308 |  |  |  | 4,769  | 
| Non-interest-bearing   |  |              | 819   |  |                                 |  | 9     |                                                       |  |  | -                                                   |  |  |                                                     | -     |  |                           |  | - |          |  |  | -   |  |  |  | 828    | 
|                         |  |              | 6,692 |  |                                 |  | 2,909 |                                                       |  |  | 385                                                 |  |  |                                                     | 1,532 |  |                           |  | - |          |  |  | 310 |  |  |  | 11,828 | 





22Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





LOANS AND ADVANCES TO CUSTOMERS

We provide lending facilities primarily to personal customers in the form of mortgages secured on residential properties and lending facilities to corporate customers.
Purchase and resale agreements represent business with professional non-bank customers by the Short-Term-Markets business.

Geographical analysis

The geographical analysis of balances below is based on the location of the office of lending. For geographical analysis based on the domicile of the borrower rather
than the office of lending, see Country risk exposures in the Risk review, including details of balances with other Banco Santander companies.

The
balances are stated before deducting impairment loss allowances and include loans and advances to customers classified in the balance sheet as trading assets, financial assets designated at fair value, or loans and receivables securities.



|                                                                           |  |         |         |  |         |  |         |         |  |  |         |  |  |         |         |  |  |  |         | 
|-------------------------------------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  | ------- | ------- |  |  |  | ------- | 
|                                                                           |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m |  |  | 2013
£m |  |  | 2012
£m |        
|UK                                                                         |  |         |         |  |         |  |         |         |  |  |         |  |  |         |         |  |  |  |         | 
|Advances secured on residential property                                   |  |         | 154,725 |  |         |  | 153,259 |         |  |  | 150,436 |  |  |         | 149,017 |  |  |  | 157,304 | 
|Corporate loans                                                            |  |         | 33,303  |  |         |  | 33,464  |         |  |  | 32,262  |  |  |         | 29,799  |  |  |  | 29,571  | 
|Finance leases                                                             |  |         | 6,730   |  |         |  | 6,306   |         |  |  | 2,639   |  |  |         | 3,158   |  |  |  | 3,061   | 
|Other secured advances                                                     |  |         | 10      |  |         |  | 13      |         |  |  | 15      |  |  |         | -       |  |  |  | -       | 
|Other unsecured advances                                                   |  |         | 8,429   |  |         |  | 7,916   |         |  |  | 7,043   |  |  |         | 5,732   |  |  |  | 6,733   | 
|Purchase and resale agreements                                             |  |         | 6,199   |  |         |  | 1,516   |         |  |  | 1,237   |  |  |         | 4,210   |  |  |  | 2,512   | 
|Loans and receivables securities                                           |  |         | 255     |  |         |  | 51      |         |  |  | 42      |  |  |         | 855     |  |  |  | 769     | 
|Amounts due from parent, fellow subsidiaries,associates and joint
ventures |  |         | 1,117   |  |         |  | 1,369   |         |  |  | 797     |  |  |         | 813     |  |  |  | 347     | 
|Total UK                                                                   |  |         | 210,768 |  |         |  | 203,894 |         |  |  | 194,471 |  |  |         | 193,584 |  |  |  | 200,297 | 
|Non-UK                                                                     |  |         |         |  |         |  |         |         |  |  |         |  |  |         |         |  |  |  |         | 
|Advances secured on residential property                                   |  |         | 2       |  |         |  | 2       |         |  |  | 4       |  |  |         | 5       |  |  |  | 6       | 
|Corporate loans                                                            |  |         | 406     |  |         |  | 337     |         |  |  | -       |  |  |         | -       |  |  |  | -       | 
|Other unsecured advances                                                   |  |         | 104     |  |         |  | 35      |         |  |  | -       |  |  |         | 31      |  |  |  | 25      | 
|Purchase and resale agreements                                             |  |         | 1,756   |  |         |  | 2,836   |         |  |  | 963     |  |  |         | -       |  |  |  | 4,950   | 
|Loans and receivables securities                                           |  |         | -       |  |         |  | -       |         |  |  | 67      |  |  |         | -       |  |  |  | -       | 
|Total non-UK                                                               |  |         | 2,268   |  |         |  | 3,210   |         |  |  | 1,034   |  |  |         | 36      |  |  |  | 4,981   | 
|Total                                                                      |  |         | 213,036 |  |         |  | 207,104 |         |  |  | 195,505 |  |  |         | 193,620 |  |  |  | 205,278 | 
|Less: impairment loss allowances                                           |  |         | (989)   |  |         |  | (1,157) |         |  |  | (1,439) |  |  |         | (1,555) |  |  |  | (1,802) | 
|Total, net of impairment loss allowances                                   |  |         | 212,047 |  |         |  | 205,947 |         |  |  | 194,066 |  |  |         | 192,065 |  |  |  | 203,476 | 

For analysis of the impairment loss allowance and loans and receivables securities, see Notes 15 and 18 to the Consolidated Financial
Statements.

No single concentration of loans and advances above, except for advances secured on residential properties and corporate loans, is more than 10% of
total loans and advances, and no individual country, except the UK, is more than 5% of total loans and advances.





Santander UK plc23



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##### Table of Contents



Annual Report 2016

Financial review









Maturity analysis

The following table shows loans and advances to customers
by maturity at 31 December 2016. Overdrafts are included as on-demand. Loans and advances are included at their contractual maturity; no account is taken of a customers ability to repay early where it exists.



|                                                                   |  |              |       |  |                                |  |        |                                                      |  |  |                                                     |  |  |                                                     |        |  |                          |  |        |          |  |  |         |  |  |  |         | 
|------------------------------------------------------------------ |  | ------------ | ----- |  | ------------------------------ |  | ------ | ---------------------------------------------------- |  |  | --------------------------------------------------- |  |  | --------------------------------------------------- | ------ |  | ------------------------ |  | ------ | -------- |  |  | ------- |  |  |  | ------- | 
|                                                                   |  | On demand
£m |       |  | In not morethan threemonths
£m |  |        | In more thanthree months butnot more
thanone year £m |  |  | In more than oneyear but not morethan five
years £m |  |  | In more than fiveyears but notmore
than tenyears £m |        |  | In more thanten years
£m |  |        | Total
£m | 
|UK                                                                 |  |              |       |  |                                |  |        |                                                      |  |  |                                                     |  |  |                                                     |        |  |                          |  |        |          |  |  |         |  |  |  |         | 
|Advances secured on residential property                           |  |              | 2     |  |                                |  | 716    |                                                      |  |  | 802                                                 |  |  |                                                     | 6,597  |  |                          |  | 17,795 |          |  |  | 128,813 |  |  |  | 154,725 | 
|Corporate loans                                                    |  |              | 514   |  |                                |  | 1,234  |                                                      |  |  | 2,561                                               |  |  |                                                     | 16,289 |  |                          |  | 3,794  |          |  |  | 8,911   |  |  |  | 33,303  | 
|Finance leases                                                     |  |              | -     |  |                                |  | 1,324  |                                                      |  |  | 2,145                                               |  |  |                                                     | 3,132  |  |                          |  | 45     |          |  |  | 84      |  |  |  | 6,730   | 
|Other secured advances                                             |  |              | -     |  |                                |  | -      |                                                      |  |  | -                                                   |  |  |                                                     | 1      |  |                          |  | 9      |          |  |  | -       |  |  |  | 10      | 
|Other unsecured advances                                           |  |              | 2,152 |  |                                |  | 2,633  |                                                      |  |  | 293                                                 |  |  |                                                     | 3,006  |  |                          |  | 86     |          |  |  | 259     |  |  |  | 8,429   | 
|Purchase and resale agreements                                     |  |              | -     |  |                                |  | 2,234  |                                                      |  |  | 3,965                                               |  |  |                                                     | -      |  |                          |  | -      |          |  |  | -       |  |  |  | 6,199   | 
|Loans and receivables securities                                   |  |              | 2     |  |                                |  | -      |                                                      |  |  | -                                                   |  |  |                                                     | -      |  |                          |  | 238    |          |  |  | 15      |  |  |  | 255     | 
|Amounts due from fellow subsidiaries,associates and joint
ventures |  |              | 6     |  |                                |  | 1,094  |                                                      |  |  | -                                                   |  |  |                                                     | -      |  |                          |  | 17     |          |  |  | -       |  |  |  | 1,117   | 
|Total UK                                                           |  |              | 2,676 |  |                                |  | 9,235  |                                                      |  |  | 9,766                                               |  |  |                                                     | 29,025 |  |                          |  | 21,984 |          |  |  | 138,082 |  |  |  | 210,768 | 
|Non-UK                                                             |  |              |       |  |                                |  |        |                                                      |  |  |                                                     |  |  |                                                     |        |  |                          |  |        |          |  |  |         |  |  |  |         | 
|Advances secured on residential property                           |  |              | -     |  |                                |  | -      |                                                      |  |  | -                                                   |  |  |                                                     | -      |  |                          |  | 1      |          |  |  | 1       |  |  |  | 2       | 
|Corporate loans                                                    |  |              | -     |  |                                |  | -      |                                                      |  |  | 406                                                 |  |  |                                                     | -      |  |                          |  | -      |          |  |  | -       |  |  |  | 406     | 
|Other unsecured advances                                           |  |              | 104   |  |                                |  | -      |                                                      |  |  | -                                                   |  |  |                                                     | -      |  |                          |  | -      |          |  |  | -       |  |  |  | 104     | 
|Purchase and resale agreements                                     |  |              | -     |  |                                |  | 1,330  |                                                      |  |  | 426                                                 |  |  |                                                     | -      |  |                          |  | -      |          |  |  | -       |  |  |  | 1,756   | 
|Loans and receivables securities                                   |  |              | -     |  |                                |  | -      |                                                      |  |  | -                                                   |  |  |                                                     | -      |  |                          |  | -      |          |  |  | -       |  |  |  | -       | 
|Total non-UK                                                       |  |              | 104   |  |                                |  | 1,330  |                                                      |  |  | 832                                                 |  |  |                                                     | -      |  |                          |  | 1      |          |  |  | 1       |  |  |  | 2,268   | 
|Total                                                              |  |              | 2,780 |  |                                |  | 10,565 |                                                      |  |  | 10,598                                              |  |  |                                                     | 29,025 |  |                          |  | 21,985 |          |  |  | 138,083 |  |  |  | 213,036 | 
|Of which:                                                          |  |              |       |  |                                |  |        |                                                      |  |  |                                                     |  |  |                                                     |        |  |                          |  |        |          |  |  |         |  |  |  |         | 
| Fixed interest rate                                              |  |              | 114   |  |                                |  | 5,029  |                                                      |  |  | 6,943                                               |  |  |                                                     | 9,442  |  |                          |  | 8,598  |          |  |  | 89,089  |  |  |  | 119,215 | 
| Variable interest rate                                           |  |              | 2,666 |  |                                |  | 5,536  |                                                      |  |  | 3,655                                               |  |  |                                                     | 19,583 |  |                          |  | 13,387 |          |  |  | 48,994  |  |  |  | 93,821  | 
|Total                                                              |  |              | 2,780 |  |                                |  | 10,565 |                                                      |  |  | 10,598                                              |  |  |                                                     | 29,025 |  |                          |  | 21,985 |          |  |  | 138,083 |  |  |  | 213,036 | 
|Of which:                                                          |  |              |       |  |                                |  |        |                                                      |  |  |                                                     |  |  |                                                     |        |  |                          |  |        |          |  |  |         |  |  |  |         | 
| Interest-only advances secured on
residential property           |  |              | -     |  |                                |  | 707    |                                                      |  |  | 784                                                 |  |  |                                                     | 4,964  |  |                          |  | 9,930  |          |  |  | 35,949  |  |  |  | 52,334  | 

Our policy is to hedge fixed-rate loans and advances to customers using derivatives, or by matching with other on-balance sheet interest
rate exposures.

We manage our balance sheet on a behavioural basis, rather than on the basis of contractual maturity. Many loans are repaid before their legal
maturity, particularly advances secured on residential property.

Impairment loss allowances

See Note 1 to the Consolidated Financial Statements for our impairment loss allowances policy. See Note 15 to the Consolidated Financial Statements for more on our
impairment loss allowances on loans and advances to customers.

DERIVATIVE ASSETS AND LIABILITIES



|                   |  |         |        |  |         |  |        |         |  |  |        | 
|------------------ |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------ | 
|                   |  | 2016
£m |        |  | 2015
£m |  |        | 2014
£m | 
|Assets             |  |         |        |  |         |  |        |         |  |  |        | 
|- Held for trading |  |         | 19,102 |  |         |  | 18,509 |         |  |  | 20,235 | 
|- Held for hedging |  |         | 6,369  |  |         |  | 2,402  |         |  |  | 2,786  | 
|                   |  |         | 25,471 |  |         |  | 20,911 |         |  |  | 23,021 | 
|Liabilities        |  |         |        |  |         |  |        |         |  |  |        | 
|- Held for trading |  |         | 21,223 |  |         |  | 18,905 |         |  |  | 20,462 | 
|- Held for hedging |  |         | 1,880  |  |         |  | 2,603  |         |  |  | 2,270  | 
|                   |  |         | 23,103 |  |         |  | 21,508 |         |  |  | 22,732 | 

We hold derivatives for trading or for risk management purposes. All derivatives are classified as held at fair value through profit or
loss. For accounting purposes, we choose to designate some derivatives in a hedging relationship if they meet specific criteria. Our main hedging derivatives are interest rate and cross-currency swaps, which we use to hedge fixed-rate lending and
structured savings products and medium-term note issuances, capital issuances and other capital markets funding. For more on our derivative activities, see Note 12 to the Consolidated Financial Statements.

Commercial Banking and Global Corporate Banking deal with commercial customers who wish to enter into derivative contracts. Any market risk arising from such
transactions is hedged by Global Corporate Banking. Global Corporate Banking is responsible for implementing our derivative hedging with the external market together with its own trading activities. For more on market risk, see the Risk review.





24Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





TANGIBLE FIXED ASSETS



|                                             |  |         |       |  |         |  |       |         |  |  |       | 
|-------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                             |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m | 
|Property, plant and equipment                |  |         | 1,491 |  |         |  | 1,597 |         |  |  | 1,624 | 
|Capital expenditure incurred during the year |  |         | 161   |  |         |  | 271   |         |  |  | 370   | 

For details of capital expenditure contracted but not provided for, see Note 23 to the Consolidated Financial Statements. We had 1,140
property interests at 31 December 2016 (2015: 1,173). They consisted of 276 freeholds (2015: 299) and 864 operating lease interests (2015: 875), and occupied a total floor space of 465,580 square metres (2015: 468,834 square metres).

The number of property interests is more than the number of individual properties as we have more than one interest in some properties. Most of our property interests
are retail branches. We did not occupy 70 of our properties (2015: 127) at 31 December 2016. 878 (2015: 897) of our individual properties are in the UK and none are in Europe or the US (2015: none). There are no material environmental issues
associated with the use of our properties.

At 31 December 2016, we had 15 principal sites including our headquarters (2015: 16). We use them for our
significant business operations, including Technology and Operations; People and Talent; Retail Banking; Commercial Banking; Global Corporate Banking; Telephone Sales and Servicing; Complaints Handling; Debt Management; Finance; Compliance;
Marketing; and IT Operations including Data Centres.

We believe our existing properties (including properties we lease) and those under construction are adequate
and suitable for our current business and our future business needs. All our properties are adequately maintained.

RETIREMENT BENEFIT PLANS



|                               |  |         |       |  |         |  |       |         |  |  |       | 
|------------------------------ |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                               |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m | 
|Retirement benefit assets      |  |         | 398   |  |         |  | 556   |         |  |  | 315   | 
|Retirement benefit obligations |  |         | (262) |  |         |  | (110) |         |  |  | (199) | 

We operate defined contribution and defined benefit pension schemes, and post-retirement medical benefit plans. For more, see Note 34 to
the Consolidated Financial Statements.

DEPOSITS BY BANKS

The balances below include deposits by banks classified in the balance sheet as trading liabilities.



|                         |  |         |        |  |         |  |        |         |  |  |        | 
|------------------------ |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------ | 
|                         |  | 2016
£m |        |  | 2015
£m |  |        | 2014
£m | 
|Year-end balance(1)      |  |         | 13,969 |  |         |  | 11,055 |         |  |  | 15,437 | 
|Average balance(2)       |  |         | 12,634 |  |         |  | 8,680  |         |  |  | 16,018 | 
|Average interest
rate(2) |  |         | 0.62%  |  |         |  | 0.99%  |         |  |  | 1.01%  | 

|(1) | The year-end deposits by banks balance includes non-interest bearing items in the course of transmission of £308m (2015: £326m, 2014: £308m).
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Calculated using monthly data.
|--- | ------------------------------

At 31 December 2016, deposits by foreign banks were £1,995m (2015:
£6,629m, 2014: £3,840m). The following table shows the average balances of deposits by banks by geography.



|       |  |                                 |        |  |         |  |       |         |  |  |        | 
|------ |  | ------------------------------- | ------ |  | ------- |  | ----- | ------- |  |  | ------ | 
|       |  | Average: year ended 31 December |       
|       |  | 2016
£m                         |        |  | 2015
£m |  |       | 2014
£m | 
|UK     |  |                                 | 12,237 |  |         |  | 8,539 |         |  |  | 16,016 | 
|Non-UK |  |                                 | 397    |  |         |  | 141   |         |  |  | 2      | 
|       |  |                                 | 12,634 |  |         |  | 8,680 |         |  |  | 16,018 | 





Santander UK plc25



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##### Table of Contents



Annual Report 2016

Financial review









DEPOSITS BY CUSTOMERS

The
balances below include deposits by customers classified in the balance sheet as trading liabilities.



|                                                                                                                                |  |                                 |         |  |         |  |         |         |  |  |         | 
|------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- | 
|                                                                                                                                |  | 2016
£m                         |         |  | 2015
£m |  |         | 2014
£m | 
|Year-end balance                                                                                                                |  |                                 | 186,257 |  |         |  | 171,225 |         |  |  | 158,505 | 
|Average balance(1)                                                                                                              |  |                                 | 183,599 |  |         |  | 160,670 |         |  |  | 155,001 | 
|Average interest
rate(1)                                                                                                        |  |                                 | 1.03%   |  |         |  | 1.24%   |         |  |  | 1.34%   | 
|(1)  Calculated using monthly data.
 The following tables show the average balances of deposits by geography and customer type. | 
|                                                                                                                                |  | Average: year ended 31 December |        
|                                                                                                                                |  | 2016
£m                         |         |  | 2015
£m |  |         | 2014
£m | 
|UK                                                                                                                              |  |                                 |         |  |         |  |         |         |  |  |         | 
|Demand deposits                                                                                                                 |  |                                 | 131,521 |  |         |  | 116,462 |         |  |  | 102,346 | 
|Time deposits                                                                                                                   |  |                                 | 29,035  |  |         |  | 32,506  |         |  |  | 37,219  | 
|Other deposits                                                                                                                  |  |                                 | 18,743  |  |         |  | 8,031   |         |  |  | 8,854   | 
|                                                                                                                                |  |                                 | 179,299 |  |         |  | 156,999 |         |  |  | 148,419 | 
|Non-UK                                                                                                                          |  |                                 |         |  |         |  |         |         |  |  |         | 
|Demand deposits                                                                                                                 |  |                                 | -       |  |         |  | 2,002   |         |  |  | 2,202   | 
|Time deposits                                                                                                                   |  |                                 | 252     |  |         |  | 953     |         |  |  | 1,307   | 
|Other deposits                                                                                                                  |  |                                 | 4,048   |  |         |  | 716     |         |  |  | 3,073   | 
|                                                                                                                                |  |                                 | 4,300   |  |         |  | 3,671   |         |  |  | 6,582   | 
|                                                                                                                                |  |                                 | 183,599 |  |         |  | 160,670 |         |  |  | 155,001 | 

We obtain retail demand and time deposits either through our branch network, cahoot or remotely. We also obtain retail demand and time
deposits outside the UK, mainly through Abbey National International Limited and the Isle of Man branch of Santander UK plc. They are all interest-bearing and interest rates are varied from time to time in response to competitive conditions.

Demand deposits

Demand deposits consist of savings and current accounts.
Savings products comprise Individual Savings Accounts, instant saver accounts, remote access accounts, and other accounts which allow the customer a limited number of notice-free withdrawals per year depending on the account balance. These accounts
are treated as demand deposits because the entire balance may be withdrawn on demand without penalty as one of the notice-free withdrawals.

Time deposits

Time deposits consist of notice accounts, which require customers to give notice before making a withdrawal, and bond accounts, which require a minimum deposit.
In each of these accounts there is an interest penalty for early withdrawal.

Other deposits

Other deposits are either obtained through the money markets or for which interest rates are quoted on request rather than publicly advertised. These deposits have a
fixed maturity and their interest rates reflect inter-bank money market rates.





26Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





SHORT-TERM BORROWINGS

We include short-term borrowings in deposits by banks, trading liabilities, financial liabilities designated at fair value and debt securities in issue. We do not show
short-term borrowings separately on our balance sheet. Short-term borrowings are amounts payable for short-term obligations that are US Federal funds purchased and securities sold under repurchase agreements, commercial paper, borrowings from banks,
borrowings from factors or other financial institutions and any other short-term borrowings reflected on the balance sheet. The table below shows short-term borrowings for each of the years ended 31 December 2016, 2015 and 2014.



|                                             |  |         |        |  |         |  |        |         |  |  |        | 
|-------------------------------------------- |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------ | 
|                                             |  | 2016
£m |        |  | 2015
£m |  |        | 2014
£m | 
|Securities sold under repurchase agreements  |  |         |        |  |         |  |        |         |  |  |        | 
|- Year-end balance                           |  |         | 10,104 |  |         |  | 10,567 |         |  |  | 9,420  | 
|- Year-end interest rate                     |  |         | 0.11%  |  |         |  | 0.23%  |         |  |  | 0.35%  | 
|- Average balance(1)                         |  |         | 16,109 |  |         |  | 15,833 |         |  |  | 16,816 | 
|- Average interest rate(1)                   |  |         | 0.44%  |  |         |  | 0.39%  |         |  |  | 0.35%  | 
|- Maximum
balance(1)                         |  |         | 23,385 |  |         |  | 23,677 |         |  |  | 22,066 | 
|Commercial paper                             |  |         |        |  |         |  |        |         |  |  |        | 
|- Year-end balance                           |  |         | 3,132  |  |         |  | 2,744  |         |  |  | 4,364  | 
|- Year-end interest rate                     |  |         | 0.88%  |  |         |  | 0.41%  |         |  |  | 0.24%  | 
|- Average balance(1)                         |  |         | 3,220  |  |         |  | 3,772  |         |  |  | 4,404  | 
|- Average interest rate(1)                   |  |         | 0.74%  |  |         |  | 0.30%  |         |  |  | 0.29%  | 
|- Maximum
balance(1)                         |  |         | 3,858  |  |         |  | 5,066  |         |  |  | 5,412  | 
|Borrowings from banks (Deposits by
banks)(2) |  |         |        |  |         |  |        |         |  |  |        | 
|- Year-end balance                           |  |         | 2,619  |  |         |  | 3,711  |         |  |  | 2,983  | 
|- Year-end interest rate                     |  |         | 0.09%  |  |         |  | 0.07%  |         |  |  | 0.38%  | 
|- Average balance(1)                         |  |         | 3,350  |  |         |  | 3,004  |         |  |  | 3,135  | 
|- Average interest rate(1)                   |  |         | 0.10%  |  |         |  | 0.05%  |         |  |  | 0.07%  | 
|- Maximum
balance(1)                         |  |         | 4,861  |  |         |  | 3,905  |         |  |  | 4,518  | 
|Negotiable certificates of deposit           |  |         |        |  |         |  |        |         |  |  |        | 
|- Year-end balance                           |  |         | 5,217  |  |         |  | 4,468  |         |  |  | 3,806  | 
|- Year-end interest rate                     |  |         | 0.31%  |  |         |  | 0.43%  |         |  |  | 0.36%  | 
|- Average balance(1)                         |  |         | 3,970  |  |         |  | 4,468  |         |  |  | 4,044  | 
|- Average interest rate(1)                   |  |         | 0.36%  |  |         |  | 0.41%  |         |  |  | 0.39%  | 
|- Maximum
balance(1)                         |  |         | 5,614  |  |         |  | 5,666  |         |  |  | 5,142  | 
|Other debt securities in issue               |  |         |        |  |         |  |        |         |  |  |        | 
|- Year-end balance                           |  |         | 7,904  |  |         |  | 5,238  |         |  |  | 4,446  | 
|- Year-end interest rate                     |  |         | 1.57%  |  |         |  | 2.60%  |         |  |  | 2.52%  | 
|- Average balance(1)                         |  |         | 7,806  |  |         |  | 4,133  |         |  |  | 4,858  | 
|- Average interest rate(1)                   |  |         | 1.76%  |  |         |  | 2.60%  |         |  |  | 2.89%  | 
|- Maximum
balance(1)                         |  |         | 8,267  |  |         |  | 5,238  |         |  |  | 5,975  | 

|(1) | Calculated using monthly weighted average data.
|--- | -----------------------------------------------

|(2) | The year-end deposits by banks balance includes non-interest bearing items in the course of transmission of £308m (2015: £326m, 2014: £308m).
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------

Abbey National Treasury Services plc and its US Branch issue commercial paper. Abbey National Treasury Services plc issues commercial paper with a minimum issuance
amount of euro 100,000 with a maximum maturity of 364 days. Abbey National Treasury Services plc, US Branch issues commercial paper with a minimum denomination of US$250,000, with a maximum maturity of 270 days.

Certificates of deposit and certain time deposits

The following table shows
the maturities of our certificates of deposit and other large wholesale time deposits from non-banks over £50,000 (or the non-sterling equivalent of £50,000) at 31 December 2016. A proportion of our retail time deposits also exceeds
£50,000 at any given date; however, the ease of access and other terms of these accounts means that they may not have been in excess of £50,000 throughout 2016. Also, the customers may withdraw their funds on demand by paying an interest
penalty. For these reasons, no maturity analysis is presented for such deposits.



|                         |  |                              |       |  |                                                          |  |       |                                                      |  |  |                         |  |  |          |     |  |  |  |       | 
|------------------------ |  | ---------------------------- | ----- |  | -------------------------------------------------------- |  | ----- | ---------------------------------------------------- |  |  | ----------------------- |  |  | -------- | --- |  |  |  | ----- | 
|                         |  | Not more than threemonths
£m |       |  | In more than three months butnot more
than six months £m |  |       | In more than six months butnot more than
one year £m |  |  | In more than oneyear
£m |  |  | Total
£m |    
|Certificates of deposit: |  |                              |       |  |                                                          |  |       |                                                      |  |  |                         |  |  |          |     |  |  |  |       | 
|- UK                     |  |                              | 642   |  |                                                          |  | 1,634 |                                                      |  |  | 514                     |  |  |          | -   |  |  |  | 2,790 | 
|- Non-UK                 |  |                              | 1,898 |  |                                                          |  | 196   |                                                      |  |  | 333                     |  |  |          | -   |  |  |  | 2,427 | 
|Wholesale time deposits: |  |                              |       |  |                                                          |  |       |                                                      |  |  |                         |  |  |          |     |  |  |  |       | 
|- UK                     |  |                              | 810   |  |                                                          |  | 237   |                                                      |  |  | 219                     |  |  |          | 157 |  |  |  | 1,423 | 
|                         |  |                              | 3,350 |  |                                                          |  | 2,067 |                                                      |  |  | 1,066                   |  |  |          | 157 |  |  |  | 6,640 | 





Santander UK plc27



---

##### Table of Contents



Annual Report 2016

Financial review









DEBT SECURITIES IN ISSUE

We
have issued debt securities in a range of maturities, interest rate structures and currencies, to meet our liquidity, funding and capital needs.



|                                               |  |      |  |         |        |  |         |  |        |         |  |  |        | 
|---------------------------------------------- |  | ---- |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------ | 
|                                               |  | Note |  | 2016
£m |        |  | 2015
£m |  |        | 2014
£m | 
|Trading liabilities                            |  | 28   |  |         | 2,801  |  |         |  | 2,794  |         |  |  | 3,211  | 
|Financial liabilities designated at fair value |  | 29   |  |         | 1,914  |  |         |  | 2,016  |         |  |  | 2,848  | 
|Debt securities in issue                       |  | 30   |  |         | 50,346 |  |         |  | 49,615 |         |  |  | 51,790 | 
|Subordinated liabilities                       |  | 31   |  |         | 4,303  |  |         |  | 3,885  |         |  |  | 4,002  | 
|                                               |  |      |  |         | 59,364 |  |         |  | 58,310 |         |  |  | 61,851 | 

We classify most of the debt securities that we have issued as Debt securities in issue in our balance sheet. We classify the
rest of them separately in the balance sheet, either because they qualify as Trading liabilities or we designated them upon initial recognition as Financial liabilities designated at fair value, or there are key differences
in their legal terms, such as liquidation preferences, or subordination of the rights of holders to the rights of holders of certain other liabilities (Subordinated liabilities). See Notes 28 to 31 to the Consolidated Financial Statements.

Our commercial balance sheet is almost entirely denominated in sterling. So when we raise funding by issuing debt securities in currencies other than sterling (mainly
euro, US dollars and Japanese yen) we enter into cross-currency derivatives which swap the foreign currency liabilities back into sterling.

CONTRACTUAL OBLIGATIONS

For the amounts and maturities of contractual obligations in respect of guarantees, see Note 5 and 43 to the Consolidated
Financial Statements. Other contractual obligations, including payments of principal and interest where applicable, are shown in the table below. Interest payments are included in the maturity column of the interest payments themselves, and are
calculated using current interest rates.



|                                 |  |                        |         |  |                     |  |         |              |  |  |              |  |  |                 |        |  |  |  |        | 
|-------------------------------- |  | ---------------------- | ------- |  | ------------------- |  | ------- | ------------ |  |  | ------------ |  |  | --------------- | ------ |  |  |  | ------ | 
|                                 |  | Payments due by period |        
|                                 |  | Total
£m               |         |  | Less than 1 year
£m |  |         | 1-3 years
£m |  |  | 3-5 years
£m |  |  | Over 5 years
£m |       
|Deposits by banks (1) (2)        |  |                        | 13,969  |  |                     |  | 8,125   |              |  |  | 1,238        |  |  |                 | 4,513  |  |  |  | 93     | 
|Deposits by customers - repos(1) |  |                        | 8,520   |  |                     |  | 8,018   |              |  |  | -            |  |  |                 | -      |  |  |  | 502    | 
|Deposits by customers - other(2) |  |                        | 177,737 |  |                     |  | 164,590 |              |  |  | 7,329        |  |  |                 | 3,979  |  |  |  | 1,839  | 
|Derivative financial instruments |  |                        | 23,103  |  |                     |  | 2,562   |              |  |  | 2,845        |  |  |                 | 1,980  |  |  |  | 15,716 | 
|Debt securities in issue(3)      |  |                        | 55,061  |  |                     |  | 17,077  |              |  |  | 12,061       |  |  |                 | 9,956  |  |  |  | 15,967 | 
|Subordinated liabilities         |  |                        | 4,303   |  |                     |  | 58      |              |  |  | -            |  |  |                 | -      |  |  |  | 4,245  | 
|Retirement benefit obligations   |  |                        | 11,082  |  |                     |  | 287     |              |  |  | 634          |  |  |                 | 722    |  |  |  | 9,439  | 
|Operating lease obligations      |  |                        | 468     |  |                     |  | 82      |              |  |  | 155          |  |  |                 | 97     |  |  |  | 134    | 
|Purchase obligations             |  |                        | 412     |  |                     |  | 412     |              |  |  | -            |  |  |                 | -      |  |  |  | -      | 
|                                 |  |                        | 294,655 |  |                     |  | 201,211 |              |  |  | 24,262       |  |  |                 | 21,247 |  |  |  | 47,935 | 

|(1) | Securities sold under repurchase agreements.
|--- | --------------------------------------------

|(2) | Includes deposits by banks and deposits by customers classified in the balance sheet as trading liabilities and financial liabilities designated at fair value.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Includes debt securities in issue classified in the balance sheet as trading liabilities and financial liabilities designated at fair value.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------

The table is based on contractual maturities, so it takes no account of call features in our Subordinated liabilities. The repayment terms of the debt securities may be
accelerated in line with the covenants in the loan agreements.

For details of deposits by banks and deposits by customers, see Notes 26 and 27 to the Consolidated
Financial Statements. We have entered into outsourcing contracts where, in some circumstances, there is no minimum specified spending requirement. In these cases, anticipated spending volumes have been included within purchase obligations.

Under current conditions, our working capital is expected to be sufficient for our present needs and to pursue our planned business strategies.

OFF-BALANCE SHEET ARRANGEMENTS

In the ordinary course of business, we issue guarantees on behalf of customers. The main guarantees we issue are standby letters of credit and performance bonds under
which we take on credit on behalf of customers when actual funding is not required. This is normally because a third party wont accept the credit risk of the customer. We include these guarantees in our impairment loss allowance assessment
with other forms of credit exposure.

In addition, we give representations, indemnities and warranties on the sale of our subsidiaries, businesses and other assets,
as is normal in such activity. The maximum potential amount of any claims made against these is usually much higher than actual settlements. We make provisions for our best estimate of the likely outcome, either at the time of sale, or later if we
receive more information.

See Note 35 to the Consolidated Financial Statements for more information on our guarantees, commitments and contingencies. See Note 21 to
the Consolidated Financial Statements for more information on our off-balance sheet arrangements.

In the ordinary course of business, we also enter into
securitisation transactions as set out in Note 16 to the Consolidated Financial Statements. We consolidate the securitisation companies and we continue to administer the assets. The securitisation companies provide us with an important source of
long-term funding and/or the ability to manage capital efficiently.





28Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





INTEREST RATE SENSITIVITY

Interest rate sensitivity is the relationship between interest rates and net interest income caused by the periodic repricing of assets and liabilities. Our largest
administered rate items are residential mortgages and retail deposits, most of which bear interest at variable rates.

We mitigate the impact of interest rate
movements on net interest income by repricing our variable rate mortgages and variable rate retail deposits separately, subject to competitive pressures. We also offer fixed-rate mortgages and savings products on which the interest rate is fixed for
an agreed period at the start of the contract. We manage the margin on fixed-rate products by using derivatives matching the fixed-rate profiles. We reduce the risk of prepayment by imposing early termination charges if the customers end their
contracts early.

We manage the risks from movements in interest rates as part of our overall non-trading position. We do this within limits as set out in the Risk
review.

Changes in net interest income - volume and rate analysis

The
following table shows changes in interest income, interest expense and net interest income (including amounts classified in discontinued operations). It allocates the effects between changes in volume and changes in rate. Volume and rate changes
have been calculated on the movement in the average balances and the change in the interest rates on average interest-earning assets and average interest-bearing liabilities. The changes caused by movements in both volume and rate have been
allocated to rate changes.



|                                              |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|--------------------------------------------- |  | ------------ | ----- |  | ------------------------------------- |  | ---- | ------------ |  |  | ------------------------------------- |  |  | --------- | ----- |  | ------- |  | ---- |  |  |  | ----- | 
|                                              |  | 2016/2015    |       |  | 2015/2014                             | 
|                                              |  | Total
change |       |  | Changes due to
increase/(decrease) in |  |      | Total
change |  |  | Changes due to
increase/(decrease) in | 
|                                              |  | £m           |       |  | Volume
£m                             |  |      | Rate
£m      |  |  | £m                                    |  |  | Volume
£m |       |  | Rate
£m | 
|Interest income                               |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|Loans and advances to banks:                  |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | (7)   |  |                                       |  | 3    |              |  |  | (10)                                  |  |  |           | (12)  |  |         |  | 9    |  |  |  | (21)  | 
|- Non-UK                                      |  |              | 19    |  |                                       |  | 1    |              |  |  | 18                                    |  |  |           | (14)  |  |         |  | (11) |  |  |  | (3)   | 
|Loans and advances to customers:              |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | (296) |  |                                       |  | 152  |              |  |  | (448)                                 |  |  |           | (58)  |  |         |  | 290  |  |  |  | (348) | 
|- Non-UK                                      |  |              | 3     |  |                                       |  | 1    |              |  |  | 2                                     |  |  |           | 1     |  |         |  | -    |  |  |  | 1     | 
|Other interest earning financial assets:      |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | 53    |  |                                       |  | 34   |              |  |  | 19                                    |  |  |           | (19)  |  |         |  | 13   |  |  |  | (32)  | 
|Total interest income                         |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | (250) |  |                                       |  | 189  |              |  |  | (439)                                 |  |  |           | (89)  |  |         |  | 312  |  |  |  | (401) | 
|- Non-UK                                      |  |              | 22    |  |                                       |  | 2    |              |  |  | 20                                    |  |  |           | (13)  |  |         |  | (11) |  |  |  | (2)   | 
|                                              |  |              | (228) |  |                                       |  | 191  |              |  |  | (419)                                 |  |  |           | (102) |  |         |  | 301  |  |  |  | (403) | 
|Interest expense                              |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|Deposits by banks:                            |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | (9)   |  |                                       |  | -    |              |  |  | (9)                                   |  |  |           | (18)  |  |         |  | 3    |  |  |  | (21)  | 
|- Non-UK                                      |  |              | 2     |  |                                       |  | -    |              |  |  | 2                                     |  |  |           | -     |  |         |  | -    |  |  |  | -     | 
|Deposits by customers - demand:               |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | 55    |  |                                       |  | 172  |              |  |  | (117)                                 |  |  |           | 188   |  |         |  | 157  |  |  |  | 31    | 
|- Non-UK                                      |  |              | (13)  |  |                                       |  | (13) |              |  |  | -                                     |  |  |           | (8)   |  |         |  | (2)  |  |  |  | (6)   | 
|Deposits by customers - time:                 |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | (133) |  |                                       |  | (55) |              |  |  | (78)                                  |  |  |           | (258) |  |         |  | (98) |  |  |  | (160) | 
|- Non-UK                                      |  |              | (11)  |  |                                       |  | (12) |              |  |  | 1                                     |  |  |           | (12)  |  |         |  | (8)  |  |  |  | (4)   | 
|Deposits by customers - other:                |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | 16    |  |                                       |  | 73   |              |  |  | (57)                                  |  |  |           | (4)   |  |         |  | (8)  |  |  |  | 4     | 
|- Non-UK                                      |  |              | (2)   |  |                                       |  | (2)  |              |  |  | -                                     |  |  |           | 1     |  |         |  | -    |  |  |  | 1     | 
|Subordinated debt:                            |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | 5     |  |                                       |  | 10   |              |  |  | (5)                                   |  |  |           | (13)  |  |         |  | (15) |  |  |  | 2     | 
|Debt securities in issue:                     |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | (179) |  |                                       |  | 2    |              |  |  | (181)                                 |  |  |           | (110) |  |         |  | -    |  |  |  | (110) | 
|- Non-UK                                      |  |              | 24    |  |                                       |  | -    |              |  |  | 24                                    |  |  |           | 4     |  |         |  | (1)  |  |  |  | 5     | 
|Other interest-bearing financial liabilities: |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | 10    |  |                                       |  | 4    |              |  |  | 6                                     |  |  |           | (13)  |  |         |  | (10) |  |  |  | (3)   | 
|Total interest expense                        |  |              |       |  |                                       |  |      |              |  |  |                                       |  |  |           |       |  |         |  |      |  |  |  |       | 
|- UK                                          |  |              | (235) |  |                                       |  | 206  |              |  |  | (441)                                 |  |  |           | (228) |  |         |  | 29   |  |  |  | (257) | 
|- Non-UK                                      |  |              | -     |  |                                       |  | (27) |              |  |  | 27                                    |  |  |           | (15)  |  |         |  | (11) |  |  |  | (4)   | 
|                                              |  |              | (235) |  |                                       |  | 179  |              |  |  | (414)                                 |  |  |           | (243) |  |         |  | 18   |  |  |  | (261) | 
|Net interest income                           |  |              | 7     |  |                                       |  | 12   |              |  |  | (5)                                   |  |  |           | 141   |  |         |  | 283  |  |  |  | (142) | 





Santander UK plc29



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##### Table of Contents



Annual Report 2016

Financial review









AVERAGE BALANCE SHEET

Year-end balances may not reflect activity throughout the year, so we present average balance sheets below. They show averages for our significant categories of assets
and liabilities, and the related interest income and expense.



|                                                                |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|--------------------------------------------------------------- |  | --------------------- | --------- |  | ---------------- |  | ------- | -------------- |  |  | --------------------- |  |  | ---------------- | --------- |  | -------------- |  | ------- | --------------------- |  |  | ---------------- |  |  | -------------- | --------- |  |  |  | ------- |  |  |  | ---- | 
|                                                                |  |                       |           |  |                  |  |         | 2016           |  |  |                       |  |  |                  |           |  | 2015           |  |         |                       |  |  |                  |  |  | 2014           |          
|                                                                |  | Average
Balance(1)
£m |           |  | Interest(4,5)
£m |  |         | Average
rate % |  |  | Average
balance(1)
£m |  |  | Interest(4,5)
£m |           |  | Average
rate % |  |         | Average
balance(1)
£m |  |  | Interest(4,5)
£m |  |  | Average
rate % |          
|Assets                                                          |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|Loans and advances to banks:                                    |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | 21,568    |  |                  |  | 92      |                |  |  | 0.43                  |  |  |                  | 20,859    |  |                |  | 99      |                       |  |  | 0.47             |  |  |                | 19,263    |  |  |  | 111     |  |  |  | 0.58 | 
|- Non-UK                                                        |  |                       | 6,941     |  |                  |  | 35      |                |  |  | 0.50                  |  |  |                  | 6,432     |  |                |  | 16      |                       |  |  | 0.25             |  |  |                | 10,078    |  |  |  | 30      |  |  |  | 0.30 | 
|Loans and advances to customers:(3)                             |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | 200,731   |  |                  |  | 6,194   |                |  |  | 3.09                  |  |  |                  | 196,148   |  |                |  | 6,490   |                       |  |  | 3.31             |  |  |                | 187,843   |  |  |  | 6,548   |  |  |  | 3.49 | 
|- Non-UK                                                        |  |                       | 377       |  |                  |  | 4       |                |  |  | 1.06                  |  |  |                  | 179       |  |                |  | 1       |                       |  |  | 0.56             |  |  |                | 5         |  |  |  | -       |  |  |  | -    | 
|Debt securities:                                                |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | 12,792    |  |                  |  | 142     |                |  |  | 1.11                  |  |  |                  | 9,300     |  |                |  | 89      |                       |  |  | 0.96             |  |  |                | 8,312     |  |  |  | 108     |  |  |  | 1.30 | 
|Total average interest-earning assets, interest income(2)       |  |                       | 242,409   |  |                  |  | 6,467   |                |  |  | 2.67                  |  |  |                  | 232,918   |  |                |  | 6,695   |                       |  |  | 2.87             |  |  |                | 225,501   |  |  |  | 6,797   |  |  |  | 3.01 | 
|Impairment loss allowances                                      |  |                       | (1,095)   |  |                  |  | -       |                |  |  | -                     |  |  |                  | (1,315)   |  |                |  | -       |                       |  |  | -                |  |  |                | (1,502)   |  |  |  | -       |  |  |  | -    | 
|Trading assets                                                  |  |                       | 21,798    |  |                  |  | -       |                |  |  | -                     |  |  |                  | 19,756    |  |                |  | -       |                       |  |  | -                |  |  |                | 18,549    |  |  |  | -       |  |  |  | -    | 
|Assets designated at FVTPL                                      |  |                       | 2,439     |  |                  |  | -       |                |  |  | -                     |  |  |                  | 2,737     |  |                |  | -       |                       |  |  | -                |  |  |                | 2,793     |  |  |  | -       |  |  |  | -    | 
|Derivatives and other non-interest-earning assets               |  |                       | 37,328    |  |                  |  | -       |                |  |  | -                     |  |  |                  | 32,278    |  |                |  | -       |                       |  |  | -                |  |  |                | 34,204    |  |  |  | -       |  |  |  | -    | 
|Total average assets                                            |  |                       | 302,879   |  |                  |  | -       |                |  |  | -                     |  |  |                  | 286,374   |  |                |  | -       |                       |  |  | -                |  |  |                | 279,545   |  |  |  | -       |  |  |  | -    | 
|Non-UK assets as a % of total                                   |  |                       | 2.42%     |  |                  |  | -       |                |  |  | -                     |  |  |                  | 2.31%     |  |                |  | -       |                       |  |  | -                |  |  |                | 3.61%     |  |  |  | -       |  |  |  | -    | 
|Liabilities                                                     |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|Deposits by banks:                                              |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | (7,162)   |  |                  |  | (54)    |                |  |  | 0.75                  |  |  |                  | (7,122)   |  |                |  | (63)    |                       |  |  | 0.88             |  |  |                | (6,855)   |  |  |  | (81)    |  |  |  | 1.18 | 
|- Non-UK                                                        |  |                       | (393)     |  |                  |  | (2)     |                |  |  | 0.51                  |  |  |                  | (139)     |  |                |  | -       |                       |  |  | -                |  |  |                | (2)       |  |  |  | -       |  |  |  | -    | 
|Deposits by customers - demand:                                 |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | (131,521) |  |                  |  | (1,381) |                |  |  | 1.05                  |  |  |                  | (116,462) |  |                |  | (1,326) |                       |  |  | 1.14             |  |  |                | (102,346) |  |  |  | (1,138) |  |  |  | 1.11 | 
|- Non-UK                                                        |  |                       | -         |  |                  |  | -       |                |  |  | -                     |  |  |                  | (2,002)   |  |                |  | (13)    |                       |  |  | 0.65             |  |  |                | (2,202)   |  |  |  | (21)    |  |  |  | 0.95 | 
|Deposits by customers - time:                                   |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | (29,035)  |  |                  |  | (381)   |                |  |  | 1.31                  |  |  |                  | (32,506)  |  |                |  | (514)   |                       |  |  | 1.58             |  |  |                | (37,219)  |  |  |  | (772)   |  |  |  | 2.07 | 
|- Non-UK                                                        |  |                       | (252)     |  |                  |  | (5)     |                |  |  | 1.98                  |  |  |                  | (953)     |  |                |  | (16)    |                       |  |  | 1.68             |  |  |                | (1,307)   |  |  |  | (28)    |  |  |  | 2.14 | 
|Deposits by customers - other:                                  |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | (10,213)  |  |                  |  | (124)   |                |  |  | 1.21                  |  |  |                  | (6,092)   |  |                |  | (108)   |                       |  |  | 1.77             |  |  |                | (6,542)   |  |  |  | (112)   |  |  |  | 1.71 | 
|- Non-UK                                                        |  |                       | -         |  |                  |  | -       |                |  |  | -                     |  |  |                  | (703)     |  |                |  | (2)     |                       |  |  | 0.28             |  |  |                | (1,141)   |  |  |  | (1)     |  |  |  | 0.09 | 
|Debt securities:                                                |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | (46,609)  |  |                  |  | (732)   |                |  |  | 1.57                  |  |  |                  | (46,531)  |  |                |  | (911)   |                       |  |  | 1.96             |  |  |                | (46,517)  |  |  |  | (1,021) |  |  |  | 2.19 | 
|- Non-UK                                                        |  |                       | (4,376)   |  |                  |  | (39)    |                |  |  | 0.89                  |  |  |                  | (4,427)   |  |                |  | (15)    |                       |  |  | 0.34             |  |  |                | (4,730)   |  |  |  | (11)    |  |  |  | 0.23 | 
|Subordinated liabilities:                                       |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | (4,163)   |  |                  |  | (143)   |                |  |  | 3.44                  |  |  |                  | (3,871)   |  |                |  | (138)   |                       |  |  | 3.56             |  |  |                | (4,285)   |  |  |  | (151)   |  |  |  | 3.52 | 
|Other interest-bearing liabilities:                             |  |                       |           |  |                  |  |         |                |  |  |                       |  |  |                  |           |  |                |  |         |                       |  |  |                  |  |  |                |           |  |  |  |         |  |  |  |      | 
|- UK                                                            |  |                       | (340)     |  |                  |  | (24)    |                |  |  | 7.06                  |  |  |                  | (269)     |  |                |  | (14)    |                       |  |  | 5.20             |  |  |                | (422)     |  |  |  | (27)    |  |  |  | 6.40 | 
|Total average interest-bearing liabilities, interest expense(2) |  |                       | (234,064) |  |                  |  | (2,885) |                |  |  | 1.23                  |  |  |                  | (221,077) |  |                |  | (3,120) |                       |  |  | 1.41             |  |  |                | (213,568) |  |  |  | (3,363) |  |  |  | 1.57 | 
|Trading liabilities                                             |  |                       | (19,068)  |  |                  |  | -       |                |  |  | -                     |  |  |                  | (18,873)  |  |                |  | -       |                       |  |  | -                |  |  |                | (22,242)  |  |  |  | -       |  |  |  | -    | 
|Liabilities designated at FVTPL                                 |  |                       | (2,467)   |  |                  |  | -       |                |  |  | -                     |  |  |                  | (2,391)   |  |                |  | -       |                       |  |  | -                |  |  |                | (3,556)   |  |  |  | -       |  |  |  | -    | 
|Derivatives and other non-interest- bearing liabilities         |  |                       | (31,068)  |  |                  |  | -       |                |  |  | -                     |  |  |                  | (28,876)  |  |                |  | -       |                       |  |  | -                |  |  |                | (26,603)  |  |  |  | -       |  |  |  | -    | 
|Equity                                                          |  |                       | (16,212)  |  |                  |  | -       |                |  |  | -                     |  |  |                  | (15,157)  |  |                |  | -       |                       |  |  | -                |  |  |                | (13,576)  |  |  |  | -       |  |  |  | -    | 
|Total average liabilities and equity                            |  |                       | (302,879) |  |                  |  | -       |                |  |  | -                     |  |  |                  | (286,374) |  |                |  | -       |                       |  |  | -                |  |  |                | (279,545) |  |  |  | -       |  |  |  | -    | 
|Non-UK liabilities as a % of total                              |  |                       | 1.66%     |  |                  |  | -       |                |  |  | -                     |  |  |                  | 2.87%     |  |                |  | -       |                       |  |  | -                |  |  |                | 3.36%     |  |  |  | -       |  |  |  | -    | 

|(1) | Average balances are based on monthly data.
|--- | -------------------------------------------

|(2) | The ratio of average interest-earning assets to interest-bearing liabilities for the year ended 31 December 2016 was 103.57% (2015: 105.36%, 2014: 105.59%).
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Loans and advances to customers include non-performing loans. See the Credit risk section of the Risk review.
|--- | ---------------------------------------------------------------------------------------------------------------

|(4) | The net interest margin for the year ended 31 December 2016 was 1.48% (2015: 1.53%, 2014: 1.52%). Net interest margin is calculated as net interest income divided by average interest earning assets.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | The interest spread for the year ended 31 December 2016 was 1.44% (2015: 1.46%, 2014: 1.44%). Interest spread is the difference between the rate of interest earned on average interest-earning assets and the rate of
interest paid on average interest-bearing liabilities.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





30Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |                  |  |               |  |      
| |  |  |  |  |  |  |  |  |  | ---------------- |  | ------------- |  | -----
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  | Income statement |  | Balance sheet |  | Cash 
| |  |  |  |  |  |  |  |  |  | review           |  | review        |  | flows





Cash flows



|                                         |  |         |         |  |         |  |         |         |  |  |          | 
|---------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | -------- | 
|                                         |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m | 
|Net cash flows from operating activities |  |         | 18,005  |  |         |  | (3,897) |         |  |  | (5,533)  | 
|Net cash flows from investing activities |  |         | (7,340) |  |         |  | (518)   |         |  |  | (4,145)  | 
|Net cash flows from financing activities |  |         | (6,388) |  |         |  | (2,914) |         |  |  | (361)    | 
|Change in cash and cash equivalents      |  |         | 4,277   |  |         |  | (7,329) |         |  |  | (10,039) | 

The major activities and transactions that affected Santander UKs cash flows during 2016, 2015 and 2014 were as follows:

In 2016, the net cash flows from operating activities of £18,005m resulted from the increase in trading balances, increased customer lending and customer savings
and deposits from other banks. In 2016, the net cash flows from investing activities of £7,340m principally reflected the purchase of held-to-maturity investments. In 2016, the net cash flows from financing activities of £6,388m
principally reflected the repayment of debt securities maturing in the year of £11,352m offset by new issues of debt securities of £5,547m, the payment of interim dividends on ordinary shares and other equity instruments and
non-controlling interests of £559m. In 2015 cash and cash equivalents increased by £4,277m principally from the increase in cash held at central banks and also debt securities, both of which are held as part of the liquidity pool. This
has increased due to an increase in wholesale funding with a maturity of less than 30 days.

In 2015, the net cash flows from operating activities of £3,897m
resulted from the increase in trading balances, increased customer lending partially offset by an increase in customer savings and deposits from other banks. In 2015, the net cash flows from investing activities of £518m principally reflected
the purchase and sale of available-for-sale securities, purchase of property, plant and equipment and the acquisition of PSA Finance UK Limited. In 2015, the net cash flows from financing activities of £2,914m principally reflected the
repayment of debt securities maturing in the year of £16,098m offset by new issues of debt securities of £13,267m, the issuance of £750m Perpetual Capital Securities and the payment of interim dividends on ordinary shares and other
equity instruments of £701m. In 2015, cash and cash equivalents decreased by £7,329m principally from the decrease in cash held at central banks and also debt securities both of which are held as part of the liquidity pool. This has
decreased due to a reduction in wholesale funding with a maturity of less than 30 days.

In 2014, the net cash flows from operating activities of £5,533m
resulted from lower trading balances and higher customer lending partly offset by higher customer savings and deposits from other banks. In 2014, the net cash flows from investing activities of £4,145m mainly reflected purchases and sales of
available-for-sale securities. In 2014, the net cash flows from financing activities of £361m reflected repayments of debt securities that matured of £20,310m offset by new issues of debt securities of £19,936m and the issuance of
£800m Perpetual Capital Securities. We also paid interim dividends of £447m on ordinary shares and £40m of dividends on other equity instruments. In 2014, cash and cash equivalents decreased by £10,039m mainly from the
increase in customer lending and purchase of available-for-sale securities.





Santander UK plc31



---

##### Table of Contents



Annual Report 2016

Risk review









Risk review

This Risk review consists of audited
financial information except where it is marked as unaudited. The audited financial information is an integral part of the Consolidated Financial Statements.



33

Risk governance33

Introduction (unaudited)33

Risk Framework40

Risk Appetite (unaudited)41

Stress testing (unaudited)42

How risk is distributed across our business (unaudited)43

Credit risk44

Santander UK group level54

Retail Banking66

Other segments81

Market risk83

Trading market risk87

Banking market risk90

Liquidity risk106

Capital risk110

Pension risk (unaudited)114

Conduct risk (unaudited)118

Other key risks and areas of focus119

Strategic risk (unaudited)120

Operational risk (unaudited)123

Financial crime risk (unaudited)125

Model risk (unaudited)125

Reputational risk (unaudited)126

Regulatory risk (unaudited)127

Country risk exposures






32Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Risk governance



INTRODUCTION(unaudited)

As a financial services provider,
managing risk is a core part of our day-to-day activities. To be able to manage our business effectively, it is critical that we understand and control risk in everything we do. We aim to use a prudent approach and advanced risk management
techniques to help us deliver robust financial performance and build sustainable value for our stakeholders.

We aim to keep a predictable medium-low risk profile,
consistent with our business model. This is key to achieving our strategic objectives.

As set out in Note 2 to the Consolidated Financial Statements, in the fourth
quarter of 2016, certain customers were transferred between our Retail Banking and Commercial Banking business segments, in line with how we now manage our customers. Small business customers with turnover up to £6.5m per annum
(previously up to £250,000) are now served as business banking customers in Retail Banking. The balances transferred from Commercial Banking to Retail Banking were £2.2bn in customer loans and £3.2bn in customer deposits at
31 December 2016 (2015: £2.3bn and £3.0bn, respectively). Medium and large business customers with annual turnover between £6.5m and £500m will continue to be served by Commercial Banking and those with annual turnover
above £500m by Global Corporate Banking. The segmental analyses for Retail Banking and Commercial Banking in this Risk review have been adjusted to reflect these changes for prior years.

RISK FRAMEWORK

Key elements(unaudited)

Our Risk Framework sets out how we manage and control risk. It is based on the following key elements which we describe in more detail in the next pages:



|                                                 |  |                                                                                                                                                                   
|------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Section                                          |  | Content                                                                                                                                                           
|How we define risk                               |  | We describe each of our key risk types.                                                                                                                           
|How we approach risk  ourculture and principles |  | We describe our risk culture and explain how we make it a day-to-day reality across the business.                                                                 
|Our risk governance structure                    |  | We describe how we consider risk in all our business decisions as part of our organisational structure, and the responsibilities of our people and our committees.
|Our
internal control system                      |  | We describe our internal
control system and how it helps us manage and control risk.                                                                              

During the year we made no significant changes to our Risk Framework, but we made the following refinements:

| | We referenced the appointment of the Chief Legal and Regulatory Officer (CLRO) who has overall responsibility for the control and oversight of legal, conduct, regulatory and financial crime risk. The CLRO replaced and
consolidated the previous roles of General Counsel and Chief Administrative Office (GC&CAO) and Chief Conduct and Compliance Officer (CCCO).
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | We renamed the Executive Risk Committee as the Executive Risk Control Committee, which better reflected the control function it carries out.
|- | --------------------------------------------------------------------------------------------------------------------------------------------

| | We included the Credit Approval Committee and the Investment Approval Committee as Executive Committees, reflecting the greater importance we placed on their functions.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------





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##### Table of Contents



Annual Report 2016

Risk review









How we define risk(unaudited)

Risk is any uncertainty about us being able to achieve our business objectives. It can be split
into a set of key risk types, each of which could affect our results and our financial resources. Our key risk types are:



|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  |                                                                                                                                                                                                                          
|--------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                | 
|Key risk types  |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                | 
|Credit          |  | The risk of loss due to the default or credit
quality deterioration of a customer or counterparty to which we have provided credit, or for which we have assumed a financial obligation.                                                                                                                                                                                                                                                                                
|                | 
|Market          |  | Trading market risk  the risk of losses in
on and off-balance sheet trading positions, due to movements in market prices or other external factors. 
Banking market risk  the risk of loss of income or economic value due to changes to interest rates in the banking book or to changes in exchange rates, where such
changes would affect our net worth through an adjustment to revenues, assets, liabilities and off-balance sheet exposures in the banking book.
|                | 
|Liquidity       |  | The risk that we do not have sufficient liquid financial resources available to
meet our obligations as they fall due, or we can only secure such resources at excessive cost.  It
is split into three types of risk:                                                                                                                                                                                                                                                   
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Funding or structural liquidity risk  the risk that we may not have sufficient liquid assets to meet the payments required at a given time due to maturity transformation.                                              
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Contingent liquidity risk  the risk that future events may require a larger than expected amount of liquidity i.e. the risk of not having sufficient liquid assets to meet sudden and unexpected short-term obligations.
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Market liquidity risk  the risk that assets we hold to mitigate the risk of failing to meet our
obligations as they fall due, which are normally liquid, become illiquid when they are needed.                          
|                | 
|Capital         |  | The risk that we do not have an adequate amount
or quality of capital to meet our internal business objectives, regulatory requirements, market expectations and dividend payments, including AT1 coupons.                                                                                                                                                                                                                                                              
|                | 
|Pension         |  | The risk caused by our contractual or other
liabilities with respect to a pension scheme (whether established for our employees or those of a related company or otherwise). It also refers to the risk that we will need to make payments or other contributions with respect to a pension scheme
due to a moral obligation or for some other reason.                                                                                                                  
|                | 
|Conduct         |  | Conduct risk is the risk that our decisions and
behaviours lead to a detriment or poor outcomes for our customers and that we fail to maintain high standards of market behaviour and integrity.                                                                                                                                                                                                                                                                        
|                | 
|Other key risks |  | Strategic risk  the risk of significant loss or damage arising from
strategic decisions that impact the long-term interests of our key stakeholders or from an inability to adapt to external developments. 
Operational risk  the risk of direct, or indirect, loss due to inadequate or failed internal processes, people and systems, or external events. Our top three key
operational risks are:                                                                 
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Cyber risk                                                                                                                                                                                                               
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Third party supplier management                                                                                                                                                                                          
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Process and change management.                                                                                                                                                                                           
|                | 
|                |  | Financial crime risk  the risk that our employees, products, services or third parties facilitate money laundering, financing terrorism, bribery and
corruption or evasion of financial sanctions.                                                                                                                                                                                                                                                                     
|                | 
|                |  | Model risk  the risk of loss arising from decisions mainly based on results of models, due to errors in their design, application or use.                                                                                                                                                                                                                                                                                                                              
|                | 
|                |  | Reputational risk  the risk of damage to the way our reputation and brand are perceived by the public, clients, government, colleagues, investors or any
other interested party.                                                                                                                                                                                                                                                                                       
|                | 
|                |  | Regulatory risk  the risk of loss, financial or reputational, from failing
to comply with applicable codes and regulations.                                                                                                                                                                                                                                                                                                                                            

Enterprise wide risk is the aggregate view of all the key risk types described above.





34Santander UK plc



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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





How we approach risk  our culture and principles(unaudited)

The complexity and
importance of the financial services industry demands a strong risk culture. We have extensive systems, controls and safeguards in place to manage and control the risks we face, but it is also crucial that everyone takes personal responsibility for
managing risk. Our risk culture plays a key role in our aim to be the best bank for our people, customers, shareholders and communities. It is vital that everyone in our business understands that, to achieve this, our people have a strong, shared
understanding of what risk is, and what their role is in helping to control it. We express this in our Risk Culture Statement:



|                                                                                                                                                                                                                                                                                                                                                                                                     
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                                                                                     
|Risk Culture Statement                                                                                                                                                                                                                                                                                                                                                                               
|Santander UK will only take risks that it understands and will always remain prudent in identifying, assessing, managing and reporting all risks. We proactively
encourage our people to take personal responsibility for doing the right thing and to challenge without fear. We ensure decisions take account of the best interests of all our stakeholders and are in line with The Santander Way.

The Board reviews and approves our Risk Culture Statement every year. The CEO, Chief Risk Officer (CRO) and other senior executives are
responsible for promoting our risk culture from the top. They drive cultural change and increased accountability across the business. We reinforce our Risk Culture Statement and embed our risk culture in all our business units through our Risk
Framework, Risk Attestations and other initiatives. This includes highlighting that:

| | It is everyones personal responsibility to play their part in managing risk
|- | ----------------------------------------------------------------------------

| | We must identify, assess, manage and report risk quickly and accurately
|- | -----------------------------------------------------------------------

| | We make risk part of how we assess our peoples performance and how we recruit, develop and reward them
|- | -------------------------------------------------------------------------------------------------------

| | Our internal control system is essential to make sure we manage and control risk in line with our principles, standards, Risk Appetite and policies.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------

We use Risk Attestations to confirm how we manage and control risks in line with our Risk Framework and within our Risk Appetite. As an example, every year, each member
of our Executive Committee confirms in writing that they have managed risk in line with the Risk Framework in the part of the business for which they are responsible. Their attestation lists any exceptions and the agreed actions taken to correct
them. This is a very tangible sign of the personal accountability that is such a key part of our risk culture.

Making change happen: I AM Risk 
everyones personal responsibility for managing risk

I AM Risk continues to play a key part in our aim to be the best bank for our people, customers,
shareholders and communities. Our I AM Risk approach aims to make sure our people:

| | Identify risks and opportunities
|- | --------------------------------

| | Assess their probability and impact
|- | -----------------------------------

| | Manage the risks and suggest alternatives
|- | -----------------------------------------

| | Report, challenge, review, learn and speak up.
|- | ------------------------------------------------

We use I AM Risk in our risk attestations, policies,
frameworks and governance, and in all our risk-related communications. We also include it in mandatory training and induction courses for our staff, in our codes of conduct and in rewards and incentives. We embed the behaviours we want to encourage
in key processes and documents.

Among other things, I AM Risk is how we make risk management part of everyones life as a Santander employee, from how we
recruit them and manage their performance to how we develop and reward them. It is also how we encourage people to take personal responsibility for risk, speak up and come up with ideas that help us change. To support this, our I AM Risk learning
website includes short films, factsheets and discussion boards.

As part of I AM Risk, we include mandatory risk objectives for all our people  from our
Executive Risk Control Committee to branch staff. The Santander Way Steering Committee coordinates all our culture initiatives under the sponsorship of the CEO.

In
2016, we made good progress with continuing to embed personal accountability for managing risk across the business. For all new and existing employees, we enhanced our mandatory risk training and we ensured that the updated performance management
risk objectives were used across the business. In our most recent employment engagement survey, 97% of employees acknowledged their personal responsibility for risk management, helping to show how we are successfully embedding risk management in our
culture.



LOGO





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##### Table of Contents



Annual Report 2016

Risk review









Our risk governance structure

We are committed to the
highest standards of corporate governance in every part of our business. This includes risk management. For details of our governance, including the Board and its Committees, see the Governance section of this Annual Report.

The Board delegates certain responsibilities to Board level Committees as needed and where appropriate. Our risk governance structure strengthens our ability to
identify, assess, manage and report risks, as follows:

| | Committees: A number of Board and Executive committees are responsible for specific parts of our Risk Framework
|- | ---------------------------------------------------------------------------------------------------------------

| | Roles with risk management responsibilities: There are senior roles with specific responsibilities for risk
|- | -----------------------------------------------------------------------------------------------------------

| | Risk organisational structure: We have three lines of defence built in to the way we run our business.
|- | --------------------------------------------------------------------------------------------------------

Committees

The Board and the Board Risk Committee responsibilities for risk
are:



|                      |  |                            |  |                                                                                    
|--------------------- |  | -------------------------- |  | -----------------------------------------------------------------------------------
|                      | 
|Board/Board Committee |  | Main risk responsibilities
|                      |  |                           
|The Board             |  |                           |  | Has overall responsibility for business execution and for managing risk            
|                      |  |                           
|                      |  |                           |  | Reviews and approves the Risk Framework and Risk
Appetite.                         
|                      |  |                           
|Board Risk Committee  |  |                           |  | Assesses the Risk Framework and recommends it to the Board for approval            
|                      |  |                           
|                      |  |                           |  | Advises the Board on our overall Risk Appetite, tolerance and strategy             
|                      |  |                           
|                      |  |                           |  | Oversees our exposure to risk and our future strategy and advises the Board on both
|                      |  |                           
|                      |  |                           |  | Reviews the effectiveness of our risk management systems and internal controls.    

The Executive level Committee
responsibilities for risk are:



|                                        |  |                            |  |                                                                                                                                                                          
|--------------------------------------- |  | -------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                        | 
|Executive Committees                    |  | Main risk responsibilities
|                                        |  |                           
|Executive Committee                     |  |                           |  | Reviews and approves business plans in line with our Risk Framework and Risk Appetite before they are sent to the Board to approve                                       
|                                        |  |                           
|                                        |  |                           |  | Receives updates on key risk issues managed by CEO-level
committees and monitors the actions taken.                                                                      
|                                        |  |                           
|Executive Risk Control                  |  |                           |  | Reviews Risk Appetite proposals before they are sent to the Board Risk Committee and the Board to approve                                                                
|Committee                               |  |                           |  | Ensures that we comply with our Risk Framework, Risk Appetite and risk
policies                                                                                          
|                                        |  |                           
|                                        |  |                           |  | Reviews and monitors our risk exposures and approves any corrective steps we need to take.                                                                               
|                                        |  |                           
|Asset and Liability                     |  |                           |  | Reviews liquidity risk appetite proposals before they are sent to the Board to approve                                                                                   
|Committee (ALCO)                        |  |                           |  | Ensures we measure and
control structural balance sheet risks, including capital, funding and liquidity, in line with the policies, strategies and plans set by the Board
|                                        |  |                           
|                                        |  |                           |  | Reviews and monitors the key asset and liability management
activities of the business to ensure we keep our exposure in line with our Risk Appetite.                    
|                                        |  |                           
|Pensions Committee                      |  |                           |  | Reviews pension risk appetite proposals before they are sent to the Board to approve                                                                                     
|                                        |  |                           |  | Approves actuarial valuations and reviews the impact they may have on our
contributions, capital and funding                                                             
|                                        |  |                           
|                                        |  |                           |  | Consults with the pension scheme trustees on the schemes investment strategy.                                                                                           
|                                        |  |                           
|Capital Committee                       |  |                           |  | Puts in place effective risk control processes, reporting systems and processes to make sure capital risks are managed within our Risk Framework                         
|                                        |  |                           
|                                        |  |                           |  | Reviews capital adequacy and capital plans, including the
Internal Capital Adequacy Assessment Process (ICAAP), before they are sent to the Board to approve.            
|                                        |  |                           
|Executive Credit Approval Committee     |  |                           |  | Approves corporate and wholesale credit transactions which exceed levels delegated to either lower level
approval forums or individuals.                                 
|                                        |  |                           
|Executive Investment Approval Committee |  |                           |  | Approves equity type investment transactions which exceed levels delegated to lower level
approval forums or individuals.                                                





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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Roles with risk management responsibilities

Chief Executive Officer

The Board delegates responsibility for our business
activities and managing risk on a day-to-day basis to the CEO. The key responsibilities of the CEO are to:

| | Propose our strategy and business plan, put them into practice and manage the risks involved
|- | --------------------------------------------------------------------------------------------

| | Ensure we have a suitable system of controls to manage risk and report to the Board on it
|- | -----------------------------------------------------------------------------------------

| | Foster a culture that promotes ethical practices and social responsibility
|- | --------------------------------------------------------------------------

| | Ensure all our staff know about the policies and corporate values approved by the Board.
|- | ----------------------------------------------------------------------------------------

Chief Risk Officer

As the leader of the Risk Division, the CRO oversees and challenges risk activities, and ensures new lending decisions are made within our Risk Appetite. The CRO reports
to the Board through the Board Risk Committee, and also reports to the CEO for operational purposes. The CRO also reports directly to the global CRO for the Banco Santander group. The key responsibilities of the CRO are to:

| | Propose a Risk Framework to the Board (through the Board Risk Committee) that sets out how we manage the risks from our business activities within the approved Risk Appetite
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Advise the CEO, the Board Risk Committee and Board on the Risk Appetite linked to our strategic business plan and why it is appropriate
|- | ---------------------------------------------------------------------------------------------------------------------------------------

| | Reassure the Board and our regulators that we identify, assess and measure risk and that our systems, controls and delegated authorities to manage risk are adequate and effective
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Advise the CEO, Board Risk Committee, the Board and our regulators on how we manage key risks and escalate any issues or breaches of Risk Appetite
|- | --------------------------------------------------------------------------------------------------------------------------------------------------

| | Ensure that our culture promotes ethical practices and social responsibility
|- | ----------------------------------------------------------------------------

| | Ensure that our policies and corporate values approved by the Board are communicated so that our culture, values and ethics are aligned to our strategic objectives
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Ensure an appropriate governance structure is in place to make effective credit decisions.
|- | ------------------------------------------------------------------------------------------

The CRO is responsible for
the control and oversight of all risks except for legal, conduct, regulatory and financial crime risk. These are the responsibilities of the Chief Legal and Regulatory Officer (CLRO). The CRO has responsibility for reporting risk matters through the
Board Risk Committee to the Board. The CLRO reports to the Board Risk Committee and the Board specifically in respect of legal, conduct, regulatory and financial crime risk.

Chief Legal and Regulatory Officer

The CLRO is responsible for the control and
oversight of legal, conduct, regulatory and financial crime risk. The key responsibilities of the CLRO are to:

| | Propose a Risk Framework for conduct, regulatory and financial crime risk to the Board (through the Board Risk Committee and the CRO) that sets out how we manage these risks in line with our Risk Appetite
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Advise the CRO, CEO, the Board Risk Committee and the Board on the Risk Appetite for legal, conduct, regulatory and financial crime risk, linked to our strategic business plan and why it is approved
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Reassure the CRO, the Board and our regulators that we identify, assess and measure conduct, regulatory and financial crime risk appropriately and that our systems, controls and delegated authorities to manage risk are
adequate and effective
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Advise the CRO, CEO, Board Risk Committee, Board and regulators on how we manage key legal, conduct, regulatory and financial crime risks and escalate any issues or breaches of Risk Appetite
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Ensure that our culture promotes ethical practices and social responsibility and contributes to the management of reputational risk
|- | -----------------------------------------------------------------------------------------------------------------------------------

| | Ensure that our policies and corporate values approved by the Board are communicated so that our culture, values and ethics are aligned to our strategic objectives.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------

Chief Internal Auditor

The Chief Internal Auditor (CIA) reports to the Board
through the Board Audit Committee, and also reports to the CEO for operational purposes. The CIA also reports directly to the CIA of Banco Santander SA. The key responsibilities of the CIA are to:

| | Ensure the scope of Internal Audit includes each main activity and entity
|- | -------------------------------------------------------------------------

| | Design and use an audit system that identifies key risks and evaluates controls
|- | -------------------------------------------------------------------------------

| | Develop an audit plan to assess existing risks that involves producing audit, assurance and monitoring reports
|- | --------------------------------------------------------------------------------------------------------------

| | Carry out all audits, special reviews, reports and commissions that the Board Audit Committee asks for
|- | ------------------------------------------------------------------------------------------------------

| | Monitor business activities regularly by consulting with internal control teams and our External Auditors
|- | ---------------------------------------------------------------------------------------------------------

| | Develop and run internal auditor training that includes regular skills assessments.
|- | -----------------------------------------------------------------------------------





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##### Table of Contents



Annual Report 2016

Risk review









Risk organisational structure(unaudited)

We use the three lines of defence model to manage risk. This model is widely used in the banking industry and has a clear set of principles to implement a
cohesive operating model across an organisation. It does this by separating risk management, risk control and risk assurance.

The diagram below shows the reporting
lines to the Board with respect to risk:



LOGO





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Internal control system(unaudited)

Our Risk Framework is
an overarching view of our internal control system that helps us manage risk across the business. It sets out at a high level the principles, minimum standards, roles and responsibilities, and governance for internal control.



LOGO



|                                 |  |                                                                                                                                                                                                                                                                                                      
|-------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                 | 
|Category                         |  | Description                                                                                                                                                                                                                                                                                          
|                                 | 
|Risk Frameworks                  |  | Set out how we should manage and control risk for:                                                                                                                                                                                                                                                   
|                                 | 
|                                 |  |    The Santander UK group (overall
framework)                                                                                                                                                                                                                                                       
|                                 | 
|                                 |  |    Our key risk types (risk type
frameworks)                                                                                                                                                                                                                                                        
|                                 | 
|                                 |  | 
  Our key risk activities (risk activity frameworks).                                                                                                                                                                                                                                              
|                                 | 
|Risk Management
Responsibilities |  | Set out the Line 1 risk management responsibilities for Business Units and Business Support Units.                                                                                                                                                                                                   
|                                 | 
|Risk Appetite Statement          |  | Defines the type and the level of risk that we are willing and able to take on to achieve our business plans. The policies set out what action we must (or must not) take to
make sure we stay within our Risk Appetite.                                                                             
|                                 | 
|                                 |  | Risk Control Units set overarching policies. Business and
Business Support Units have operational policies, standards and procedures that put these policies into practice. We expect all our people to manage risk within their own work by complying with these policies, standards and procedures.
|                                 | 
|Delegated
Authorities/Mandates   |  | Define who can do what under the authority delegated to the CEO by the Board.                                                                                                                                                                                                                        
|                                 | 
|Risk Attestations                |  | Business Units, Business Support Units or Risk Control Units set out how they have managed and/or controlled risks in line with the risk frameworks and within Risk
Appetite.                                                                                                                        
|                                 | 
|                                 |  | They are completed at least once a year. They also explain any action taken. This process
helps ensure people can be held personally accountable.                                                                                                                                                    





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##### Table of Contents



Annual Report 2016

Risk review









RISK APPETITE(unaudited)

How we control the risks we are prepared to take

When our Board sets our strategic objectives, it is important that we are clear about the risks we are prepared to take to achieve them. We express this through our Risk
Appetite Statement, which defines the amount and kind of risk we are willing to take. Our Risk Appetite and strategy are closely linked  our strategy must be achievable within the limits set out in our Risk Appetite.

The principles of our Risk Appetite

Our Risk Appetite
Statement lists ten principles that we use to set our Risk Appetite.

| | We always aim to have enough financial resources to survive severe but plausible stressed economic and business conditions, as well as more extreme conditions that would consume capital
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | We should be able to predict how our income and losses might vary  that is, how volatile they are. That applies to all our risks and lines of business
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------

| | Our earnings and dividend payments should be stable, and in line with the return we aim to achieve
|- | --------------------------------------------------------------------------------------------------

| | We are an autonomous business, so we always aim to have strong capital and liquidity resources
|- | ----------------------------------------------------------------------------------------------

| | The way we fund our business should give us diverse sources and duration of funding. This helps us to avoid relying too much on wholesale markets
|- | -------------------------------------------------------------------------------------------------------------------------------------------------

| | We set controls on large concentrations of risk, such as to single customers or specific industries
|- | ---------------------------------------------------------------------------------------------------

| | There are some key risks we take, but for which we do not actively seek any reward, such as operational, conduct, financial crime, regulatory and reputational risk. We take a risk-averse approach to all such risks
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | We comply with all regulations  and aim to exceed the standards they set
|- | -------------------------------------------------------------------------

| | Our pay and bonus schemes should support these principles and our risk culture
|- | ------------------------------------------------------------------------------

| | We always aim to earn the trust of our people, customers, shareholders and communities.
|- | ---------------------------------------------------------------------------------------

How we
describe the limits in our Risk Appetite

Our Risk Appetite sets out detailed limits for different types of risk, using metrics and qualitative statements.

Metrics

We use metrics to set limits on losses, capital and liquidity.
We set:

| | Limits for losses for our most important risks, including credit, market, operational and conduct risk
|- | ------------------------------------------------------------------------------------------------------

| | Capital limits, reflecting both the capital that regulators expect us to hold (regulatory capital) and our own internal measure (economic capital)
|- | --------------------------------------------------------------------------------------------------------------------------------------------------

| | Liquidity limits according to the most plausible stress scenario for our business.
|- | ----------------------------------------------------------------------------------

These limits apply in normal business
conditions, but also when we might be experiencing a far more difficult trading environment. A good example of this might be when the UK economy is performing much worse than we expected. We refer to conditions such as this as being under stress.

There is more on economic capital and stress scenarios later in this section.

Qualitative statements

For some risks we also use qualitative statements that
describe in words the controls we want to set. For example, in conduct risk, we use them to describe our Risk Appetite for products, sales, after-sales service, and culture. We also use them to exclude or restrict risks from some sectors, types of
customer and activities.

How we set our Risk Appetite, and stay within it

We control our Risk Appetite through our Risk Appetite Framework. Our Board approves and oversees the Risk Appetite Statement every year. This ensures it is consistent
with our strategy and reflects the markets in which we operate. Our Executive Committee is responsible for ensuring that our risk profile (the level of risk we are prepared to accept) is consistent with our Risk Appetite Statement. To do this they
monitor our performance, business plans and budgets each month. At least every six months, we use stress testing to review how our business plan performs against our Risk Appetite Statement. This shows us if we would stay within our Risk Appetite
under stress conditions. It also helps us to identify any adverse trends or inconsistencies.

We embed our Risk Appetite by setting more detailed risk limits for
each business unit and key portfolio. These are set in a way so that if we stay within each detailed limit, we will stay within our overall Risk Appetite. When we use qualitative statements to describe our appetite for a risk, we link them to
lower-level key risk indicators, so that we can monitor and report our performance against them.

We provide a programme of communication and training for our staff
which helps ensure that Risk Appetite is well understood.





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





STRESS TESTING(unaudited)

Stress testing helps us understand
how different events and economic conditions could affect our business plan, earnings and risk profile. This helps us plan and manage our business better.

Scenarios for stress testing

To see how we might cope with difficult conditions, we regularly develop challenging scenarios that we might
face. We consult a broad range of internal stakeholders, including Board members, when we design and choose our most important scenarios. The scenarios cover a wide range of outcomes, risk factors, time horizons and market conditions. They are
designed to test:

| | The impact of shocks affecting the economy as a whole or the markets we operate in
|- | ----------------------------------------------------------------------------------

| | Key potential vulnerabilities of our business model
|- | ---------------------------------------------------

| | Potential impacts on specific risk types.
|- | -----------------------------------------

We describe each scenario using a narrative setting out how events might
unfold, as well as a market and/or economic context. For example the key economic factors we reflect in our ICAAP scenarios include house prices, interest rates, unemployment levels and the size of the UK economy. One scenario looks at what might
happen in a recession where the output of the economy shrinks by around 4%, unemployment reaches over 9%, and house prices fall by around 30%. We use a comprehensive suite of stress scenarios to explore sensitivities to market risk, including those
based on historic market events.

How we use stress testing

We use stress testing to estimate the effect of these scenarios on our business and financial performance, including:

| | Our business plan, and its assessment against our Risk Appetite
|- | ---------------------------------------------------------------

| | Our capital strength, through our ICAAP
|- | ---------------------------------------

| | Our liquidity position, through our Internal Liquidity Adequacy Assessment Process (ILAAP)
|- | ------------------------------------------------------------------------------------------

| | Impacts on other risk types.
|- | ----------------------------

We use a wide range of models, approaches and assumptions. These help us
interpret the links between factors in markets and the economy, and our financial performance. For example, one model looks at how changes in unemployment rates might affect the number of customers who might fall into arrears on their mortgage.

Our stress testing models are subject to a formal review, independent validation and approval process. We highlight the key weaknesses and related model assumptions in
the approval process for each stress test. In some cases, we overlay expert judgement onto the results of our models. Where this is material to the outcome of the stress test, the approving governance committee reviews it.

We take a multi-layered approach to stress testing to capture risks at various levels. This ranges from sensitivity analyses of a single factor to a portfolio, to wider
exercises that cover all risks across our entire business. We use stress testing outputs to design action plans that aim to mitigate damaging effects.

We also
conduct reverse stress tests. These are tests in which we identify and assess scenarios that are most likely to cause our business model to fail.

Board oversight of stress testing

The Executive Risk Control Committee approves the design of the scenarios in our ICAAP. The Board Risk
Committee approves the stress testing framework. The Board reviews the outputs of stress testing as part of the approval processes for the ICAAP, the ILAAP, our Risk Appetite and regulatory stress tests.

Regulatory stress tests

We take part in a number of
external stress testing exercises. These can include stress tests of the UK banking system conducted by the PRA. We also contribute to stress tests of Banco Santander.

For more on capital and liquidity stress testing, see the Capital risk and Liquidity risk sections.





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##### Table of Contents



Annual Report 2016

Risk review









HOW RISK IS DISTRIBUTED ACROSS OUR BUSINESS(unaudited)

Economic capital

As well as assessing how much regulatory capital we are required to hold, we use an internal Economic Capital (EC) model to measure our risk.

We use EC to get a consistent measure across different risk types. EC also takes account of how concentrated our portfolios are, and how much diversification there is
between our various businesses.

As a consequence we can use EC for a range of risk management activities. For example, we can use it to help us compare requirements
in our ICAAP or to get a risk-adjusted comparison of income from different activities.

Regulatory capital  risk-weighted assets

The table below shows the proportion of our regulatory capital risk-weighted assets we held in different parts of our business at 31 December 2016 and
2015. It is split between credit, market and operational risk against which we hold regulatory capital.



LOGO

2016 compared to 2015

The
distribution of risk across our business was broadly unchanged in the year. The largest category continued to be credit risk in Retail Banking, which accounted for most of our risk-weighted assets. This reflects our business strategy and balance
sheet. Market risk arises primarily as part of our trading book activities in Global Corporate Banking. Our operational risk capital requirements remained small, and were concentrated in our Retail Banking activities.

For more on this, see Risk-weighted assets in the Capital risk section.





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks







Credit risk  Overview(unaudited)  Credit risk is the risk of loss due to the
default or credit quality deterioration of a customer or counterparty to which we have provided credit, or for which we have assumed a financial obligation.In this section, we explain how we manage credit risk and analyse our credit risk profile and performance.We begin by discussing credit risk at a Santander UK group level. Then we cover Retail Banking separately from our other segments: Commercial Banking, Global Corporate Banking and Corporate Centre, in more detail
in the sections that follow. For details of the businesses in each of our segments, see Note 2 to the Consolidated Financial Statements.Key metrics(unaudited)NPL ratio improved to 1.50% (2015: 1.54%)In 2016 the NPL ratio improved to 1.50%, with all loan books performing well.Impairment loss allowances decreased to £989m (2015: £1,157m)Impairment loss allowances decreased in 2016 and all loan portfolios continued to perform well.Average LTV of 65% (2015: 65%) on new mortgage lendingWe maintained our prudent lending criteria, with an average LTV of 65% on new lending. Our lending with an LTV of over 85% accounted for 17% of new business flow.NPL coverage ratio decreased to 33% (2015: 38%)The NPL coverage ratio decreased to 33% in 2016, from 38% in 2015.






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##### Table of Contents



Annual Report 2016

Risk review









Credit risk  Santander UK group level



| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |  |  |                                                                                                                                                                                                                                |  |  |  | 
| |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  |  |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |  |  |                                                                                                                                                                                                                                |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |  | 
| |  | Overview                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |  |  |  |                                                                                                                                                                                                                                |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |  | 
| |  | Credit risk management In this section, we
set out our products and services that expose us to credit risk, and we explain how we manage credit risk depending on the type of customer. 
We also set out our approach to credit risk across the credit risk lifecycle. This includes risk strategy and planning, assessment and origination, monitoring, arrears
management (including forbearance), and debt recovery.  We also explain how we measure and control
risk, including the key metrics we use. |  |  |  | Credit risk review In this section, we
analyse our maximum and net exposures to credit risk, including their credit quality and concentrations of risk. 
We also summarise our credit performance, and forbearance activities. |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |  |  |                                                                                                                                                                                                                                |  |  |  | 

SANTANDER UK GROUP LEVEL  CREDIT RISK MANAGEMENT

Exposures

Exposures to credit risk arise in our business
segments from:



|                                                                                                                                                                                            |  |                                                                                                                                                                                                                            |  |                                                                                                                                                                                           |  |                                                                                                                                                                                                                      
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                            |  |                                                                                                                                                                                                                            | 
|Retail Banking                                                                                                                                                                              |  | Commercial Banking                                                                                                                                                                                                         |  | Global Corporate Banking                                                                                                                                                                  |  | Corporate Centre                                                                                                                                                                                                     
|  Residential mortgages, unsecured lending (overdrafts, personal loans, credit cards
and business banking) and consumer finance.    We provide these to individuals and small businesses. |  |   Loans, bank accounts, treasury services, invoice discounting, cash transmission, trade finance and asset finance. 
  We provide these to SMEs and mid corporates, Commercial Real Estate and Social
Housing customers. |  |   Loans and treasury products, and from treasury markets activities. 
  We provide these to large corporates, financial institutions, sovereigns and other
international organisations. |  |   Asset and liability management of our balance sheet, as well as our non-core
and Legacy Portfolios being run down.    Exposures include sovereign and other international organisation assets held for liquidity.

Our types of customer and how we manage them

We manage credit risk across all our business segments in line with the credit risk lifecycle shown in the next section. We tailor the way we manage risk across the
lifecycle to the type of customer. We classify customers as standardised or non-standardised:



|                                                                                                                                              |  |                                                                                                                                                                       
|--------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                              | 
|Standardised                                                                                                                                  |  | Non-standardised                                                                                                                                                      
|  Mainly individuals and small businesses. Transactions are for relatively small
amounts of money, and share similar credit characteristics. |  |   Mainly medium and large corporate customers and financial institutions.
Transactions are for larger amounts of money, and have more diverse credit characteristics.
|  In Retail Banking, Commercial Banking and Corporate Centre (for non-core
portfolios).                                                      |  |   In Commercial Banking, Global Corporate Banking and Corporate Centre.                                                                                              
|  We manage risk using automated decision-making tools. These are backed by teams of
analysts who specialise in this type of risk.           |  |   We manage risk through expert analysis. This is supported by decision-making tools
based on internal risk assessment models.                                       





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Our approach to credit risk



LOGO

We manage our portfolios across the credit risk lifecycle, from drawing up our risk strategy, plans, budgets and limits to making sure
our actual risk profile stays in line with our plans and within our Risk Appetite.

1. Risk strategy and planning

All relevant areas of the business  Risk, Marketing, Products and Finance  work together to create our business plans. Our aim is to balance our strategy,
business goals, and financial and technical resources with our attitude towards risk (our Risk Appetite). To do this, we focus particularly on economic and market conditions and forecasts, regulations, conduct considerations and profitability,
returns and market share. The result is an agreed set of targets and limits that help us direct our business.

2. Assessment and origination

Managing credit risk begins with lending responsibly. That means only lending to customers who can afford to pay us back, even if things get tighter for
them, and are committed to paying us back. We undertake a thorough risk assessment to make sure customers can meet their obligations before we approve a credit application. We make these decisions with authority from the Board and we consider:

| | The credit quality of the customer
|- | ----------------------------------

| | The underlying risk  and anything that mitigates it, such as netting or collateral
|- | -----------------------------------------------------------------------------------

| | Our risk policy, limits and appetite
|- | ------------------------------------

| | Whether we can balance the amount of risk we face with the returns we could get.
|- | --------------------------------------------------------------------------------

We also use stress testing, for example
to estimate how a customer might be able to cope if interest rates increase.

3. Monitoring

We measure and monitor changes in our credit risk profile on a regular and systematic basis against budgets, limits and benchmarks. We monitor credit performance by
portfolio, segment, customer or transaction. If our portfolios do not perform as we expect, we investigate to understand the reasons. Then we take action to mitigate it as far as possible and bring performance back on track.

We monitor and review our risk profile through a formal structure of governance and committees across our business segments. These agree and track any steps we need to
take to manage our portfolios, to make sure the impact is prompt and effective. This structure is a vital feedback tool to co-ordinate issues, trends and developments across each part of the credit risk lifecycle. A core part of our monitoring is
credit concentrations, such as the proportion of our lending that goes to specific borrowers, groups or industries. We set concentration limits in line with our Risk Appetite and review them on a regular basis.

4. Arrears management

Sometimes our customers face financial difficulty and
they may fall into payment arrears or breach conditions of their credit facility. If this happens, we work with them to get their account back on track. We aim to support our customers and keep our relationship with them. We do this by:

| | Finding affordable and sustainable ways of repaying to fit their circumstances
|- | ------------------------------------------------------------------------------

| | Monitoring their finances and using models to predict how we think they will cope financially. This helps us design and put in place the right strategy to manage their debt
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Working with them to get their account back to normal as soon as possible in a way that works for them and us
|- | -------------------------------------------------------------------------------------------------------------

| | Monitoring agreements we make to manage their debt so we know they are working.
|- | -------------------------------------------------------------------------------

Forbearance

When a customer gets into financial difficulties, we can change the terms of their loan, either temporarily or permanently. We do this to help customers through temporary
periods of financial difficulty so they can get back on to sustainable terms and fully pay off the loan over its lifetime, with support if needed. This is known as forbearance. We try to do this before the customer defaults. Whatever we offer, we
assess it to make sure the customer can afford the repayments.





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Annual Report 2016

Risk review









Forbearance improves our customer relationships and our credit risk profile. It also means that we only use foreclosure or repossession as a last resort. We review our
approach regularly to make sure it is still effective. In a few cases, we can help a customer in this way more than once. This can happen if the plan to repay their debt doesnt work and we have to draw up another one. When this happens more
than once in a year, or more than three times in five years, we call it multiple forbearance.

In the first half of the year, we changed our policy on forbearance so
that customer loans that meet exit criteria will no longer be reported as forborne. In the past, we reported loans as forborne until they were fully repaid or written off. In order to exit from forbearance a loan must now:

| | Have been forborne at least two years ago or, where the forbearance was temporary, it must have returned to performing under normal contractual terms for at least two years,
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Have been performing under the forborne terms for at least two years, and
|- | -------------------------------------------------------------------------

| | Not be more than 30 days in arrears.
|- | ------------------------------------

5. Debt recovery

Sometimes, even when we have taken all reasonable and responsible steps we can to manage arrears, they prove ineffective. If this happens, we have to end our relationship
with the customer and try to recover the whole debt, or as much of it as we can.

Risk measurement and control

We measure and control credit risk at all stages across the credit risk lifecycle. We have a range of tools, processes and approaches, but we rely mainly on:

| | Credit control: as a core part of risk management we generate, extract and store accurate, comprehensive and timely data to monitor credit limits. We do this using internal data and data from third parties like
credit bureaux
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Models: we use models widely to measure credit risk and capital needs. They range from statistical and expert models to benchmarks
|- | ----------------------------------------------------------------------------------------------------------------------------------

| | Review: we use formal and informal forums across the business to approve, validate, review and challenge our risk management. We do this to help us predict if our credit risk will worsen.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We use two key metrics to measure and control credit risk: Expected Loss (EL) and Non-Performing Loans (NPLs).



|       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|------ |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|       | 
|Metric |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|       | 
|EL     |  | EL tells us what credit risk is likely to cost us. It is the product of:                                                                                                                                                                                                                                                                                                                                                                                                                     
|       |  |    Probability of default (PD)
 how likely customers are to default. We estimate this using customer ratings or the transaction credit scores                                                                                                                                                                                                                                                                                                                                              
|       |  |    Exposure at default (EAD) 
how much customers will owe us if they default. We calculate this by comparing how much of their agreed credit (such as an overdraft) customers have used when they default with how much they normally use. This allows us to estimate the final extent
of use of credit in the event of default                                                                                                                                                            
|       |  |    Loss given default (LGD) 
how much we lose when customers actually default. We work this out using the actual losses on loans that default. We take into account the income we receive, including from collateral we held, the costs we incur and the recovery process
timing.                                                                                                                                                                                                          
|       | 
|       |  | PD, EAD and LGD are calculated in accordance with CRD IV, and include direct and indirect costs. We base them on our own risk models and our assessment of each
customers credit quality. For the rest of our Risk review, impairments, impairment losses and impairment loss allowances refer to calculations in accordance with IFRS, unless we specifically say they relate to CRD IV. For our IFRS accounting
policy on impairment, see Note 1 to the Consolidated Financial Statements.
|       | 
|       |  | The way we calculate impairment under IFRS will change from 1
January 2018 when IFRS 9 takes effect. It uses an expected credit loss (ECL) model rather than an incurred loss model used by IAS 39. There are also differences between the ECL approach used by IFRS 9 and the EL approach used by CRD IV. For more,
see Future accounting developments in Note 1 to the Consolidated Financial Statements.                                                                                
|       | 
|NPLs   |  | We use NPLs  and related write-offs and recoveries  to monitor how our portfolios behave. We classify loans as NPLs where customers do not make a payment for
three months or more, or if we have data to make us doubt they can keep up with their payments. The data we have on customers varies across our business segments. It typically includes where:                                                                                                                              
|       | 
|       |  | Retail Banking                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|       |  |    They have been reported bankrupt or insolvent                                                                                                                                                                                                                                                                                                                                                                                                                                            
|       |  |    Their loan term has ended, but they still owe us money more than three months later                                                                                                                                                                                                                                                                                                                                                                                                      
|       |  |    They have had forbearance as an NPL, but have not caught up with the payments they had missed before that                                                                                                                                                                                                                                                                                                                                                                                
|       |  |    They have had multiple forbearance                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|       |  |    We have suspended their fees and interest because they are in financial difficulties                                                                                                                                                                                                                                                                                                                                                                                                     
|       |  |    We have repossessed the property.                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|       | 
|       |  | Other segments: Commercial Banking, Global Corporate Banking and Corporate Centre                                                                                                                                                                                                                                                                                                                                                                                                            
|       |  |    They have had a winding up
notice issued, or something happens that is likely to trigger insolvency  such as, another lender calls in a loan                                                                                                                                                                                                                                                                                                                                            
|       |  |    Something happens that makes
them less likely to be able to pay us  such as they lose an important client or contract                                                                                                                                                                                                                                                                                                                                                                   
|       |  |    They have regularly missed or
delayed payments, even though they have not gone over the three-month limit for NPLs                                                                                                                                                                                                                                                                                                                                                                       
|       |  |    Their loan is unlikely to be
refinanced or repaid in full on maturity                                                                                                                                                                                                                                                                                                                                                                                                                    
|       |  |    Their loan has an excessive LTV
and it is unlikely that it will be resolved, such as by a change in planning policy, pay-downs from rental income, or increases in market values.                                                                                                                                                                                                                                                                                                        

We also assess risks from other perspectives. These comprise internal rating deterioration, geographical location, business area, product
and process. We do this to identify specific areas we need to focus on. We also use stress testing to establish vulnerabilities to economic deterioration.

Our
business segments tailor their approach to credit risk to their own customers. We explain their approaches in the business segment sections later on.





46Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





SANTANDER UK GROUP LEVEL  CREDIT RISK REVIEW

Our maximum and net exposure to credit risk

The tables below show the main
differences between our maximum and net exposure to credit risk. They show the effects of collateral, netting, and risk transfer to mitigate our exposure. The tables only show the financial assets that credit risk affects.

For balance sheet assets, the maximum exposure to credit risk is the carrying value after impairment loss allowances. Off-balance sheet exposures are guarantees, formal
standby facilities, credit lines and other commitments. For off-balance sheet guarantees, the maximum exposure is the maximum amount that we would have to pay if the guarantees were called on. For formal standby facilities, credit lines and other
commitments that are irrevocable over the life of the facility, the maximum exposure is the total amount of the commitment.



|                                                                                |  |                     |                  |  |  |  |                               |            |  |  |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
|------------------------------------------------------------------------------- |  | ------------------- | ---------------- |  |  |  | ----------------------------- | ---------- |  |  | -------------- |  |  |  | -------------------- |  |  |  |  |  |  |  | -------- | --- |  |  | ------------ | ---- |  |  | ----------- | --- |  |  | --------------- | 
|                                                                                |  | Maximum exposure    |                  |  |  |  |                               | Collateral |  |  |                |  |  |  |                     
|                                                                                |  | Balance sheet asset |                  |  |  |  |                               |            |  |  |                |  |  |  |                      |  |  |  |  |  | 
|                                                                                |  |                     | Grossamounts
£bn |  |  |  | Impairmentloss allowances
£bn |            |  |  | Netamounts
£bn |  |  |  | Off-balancesheet
£bn |  |  |  |  |  |  |  | Cash £bn | (1) |  |  | Non-cash £bn | (1)  |  |  | Netting £bn | (2) |  |  | Netexposure
£bn | 
|2016                                                                            |  |                     |                  |  |  |  |                               |            |  |  |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
|Cash and balances at central banks                                              |  |                     | 17.1             |  |  |  |                              |            |  |  | 17.1           |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 17.1            | 
|Trading assets:                                                                 |  |                     |                  |  |  |  |                               |            |  |  |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
| Loans and advances to banks                                                   |  |                     | 7.5              |  |  |  |                              |            |  |  | 7.5            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  | (2.1        | )   |  |  | 5.4             | 
| Loans and advances to customers                                               |  |                     | 10.3             |  |  |  |                              |            |  |  | 10.3           |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  | (8.6         | )    |  |  |            |     |  |  | 1.7             | 
| Debt securities                                                               |  |                     | 6.2              |  |  |  |                              |            |  |  | 6.2            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 6.2             | 
|Total trading assets                                                            |  |                     | 24.0             |  |  |  |                              |            |  |  | 24.0           |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  | (8.6         | )    |  |  | (2.1        | )   |  |  | 13.3            | 
|Derivative financial instruments                                                |  |                     | 25.5             |  |  |  |                              |            |  |  | 25.5           |  |  |  |                     |  |  |  |  |  |  |  | (2.4     | )   |  |  |             |      |  |  | (17.4       | )   |  |  | 5.7             | 
|Financial assets designated at fair value:                                      |  |                     |                  |  |  |  |                               |            |  |  |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
| Loans and advances to customers                                               |  |                     | 1.7              |  |  |  |                              |            |  |  | 1.7            |  |  |  | 0.2                  |  |  |  |  |  |  |  |         |     |  |  | (1.8         | )    |  |  |            |     |  |  | 0.1             | 
| Debt securities                                                               |  |                     | 0.4              |  |  |  |                              |            |  |  | 0.4            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 0.4             | 
|Total financial assets designated at fair value                                 |  |                     | 2.1              |  |  |  |                              |            |  |  | 2.1            |  |  |  | 0.2                  |  |  |  |  |  |  |  |         |     |  |  | (1.8         | )    |  |  |            |     |  |  | 0.5             | 
|Loans and advances to banks                                                     |  |                     | 4.4              |  |  |  |                              |            |  |  | 4.4            |  |  |  | 1.9                  |  |  |  |  |  |  |  |         |     |  |  | (1.5         | )    |  |  |            |     |  |  | 4.8             | 
|Loans and advances to customers:(3)                                             |  |                     |                  |  |  |  |                               |            |  |  |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
| Advances secured on residential property                                      |  |                     | 154.7            |  |  |  | (0.3                          | )          |  |  | 154.4          |  |  |  | 10.8                 |  |  |  |  |  |  |  |         |     |  |  | (164.9       | )(4) |  |  |            |     |  |  | 0.3             | 
| Corporate loans                                                               |  |                     | 32.0             |  |  |  | (0.4                          | )          |  |  | 31.6           |  |  |  | 17.1                 |  |  |  |  |  |  |  |         |     |  |  | (23.1        | )    |  |  |            |     |  |  | 25.6            | 
| Finance leases                                                                |  |                     | 6.7              |  |  |  | (0.1                          | )          |  |  | 6.6            |  |  |  | 0.4                  |  |  |  |  |  |  |  | (0.1     | )   |  |  | (5.7         | )    |  |  |            |     |  |  | 1.2             | 
| Other unsecured loans                                                         |  |                     | 6.2              |  |  |  | (0.2                          | )          |  |  | 6.0            |  |  |  | 11.5                 |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 17.5            | 
| Amounts due from fellow Banco Santander group subsidiaries and
joint ventures |  |                     | 1.1              |  |  |  |                              |            |  |  | 1.1            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 1.1             | 
|Total loans and advances to customers                                           |  |                     | 200.7            |  |  |  | (1.0                          | )          |  |  | 199.7          |  |  |  | 39.8                 |  |  |  |  |  |  |  | (0.1     | )   |  |  | (193.7       | )    |  |  |            |     |  |  | 45.7            | 
|Loans and receivables securities(3)                                             |  |                     | 0.3              |  |  |  |                              |            |  |  | 0.3            |  |  |  | 1.6                  |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 1.9             | 
|Available-for-sale debt securities                                              |  |                     | 10.4             |  |  |  |                              |            |  |  | 10.4           |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 10.4            | 
|Held-to-maturity investments                                                    |  |                     | 6.6              |  |  |  |                              |            |  |  | 6.6            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 6.6             | 
|Total                                                                           |  |                     | 291.1            |  |  |  | (1.0                          | )          |  |  | 290.1          |  |  |  | 43.5                 |  |  |  |  |  |  |  | (2.5     | )   |  |  | (205.6       | )    |  |  | (19.5       | )   |  |  | 106.0           | 



|(1) | The forms of collateral we take to reduce credit risk include: residential and commercial property; other physical assets, including motor vehicles; liquid securities, including those transferred under reverse
repurchase agreements; cash, including cash used as collateral for derivative transactions; and receivables. Charges on residential property are most of the collateral we take.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | We can reduce credit risk exposures by applying netting. We do this mainly for derivative and repurchase transactions with financial institutions. For derivatives, we use standard master netting agreements. They allow
us to set off our credit risk exposure to a counterparty from a derivative against our obligations to the counterparty in the event of default. This gives us a lower net credit exposure. They may also reduce settlement exposure. For more on
this, see Credit risk mitigation in the Other segments  credit risk management section.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Balances include interest we have charged to the customers account and accrued interest that we have not charged to the account yet.
|--- | -------------------------------------------------------------------------------------------------------------------------------------

|(4) | The collateral value we have shown is limited to the balance of each associated individual loan. It does not include the impact of over-collateralisation (where the collateral has a higher value than the loan balance)
and includes collateral we would receive on draw down of certain off-balance sheet commitments.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc47



---

##### Table of Contents



Annual Report 2016

Risk review









|                                                                                |  |                     |  |  |                               |   |  |            |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
|------------------------------------------------------------------------------- |  | ------------------- |  |  | ----------------------------- | - |  | ---------- | -------------- |  |  |  | -------------------- |  |  |  |  |  |  |  | -------- | --- |  |  | ------------ | ---- |  |  | ----------- | --- |  |  | --------------- | 
|                                                                                |  | Maximum exposure    |  |  |                               |   |  | Collateral |                |  |  |  |                      |  | 
|                                                                                |  | Balance sheet asset |  |  |                               |   |  |            |                |  |  |  |                      |  |  |  |  |  |  |  |         
|                                                                                |  | Gross
amounts
£bn   |  |  | Impairmentloss allowances
£bn |   |  |            | Netamounts
£bn |  |  |  | Off-balancesheet
£bn |  |  |  |  |  |  |  | Cash £bn | (1) |  |  | Non-cash £bn | (1)  |  |  | Netting £bn | (2) |  |  | Netexposure
£bn | 
|2015                                                                            |  |                     |  |  |                               |   |  |            |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
|Cash and balances at central banks                                              |  | 16.8                |  |  |                              |   |  |            | 16.8           |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 16.8            | 
|Trading assets:                                                                 |  |                     |  |  |                               |   |  |            |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
| Loans and advances to banks                                                   |  | 5.4                 |  |  |                              |   |  |            | 5.4            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  | (0.4        | )   |  |  | 5.0             | 
| Loans and advances to customers                                               |  | 6.0                 |  |  |                              |   |  |            | 6.0            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  | (5.0         | )    |  |  |            |     |  |  | 1.0             | 
| Debt securities                                                               |  | 5.5                 |  |  |                              |   |  |            | 5.5            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 5.5             | 
|Total trading assets                                                            |  | 16.9                |  |  |                              |   |  |            | 16.9           |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  | (5.0         | )    |  |  | (0.4        | )   |  |  | 11.5            | 
|Derivative financial instruments                                                |  | 20.9                |  |  |                              |   |  |            | 20.9           |  |  |  |                     |  |  |  |  |  |  |  | (1.1     | )   |  |  |             |      |  |  | (17.3       | )   |  |  | 2.5             | 
|Financial assets designated at fair value:                                      |  |                     |  |  |                               |   |  |            |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
| Loans and advances to customers                                               |  | 1.9                 |  |  |                              |   |  |            | 1.9            |  |  |  | 0.3                  |  |  |  |  |  |  |  |         |     |  |  | (2.2         | )    |  |  |            |     |  |  |                | 
| Debt securities                                                               |  | 0.5                 |  |  |                              |   |  |            | 0.5            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 0.5             | 
|Total financial assets designated at fair value                                 |  | 2.4                 |  |  |                              |   |  |            | 2.4            |  |  |  | 0.3                  |  |  |  |  |  |  |  |         |     |  |  | (2.2         | )    |  |  |            |     |  |  | 0.5             | 
|Loans and advances to banks                                                     |  | 3.5                 |  |  |                              |   |  |            | 3.5            |  |  |  | 1.3                  |  |  |  |  |  |  |  |         |     |  |  | (0.8         | )    |  |  | (0.3        | )   |  |  | 3.7             | 
|Loans and advances to customers:(3)                                             |  |                     |  |  |                               |   |  |            |                |  |  |  |                      |  |  |  |  |  |  |  |          |     |  |  |              |      |  |  |             |     |  |  |                 | 
| Advances secured on residential property                                      |  | 153.3               |  |  | (0.4                          | ) |  |            | 152.9          |  |  |  | 6.7                  |  |  |  |  |  |  |  |         |     |  |  | (159.2       | )(4) |  |  |            |     |  |  | 0.4             | 
| Corporate loans                                                               |  | 31.9                |  |  | (0.4                          | ) |  |            | 31.5           |  |  |  | 16.4                 |  |  |  |  |  |  |  | (0.1     | )   |  |  | (23.0        | )    |  |  |            |     |  |  | 24.8            | 
| Finance leases                                                                |  | 6.3                 |  |  | (0.1                          | ) |  |            | 6.2            |  |  |  | 0.6                  |  |  |  |  |  |  |  | (0.1     | )   |  |  | (5.3         | )    |  |  |            |     |  |  | 1.4             | 
| Other unsecured loans                                                         |  | 6.3                 |  |  | (0.3                          | ) |  |            | 6.0            |  |  |  | 12.0                 |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 18.0            | 
| Amounts due from fellow Banco Santander group subsidiaries and
joint ventures |  | 1.4                 |  |  |                              |   |  |            | 1.4            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 1.4             | 
|Total loans and advances to customers                                           |  | 199.2               |  |  | (1.2                          | ) |  |            | 198.0          |  |  |  | 35.7                 |  |  |  |  |  |  |  | (0.2     | )   |  |  | (187.5       | )    |  |  |            |     |  |  | 46.0            | 
|Loans and receivables securities(3)                                             |  | 0.1                 |  |  |                              |   |  |            | 0.1            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 0.1             | 
|Available-for-sale debt securities                                              |  | 8.9                 |  |  |                              |   |  |            | 8.9            |  |  |  |                     |  |  |  |  |  |  |  |         |     |  |  |             |      |  |  |            |     |  |  | 8.9             | 
|Total                                                                           |  | 268.7               |  |  | (1.2                          | ) |  |            | 267.5          |  |  |  | 37.3                 |  |  |  |  |  |  |  | (1.3     | )   |  |  | (195.5       | )    |  |  | (18.0       | )   |  |  | 90.0            | 



|(1) | The forms of collateral we take to reduce credit risk include: residential and commercial property; other physical assets, including motor vehicles; liquid securities, including those transferred under reverse
repurchase agreements; cash, including cash used as collateral for derivative transactions; and receivables. Charges on residential property are most of the collateral we take.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | We can reduce credit risk exposures by applying netting. We do this mainly for derivative and repurchase transactions with financial institutions. For derivatives, we use standard master netting agreements. They allow
us to set off our credit risk exposure to a counterparty from a derivative against our obligations to the counterparty in the event of default. This gives us a lower net credit exposure. They may also reduce settlement exposure. For more on
this, see Credit risk mitigation in the Other segments  credit risk management section.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Balances include interest we have charged to the customers account and accrued interest that we have not charged to the account yet.
|--- | -------------------------------------------------------------------------------------------------------------------------------------

|(4) | The collateral value we have shown is limited to the balance of each associated individual loan. It does not include the impact of over-collateralisation (where the collateral has a higher value than the loan balance)
and includes collateral we would receive on draw down of certain off-balance sheet commitments.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Credit quality

Single rating scale(unaudited)

In the table below, we have used a single rating scale to ensure we are consistent across all our credit risk portfolios in how we report the risk of default. It has
eight grades for non-defaulted exposures, from 9 (lowest risk) to 2 (highest risk). We define each grade by an upper and lower probability of default (PD) value and we scale the grades so that the default risk increases by a factor of 10 every time
the grade number drops by 2 steps. For example, risk grade 9 has an average PD of 0.010%, and risk grade 7 has an average PD of 0.100%. We give defaulted exposures a grade 1 and a PD value of 100%. In the final column of the table we show the
approximate equivalent credit rating grade used by Standard & Poors Ratings Services (S&P).



|                        |  |          |         |  |         |  |         |         |  |  |                |  |  |  |             | 
|----------------------- |  | -------- | ------- |  | ------- |  | ------- | ------- |  |  | -------------- |  |  |  | ----------- | 
|Santander UK risk grade |  | PD range |         |  |         | 
|                        |  | Mid
%    |         |  | Lower
% |  |         | Upper
% |  |  | S&P
equivalent | 
|9                       |  |          | 0.010   |  |         |  | 0.000   |         |  |  | 0.021          |  |  |  | AAA to AA-  | 
|8                       |  |          | 0.032   |  |         |  | 0.021   |         |  |  | 0.066          |  |  |  | A+ to A     | 
|7                       |  |          | 0.100   |  |         |  | 0.066   |         |  |  | 0.208          |  |  |  | A- to BBB+  | 
|6                       |  |          | 0.316   |  |         |  | 0.208   |         |  |  | 0.658          |  |  |  | BBB to BBB- | 
|5                       |  |          | 1.000   |  |         |  | 0.658   |         |  |  | 2.081          |  |  |  | BB+ to BB-  | 
|4                       |  |          | 3.162   |  |         |  | 2.081   |         |  |  | 6.581          |  |  |  | B+ to B     | 
|3                       |  |          | 10.000  |  |         |  | 6.581   |         |  |  | 20.811         |  |  |  | B- to CCC   | 
|2                       |  |          | 31.623  |  |         |  | 20.811  |         |  |  | 99.999         |  |  |  | CC to C     | 
|1 (Default)             |  |          | 100.000 |  |         |  | 100.000 |         |  |  | 100.000        |  |  |  | D           | 





48Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Rating distribution

The tables below show the credit rating of our financial assets subject to credit risk. For more on the credit rating profiles of key portfolios, see the Credit
Risk  Retail Banking (i.e. residential mortgages) and Credit Risk  other segments sections.



|                                                                                |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
|------------------------------------------------------------------------------- |  | ----------------------- | ----------------- |  |  |  | -------------- |  |  |  | ----------------- |  |  |  | ------------------ |  |  |  | ----------------- |  |  |  | --------------- |  |  |  | -------------------- |  |  |  | ---------- | --- |  |  | ---------- | -
|                                                                                |  | Santander UK risk grade |                  
|                                                                                |  |                         | 9(AAA to
AA-)
£bn |  |  |  | 8(A+to A)
 £bn |  |  |  | 7(A- to
BBB+) £bn |  |  |  | 6(BBB to
BBB-) £bn |  |  |  | 5(BB+ to
BB-) £bn |  |  |  | 4(B+ to B)
 £bn |  |  |  | 1 to 3(B- to D)
 £bn |  |  |  | Other 
£bn | (1) |  |  | Total
 £bn |  
|2016                                                                            |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
|Cash and balances at central banks                                              |  |                         | 15.9              |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 1.2        |     |  |  | 17.1       |  
|Trading assets:                                                                 |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Loans and advances to banks                                                   |  |                         |                  |  |  |  | 2.6            |  |  |  | 3.9               |  |  |  | 0.8                |  |  |  | 0.2               |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 7.5        |  
| Loans and advances to customers                                               |  |                         | 0.8               |  |  |  | 4.3            |  |  |  | 4.6               |  |  |  | 0.5                |  |  |  | 0.1               |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 10.3       |  
| Debt securities                                                               |  |                         | 2.8               |  |  |  | 1.5            |  |  |  | 0.3               |  |  |  | 1.6                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 6.2        |  
|Total trading assets                                                            |  |                         | 3.6               |  |  |  | 8.4            |  |  |  | 8.8               |  |  |  | 2.9                |  |  |  | 0.3               |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 24.0       |  
|Derivative financial instruments                                                |  |                         | 1.1               |  |  |  | 10.4           |  |  |  | 9.9               |  |  |  | 3.4                |  |  |  | 0.6               |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 25.5       |  
|Financial assets designated at fair value:                                      |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Loans and advances to customers                                               |  |                         | 0.6               |  |  |  | 0.5            |  |  |  | 0.6               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 1.7        |  
| Debt securities                                                               |  |                         |                  |  |  |  | 0.1            |  |  |  |                  |  |  |  | 0.3                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 0.4        |  
|Total financial assets designated at fair value                                 |  |                         | 0.6               |  |  |  | 0.6            |  |  |  | 0.6               |  |  |  | 0.3                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 2.1        |  
|Loans and advances to banks                                                     |  |                         | 1.7               |  |  |  | 1.5            |  |  |  | 0.5               |  |  |  | 0.2                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.5        |     |  |  | 4.4        |  
|Loans and advances to customers:(2)                                             |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Advances secured on residential property                                      |  |                         | 2.1               |  |  |  | 23.8           |  |  |  | 74.0              |  |  |  | 37.8               |  |  |  | 6.8               |  |  |  | 5.3             |  |  |  | 4.9                  |  |  |  |           |     |  |  | 154.7      |  
| Corporate loans                                                               |  |                         | 3.3               |  |  |  | 3.2            |  |  |  | 1.6               |  |  |  | 10.5               |  |  |  | 7.4               |  |  |  | 3.7             |  |  |  | 0.9                  |  |  |  | 1.4        |     |  |  | 32.0       |  
| Finance leases                                                                |  |                         |                  |  |  |  |               |  |  |  | 0.4               |  |  |  | 1.3                |  |  |  | 2.0               |  |  |  | 1.9             |  |  |  | 1.0                  |  |  |  | 0.1        |     |  |  | 6.7        |  
| Other unsecured loans                                                         |  |                         |                  |  |  |  |               |  |  |  | 0.2               |  |  |  | 1.5                |  |  |  | 2.4               |  |  |  | 0.9             |  |  |  | 0.4                  |  |  |  | 0.8        |     |  |  | 6.2        |  
| Amounts due from fellow Banco Santander group subsidiaries and
joint ventures |  |                         | 1.1               |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 1.1        |  
|Total loans and advances to customers                                           |  |                         | 6.5               |  |  |  | 27.0           |  |  |  | 76.2              |  |  |  | 51.1               |  |  |  | 18.6              |  |  |  | 11.8            |  |  |  | 7.2                  |  |  |  | 2.3        |     |  |  | 200.7      |  
|Loans and receivables securities(2)                                             |  |                         | 0.1               |  |  |  |               |  |  |  | 0.2               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 0.3        |  
|Available-for-sale debt securities                                              |  |                         | 7.8               |  |  |  | 1.8            |  |  |  | 0.7               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 10.4       |  
|Held-to-maturity investments                                                    |  |                         | 6.6               |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 6.6        |  
|                                                                                |  |                         | 43.9              |  |  |  | 49.7           |  |  |  | 96.9              |  |  |  | 57.9               |  |  |  | 19.5              |  |  |  | 11.8            |  |  |  | 7.2                  |  |  |  | 4.2        |     |  |  | 291.1      |  
|Impairment loss allowances                                                      |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | (1.0       | )
|Total                                                                           |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | 290.1      |  
|                                                                                |  |                         |                   |  |  |  |                |  | 
|Of which:                                                                       |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
|Neither past due nor impaired:                                                  |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Cash and balances at central banks                                            |  |                         | 15.9              |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 1.2        |     |  |  | 17.1       |  
| Trading assets                                                                |  |                         | 3.6               |  |  |  | 8.4            |  |  |  | 8.8               |  |  |  | 2.9                |  |  |  | 0.3               |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 24.0       |  
| Derivative financial instruments                                              |  |                         | 1.1               |  |  |  | 10.4           |  |  |  | 9.9               |  |  |  | 3.4                |  |  |  | 0.6               |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 25.5       |  
| Financial assets designated at fair value                                     |  |                         | 0.6               |  |  |  | 0.6            |  |  |  | 0.6               |  |  |  | 0.3                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 2.1        |  
| Loans and advances to banks                                                   |  |                         | 1.7               |  |  |  | 1.5            |  |  |  | 0.5               |  |  |  | 0.2                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.5        |     |  |  | 4.4        |  
| Loans and advances to customers                                               |  |                         | 6.5               |  |  |  | 27.0           |  |  |  | 76.2              |  |  |  | 51.1               |  |  |  | 18.5              |  |  |  | 11.7            |  |  |  | 3.3                  |  |  |  | 2.3        |     |  |  | 196.6      |  
| Loans and receivables securities                                              |  |                         | 0.1               |  |  |  |               |  |  |  | 0.2               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 0.3        |  
| Available-for-sale debt securities                                            |  |                         | 7.8               |  |  |  | 1.8            |  |  |  | 0.7               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 10.4       |  
| Held-to-maturity investments                                                  |  |                         | 6.6               |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 6.6        |  
|Total neither past due nor impaired                                             |  |                         | 43.9              |  |  |  | 49.7           |  |  |  | 96.9              |  |  |  | 57.9               |  |  |  | 19.4              |  |  |  | 11.7            |  |  |  | 3.3                  |  |  |  | 4.2        |     |  |  | 287.0      |  
|Past due but not
impaired(3)                                                    |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  | 0.1               |  |  |  | 0.1             |  |  |  | 2.5                  |  |  |  |           |     |  |  | 2.7        |  
|Impaired(4)                                                                     |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  | 1.4                  |  |  |  |           |     |  |  | 1.4        |  
|                                                                                |  |                         | 43.9              |  |  |  | 49.7           |  |  |  | 96.9              |  |  |  | 57.9               |  |  |  | 19.5              |  |  |  | 11.8            |  |  |  | 7.2                  |  |  |  | 4.2        |     |  |  | 291.1      |  
|Impairment loss allowances                                                      |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | (1.0       | )
|Total                                                                           |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | 290.1      |  



|(1) | Other items include cash at hand and smaller cases mainly in the consumer finance and commercial mortgages portfolios. We use scorecards for these items, rather than rating models.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Balances include interest we have charged to the customers account and accrued interest we have not charged to the account yet.
|--- | --------------------------------------------------------------------------------------------------------------------------------

|(3) | Balances include mortgage loans in arrears which have been assessed for incurred but not observed (IBNO) losses as described in Note 1 to the Consolidated Financial Statements.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Impaired loans are loans we have assessed for observed impairment loss allowances. This included loans individually assessed for impairment of £578m.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc49



---

##### Table of Contents



Annual Report 2016

Risk review











|                                                                                |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
|------------------------------------------------------------------------------- |  | ----------------------- | ----------------- |  |  |  | -------------- |  |  |  | ----------------- |  |  |  | ------------------ |  |  |  | ----------------- |  |  |  | --------------- |  |  |  | -------------------- |  |  |  | ---------- | --- |  |  | ---------- | -
|                                                                                |  | Santander UK risk grade |                  
|                                                                                |  |                         | 9(AAA to
AA-)
£bn |  |  |  | 8(A+to A)
 £bn |  |  |  | 7(A- to
BBB+) £bn |  |  |  | 6(BBB to
BBB-) £bn |  |  |  | 5(BB+ to
BB-) £bn |  |  |  | 4(B+ to B)
 £bn |  |  |  | 1 to 3(B- to D)
 £bn |  |  |  | Other 
£bn | (1) |  |  | Total
 £bn |  
|2015                                                                            |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
|Cash and balances at central banks                                              |  |                         | 15.5              |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 1.3        |     |  |  | 16.8       |  
|Trading assets:                                                                 |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Loans and advances to banks                                                   |  |                         | 0.2               |  |  |  | 1.4            |  |  |  | 3.5               |  |  |  | 0.3                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 5.4        |  
| Loans and advances to customers                                               |  |                         | 0.6               |  |  |  | 3.9            |  |  |  | 1.3               |  |  |  | 0.1                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 6.0        |  
| Debt securities                                                               |  |                         | 1.0               |  |  |  | 3.1            |  |  |  | 0.8               |  |  |  | 0.6                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 5.5        |  
|Total trading assets                                                            |  |                         | 1.8               |  |  |  | 8.4            |  |  |  | 5.6               |  |  |  | 1.0                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 16.9       |  
|Derivative financial instruments                                                |  |                         | 0.4               |  |  |  | 9.9            |  |  |  | 8.5               |  |  |  | 1.5                |  |  |  | 0.6               |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 20.9       |  
|Financial assets designated at fair value:                                      |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Loans and advances to customers                                               |  |                         | 0.8               |  |  |  | 0.4            |  |  |  | 0.6               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 1.9        |  
| Debt securities                                                               |  |                         | 0.3               |  |  |  | 0.2            |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 0.5        |  
|Total financial assets designated at fair value                                 |  |                         | 1.1               |  |  |  | 0.6            |  |  |  | 0.6               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 2.4        |  
|Loans and advances to banks                                                     |  |                         | 1.4               |  |  |  | 1.9            |  |  |  | 0.1               |  |  |  | 0.1                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 3.5        |  
|Loans and advances to customers:(2)                                             |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Advances secured on residential property                                      |  |                         | 2.7               |  |  |  | 21.4           |  |  |  | 68.8              |  |  |  | 41.0               |  |  |  | 7.2               |  |  |  | 6.4             |  |  |  | 5.8                  |  |  |  |           |     |  |  | 153.3      |  
| Corporate loans                                                               |  |                         | 3.3               |  |  |  | 2.7            |  |  |  | 2.5               |  |  |  | 9.6                |  |  |  | 7.7               |  |  |  | 3.9             |  |  |  | 0.8                  |  |  |  | 1.4        |     |  |  | 31.9       |  
| Finance leases                                                                |  |                         |                  |  |  |  |               |  |  |  | 0.4               |  |  |  | 1.2                |  |  |  | 2.0               |  |  |  | 1.7             |  |  |  | 0.9                  |  |  |  | 0.1        |     |  |  | 6.3        |  
| Other unsecured loans                                                         |  |                         |                  |  |  |  |               |  |  |  | 0.2               |  |  |  | 1.2                |  |  |  | 2.7               |  |  |  | 0.9             |  |  |  | 0.4                  |  |  |  | 0.9        |     |  |  | 6.3        |  
| Amounts due from fellow Banco Santander group subsidiaries and
joint ventures |  |                         | 1.4               |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 1.4        |  
|Total loans and advances to customers                                           |  |                         | 7.4               |  |  |  | 24.1           |  |  |  | 71.9              |  |  |  | 53.0               |  |  |  | 19.6              |  |  |  | 12.9            |  |  |  | 7.9                  |  |  |  | 2.4        |     |  |  | 199.2      |  
|Loans and receivables securities(2)                                             |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  | 0.1             |  |  |  |                     |  |  |  |           |     |  |  | 0.1        |  
|Available-for-sale debt securities                                              |  |                         | 6.8               |  |  |  | 1.4            |  |  |  | 0.7               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 8.9        |  
|Held-to-maturity investments                                                    |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           |  
|                                                                                |  |                         | 34.4              |  |  |  | 46.3           |  |  |  | 87.4              |  |  |  | 55.6               |  |  |  | 20.2              |  |  |  | 13.0            |  |  |  | 7.9                  |  |  |  | 3.9        |     |  |  | 268.7      |  
|Impairment loss allowances                                                      |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | (1.2       | )
|Total                                                                           |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | 267.5      |  
|                                                                                |  |                         |                   |  |  |  |                |  | 
|Of which:                                                                       |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
|Neither past due nor impaired:                                                  |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  |            |  
| Cash and balances at central banks                                            |  |                         | 15.5              |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 1.3        |     |  |  | 16.8       |  
| Trading assets                                                                |  |                         | 1.8               |  |  |  | 8.4            |  |  |  | 5.6               |  |  |  | 1.0                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 16.9       |  
| Derivative financial instruments                                              |  |                         | 0.4               |  |  |  | 9.9            |  |  |  | 8.5               |  |  |  | 1.5                |  |  |  | 0.6               |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 20.9       |  
| Financial assets designated at fair value                                     |  |                         | 1.1               |  |  |  | 0.6            |  |  |  | 0.6               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  | 0.1        |     |  |  | 2.4        |  
| Loans and advances to banks                                                   |  |                         | 1.4               |  |  |  | 1.9            |  |  |  | 0.1               |  |  |  | 0.1                |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 3.5        |  
| Loans and advances to customers                                               |  |                         | 7.4               |  |  |  | 24.1           |  |  |  | 71.9              |  |  |  | 53.0               |  |  |  | 19.5              |  |  |  | 12.8            |  |  |  | 3.4                  |  |  |  | 2.4        |     |  |  | 194.5      |  
| Loans and receivables securities                                              |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  | 0.1             |  |  |  |                     |  |  |  |           |     |  |  | 0.1        |  
| Available-for-sale securities                                                 |  |                         | 6.8               |  |  |  | 1.4            |  |  |  | 0.7               |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  | 8.9        |  
| Held-to-maturity investments                                                  |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           |  
|Total neither past due nor impaired                                             |  |                         | 34.4              |  |  |  | 46.3           |  |  |  | 87.4              |  |  |  | 55.6               |  |  |  | 20.1              |  |  |  | 12.9            |  |  |  | 3.4                  |  |  |  | 3.9        |     |  |  | 264.0      |  
|Past due but not
impaired(3)                                                    |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  | 0.1               |  |  |  |                |  |  |  | 3.1                  |  |  |  |           |     |  |  | 3.2        |  
|Impaired                                                                        |  |                         |                  |  |  |  |               |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  | 0.1             |  |  |  | 1.4                  |  |  |  |           |     |  |  | 1.5        |  
|                                                                                |  |                         | 34.4              |  |  |  | 46.3           |  |  |  | 87.4              |  |  |  | 55.6               |  |  |  | 20.2              |  |  |  | 13.0            |  |  |  | 7.9                  |  |  |  | 3.9        |     |  |  | 268.7      |  
|Impairment loss allowances                                                      |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | (1.2       | )
|Total                                                                           |  |                         |                   |  |  |  |                |  |  |  |                   |  |  |  |                    |  |  |  |                   |  |  |  |                 |  |  |  |                      |  |  |  |            |     |  |  | 267.5      |  



|(1) | Other items include cash at hand and smaller cases mainly in the consumer finance and commercial mortgages portfolios. We use scorecards for these items, rather than rating models.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Balances include interest we have charged to the customers account and accrued interest we have not charged to the account yet.
|--- | --------------------------------------------------------------------------------------------------------------------------------

|(3) | Balances include mortgage loans in arrears which have been assessed for incurred but not observed (IBNO) losses as described in Note 1 to the Consolidated Financial Statements.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





50Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Age of loans and advances that are past due but not impaired

At 31 December 2016, loans and advances of £2.7bn (2015: £3.2bn) were past due but not impaired. Of these balances, £0.1bn (2015: £0.1bn)
were less than 1 month overdue, £0.8bn (2015: £1.0bn) were 1 to 2 months overdue, £0.5bn (2015: £0.6bn) were 2 to 3 months overdue, £0.7bn (2015: £0.8bn) were 3 to 6 months overdue, and £0.6bn (2015:
£0.7bn) were greater than 6 months overdue.

Concentrations of credit risk exposures

Managing concentrations of risk is a key part of risk management. We track how concentrated our credit risk portfolios are using various criteria, including geographical
areas and countries, economic sectors, products and groups of customers. Although our operations are based mainly in the UK, we have built up exposures to entities around the world. As a result, we are exposed to concentrations of risk related
to geographical area and industries. We analyse these below:

Geographical concentrations

As part of our approach to credit risk management and Risk Appetite, we set exposure limits to countries and geographical areas. We set our limits with reference to the
country limits set by Banco Santander SA. These are determined according to how the country is classified (whether it is a developed OECD country or not), its credit rating, its gross domestic product, and the types of products and
services Banco Santander wants to offer in that country. The tables below set out our loans and advances to banks and customers by geographical area.



|                                                                          |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  |           |  
|------------------------------------------------------------------------- |  |  | ------ |  |  |  | ---------------------- | --- |  |  | ----------------- |  |  |  | ------ | ----- |  |  | ---------------- |  |  |  | --------- | -
|                                                                          |  |  | UK £bn |  |  |  | Peripheraleurozone
£bn | (1) |  |  | Rest ofEurope £bn |  |  |  | US £bn |       |  |  | Rest ofworld £bn |  |  |  | Total £bn |  
|2016                                                                      |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  |           |  
|Loans and advances to banks                                               |  |  | 2.7    |  |  |  | 0.1                    |     |  |  | 0.1               |  |  |  | 0.3    |       |  |  | 1.2              |  |  |  | 4.4       |  
|Loans and advances to customers:(2)                                       |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  |           |  
| Advances secured on residential property                                |  |  | 154.7  |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  |                 |  |  |  | 154.7     |  
| Corporate loans                                                         |  |  | 30.8   |  |  |  | 0.2                    |     |  |  | 0.3               |  |  |  | 0.5    |       |  |  | 0.2              |  |  |  | 32.0      |  
| Finance leases                                                          |  |  | 6.6    |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  | 0.1              |  |  |  | 6.7       |  
| Other unsecured loans                                                   |  |  | 6.2    |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  |                 |  |  |  | 6.2       |  
| Amounts due from fellow Banco Santander subsidiaries and joint
ventures |  |  |       |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  | 1.1              |  |  |  | 1.1       |  
|Loans and advances to customers (gross)                                   |  |  | 198.3  |  |  |  | 0.2                    |     |  |  | 0.3               |  |  |  | 0.5    |       |  |  | 1.4              |  |  |  | 200.7     |  
|Less: impairment loss allowances                                          |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  | (1.0      | )
|Loans and advances to customers, net of impairment loss
allowances        |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        | 199.7 | 
|                                                                          |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  | 204.1     |  
|                                                                          |  |  |        |  |  | 
|2015                                                                      |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  |           |  
|Loans and advances to banks                                               |  |  | 2.0    |  |  |  |                       |     |  |  |                  |  |  |  | 0.5    |       |  |  | 1.0              |  |  |  | 3.5       |  
|Loans and advances to customers:(2)                                       |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  |           |  
| Advances secured on residential property                                |  |  | 153.3  |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  |                 |  |  |  | 153.3     |  
| Corporate loans                                                         |  |  | 30.5   |  |  |  | 0.2                    |     |  |  | 0.4               |  |  |  | 0.4    |       |  |  | 0.4              |  |  |  | 31.9      |  
| Finance leases                                                          |  |  | 6.2    |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  | 0.1              |  |  |  | 6.3       |  
| Other unsecured loans                                                   |  |  | 6.3    |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  |                 |  |  |  | 6.3       |  
| Amounts due from fellow Banco Santander subsidiaries and joint
ventures |  |  |       |  |  |  |                       |     |  |  |                  |  |  |  |       |       |  |  | 1.4              |  |  |  | 1.4       |  
|Loans and advances to customers (gross)                                   |  |  | 196.3  |  |  |  | 0.2                    |     |  |  | 0.4               |  |  |  | 0.4    |       |  |  | 1.9              |  |  |  | 199.2     |  
|Less: impairment loss allowances                                          |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  | (1.2      | )
|Loans and advances to customers, net of impairment loss
allowances        |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        | 198.0 | 
|                                                                          |  |  |        |  |  |  |                        |     |  |  |                   |  |  |  |        |       |  |  |                  |  |  |  | 201.5     |  



|(1) | The peripheral eurozone is Portugal, Ireland, Italy, Spain and Greece.
|--- | ----------------------------------------------------------------------

|(2) | Balances include interest we have charged to the customers account and accrued interest we have not charged to the account yet. They also exclude loans classified as Financial assets designated at fair
value.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

For more geographical information, see Other key risks and areas of focus  country risk exposures.





Santander UK plc51



---

##### Table of Contents



Annual Report 2016

Risk review









Industry concentrations

As part of our approach to credit risk management and
Risk Appetite, we set concentration limits by industry sector. These limits are set based on the industry outlook, our strategic aims and desired level of concentration, but also take into account any relevant limit set by Banco Santander SA.



|                                                                          |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  |             |  
|------------------------------------------------------------------------- |  |  | ----------------- |  |  |  | --------------------------------------- |  |  |  | ------------------- |  |  |  | ----------- |  |  |  | -------------------------------------------- | ----- |  |  | ----------- |  |  |  | ----------- | -
|                                                                          |  |  | Residential 
 £bn |  |  |  | Cards andpersonal
unsecured lending
£bn |  |  |  | SocialHousing
 
£bn |  |  |  | Banks 
 £bn |  |  |  | SME andcorporate
(including real estate)
£bn |       |  |  | Other 
 £bn |  |  |  | Total 
 £bn |  
|2016                                                                      |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  |             |  
|Loans and advances to banks                                               |  |  |                  |  |  |  |                                        |  |  |  |                    |  |  |  | 4.4         |  |  |  |                                             |       |  |  |            |  |  |  | 4.4         |  
|Loans and advances to customers:(1)                                       |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  |             |  
| Advances secured on residential property                                |  |  | 154.7             |  |  |  |                                        |  |  |  |                    |  |  |  |            |  |  |  |                                             |       |  |  |            |  |  |  | 154.7       |  
| Corporate loans                                                         |  |  |                  |  |  |  |                                        |  |  |  | 6.1                 |  |  |  |            |  |  |  | 24.0                                         |       |  |  | 1.9         |  |  |  | 32.0        |  
| Finance leases                                                          |  |  |                  |  |  |  |                                        |  |  |  |                    |  |  |  |            |  |  |  | 0.7                                          |       |  |  | 6.0         |  |  |  | 6.7         |  
| Other unsecured loans                                                   |  |  |                  |  |  |  | 6.1                                     |  |  |  |                    |  |  |  |            |  |  |  |                                             |       |  |  | 0.1         |  |  |  | 6.2         |  
| Amounts due from fellow Banco Santander subsidiaries and joint
ventures |  |  |                  |  |  |  |                                        |  |  |  |                    |  |  |  |            |  |  |  |                                             |       |  |  | 1.1         |  |  |  | 1.1         |  
|Loans and advances to customers (gross)                                   |  |  | 154.7             |  |  |  | 6.1                                     |  |  |  | 6.1                 |  |  |  |            |  |  |  | 24.7                                         |       |  |  | 9.1         |  |  |  | 200.7       |  
|Less: impairment loss allowances                                          |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  | (1.0        | )
|Loans and advances to customers, net of impairment loss
allowances        |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              | 199.7 | 
|                                                                          |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  | 204.1       |  
|                                                                          |  |  |                   |  |  |  |                                        
|2015                                                                      |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  |             |  
|Loans and advances to banks                                               |  |  |                  |  |  |  |                                        |  |  |  |                    |  |  |  | 3.5         |  |  |  |                                             |       |  |  |            |  |  |  | 3.5         |  
|Loans and advances to customers:(1)                                       |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  |             |  
| Advances secured on residential property                                |  |  | 153.3             |  |  |  |                                        |  |  |  |                    |  |  |  |            |  |  |  |                                             |       |  |  |            |  |  |  | 153.3       |  
| Corporate loans                                                         |  |  |                  |  |  |  |                                        |  |  |  | 6.1                 |  |  |  |            |  |  |  | 25.5                                         |       |  |  | 0.3         |  |  |  | 31.9        |  
| Finance leases                                                          |  |  |                  |  |  |  |                                        |  |  |  |                    |  |  |  |            |  |  |  |                                             |       |  |  | 6.3         |  |  |  | 6.3         |  
| Other unsecured loans                                                   |  |  |                  |  |  |  | 6.3                                     |  |  |  |                    |  |  |  |            |  |  |  |                                             |       |  |  |            |  |  |  | 6.3         |  
| Amounts due from fellow Banco Santander subsidiaries and joint
ventures |  |  |                  |  |  |  |                                        |  |  |  |                    |  |  |  |            |  |  |  |                                             |       |  |  | 1.4         |  |  |  | 1.4         |  
|Loans and advances to customers (gross)                                   |  |  | 153.3             |  |  |  | 6.3                                     |  |  |  | 6.1                 |  |  |  |            |  |  |  | 25.5                                         |       |  |  | 8.0         |  |  |  | 199.2       |  
|Less: impairment loss allowances                                          |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  | (1.2        | )
|Loans and advances to customers, net of impairment loss
allowances        |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              | 198.0 | 
|                                                                          |  |  |                   |  |  |  |                                         |  |  |  |                     |  |  |  |             |  |  |  |                                              |       |  |  |             |  |  |  | 201.5       |  



|(1) | Balances include interest we have charged to the customers account and accrued interest we have not charged to the account yet. They also exclude loans classified as Financial assets designated at fair
value.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

For more industry information, see Other key risks and areas of focus  country risk exposures. We also provide further
portfolio analyses on committed exposures, which are typically higher than the balance sheet value, in the following Credit risk review sections.

Forbearance summary

The customer loans in the tables below and in the
remainder of the Credit risk section are presented differently from the balances in the Consolidated Balance Sheet. The main difference is that the customer loans below exclude inter-company balances. We disclose inter-company balances
separately in the Notes to the Consolidated Financial Statements. In addition, customer loans are presented on an amortised cost basis and exclude interest we have accrued but not charged to customers accounts yet.

The table below shows customer loans that are subject to forbearance. For more on forbearance on mortgages in Retail Banking, as well as forbearance in Commercial
Banking, Global Corporate Banking, and Corporate Centre, see the sections that follow.



|                          |  |                    |       |  |                |  |       |      |  |  |                    |  |  |                |       |     |  |  |       |    
|------------------------- |  | ------------------ | ----- |  | -------------- |  | ----- | ---- |  |  | ------------------ |  |  | -------------- | ----- | --- |  |  | ----- | ---
|                          |  | 2016               |       |  |                |  |       | 2015 | 
|                          |  | Customer loans
£bn |       |  | Forbearance
£m |  |       |      |  |  | Customer loans
£bn |  |  | Forbearance
£m |      
|Retail Banking:           |  |                    | 168.6 |  |                |  | 1,935 |      |  |  |                    |  |  |                | 167.0 | (1) |  |  | 3,868 | (1)
| Residential mortgages   |  |                    | 154.3 |  |                |  | 1,766 |      |  |  |                    |  |  |                | 152.8 |     |  |  | 3,668 |    
| Business banking        |  |                    | 2.3   |  |                |  | 94    |      |  |  |                    |  |  |                | 2.3   |     |  |  | 160   |    
| Consumer finance        |  |                    | 6.8   |  |                |  |      |      |  |  |                    |  |  |                | 6.3   |     |  |  |      |    
| Other unsecured lending |  |                    | 5.2   |  |                |  | 75    |      |  |  |                    |  |  |                | 5.6   |     |  |  | 40    |    
|Commercial Banking        |  |                    | 19.4  |  |                |  | 534   |      |  |  |                    |  |  |                | 18.7  | (1) |  |  | 545   | (1)
|Global Corporate Banking  |  |                    | 5.7   |  |                |  | 21    |      |  |  |                    |  |  |                | 5.5   |     |  |  | 10    |    
|Corporate Centre          |  |                    | 6.5   |  |                |  | 37    |      |  |  |                    |  |  |                | 7.4   |     |  |  | 120   |    
|                          |  |                    | 200.2 |  |                |  | 2,527 |      |  |  |                    |  |  |                | 198.6 |     |  |  | 4,543 |    



|(1) | Restated. For discussion see Note 46
|--- | ------------------------------------

2016 compared to 2015  Forbearance exit criteria(unaudited)

As described in
Forbearance in Credit risk management earlier in this section, we changed our exit criteria on forbearance in the first half of 2016. Applying these exit criteria to our customer loans at 31 December 2015, the loans
reported as forborne in the table above would reduce from £4,543m to £2,719m.





52Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Credit performance



|                          |  |  |                    |  |  |  |         |        |  |  |             |     |  |  |                |     |  |  |                     |  |  |  |                              | 
|------------------------- |  |  | ------------------ |  |  |  | ------- | ------ |  |  | ----------- | --- |  |  | -------------- | --- |  |  | ------------------- |  |  |  | ---------------------------- | 
|                          |  |  | Customer loans £bn |  |  |  | NPLs £m | (1)(2) |  |  | NPL ratio % | (3) |  |  | NPL coverage % | (4) |  |  | Gross write-offs £m |  |  |  | Impairmentloss allowances
£m | 
|2016                      |  |  |                    |  |  |  |         |        |  |  |             |     |  |  |                |     |  |  |                     |  |  |  |                              | 
|Retail Banking:           |  |  | 168.6              |  |  |  | 2,340   |        |  |  | 1.39        |     |  |  | 28             |     |  |  | 210                 |  |  |  | 651                          | 
| Residential mortgages   |  |  | 154.3              |  |  |  | 2,110   |        |  |  | 1.37        |     |  |  | 13             |     |  |  | 33                  |  |  |  | 279                          | 
| Business banking        |  |  | 2.3                |  |  |  | 108     |        |  |  | 4.70        |     |  |  | 53             |     |  |  | 24                  |  |  |  | 57                           | 
| Consumer finance        |  |  | 6.8                |  |  |  | 32      |        |  |  | 0.47        |     |  |  | 456            |     |  |  | 30                  |  |  |  | 146                          | 
| Other unsecured lending |  |  | 5.2                |  |  |  | 90      |        |  |  | 1.73        |     |  |  | 188            |     |  |  | 123                 |  |  |  | 169                          | 
|Commercial Banking        |  |  | 19.4               |  |  |  | 518     |        |  |  | 2.67        |     |  |  | 42             |     |  |  | 10                  |  |  |  | 220                          | 
|Global Corporate Banking  |  |  | 5.7                |  |  |  | 63      |        |  |  | 1.11        |     |  |  | 90             |     |  |  |                    |  |  |  | 57                           | 
|Corporate Centre          |  |  | 6.5                |  |  |  | 73      |        |  |  | 1.12        |     |  |  | 84             |     |  |  | 51                  |  |  |  | 61                           | 
|                          |  |  | 200.2              |  |  |  | 2,994   |        |  |  | 1.50        |     |  |  | 33             |     |  |  | 271                 |  |  |  | 989                          | 
|                          |  |  |                    |  |  | 
|2015                      |  |  |                    |  |  |  |         |        |  |  |             |     |  |  |                |     |  |  |                     |  |  |  |                              | 
|Retail Banking:(5)        |  |  | 167.0              |  |  |  | 2,520   |        |  |  | 1.51        |     |  |  | 33             |     |  |  | 248                 |  |  |  | 823                          | 
| Residential mortgages   |  |  | 152.8              |  |  |  | 2,252   |        |  |  | 1.47        |     |  |  | 19             |     |  |  | 40                  |  |  |  | 424                          | 
| Business banking        |  |  | 2.3                |  |  |  | 155     |        |  |  | 6.74        |     |  |  | 48             |     |  |  | 43                  |  |  |  | 75                           | 
| Consumer finance        |  |  | 6.3                |  |  |  | 28      |        |  |  | 0.44        |     |  |  | 486            |     |  |  | 22                  |  |  |  | 136                          | 
| Other unsecured lending |  |  | 5.6                |  |  |  | 85      |        |  |  | 1.52        |     |  |  | 221            |     |  |  | 143                 |  |  |  | 188                          | 
|Commercial Banking(5)     |  |  | 18.7               |  |  |  | 439     |        |  |  | 2.35        |     |  |  | 45             |     |  |  | 47                  |  |  |  | 199                          | 
|Global Corporate Banking  |  |  | 5.5                |  |  |  | 10      |        |  |  | 0.18        |     |  |  | 330            |     |  |  | 28                  |  |  |  | 33                           | 
|Corporate Centre          |  |  | 7.4                |  |  |  | 87      |        |  |  | 1.18        |     |  |  | 117            |     |  |  | 45                  |  |  |  | 102                          | 
|                          |  |  | 198.6              |  |  |  | 3,056   |        |  |  | 1.54        |     |  |  | 38             |     |  |  | 368                 |  |  |  | 1,157                        | 



|(1) | We define NPLs in the Credit risk management section.
|--- | -------------------------------------------------------

|(2) | All NPLs continue accruing interest.
|--- | ------------------------------------

|(3) | NPLs as a percentage of customer loans.
|--- | ---------------------------------------

|(4) | Impairment loss allowances as a percentage of NPLs. Impairment loss allowances relate to early arrears and performing assets (i.e. the IBNO provision) as well as NPLs, so the ratio can exceed 100%.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | Restated. For discussion see Note 46
|--- | ------------------------------------

2016 compared to 2015(unaudited)

The total NPL
ratio improved to 1.50% (2015: 1.54%), with all loan books performing well.

Lower NPL and coverage ratios in Retail Banking were driven by the quality of our
mortgage portfolio, the positive impact on our collateral from the continued rise in house prices, as well as an update to our mortgage model.

The NPL ratio for
Commercial Banking increased to 2.67% (2015: 2.35%), partly due to a loan of £50m that moved to non-performance, but which fully repaid in early 2017. In Global Corporate Banking, the NPL ratio increased to 1.11% (2015: 0.18%), with a loan of
£43m that also moved to non-performance.

For more on the credit performance of our key portfolios by business segment, see the Retail Banking 
credit risk review and Other segments  credit risk review sections.

Corporate lending



|                         |  |  |                    |  |  |  |         |        |  |  |             |     |  |  |                |     |  |  |                     |  |  |  |                              | 
|------------------------ |  |  | ------------------ |  |  |  | ------- | ------ |  |  | ----------- | --- |  |  | -------------- | --- |  |  | ------------------- |  |  |  | ---------------------------- | 
|                         |  |  | Customer loans £bn |  |  |  | NPLs £m | (1)(2) |  |  | NPL ratio % | (3) |  |  | NPL coverage % | (4) |  |  | Gross write-offs £m |  |  |  | Impairmentloss allowances
£m | 
|2016                     |  |  |                    |  |  |  |         |        |  |  |             |     |  |  |                |     |  |  |                     |  |  |  |                              | 
|Business banking         |  |  | 2.3                |  |  |  | 108     |        |  |  | 4.70        |     |  |  | 53             |     |  |  | 24                  |  |  |  | 57                           | 
|Commercial Banking       |  |  | 19.4               |  |  |  | 518     |        |  |  | 2.67        |     |  |  | 42             |     |  |  | 10                  |  |  |  | 220                          | 
|Global Corporate Banking |  |  | 5.7                |  |  |  | 63      |        |  |  | 1.11        |     |  |  | 90             |     |  |  |                    |  |  |  | 57                           | 
|Total corporate lending  |  |  | 27.4               |  |  |  | 689     |        |  |  | 2.51        |     |  |  | 48             |     |  |  | 34                  |  |  |  | 334                          | 
|                         |  |  |                    |  |  | 
|2015                     |  |  |                    |  |  |  |         |        |  |  |             |     |  |  |                |     |  |  |                     |  |  |  |                              | 
|Business banking         |  |  | 2.3                |  |  |  | 155     |        |  |  | 6.74        |     |  |  | 48             |     |  |  | 43                  |  |  |  | 75                           | 
|Commercial Banking       |  |  | 18.7               |  |  |  | 439     |        |  |  | 2.35        |     |  |  | 45             |     |  |  | 47                  |  |  |  | 199                          | 
|Global Corporate Banking |  |  | 5.5                |  |  |  | 10      |        |  |  | 0.18        |     |  |  | 330            |     |  |  | 28                  |  |  |  | 33                           | 
|Total corporate lending  |  |  | 26.5               |  |  |  | 604     |        |  |  | 2.28        |     |  |  | 51             |     |  |  | 118                 |  |  |  | 307                          | 



|(1) | We define NPLs in the Credit risk management section.
|--- | -------------------------------------------------------

|(2) | All NPLs continue accruing interest.
|--- | ------------------------------------

|(3) | NPLs as a percentage of customer loans.
|--- | ---------------------------------------

|(4) | Impairment loss allowances as a percentage of NPLs. Impairment loss allowances relate to early arrears and performing assets (i.e. the IBNO provision) as well as NPLs, so the ratio can exceed 100%.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc53



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##### Table of Contents



Annual Report 2016

Risk review









Credit risk  Retail Banking



| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  |  |  | 
| |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  |  |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |  | 
| |  | Overview                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |  | 
| |  | We offer a full range of retail products and services through our branches, the internet, digital devices and over the phone, as well
as through intermediaries.  Credit risk management
In this section, we explain how we manage and mitigate credit risk. 
Credit risk review In this section, we analyse our credit risk exposures and how
they are performing. We also focus on forbearance and portfolios of particular interest. Our main portfolios are: |  |  |  | Residential mortgages  This is our largest portfolio. We lend to customers of good credit quality (prime lending). Most
of our mortgages are for owner-occupied homes. We also have some buy-to-let mortgages where we focus on non-professional landlords with small portfolios. 
Business banking  This comprises small business customers with annual turnover up to £6.5m per annum.
 Consumer finance  This includes financing for cars, vans, motorbikes and caravans 
so long as they are privately bought.  Other unsecured lending This includes
personal loans, credit cards and bank account overdrafts. |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  |  |  | 

RETAIL BANKING  CREDIT RISK MANAGEMENT



|     |  |      |  |                                                                                          
|---- |  | ---- |  | -----------------------------------------------------------------------------------------
|LOGO |  | LOGO |  | For more on our approach to credit
risk at a Santander UK group level, see pages 45 to 46

In Retail Banking, our customers are individuals and small businesses. We have a high volume of customers and transactions and they share
similar credit characteristics, like their credit score or LTV. As a result, we manage our overall credit risk by looking at portfolios or groups of customers who share similar credit characteristics. Where we take this approach, we call them
standardised customers.

Exactly how we group customers into segments depends on the portfolio and the stage of the credit risk lifecycle. For example,
we may segment customers at origination by their credit score. For accounts in arrears, we may segment them by how fast they improve or worsen. We regularly review each segment compared with our expectations for its performance, budget or limit.

1. Risk strategy and planning

For more on how we set our risk strategy
and plans for Retail Banking, see the Santander UK group level  credit risk management section.

2. Assessment and origination

We undertake a thorough risk assessment to make sure customers can meet their obligations before we approve a credit application. We do this mainly by looking at
affordability and the customers credit profile:

Affordability

We
take proportionate steps to establish that the customer will be able to make all the repayments on the loan over its full term. As part of this, we assess the risk that they will not pay us back. We do this by a series of initial affordability and
credit risk assessments. If the loan is secured, we assess affordability by reviewing the customers income and spending, their other credit commitments, and what would happen if interest rates went up. For unsecured products that have fixed
interest rates, affordability reviews for these products do not consider the impact of increases in interest rates. We regularly review the way we calculate affordability and refine it when we need to. This can be due to changes in regulations, the
economy or our risk profile.

Credit profile

We look at each
customers credit profile and signs of how reliable they are at repaying credit. When they apply, we use the data they give us, and:

| | Credit policy: these are our rules and guidelines. We review them regularly to make sure our decisions are consistent and fair, and align to the risk profile we want. For secured lending, we look at the property
and the LTV as well as the borrower
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Credit scores: these are based on statistics about the factors that make people fail to pay off debt. We use these to build models of what is likely to happen in the future. These models give a credit score to
the customer or the loan they want, to show how likely it is to be repaid. We regularly review these models
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Credit reference agencies: data from credit reference agencies about how the borrower has handled credit in the past
|- | --------------------------------------------------------------------------------------------------------------------

| | Other Santander accounts: we look at how the customer is using their other accounts with us.
|- | --------------------------------------------------------------------------------------------





54Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





How we make the decision

Many of our decisions are automated as our risk systems contain data about affordability and credit history. We tailor the process and how we assess the application based
on the type of product being taken. More complex transactions often need greater manual assessment. This means we have to rely more on our credit underwriters skill and experience in making the decision. This is particularly true for secured
lending, where we might need to do more checks on the customers income, or get a property valuation from an approved surveyor, for example.

Credit risk
mitigation

The types of credit risk mitigation, including collateral, across each of our portfolios is:



|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|--------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                      | 
|Portfolio             |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                      | 
|Residential mortgages |  | Collateral is in the form of a first legal charge over the
property. Before we grant a mortgage, we get an approved surveyor to value the property. We have our own guidelines for valuations, which build on guidance from the Royal Institution of Chartered Surveyors (RICS). For remortgages and some loans
where the LTV is 75% or less, we might use an automated valuation instead.                                                                                                                                                                                                                                                        
|                      | 
|Business banking      |  | Includes secured and unsecured lending. We can take mortgage
debentures as collateral if the business is incorporated. These are charges over a companys assets. We can also take guarantees, but we do not treat them as collateral, and we do not put a cash value on them unless they are secured against a
tangible asset. We base our lending decision on the customers trading cash flow. If they default, we will work with defaulted customers to consider debt restructuring options. We generally do not enforce our security over their assets except
as a last resort. In which case, we might appoint an administrator or receiver.
|                      | 
|Consumer finance      |  | Collateral is in the form of legal ownership of the vehicle
for most consumer finance loans, with the customer being the registered keeper. Only a very small proportion of the vehicle consumer finance business is underwritten as a personal loan. In these cases there is no collateral or security tied to the
loan. We use a leading vehicle valuation company to assess the LTV at the proposal stage.                                                                                                                                                                                                                                     
|                      | 
|Unsecured lending     |  | Unsecured lending means there is no collateral or security tied to the loan that can be used
to mitigate any potential loss if the customer does not pay us back.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

3. Monitoring

Our risk assessment does not
end once we have made the decision to lend. We monitor credit risk across the credit risk lifecycle, mostly using IT systems. There are three main parts:

| | Behaviour scoring: we use statistical models that help to predict whether the customer will have problems repaying, based on data about how they use their accounts. Our models also use data from credit reference
agencies
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Credit reference agencies: we often use data from agencies on how the borrower is handling credit from other lenders in our behaviour scoring models. We also buy services like proprietary scorecards or account
alerts, which tell us as soon as the customer does something that concerns us (such as missing a payment to another bank)
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Other Santander accounts: every month, we also look at how the customer is using their other accounts with us, so we can identify problems early.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------

The way we use this monitoring to manage risk varies by product. For revolving credit facilities like credit cards and overdrafts, it might lead us to raise or lower
credit limits. Our monitoring can also mean we change our minds about whether a product is still right for a customer. This can influence whether we approve an application for refinancing. In these ways we can balance our customers needs and
their ability to manage credit.

For secured lending, our monitoring also needs to take account of changes in property prices. We estimate the
propertys current value every three months. We use statistical models based on recent sales prices and valuations in that local area. A lack of data can mean our confidence in the models valuation drops below a certain minimum level, and
in that case we use the House Price Index (HPI) instead.

If we find evidence that a customer is in financial difficulties, we contact them about arrears management
including forbearance, which we explain in more detail below.

4. Arrears management

We have several strategies for managing arrears and these can be used before the customer has formally defaulted, or as early as the day after a missed payment. We assess
the problems a customer is having, so we can offer them the right help to bring their account up to date as soon as possible.

The strategy we use
depends on the risk and the customers circumstances. We provide a range of tools to assist customers in reaching an affordable and acceptable solution. That could mean visiting the customer, offering debt counselling by a third party, or
paying off the debt using money from their other accounts with us (where we have the right to do so).

Forbearance

If a customer lets us know they are having financial difficulty, we aim to come to an arrangement with them before they actually default. Their problems can be the result
of losing their job, falling ill, a relationship breaking down, or the death of someone close to them.

Forbearance is mainly for mortgages and unsecured loans.





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Annual Report 2016

Risk review









Forbearance options include extending the term to make monthly payments more manageable, or reducing payment obligations but this is considered on a case by case basis to
ensure we continue to lend responsibly, help customers be able to continue to afford their payments and is undertaken in line with risk policies we have in place. We may offer the following types of forbearance. We only do this if our assessments
indicate the customer can meet the revised payments:



|                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|---------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                             | 
|Action                       |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                             | 
|Capitalisation               |  | We offer two main types, which are often combined with term
extensions and, in the past, interest-only concessions: 
  If the customer cannot afford to increase their monthly payment enough to pay off their arrears in a reasonable
time, but has been making their monthly payments (usually for at least six months), then we can add the arrears to the mortgage balance. 
  We can also add to the mortgage balance at the time of forbearance unpaid property charges which are due to a
landlord and which we pay on behalf of the customer to avoid the lease being forfeited.                                                                                                                                                                                                                                          
|                             | 
|Term extension               |  | We can extend the term of the loan, making each monthly
payment smaller. At a minimum, we expect the customer to pay the interest in the short-term and have a realistic chance of repaying the full balance in the long-term. We may offer this option if the customer is up-to-date with their payments, but
showing signs of financial difficulties. For mortgages, the customer must also meet our policies for maximum loan term and age when they finish repaying (usually no more than 75).                                                                                                                                                                                                                                                                                                                                  
|                             | 
|Interest-only                |  | In the past, if it was not possible or affordable for a
customer to have a term extension, we may have agreed to let them pay only the interest on the loan for a short time  usually less than a year. We only agreed to this where we believed their financial problems were temporary and they were
likely to recover. Since March 2015 we no longer provide this option as a concession. Instead, interest-only has only been offered as a short-term standard collections arrangement. We now record any related shortfall in monthly payments as arrears
and report them to the credit reference agencies. As a result, we no longer classify new interest-only arrangements agreed since March 2015 as forbearance. We continue to manage and report all interest-only arrangements offered before this date as
forbearance.
|                             | 
|Reduced payment
arrangements |  | We can suspend overdraft fees and charges while the customer keeps to a plan to reduce their overdraft each month.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  

When we agree to any forbearance, we review our impairment loss allowances for them. These accounts may stay in our performing portfolio
but we report them separately as forborne.

If an account is performing when we agree forbearance, we automatically classify it as forborne. We only classify it as
NPL once it meets our standard criteria for NPL. If an account is in NPL when we agree forbearance, we keep it in the NPL category until the customer repays all the arrears, including those that existed before forbearance started.

Other changes in contract terms

Apart from forbearance, we have sometimes
changed the contract terms to keep a good relationship with a customer and the customer outcome. These customers showed no signs of financial difficulties at the time, so we do not classify the contract changes as forbearance, and most of the loans
were repaid without any problems. We do not classify insolvency solutions for credit card customers as forbearance. This is because they are set by regulations and codes of practice, not by our policy.

5. Debt recovery

When a customer cannot or will not keep to an agreement for
paying off their arrears, we will consider recovery options. We only do this once we have tried to get the account back in order. To recover what we are owed, we may use a debt collection agency, sell the debt to another company, or take the
customer to court.

For secured retail loans (mostly mortgages), we can delay legal action. That can happen if the customer shows evidence that they will be able to
pay off the mortgage or pay back the arrears. We aim to repossess only as a last resort when other options have been exhausted or if necessary to protect the property from damage or third party claims.

We make sure our estimated losses from repossessed properties are realistic by getting two independent valuations on each property, as well as the estimated cost of
selling it. These form the basis of our impairment loss allowance calculations. Where we do enforce the possession of properties held as collateral, we use external agents to realise the value and settle the debt. During this process we do not own
the property but we do administer the sale process. Any surplus funds are returned to the borrower or are otherwise dealt with in accordance with insolvency regulations.

Risk measurement and control

Retail Banking involves managing large numbers
of accounts, so it produces a huge amount of data. This allows us to take a more analytical and data intense approach to measuring risk. This is reflected in the wide range of statistical models we use across the credit risk lifecycle. We use:

| | Risk strategy and planning: econometric models
|- | ----------------------------------------------

| | Assessment and origination: application scorecards, and attrition, pricing, impairment and capital models
|- | ---------------------------------------------------------------------------------------------------------

| | Monitoring: behavioural scorecards and profitability models
|- | -----------------------------------------------------------

| | Arrears management: models to estimate the proportion of cases that will result in possession (known as roll rates)
|- | -------------------------------------------------------------------------------------------------------------------

| | Debt recovery: recovery models.
|- | -------------------------------

We assess and review our impairment loss allowances regularly and have them
independently reviewed. We look at a number of factors, including the cash flow available to service debt. We also use an agency to value collateral  mostly mortgages.





56Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





RETAIL BANKING  CREDIT RISK REVIEW

RESIDENTIAL MORTGAGES

We offer mortgages to people who
want to buy a property, and offer additional borrowing (known as further advances) to existing mortgage customers. The property must be in the UK, except for a small amount of lending in the Isle of Man and Jersey.

Borrower profile

In this table, home movers
include both existing customers moving house and taking out a new mortgage with us, and customers who switch their mortgage to us when they move house. Remortgagers are external customers who are remortgaging with us. We have not
included internal remortgages, further advances and any flexible mortgage drawdowns in the new business figures.



|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |       |         |  |   |  |     |              |  |  |    |  |  |      |         |  |  |  |     |         |  |  |   |    |  |      |         |  |    |  |     |        |  |  |  |    |  |  |         |  |  |  |     | 
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----- | ------- |  | - |  | --- | ------------ |  |  | -- |  |  | ---- | ------- |  |  |  | --- | ------- |  |  | - | -- |  | ---- | ------- |  | -- |  | --- | ------ |  |  |  | -- |  |  | ------- |  |  |  | --- | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  | Stock |         |  |   |  |     | New business | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  | 2016  |         |  |   |  |     | 2015(1)      |  |  |    |  |  | 2016 |         |  |  |  |     | 2015(1) | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  | £m    |         |  | % |  |     |              |  |  | £m |  |  | %    |         |  |  |  |     | £m      |  |  | % |    |  |      |         |  | £m |  |     | %      | 
|First-time buyers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  |       | 29,143  |  |   |  | 19  |              |  |  |    |  |  |      | 29,659  |  |  |  | 19  |         |  |  |   |    |  |      | 4,193   |  |    |  | 17  |        |  |  |  |    |  |  | 4,493   |  |  |  | 18  | 
|Home movers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |       | 68,158  |  |   |  | 44  |              |  |  |    |  |  |      | 67,130  |  |  |  | 45  |         |  |  |   |    |  |      | 11,072  |  |    |  | 45  |        |  |  |  |    |  |  | 12,319  |  |  |  | 49  | 
|Remortgagers                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  |       | 50,325  |  |   |  | 33  |              |  |  |    |  |  |      | 51,074  |  |  |  | 33  |         |  |  |   |    |  |      | 7,092   |  |    |  | 29  |        |  |  |  |    |  |  | 6,023   |  |  |  | 24  | 
|Buy-to-let                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |  |       | 6,648   |  |   |  | 4   |              |  |  |    |  |  |      | 4,956   |  |  |  | 3   |         |  |  |   |    |  |      | 2,212   |  |    |  | 9   |        |  |  |  |    |  |  | 2,393   |  |  |  | 9   | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |       | 154,274 |  |   |  | 100 |              |  |  |    |  |  |      | 152,819 |  |  |  | 100 |         |  |  |   |    |  |      | 24,569  |  |    |  | 100 |        |  |  |  |    |  |  | 25,228  |  |  |  | 100 | 
|(1)  The 2015
numbers in this table are unaudited.  2016 compared to 2015(unaudited) The mortgage borrower mix remained broadly unchanged, reflecting
underlying stability in target market segments, product pricing and our distribution strategy. 
We continued to build our buy-to-let book by focusing on non-professional landlords, as this segment is closely aligned with residential mortgages and accounts for the
majority of the volume in the buy-to-let market. In 2016 we completed 12,400 buy-to-let mortgages, representing 9% of the value of our new business flow, at an average LTV of 67%. In line with the market, we saw a spike in buy-to-let mortgages ahead
of the April 2016 stamp duty increase. Buy-to-let lending was lower in the quarters following the stamp duty increase, but remained positive. 
In addition to the new business included in the table above, there were £18.1bn (2015: £18.0bn) of internal remortgages where we kept existing customers with
maturing products on new mortgages. We also provided £1.2bn (2015: £1.3bn) of further advances and flexible mortgage drawdowns. 
Interest rate profile 
The interest rate profile of our mortgage asset stock was: | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |       |         |  |   |  |     |              |  |  |    |  |  |      |         |  |  |  |     | 2016    |  |  |   |    |  | 2015 |        
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |       |         |  |   |  |     |              |  |  |    |  |  |      |         |  |  |  |     | £m      |  |  | % |    |  |      |         |  | £m |  |     | %      | 
|Fixed rate                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |  |       |         |  |   |  |     |              |  |  |    |  |  |      |         |  |  |  |     |         |  |  |   |    |  |      | 91,817  |  |    |  | 59  |        |  |  |  |    |  |  | 82,570  |  |  |  | 54  | 
|Variable rate                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |       |         |  |   |  |     |              |  |  |    |  |  |      |         |  |  |  |     |         |  |  |   |    |  |      | 33,627  |  |    |  | 22  |        |  |  |  |    |  |  | 34,402  |  |  |  | 23  | 
|Standard Variable Rate (SVR)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  |       |         |  |   |  |     |              |  |  |    |  |  |      |         |  |  |  |     | 28,830  |  |  |   | 19 |  |      |         |  |    |  |     | 35,847 |  |  |  | 23 | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |       |         |  |   |  |     |              |  |  |    |  |  |      |         |  |  |  |     |         |  |  |   |    |  |      | 154,274 |  |    |  | 100 |        |  |  |  |    |  |  | 152,819 |  |  |  | 100 | 

2016 compared to 2015(unaudited)

SVR attrition was driven by customer refinancing, either internally or through remortgaging,
repayments and customer sentiment over expected lower for longer interest rates. The SVR attrition was £7,017m (2015: £8,014m).





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Annual Report 2016

Risk review









Geographical distribution

The Santander UK new business
data in these tables cover each of the years we show. The Council of Mortgage Lenders (CML) new business data for 2016 covers the nine months ended 30 September 2016 because that was the only data available for 2016 when we went to print.
The percentages are calculated on a value weighted basis.



|                               |  |              |     |  |                 |  |      |              |  |              |     |  |                 |  |  |              |     |  |              |  |     |  |  |  |     | 
|------------------------------ |  | ------------ | --- |  | --------------- |  | ---- | ------------ |  | ------------ | --- |  | --------------- |  |  | ------------ | --- |  | ------------ |  | --- |  |  |  | --- | 
|UK region                      |  | 2016         |     |  |                 |  | 2015 |             
|                               |  | Santander UK |     |  | CML (unaudited) |  |      |              |  | Santander UK |     |  | CML (unaudited) | 
|                               |  | Stock        |     |  | New business    |  |      | New business |  |              |     |  | Stock           |  |  | New business |     |  | New business | 
|                               |  | %            |     |  | %               |  |      | %            |  |              |     |  | %               |  |  | %            |     |  | %            | 
|London                         |  |              | 24  |  |                 |  | 27   |              |  |              | 18  |  |                 |  |  |              | 23  |  |              |  | 28  |  |  |  | 21  | 
|Midlands and East Anglia       |  |              | 13  |  |                 |  | 13   |              |  |              | 17  |  |                 |  |  |              | 13  |  |              |  | 13  |  |  |  | 16  | 
|North                          |  |              | 15  |  |                 |  | 12   |              |  |              | 17  |  |                 |  |  |              | 15  |  |              |  | 12  |  |  |  | 16  | 
|Northern Ireland               |  |              | 2   |  |                 |  | 1    |              |  |              | 1   |  |                 |  |  |              | 3   |  |              |  | 1   |  |  |  | 1   | 
|Scotland                       |  |              | 5   |  |                 |  | 3    |              |  |              | 7   |  |                 |  |  |              | 5   |  |              |  | 4   |  |  |  | 7   | 
|South East excluding London    |  |              | 30  |  |                 |  | 34   |              |  |              | 28  |  |                 |  |  |              | 30  |  |              |  | 32  |  |  |  | 27  | 
|South West and Wales and other |  |              | 11  |  |                 |  | 10   |              |  |              | 12  |  |                 |  |  |              | 11  |  |              |  | 10  |  |  |  | 12  | 
|                               |  |              | 100 |  |                 |  | 100  |              |  |              | 100 |  |                 |  |  |              | 100 |  |              |  | 100 |  |  |  | 100 | 

2016 compared to 2015(unaudited)

At 31 December 2016, the lending profile of the portfolio continued to represent a geographical footprint across the UK, while continuing to reflect a concentration
around London and the South East.

Larger loans

The mortgage asset stock
of larger loans was:



|                                                                                                                                                                                                                                                                           |  |                             |        |  |      |  |        |  |  |           |  |  |           |  |  |  |         | 
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------- | ------ |  | ---- |  | ------ |  |  | --------- |  |  | --------- |  |  |  | ------- | 
|Stock  individual mortgage loan size                                                                                                                                                                                                                                      |  | South East including London |        |  |      |  | UK     | 
|                                                                                                                                                                                                                                                                           |  | 2016                        |        |  | 2015 |  |        |  |  | 2016      |  |  | 2015      | 
|                                                                                                                                                                                                                                                                           |  |                             | £m     |  |      |  | £m     |  |  |           |  |  | £m        |  |  |  | £m      | 
|<£0.25m                                                                                                                                                                                                                                                                    |  |                             | 48,355 |  |      |  | 50,325 |  |  |           |  |  | 110,415   |  |  |  | 114,555 | 
|£0.25m£0.50m                                                                                                                                                                                                                                                              |  |                             | 25,040 |  |      |  | 21,848 |  |  |           |  |  | 32,871    |  |  |  | 29,060  | 
|£0.50m£1.0m                                                                                                                                                                                                                                                               |  |                             | 8,438  |  |      |  | 6,828  |  |  |           |  |  | 9,668     |  |  |  | 7,922   | 
|£1.0m£2.0m                                                                                                                                                                                                                                                                |  |                             | 1,099  |  |      |  | 1,060  |  |  |           |  |  | 1,161     |  |  |  | 1,123   | 
|>£2.0m                                                                                                                                                                                                                                                                     |  |                             | 157    |  |      |  | 155    |  |  |           |  |  | 159       |  |  |  | 159     | 
|At 31 December 2016, there were 65 (2015: 64) individual
mortgages greater than £2m. During the year there were 13 (2015: 25) new individual mortgages greater than £2m. 
Average loan size for new business 
The average loan size for new business in 2016 and 2015 was: | 
|UK region                                                                                                                                                                                                                                                                  |  |                             |        |  |      |  |        |  |  | 2016 £000 |  |  | 2015 £000 | 
|South East including London                                                                                                                                                                                                                                                |  |                             |        |  |      |  |        |  |  |           |  |  | 264       |  |  |  | 248     | 
|Rest of the UK                                                                                                                                                                                                                                                             |  |                             |        |  |      |  |        |  |  |           |  |  | 144       |  |  |  | 136     | 
|UK as a whole                                                                                                                                                                                                                                                              |  |                             |        |  |      |  |        |  |  |           |  |  | 198       |  |  |  | 186     | 

The loan-to-income multiple of mortgage lending during the year, representing average earnings of new business at inception, was 3.16
(2015: 3.10).





58Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Loan-to-value analysis

This table shows the LTV distribution for mortgage asset stock, NPL stock and new business. We used our estimate of the propertys value at the balance sheet date.
We have included fees added to the loan in the calculation. If the product is on flexible terms, the calculation only includes the drawn loan amount, not undrawn limits.



|                                                 |  |         |           |  |             |  |         |                |  |  |          |  |           |  |  |             |           |  |                |  |         |  |  |  |          | 
|------------------------------------------------ |  | ------- | --------- |  | ----------- |  | ------- | -------------- |  |  | -------- |  | --------- |  |  | ----------- | --------- |  | -------------- |  | ------- |  |  |  | -------- | 
|LTV                                              |  | 2016    |           |  |             |  | 2015    |               
|                                                 |  |         |           |  | of which:   |  |         |                |  |  |          |  | of which: | 
|                                                 |  | Stock
% |           |  | NPL stock
% |  |         | New business
% |  |  |          |  | Stock
%   |  |  | NPL stock
% |           |  | New business
% | 
|<50%                                             |  |         | 46        |  |             |  | 39      |                |  |  | 17       |  |           |  |  |             | 40        |  |                |  | 33      |  |  |  | 16       | 
|>5075%                                          |  |         | 41        |  |             |  | 36      |                |  |  | 43       |  |           |  |  |             | 42        |  |                |  | 36      |  |  |  | 41       | 
|>7580%                                          |  |         | 5         |  |             |  | 5       |                |  |  | 15       |  |           |  |  |             | 6         |  |                |  | 6       |  |  |  | 16       | 
|>8085%                                          |  |         | 3         |  |             |  | 4       |                |  |  | 8        |  |           |  |  |             | 4         |  |                |  | 5       |  |  |  | 11       | 
|>8590%                                          |  |         | 2         |  |             |  | 3       |                |  |  | 10       |  |           |  |  |             | 3         |  |                |  | 4       |  |  |  | 12       | 
|>9095%                                          |  |         | 1         |  |             |  | 3       |                |  |  | 7        |  |           |  |  |             | 2         |  |                |  | 3       |  |  |  | 4        | 
|>95100%                                         |  |         | 1         |  |             |  | 2       |                |  |  |         |  |           |  |  |             | 1         |  |                |  | 3       |  |  |  |         | 
|>100% i.e. negative equity                       |  |         | 1         |  |             |  | 8       |                |  |  |         |  |           |  |  |             | 2         |  |                |  | 10      |  |  |  |         | 
|                                                 |  |         | 100       |  |             |  | 100     |                |  |  | 100      |  |           |  |  |             | 100       |  |                |  | 100     |  |  |  | 100      | 
|Collateral value of residential properties(1)(2) |  |         | £153,989m |  |             |  | £2,043m |                |  |  | £24,569m |  |           |  |  |             | £152,432m |  |                |  | £2,190m |  |  |  | £25,228m | 
|                                                 |  |         |           |  |             |  |        
|                                                 |  |         |           |  |             |  |         |                |  |  |          |  |           |  |  |             |           |  |                |  |         |  |  |  |          | 
|                                                 |  | %       |           |  | %           |  |         | %              |  |  |          |  | %         |  |  | %           |           |  | %              | 
|Simple average(3)LTV (indexed)                   |  |         | 43        |  |             |  | 46      |                |  |  | 65       |  |           |  |  |             | 45        |  |                |  | 50      |  |  |  | 65       | 
|Valuation weighted average(4)LTV (indexed)       |  |         | 39        |  |             |  | 40      |                |  |  | 60       |  |           |  |  |             | 41        |  |                |  | 44      |  |  |  | 60       | 



|(1) | Includes collateral against loans in negative equity of £1,588m at 31 December 2016 (2015: £2,285m).
|--- | ----------------------------------------------------------------------------------------------------

|(2) | The collateral value we have shown is limited to the balance of each associated individual loan. It does not include the impact of over-collateralisation (where the collateral has a higher value than the loan balance).
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Unweighted average of LTV of all accounts.
|--- | ------------------------------------------

|(4) | Total of all loan values divided by the total of all valuations.
|--- | ----------------------------------------------------------------

2016 compared to 2015(unaudited)

In 2016, we maintained our prudent lending criteria, with an average LTV of 65% on new lending (2015:
65%). Our lending with an LTV of over 85% accounted for 17% of new business flow (2015: 16%). Stock LTV was lower at 43% (2015: 45%).

At 31 December 2016, the
parts of the loans in negative equity which were effectively uncollateralised (before taking account of impairment loss allowances) reduced to £285m (2015: £387m).

Credit performance



|                                                   |  |        |         |  |         |  |         | 
|-------------------------------------------------- |  | ------ | ------- |  | ------- |  | ------- | 
|                                                   |  | 2016£m |         |  | 2015
£m | 
|Mortgage loans and advances to customers of which: |  |        | 154,274 |  |         |  | 152,819 | 
|Performing(1)                                      |  |        | 150,895 |  |         |  | 148,963 | 
|Early arrears:                                     |  |        | 1,269   |  |         |  | 1,604   | 
| 31 to 60 days                                    |  |        | 793     |  |         |  | 979     | 
| 61 to 90 days                                    |  |        | 476     |  |         |  | 625     | 
|NPLs:(2)(3)                                        |  |        | 2,110   |  |         |  | 2,252   | 
| By arrears                                       |  |        | 1,578   |  |         |  | 1,826   | 
| By bankruptcy                                    |  |        | 21      |  |         |  | 34      | 
| By maturity default                              |  |        | 316     |  |         |  | 263     | 
| By forbearance                                   |  |        | 160     |  |         |  | 83      | 
| By properties in possession (PIPs)               |  |        | 35      |  |         |  | 46      | 



|(1) | Excludes mortgages where the customer did not pay for between 31 and 90 days, arrears, bankruptcy, maturity default, forbearance and PIPs NPLs. Includes £2,959m of mortgages (2015: £3,486m) where the
customer did not pay for 30 days or less.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | We define NPLs in the Credit risk management section.
|--- | -------------------------------------------------------

|(3) | All NPLs are in the UK and continue accruing interest.
|--- | ------------------------------------------------------





Santander UK plc59



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##### Table of Contents



Annual Report 2016

Risk review









Non-performing loans and advances(1)



|                                                   |  |        |         |  |         |  |         | 
|-------------------------------------------------- |  | ------ | ------- |  | ------- |  | ------- | 
|                                                   |  | 2016£m |         |  | 2015
£m | 
|Mortgage loans and advances to customers of which: |  |        | 154,274 |  |         |  | 152,819 | 
|Early arrears                                      |  |        | 1,269   |  |         |  | 1,604   | 
|NPLs(2)                                            |  |        | 2,110   |  |         |  | 2,252   | 
|Impairment loss allowances                         |  |        | 279     |  |         |  | 424     | 
|                                                   |  |       
|                                                   |  |        |         |  |         |  |         | 
|                                                   |  | %      |         |  | %       | 
|Early arrears ratio(3)                             |  |        | 0.82    |  |         |  | 1.05    | 
|NPL ratio(4)                                       |  |        | 1.37    |  |         |  | 1.47    | 
|Coverage
ratio(5)                                  |  |        | 13      |  |         |  | 19      | 



|(1) | We define NPLs in the Credit risk management section.
|--- | -------------------------------------------------------

|(2) | All NPLs are in the UK and continue accruing interest.
|--- | ------------------------------------------------------

|(3) | Mortgages in early arrears as a percentage of mortgages.
|--- | --------------------------------------------------------

|(4) | Mortgage NPLs as a percentage of mortgages.
|--- | -------------------------------------------

|(5) | Impairment loss allowances as a percentage of NPLs.
|--- | ---------------------------------------------------

NPL movements in 2016

We analyse NPL movements in 2016 in the table below. Entries are loans which we have classified as NPL in the year and exclude Policy entries that
are due to definition changes. PIP sales are loans that have been legally discharged when we have sold the property, and include any written-off portion. Exits are loans that have been repaid (in full or in part), and loans
that have returned to performing status. Forbearance activity does not change the NPL status.



|                    |  |    |        |  
|------------------- |  | -- | ------ | -
|                    |  | £m |       
|At 1 January 2016   |  |    | 2,252  |  
|Entries             |  |    | 974    |  
|PIP sales           |  |    | (71    | )
|Exits               |  |    | (1,045 | )
|At 31 December 2016 |  |    | 2,110  |  

2016 compared to 2015(unaudited)

In 2016, mortgage NPLs decreased to £2,110m at 31 December 2016 (2015: £2,252m) and the NPL ratio decreased to 1.37% (2015: 1.47%). Lower NPL and
coverage ratios were driven by the improving quality of our mortgage portfolio, the continued rise in house prices, as well as an update to our mortgage model. There were no policy entries into NPLs in the year.





60Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Forbearance

Forbearance started in the year(1)

The balances that entered forbearance in 2016 and 2015 were:



|                                                                                                                                                                                                                                                                                                         |  |                    |       |  |                    |  |      |                   |  |      |       |  |           |  |  |                                 |       |  |  |  |     | 
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------ | ----- |  | ------------------ |  | ---- | ----------------- |  | ---- | ----- |  | --------- |  |  | ------------------------------- | ----- |  |  |  | --- | 
|                                                                                                                                                                                                                                                                                                         |  |                    |       |  | 2016               |  |      |                   |  | 2015 |      
|                                                                                                                                                                                                                                                                                                         |  |                    |       |  | £m                 |  |      | %                 |  |      |       |  | £m        |  |  | %                               |      
|Capitalisation                                                                                                                                                                                                                                                                                           |  |                    |       |  |                    |  | 330  |                   |  |      | 68    |  |           |  |  |                                 | 287   |  |  |  | 61  | 
|Term extension                                                                                                                                                                                                                                                                                           |  |                    |       |  |                    |  | 152  |                   |  |      | 32    |  |           |  |  |                                 | 167   |  |  |  | 35  | 
|Interest-only                                                                                                                                                                                                                                                                                            |  |                    |       |  |                    |  |     |                   |  |      |      |  |           |  |  |                                 | 19    |  |  |  | 4   | 
|                                                                                                                                                                                                                                                                                                         |  |                    |       |  |                    |  | 482  |                   |  |      | 100   |  |           |  |  |                                 | 473   |  |  |  | 100 | 
|(1)  The figures
reflect the forbearance activity in the year, regardless of whether there was any forbearance on the accounts before. 
Forbearance total position(1) 
The balances at 31 December 2016 and 2015, analysed by their payment status at the year-end and the forbearance we applied, were: | 
|                                                                                                                                                                                                                                                                                                         |  | Capitalisation
 £m |       |  | Term extension
 £m |  |      | Interest-only
 £m |  |      |       |  | Total
 £m |  |  | Impairment    loss allowances£m |      
|2016                                                                                                                                                                                                                                                                                                     |  |                    |       |  |                    |  |      |                   |  |      |       |  |           |  |  |                                 |       |  |  |  |     | 
|In arrears                                                                                                                                                                                                                                                                                               |  |                    | 293   |  |                    |  | 78   |                   |  |      | 226   |  |           |  |  |                                 | 597   |  |  |  | 24  | 
|Performing                                                                                                                                                                                                                                                                                               |  |                    | 466   |  |                    |  | 222  |                   |  |      | 481   |  |           |  |  |                                 | 1,169 |  |  |  | 7   | 
|                                                                                                                                                                                                                                                                                                         |  |                    | 759   |  |                    |  | 300  |                   |  |      | 707   |  |           |  |  |                                 | 1,766 |  |  |  | 31  | 
|Proportion of portfolio                                                                                                                                                                                                                                                                                  |  |                    | 0.5%  |  |                    |  | 0.2% |                   |  |      | 0.4%  |  |           |  |  |                                 | 1.1%  |  |  |  |     | 
|                                                                                                                                                                                                                                                                                                         |  |                    |       |  |                    | 
|2015                                                                                                                                                                                                                                                                                                     |  |                    |       |  |                    |  |      |                   |  |      |       |  |           |  |  |                                 |       |  |  |  |     | 
|In arrears                                                                                                                                                                                                                                                                                               |  |                    | 412   |  |                    |  | 123  |                   |  |      | 305   |  |           |  |  |                                 | 840   |  |  |  | 34  | 
|Performing                                                                                                                                                                                                                                                                                               |  |                    | 1,278 |  |                    |  | 711  |                   |  |      | 839   |  |           |  |  |                                 | 2,828 |  |  |  | 27  | 
|                                                                                                                                                                                                                                                                                                         |  |                    | 1,690 |  |                    |  | 834  |                   |  |      | 1,144 |  |           |  |  |                                 | 3,668 |  |  |  | 61  | 
|Proportion of portfolio                                                                                                                                                                                                                                                                                  |  |                    | 1.1%  |  |                    |  | 0.5% |                   |  |      | 0.7%  |  |           |  |  |                                 | 2.4%  |  |  |  |     | 



|(1) | We base forbearance type on the first forbearance on the accounts. Tables only show accounts that were open at the year-end.
|--- | ----------------------------------------------------------------------------------------------------------------------------

2016 compared to 2015(unaudited)

The forbearance started in 2016 increased slightly compared to 2015. We changed our forbearance policy in March 2015, so we no longer offer interest-only concessions to
customers in financial difficulties. Instead, we offer reduced repayment arrangements for a time. Their account stays on capital and interest terms and any shortfall in capital repayment is added to the arrears.

At 31 December 2016, the total stock of forbearance reduced by 52% to £1,766m (2015: £3,668m). This decrease was mainly due to the application of exit
criteria to our forbearance policy in 2016 as described in Forbearance in Credit risk management in the Credit risk  Santander UK group level section. Applying these exit criteria to our forbearance stock at
31 December 2015, the loans reported as forborne would reduce by £1,652m to £2,016m.

At 31 December 2016, the proportion of accounts in
forbearance for more than six months that had made their last six months contractual payments decreased slightly to 74% (2015: 85%). Accounts in forbearance that were performing decreased to £1.2bn or 66% by value (2015: £2.8bn or
77% by value) mainly due to the application of exit criteria as described above. The weighted average LTV of all accounts in forbearance was 36% (2015: 35%) compared to the weighted average portfolio LTV of 39% (2015: 41%).

At 31 December 2016, impairment loss allowances as a percentage of the overall mortgage portfolio were 0.18% (2015: 0.28%). The equivalent ratio for performing
accounts in forbearance was 0.60% (2015: 0.95%), and for accounts in arrears in forbearance was 4.02% (2015: 4.07%). The higher ratios for accounts in forbearance reflect the higher levels of impairment loss allowances we hold on these accounts.
This reflects the higher risk on them.

At 31 December 2016, the carrying value of mortgages classified as multiple forbearance increased to £128m (2015:
£98m).

Other changes in contract terms

At
31 December 2016, there were £5.1bn (2015: £5.7bn) of other mortgages on the balance sheet that we had modified since January 2008. We agreed these modifications in order to keep a good relationship with the customer. The customers
were not showing any signs of financial difficulty at the time, so we dont classify these changes as forbearance.

We keep the performance and profile of the
accounts under review. At 31 December 2016:

| | The average LTV was 35% (2015: 39%) and 94% (2015: 94%) of accounts had made their last six months contractual payments
|- | ------------------------------------------------------------------------------------------------------------------------

| | The proportion of accounts that were 90 days or more in arrears was 1.57% (2015: 1.60%).
|- | ----------------------------------------------------------------------------------------





Santander UK plc61



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##### Table of Contents



Annual Report 2016

Risk review









PORTFOLIOS OF PARTICULAR INTEREST

Introduction(unaudited)

We are mainly a
residential prime lender and we do not originate sub-prime or second charge mortgages. Despite that, some types of mortgages have higher risks and others stand out for different reasons. These are:



|                                                                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|---------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                 | 
|Product                                                          |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                 | 
|Interest-only loans and part interest-only, part repayment loans |  | With an interest-only mortgage, the customer pays the
interest every month but does not repay the money borrowed (the principal) until the end of the mortgage. Some mortgages have a part that is interest-only, with the rest being a normal repayment mortgage. Customers with part interest-only, part
repayment mortgages still have to pay back a lump sum at the end of their mortgage for the interest-only part. 
Since 2009, we have reduced the risk from new interest-only mortgages by lowering the maximum LTV (it has been 50% since 2012). When a customer plans to repay their
mortgage by selling the property, we now only allow that if they own more than a set proportion of the equity. 
Customers with interest-only mortgages have to make arrangements to repay the principal at the end of the mortgage. We have a strategy to make sure that we tell these
customers that they have to do this. We send them messages with their annual mortgage statements, and we run contact campaigns to encourage them to tell us how they plan to repay. We have done this for all customers whose mortgages mature before
2020, and we are extending these campaigns to those with later maturities.  If customers know they
will not be able to repay their mortgage in full when it ends, or if their mortgage has already passed the date when it should have ended, we talk to them. If we think it is in the customers interests (and they can afford it), we look at other
ways of managing it. That can mean turning the mortgage into a standard repayment one, and extending it. Or, if the customer is waiting for their means of repaying it (an investment plan or bonds, for example) to mature, it can just mean extending
it.
|                                                                 | 
|Flexible loans                                                   |  | Flexible mortgages allow customers to pay more or less than
their usual amount each month, or even to take payment holidays when they pay nothing at all. Customers do not have to take (or draw down) the whole loan all at once  so if they took out a mortgage big enough to allow them to build
a home extension after three years, they do not have to start paying interest on that extra money until they are ready to spend it. There are conditions on when and how much customers can draw down:
    There are often limits on how much can be
drawn down in any month     The customer
cannot be in payment arrears     The
customer cannot have insolvency problems, such as a county court judgement, bankruptcy, an individual voluntary arrangement, an administration order or a debt relief order. 
A customer can ask us to increase their credit limit (the total amount they are allowed to borrow on their mortgage), but that means we will go through our full standard
credit approval process. We can also lower the customers credit limit at any time, so it never goes above 90% of the propertys current market value. 
We no longer offer flexible loan products for new mortgages. 
We analyse the flexible loans portfolio to identify customers who might be using these facilities to self-forbear (such as regularly drawing down small amounts). If there
is any sign that the credit risk has significantly increased, we reflect this in our provision calculations.                                                                                                                                                                                                                                              
|                                                                 | 
|Loans with an LTV >100%                                          |  | Where the mortgage balance is more than the property is now
worth, we cannot recover the full value of the loan by repossessing and selling the property. This means there is a higher credit risk on these loans. In some cases, property prices have fallen, so mortgages we gave in the past with lower LTVs now
have LTVs greater than 100%. Before 2009, we sometimes allowed customers to borrow more than the price of the property.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                 | 
|Buy-to-let loans                                                 |  | Given that we have a relatively small share of the buy to let market, we believe that we still
have an opportunity to grow our presence in a controlled manner. We focus on non-professional landlords, as this segment is more closely aligned with residential mortgages and covers most of the buy-to-let market. Our policy is that buy-to-let
mortgages should finance themselves, with the rent covering the mortgage payments and other costs. Even so, there is always the risk that income from the property may not cover the costs  if the landlord cannot find tenants for a while, for
example.  In recent years, we refined our buy-to-let proposition to appeal to a wider catchment,
and we have improved our systems to cater for this segment. We have prudent lending criteria, and specific policies for buy-to-let. We will lend on up to five buy-to-let properties, to a maximum 75% LTV. The first applicant must earn a minimum basic
income of at least £25,000 per year, and we require evidence of income in all cases.  We
also use a buy-to-let affordability rate as part of our assessment about whether or not to lend. This means that the rental income must be at least 145% of the monthly mortgage interest payments when calculated using a stressed interest rate. During
the year we increased this from 125% to reflect the reduction in mortgage interest tax relief for higher rate tax paying landlords.                                                                                                                                                                                                                                                                                                          

The arrears performance of these mortgages has continued to be relatively stable with arrears and loss rates remaining low.





62Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Portfolios of particular interest loans  borrower profile(1)



|                                            |  |          |        |  |                 |  |       |  |  |          |  |  |                |  |  |  |       | 
|------------------------------------------- |  | -------- | ------ |  | --------------- |  | ----- |  |  | -------- |  |  | -------------- |  |  |  | ----- | 
|                                            |  | 2016     |        |  |                 |  | 2015  | 
|                                            |  | Stock
£m |        |  | New business
£m |  |       |  |  | Stock
£m |  |  | New business£m | 
|Full interest-only loans                    |  |          | 41,707 |  |                 |  | 3,404 |  |  |          |  |  | 44,050         |  |  |  | 4,178 | 
|Part interest-only, part repayment loans(2) |  |          | 14,535 |  |                 |  | 1,567 |  |  |          |  |  | 15,299         |  |  |  | 1,996 | 
|Flexible loans(3)                           |  |          | 16,853 |  |                 |  | 251   |  |  |          |  |  | 19,107         |  |  |  | 508   | 
|Loans with LTV >100%                        |  |          | 1,873  |  |                 |  |      |  |  |          |  |  | 2,672          |  |  |  |      | 
|Buy-to-let                                  |  |          | 6,648  |  |                 |  | 2,212 |  |  |          |  |  | 4,956          |  |  |  | 2,393 | 
|Interest-only and LTV >100%                 |  |          | 1,411  |  |                 |  |      |  |  |          |  |  | 1,980          |  |  |  | 1     | 



|(1) | Where a loan falls into more than one category, we have included it in all the categories that apply.
|--- | -----------------------------------------------------------------------------------------------------

|(2) | Mortgage balance includes both the interest-only part of £10,560m (2015: £10,918m) and the non-interest-only part of the loan.
|--- | ------------------------------------------------------------------------------------------------------------------------------

|(3) | Flexible loans new business consists of drawdowns under existing facilities. We no longer offer flexible loans for new mortgages.
|--- | ---------------------------------------------------------------------------------------------------------------------------------

2016 compared to 2015(unaudited)

In 2016, the value and proportion of interest-only loans together with part interest-only, part repayment loans reduced, reflecting our strategy to
manage down the overall exposure to this lending profile.

Buy-to-let lending in 2016 remained stable at 9% (2015: 9%) of new business as described in the
Borrower profile section. From a mortgage asset stock perspective, loans with a current LTV >100% at 31 December 2016 decreased to 1% (2015: 2%) driven by rising house prices.

Portfolios of particular interest loans  credit performance



|                   |  |  |          |  |                                   |  |                  |  |  |  |                                     |  |  |  |                |  |  |  |              |  |  |  |               |  |  |  |                  |    
|------------------ |  |  | -------- |  | --------------------------------- |  | ---------------- |  |  |  | ----------------------------------- |  |  |  | -------------- |  |  |  | ------------ |  |  |  | ------------- |  |  |  | ---------------- | ---
|                   |  |  |          |  | Segment of particular interest(1) |  |                  |  | 
|                   |  |  | Total
£m |  |                                   |  | Interest-only £m |  |  |  | Part interest-only,part repayment£m |  |  |  | Flexible(2) £m |  |  |  | LTV >100%
£m |  |  |  | Buy-to-let
£m |  |  |  | Otherportfolio£m | (3)
|2016               |  |  |          |  |                                   |  |                  |  |  |  |                                     |  |  |  |                |  |  |  |              |  |  |  |               |  |  |  |                  |    
|Mortgage portfolio |  |  | 154,274  |  |                                   |  | 41,707           |  |  |  | 14,535                              |  |  |  | 16,853         |  |  |  | 1,873        |  |  |  | 6,648         |  |  |  | 90,570           |    
|Performing         |  |  | 150,895  |  |                                   |  | 40,185           |  |  |  | 14,066                              |  |  |  | 16,472         |  |  |  | 1,661        |  |  |  | 6,621         |  |  |  | 89,483           |    
|Early arrears:     |  |  |          |  |                                   |  |                  |  |  |  |                                     |  |  |  |                |  |  |  |              |  |  |  |               |  |  |  |                  |    
| 31 to 60 days    |  |  | 793      |  |                                   |  | 360              |  |  |  | 111                                 |  |  |  | 71             |  |  |  | 33           |  |  |  | 7             |  |  |  | 314              |    
| 61 to 90 days    |  |  | 476      |  |                                   |  | 224              |  |  |  | 70                                  |  |  |  | 45             |  |  |  | 22           |  |  |  | 2             |  |  |  | 191              |    
|NPLs               |  |  | 2,110    |  |                                   |  | 938              |  |  |  | 288                                 |  |  |  | 265            |  |  |  | 157          |  |  |  | 18            |  |  |  | 582              |    
|NPL ratio          |  |  | 1.37%    |  |                                   |  | 2.25%            |  |  |  | 1.98%                               |  |  |  | 1.57%          |  |  |  | 8.38%        |  |  |  | 0.27%         |  |  |  | 0.64%            |    
|PIPs               |  |  | 35       |  |                                   |  | 15               |  |  |  | 7                                   |  |  |  | 4              |  |  |  | 13           |  |  |  | 1             |  |  |  | 9                |    
|                   |  |  |          |  |                                   |  |                 
|2015               |  |  |          |  |                                   |  |                  |  |  |  |                                     |  |  |  |                |  |  |  |              |  |  |  |               |  |  |  |                  |    
|Mortgage portfolio |  |  | 152,819  |  |                                   |  | 44,050           |  |  |  | 15,299                              |  |  |  | 19,107         |  |  |  | 2,672        |  |  |  | 4,956         |  |  |  | 84,786           |    
|Performing         |  |  | 148,963  |  |                                   |  | 42,280           |  |  |  | 14,742                              |  |  |  | 18,711         |  |  |  | 2,358        |  |  |  | 4,929         |  |  |  | 83,537           |    
|Early arrears:     |  |  |          |  |                                   |  |                  |  |  |  |                                     |  |  |  |                |  |  |  |              |  |  |  |               |  |  |  |                  |    
| 31 to 60 days    |  |  | 979      |  |                                   |  | 441              |  |  |  | 143                                 |  |  |  | 81             |  |  |  | 48           |  |  |  | 7             |  |  |  | 382              |    
| 61 to 90 days    |  |  | 625      |  |                                   |  | 289              |  |  |  | 87                                  |  |  |  | 52             |  |  |  | 38           |  |  |  | 5             |  |  |  | 238              |    
|NPLs               |  |  | 2,252    |  |                                   |  | 1,040            |  |  |  | 327                                 |  |  |  | 263            |  |  |  | 228          |  |  |  | 15            |  |  |  | 629              |    
|NPL ratio          |  |  | 1.47%    |  |                                   |  | 2.36%            |  |  |  | 2.14%                               |  |  |  | 1.38%          |  |  |  | 8.53%        |  |  |  | 0.30%         |  |  |  | 0.74%            |    
|PIPs               |  |  | 46       |  |                                   |  | 23               |  |  |  | 9                                   |  |  |  | 6              |  |  |  | 22           |  |  |  | 1             |  |  |  | 9                |    



|(1) | Where a loan falls into more than one category, we have included it in all the categories that apply. As a result, the sum of the mortgages in the segments of particular interest and the other portfolio does not agree
to the total mortgage portfolio.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Includes legacy Alliance & Leicester flexible loans that work in a more limited way than our current Flexi loan product.
|--- | ------------------------------------------------------------------------------------------------------------------------

|(3) | Includes other loans that are not in any segment of particular interest.
|--- | ------------------------------------------------------------------------





Santander UK plc63



---

##### Table of Contents



Annual Report 2016

Risk review









Portfolios of particular interest loans  interest only sub analysis(unaudited)

Full interest-only maturity profile



|                                                      |  |               |     |  |                 |  |       |                    |  |  |                     |  |  |                          |        |  |           |  |        |  |  |  |        | 
|----------------------------------------------------- |  | ------------- | --- |  | --------------- |  | ----- | ------------------ |  |  | ------------------- |  |  | ------------------------ | ------ |  | --------- |  | ------ |  |  |  | ------ | 
|                                                      |  | Termexpired£m |     |  | Within 2years£m |  |       | Between2-5 years£m |  |  | Between5-15 years£m |  |  | Greater than15 years
£m  |        |  | Total
 £m | 
|2016                                                  |  |               |     |  |                 |  |       |                    |  |  |                     |  |  |                          |        |  |           |  |        |  |  |  |        | 
|Full interest-only portfolio                          |  |               | 506 |  |                 |  | 1,884 |                    |  |  | 3,308               |  |  |                          | 21,154 |  |           |  | 14,855 |  |  |  | 41,707 | 
|of which value weighted average LTV (indexed) is >75% |  |               | 36  |  |                 |  | 241   |                    |  |  | 239                 |  |  |                          | 2,483  |  |           |  | 1,957  |  |  |  | 4,956  | 
|                                                      |  |               |     |  |                 | 
|2015                                                  |  |               |     |  |                 |  |       |                    |  |  |                     |  |  |                          |        |  |           |  |        |  |  |  |        | 
|Full interest-only portfolio                          |  |               | 429 |  |                 |  | 1,840 |                    |  |  | 3,464               |  |  |                          | 20,601 |  |           |  | 17,716 |  |  |  | 44,050 | 
|of which value weighted average LTV (indexed) is >75% |  |               | 30  |  |                 |  | 264   |                    |  |  | 382                 |  |  |                          | 3,137  |  |           |  | 3,714  |  |  |  | 7,527  | 
|                                                      |  |               |     |  |                 | 
|Part interest-only, part repayment maturity profile   |  |               |     |  |                 |  |       |                    |  |  |                     |  |  |                          |        |  |           |  |        |  |  |  |        | 
|                                                      |  | Termexpired£m |     |  | Within 2years£m |  |       | Between2-5 years£m |  |  | Between5-15 years£m |  |  | Greater than
15 years £m |        |  | Total
 £m | 
|2016                                                  |  |               |     |  |                 |  |       |                    |  |  |                     |  |  |                          |        |  |           |  |        |  |  |  |        | 
|Part interest-only, part repayment portfolio          |  |               | 7   |  |                 |  | 230   |                    |  |  | 722                 |  |  |                          | 6,237  |  |           |  | 7,339  |  |  |  | 14,535 | 
|of which value weighted average LTV (indexed) is >75% |  |               |    |  |                 |  | 7     |                    |  |  | 24                  |  |  |                          | 529    |  |           |  | 851    |  |  |  | 1,411  | 
|                                                      |  |               |     |  |                 | 
|2015                                                  |  |               |     |  |                 |  |       |                    |  |  |                     |  |  |                          |        |  |           |  |        |  |  |  |        | 
|Part interest-only, part repayment portfolio          |  |               | 5   |  |                 |  | 230   |                    |  |  | 726                 |  |  |                          | 6,231  |  |           |  | 8,107  |  |  |  | 15,299 | 
|of which value weighted average LTV (indexed) is >75% |  |               |    |  |                 |  | 9     |                    |  |  | 30                  |  |  |                          | 642    |  |           |  | 1,301  |  |  |  | 1,982  | 

2016 compared to 2015

At
31 December 2016, interest-only loans, part interest-only, part repayment loans, and loans with an LTV >100% had a higher than average NPL ratio. However, NPLs for these portfolios reduced in 2016 in line with wider portfolio trends.

For full interest-only mortgages, of the total £506m that was term expired at 31 December 2016, 92% continued to pay the interest due under the expired
contract terms. Of the £822m that matured in 2016:

| | £448m was subsequently repaid
|- | -----------------------------

| | £nil was refinanced under normal credit terms
|- | ---------------------------------------------

| | £39m was refinanced under forbearance arrangements
|- | --------------------------------------------------

| | £335m remained unpaid and was classified as term expired at 31 December 2016.
|- | -----------------------------------------------------------------------------

For part interest-only, part
repayment mortgages, of the £64m that matured in 2016:

| | £53m was subsequently repaid
|- | ----------------------------

| | £nil was refinanced under normal credit terms
|- | ---------------------------------------------

| | £7m was refinanced under forbearance arrangements
|- | -------------------------------------------------

| | £4m remained unpaid and was classified as term expired at 31 December 2016.
|- | ---------------------------------------------------------------------------

At 31 December 2016, there
were 103,213 (2015: 113,232) flexible mortgage customers, with undrawn facilities of £6,373m (2015: £6,608m) and a utilisation rate of 66% (2015: 68%). The portfolios value weighted LTV (indexed) was 31% (2015: 32%).

At 31 December 2016 the stock of PIPs of £35m (2015: £46m) remained low.

Portfolios of particular interest loans  forbearance(1)(2)

The main types of forbearance arrangements which started in 2016 and 2015 were:



|                                                        |  |  |               |     |  |  |          |  |  |  |           |  |  |  |            | 
|------------------------------------------------------- |  |  | ------------- | --- |  |  | -------- |  |  |  | --------- |  |  |  | ---------- | 
|                                                        |  |  | Interest-only | (3) |  |  | Flexible |  |  |  | LTV >100% |  |  |  | Buy-to-let | 
|2016                                                    |  |  |               |     |  |  |          |  |  |  |           |  |  |  |            | 
|Total value                                             |  |  | £322m         |     |  |  | £56m     |  |  |  |          |  |  |  | £9m        | 
|Proportion of the total forbearance started in the year |  |  | 67%           |     |  |  | 12%      |  |  |  |          |  |  |  | 2%         | 
|                                                        |  |  |               |    
|2015                                                    |  |  |               |     |  |  |          |  |  |  |           |  |  |  |            | 
|Total value                                             |  |  | £290m         |     |  |  | £60m     |  |  |  |          |  |  |  | £8m        | 
|Proportion of the total forbearance started in the year |  |  | 61%           |     |  |  | 13%      |  |  |  |          |  |  |  | 2%         | 



|(1) | The figures reflect the amount of forbearance in the year, regardless of whether any forbearance on the accounts before.
|--- | ------------------------------------------------------------------------------------------------------------------------

|(2) | Where a loan falls into more than one category, we have included it in all the categories that apply.
|--- | -----------------------------------------------------------------------------------------------------

|(3) | Comprises full interest-only loans and part interest-only, part repayment loans.
|--- | --------------------------------------------------------------------------------

2016 compared to 2015(unaudited)

The forbearance started in
2016 was higher than in 2015, broadly in line with the overall increases seen in flows into forbearance in 2016.





64Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





BUSINESS BANKING, CONSUMER FINANCE AND OTHER UNSECURED LENDING

We provide business banking, consumer finance and other unsecured finance for personal customers. This includes personal loans, credit cards and bank account overdrafts.

Lending

We analyse movements in 2016 and 2015 in
the tables below.



|                                                                                                                                               |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  |          | 
|---------------------------------------------------------------------------------------------------------------------------------------------- |  |  | ------------------ | --- |  |  | ----------------- | --------------- |  |  | --------------- | - |  |  | ------------- | - |  |  | ------------- | - |  |  | -------- | 
|                                                                                                                                               |  |  |                    |     |  |  |                   | Other unsecured |  |  |                 |  
|                                                                                                                                               |  |  | Businessbanking
£m | (2) |  |  | Consumerfinance£m |                 |  |  | Personalloans£m |   |  |  | Creditcards£m |   |  |  | Overdrafts
£m |   |  |  | Total
£m | 
|2016                                                                                                                                           |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  |          | 
|At 1 January                                                                                                                                   |  |  | 2,413              |     |  |  | 6,290             |                 |  |  | 2,201           |   |  |  | 2,834         |   |  |  | 536           |   |  |  | 14,274   | 
|Net lending in the
year(1)                                                                                                                     |  |  | (86                | )   |  |  | 474               |                 |  |  | 28              |   |  |  | (341          | ) |  |  | 15            |   |  |  | 90       | 
|At 31 December                                                                                                                                 |  |  | 2,327              |     |  |  | 6,764             |                 |  |  | 2,229           |   |  |  | 2,493         |   |  |  | 551           |   |  |  | 14,364   | 
|                                                                                                                                               |  |  |                    |     |  | 
|2015                                                                                                                                           |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  |          | 
|At 1 January                                                                                                                                   |  |  | 2,644              |     |  |  | 3,303             |                 |  |  | 2,208           |   |  |  | 2,247         |   |  |  | 544           |   |  |  | 10,946   | 
|Net lending in the year(1)                                                                                                                     |  |  | (231               | )   |  |  | 526               |                 |  |  | (7              | ) |  |  | 587           |   |  |  | (8            | ) |  |  | 867      | 
|Acquisitions                                                                                                                                   |  |  |                   |     |  |  | 2,461             |                 |  |  |                |   |  |  |              |   |  |  |              |   |  |  | 2,461    | 
|At 31 December                                                                                                                                 |  |  | 2,413              |     |  |  | 6,290             |                 |  |  | 2,201           |   |  |  | 2,834         |   |  |  | 536           |   |  |  | 14,274   | 
|(1)  Includes
consumer finance gross lending of £3,111m in 2016 (2015: £2,958m). (2)  Restated. For discussion see
Note 46  Credit performance | 
|                                                                                                                                               |  |  |                    |     |  |  |                   | Other unsecured |  |  |                 |  
|                                                                                                                                               |  |  | Businessbanking
£m | (6) |  |  | Consumerfinance£m |                 |  |  | Personalloans£m |   |  |  | Creditcards£m |   |  |  | Overdrafts
£m |   |  |  | Total
£m | 
|2016                                                                                                                                           |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  |          | 
|Loans and advances to customers of which:                                                                                                      |  |  | 2,327              |     |  |  | 6,764             |                 |  |  | 2,229           |   |  |  | 2,493         |   |  |  | 551           |   |  |  | 14,364   | 
|Performing(1)                                                                                                                                  |  |  | 2,216              |     |  |  | 6,682             |                 |  |  | 2,188           |   |  |  | 2,422         |   |  |  | 501           |   |  |  | 14,009   | 
|Early arrears                                                                                                                                  |  |  | 3                  | (2) |  |  | 50                |                 |  |  | 24              |   |  |  | 23            |   |  |  | 25            |   |  |  | 125      | 
|NPLs(3)                                                                                                                                        |  |  | 108                |     |  |  | 32                |                 |  |  | 17              |   |  |  | 48            |   |  |  | 25            |   |  |  | 230      | 
|Impairment loss allowances                                                                                                                     |  |  | 57                 |     |  |  | 146               |                 |  |  | 55              |   |  |  | 77            |   |  |  | 37            |   |  |  | 372      | 
|                                                                                                                                               |  |  |                    |     |  | 
|NPL ratio(4)                                                                                                                                   |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  | 1.60%    | 
|Coverage
ratio(5)                                                                                                                              |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  | 162%     | 
|                                                                                                                                               |  |  |                    |     |  | 
|2015                                                                                                                                           |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  |          | 
|Loans and advances to customers of which:                                                                                                      |  |  | 2,413              |     |  |  | 6,290             |                 |  |  | 2,201           |   |  |  | 2,834         |   |  |  | 536           |   |  |  | 14,274   | 
|Performing(1)                                                                                                                                  |  |  | 2,254              |     |  |  | 6,217             |                 |  |  | 2,157           |   |  |  | 2,771         |   |  |  | 483           |   |  |  | 13,882   | 
|Early arrears                                                                                                                                  |  |  | 4                  | (2) |  |  | 45                |                 |  |  | 27              |   |  |  | 23            |   |  |  | 25            |   |  |  | 124      | 
|NPLs(3)                                                                                                                                        |  |  | 155                |     |  |  | 28                |                 |  |  | 17              |   |  |  | 40            |   |  |  | 28            |   |  |  | 268      | 
|Impairment loss allowances                                                                                                                     |  |  | 75                 |     |  |  | 136               |                 |  |  | 60              |   |  |  | 86            |   |  |  | 42            |   |  |  | 399      | 
|                                                                                                                                               |  |  |                    |     |  | 
|NPL ratio(4)                                                                                                                                   |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  | 1.88%    | 
|Coverage
ratio(5)                                                                                                                              |  |  |                    |     |  |  |                   |                 |  |  |                 |   |  |  |               |   |  |  |               |   |  |  | 149%     | 



|(1) | Excludes loans and advances to customers where the customer did not pay for between 31 and 90 days and NPLs.
|--- | ------------------------------------------------------------------------------------------------------------

|(2) | Excludes early arrears relating to small business customers transferred from our Commercial Banking segment in the fourth quarter of 2016.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------

|(3) | We define NPLs in the Credit risk management section.
|--- | -------------------------------------------------------

|(4) | NPLs as a percentage of loans and advances to customers.
|--- | --------------------------------------------------------

|(5) | Impairment loss allowances as a percentage of NPLs. Impairment loss allowances relate to early arrears and performing assets (i.e. the IBNO provision) as well as NPLs, so the ratio exceeds 100%.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(6) | Restated. For discussion see Note 46
|--- | ------------------------------------

2016 compared to 2015(unaudited)

Business banking
balances were flat, impacted by the economic uncertainty and resulting slowdown in activity. NPLs decreased by 30% to £108m (2015: £155m).

Consumer
finance balances increased 8% to £6,764m (2015: £6,290m), with higher retail loans and car dealer funding. Other unsecured lending balances decreased by 5% in an increasingly competitive market.

At 31 December 2016 forbearance across Business banking, Consumer finance and Other unsecured lending reduced by 16% to £169m (2015: £200m).





Santander UK plc65



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##### Table of Contents



Annual Report 2016

Risk review









Credit risk  other segments



| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  |  |                                                                                                                                                                                                                                                                       |  |  |  | 
| |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  |  |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  |  |                                                                                                                                                                                                                                                                       |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  | 
| |  | Overview                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |  |  |                                                                                                                                                                                                                                                                       |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  | 
| |  | In Commercial Banking, we offer loans, bank accounts, treasury services, invoice discounting, cash transmission, trade finance and
asset finance.  In Global Corporate Banking, we are exposed to credit risk through lending and
selling treasury products to large corporates, and through treasury market activities.  In
Corporate Centre, exposures come from asset and liability management of our balance sheet and our non-core and Legacy Portfolios in run-off. |  |  |  | Credit risk management In this section, we
explain how we manage and mitigate credit risk.  Credit risk review
In this section, we analyse our credit risk exposures and how they are performing. We also focus on forbearance and portfolios of particular interest. |  |  |  | 
| |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  |  |                                                                                                                                                                                                                                                                       |  |  |  | 

Our main portfolios are:



|                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | 
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  |  |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  |  |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 
|Commercial Banking                                                                                                                                                                                                                                                                                                                                                                                                                                         |  |  |  | Global Corporate Banking                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |  |  |  | Corporate Centre                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  | 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 
|   SME and mid corporate  banking, lending and treasury services principally
to enterprises with an annual turnover up to £500m. 
   Commercial Real Estate  lending to UK customers, primarily on tenanted
property assets, with a focus on the office, retail, industrial and residential sectors. 
   Social Housing  lending and treasury services for UK Housing Associations
who own portfolios of residential real estate that is rented out. |  |  |  |    Sovereign and Supranational  securities
issued by local and central governments, and government guaranteed counterparties. We hold them for liquidity needs and short-term trading. 
   Large Corporate  loans and treasury products for large corporates to
support their working capital and liquidity needs.     Financial Institutions  mainly derivatives, repurchase and reverse repurchase transactions (known as repos and reverse repos), and stock borrowing/lending. |  |  |  |    Sovereign and Supranational  securities
issued by local and central governments, and government guaranteed counterparties, held for liquidity needs. 
   Structured Products  There are two portfolios. The ALCO portfolio is high
quality assets, chosen for diversification and liquidity. The Legacy Treasury asset portfolio is mainly asset-backed securities. 
   Derivatives  older total return swaps we held for liquidity, that we are
running down.    
Legacy Portfolios in run-off  assets from acquisitions that do not fit with our strategy. These include certain commercial mortgages. 
   Social Housing  older Social Housing loans that do not fit with our
strategy. |  | 

OTHER SEGMENTS  CREDIT RISK MANAGEMENT



|     |  |      |  |                                                                                          
|---- |  | ---- |  | -----------------------------------------------------------------------------------------
|LOGO |  | LOGO |  | For more on our approach to credit
risk at a Santander UK group level, see pages 45 to 46

In Commercial Banking, we classify a majority of our customers as non-standardised, but we also have SME customers, a high volume
portfolio with smaller individual exposures that we mainly classify as standardised. In Global Corporate Banking and Corporate Centre, we classify all our customers as non-standardised. Non-standardised customer transactions are typically higher in
value, and have more diverse credit characteristics than our standardised customer transactions.

We described how we manage credit risk on standardised customers in
the previous section Credit risk  Retail Banking. We take the same approach to managing credit risk on standardised customers in Commercial Banking, Global Corporate Banking and Corporate Centre, except we do not use scorecards and
credit reference agencies. In the rest of this section, we explain how we manage credit risk on our non-standardised customers.

1. Risk strategy and planning

For details of how we set risk strategy and plans, see the Santander UK group level  credit risk management section. For treasury products, we
take credit risk up to limits for each client. We control, manage and report risks on a counterparty basis, regardless of which part of our business takes the risk.





66Santander UK plc



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##### Table of Contents

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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





2. Assessment and origination

We do a thorough risk assessment to make sure customers can meet their obligations before we approve a credit application. We do this mainly by assigning each customer a
credit rating, using our internal rating scale (see Credit quality in Santander UK group level  credit risk review). To do this, we look at the customers financial history and trends in the economy  backed
up by the expert judgement of a risk analyst. We review our internal ratings at least every year. We also assess the underlying risk of the transaction, taking into account any mitigating factors (see the following tables)  and how it fits
with our risk policies, limits and Risk Appetite, as set by the Board. We consider transactions in line with credit limits approved by the relevant credit authority. Our Executive Risk Control Committee is responsible for setting those limits. In
Global Corporate Banking and Corporate Centre, a specialist analyst usually reviews a transaction at the start and over its life. They base their review on the financial strength of the client, its position in its industry, and its management
strengths.

Credit risk mitigation

The types of credit risk mitigation,
including collateral, across each of our portfolios are as follows.

Commercial Banking:



|                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|---------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                       | 
|Portfolio              |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                       | 
|SME and mid
corporate  |  | Includes secured and unsecured lending. We can use covenants
(financial or non-financial) to support a customers credit rating. For example, we can set limits on how much they can spend or borrow, or how they operate as a business. We can take mortgage debentures as collateral. These are charges over a
companys assets. We can also take guarantees, but we do not treat them as collateral, and we do not put a cash value on them unless they are secured against a tangible asset. We base our lending decision on the customers trading cash
flow. If they default, we will work with defaulted customers to consider debt restructuring options. We generally do not take control of their assets except when restructuring options have been exhausted or to protect our position in relation to
third party claims. In this case, we might appoint an administrator. We also lend against assets (like vehicles and equipment) and invoices for some customers. For assets, we value them before we lend. For invoices, we review the customers
ledgers regularly and lend against debtors that meet agreed criteria. If the customer defaults, we repossess and sell their assets or collect on their invoices.
|                       | 
|Commercial Real
Estate |  | We take a first legal charge on commercial property as
collateral. The loan is subject to strict criteria, including the property condition, age and location, tenant quality, lease terms and length, and the sponsors experience and creditworthiness. Before we agree the loan, we visit the property
and get an independent professional valuation. This valuation assesses the property, the tenant and future demand (such as comparing the market rent to the current rent). Loan agreements typically allow us to get revaluations every 24 months, or
more frequently if it is likely covenants may be breached. We also view the property each year.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                       | 
|Social Housing         |  | We take a first legal charge on portfolios of residential real estate owned and let by UK
Housing Associations as collateral. We revalue this every three to five years (in line with industry practice), using the standard methods for property used for Social Housing. The value would be considerably higher if we based it on normal
residential use. The value of the collateral is in all cases more than the loan balance. On average, the loan balance is 25% to 50% of the implied market value, using our LGD methodology. We have not had a default, loss or repossession on Social
Housing. Older Social Housing loans that do not fit our current business strategy are managed and reported in Corporate Centre.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

Global Corporate Banking:



|                            |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|--------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                            | 
|Portfolio                   |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                            | 
|Sovereign and
Supranational |  | In line with market practice, there is no collateral against these assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                            | 
|Large Corporate             |  | Most of these loans and products are unsecured, but we attach
covenants to our credit agreements. We monitor whether borrowers keep in line with them so we detect any financial distress early. We also have a small structured finance portfolio, where we hold legal charges over the assets we finance.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                            | 
|Financial Institutions      |  | We use standard legal agreements to reduce credit risk on derivatives, repos and reverse
repos, and stock borrowing/lending. We also hold collateral and trade through central counterparties (CCPs) to reduce risk. 
Netting We use netting agreements where they have legal force  mainly in the UK, the rest of Europe and the US. These mean that if a counterparty
defaults, we can legally offset what we owe them and what they owe us, and settle the net amount. However, netting agreements often do not mean we can offset assets and liabilities for accounting purposes, as transactions are usually settled on a
gross basis. In line with market practice, we use standard legal agreements. For derivatives, we use ISDA Master Agreements; for repos and reverse repos, we use Global Master Repurchase Agreements; and for stock borrowing/ lending and other
securities financing, we use Global Master Securities Lending Agreements.  Collateral We use the Credit Support Annex with the ISDA Master Agreement. This gives us collateral for our net exposures. The collateral can be cash, securities or equities. For stock borrowing/lending, and repos and reverse repos, it includes high
quality liquid debt securities and highly liquid equities listed on major developed markets. For derivatives, it is cash or high quality liquid debt securities. We revalue our exposures and collateral every day and adjust the collateral to reflect
any deficits or surpluses. We have processes for controlling how we value and manage collateral. This includes documentation reviews and reporting. Collateral has to meet our collateral parameters policy. This controls the quality and
how much of any one kind of collateral we can hold. That gives us confidence we will be able to cash in the collateral when a client defaults. We have these controls for both equities and debt securities. The collateral we hold for reverse repos is
worth at least 100% of our exposure.  CCPs These are intermediaries between
a buyer and a seller  generally a clearing house. We use CCPs as a way to reduce counterparty credit risk in derivatives.





Santander UK plc67



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##### Table of Contents



Annual Report 2016

Risk review









Corporate Centre:



|                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|---------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                             | 
|Portfolio                    |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                             | 
|Sovereign and
Supranational  |  | In line with market practice, there is no collateral against these assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                             | 
|Structured Products          |  | These are our ALCO and Legacy Treasury asset portfolios.
These assets are unsecured, but benefit from senior positions in the creditor hierarchy. Their credit rating reflects the over-collateralisation in the structure, and the assets that underpin their cash flows and repayment schedules. We use a
detailed expected cash flow analysis to assess if there is any impairment.  We take into account
the structure and assets backing each individual security. We set up an impairment loss allowance if we know an issuer has financial difficulties or they are not keeping to the terms of the contract.                                                                                                                                                                                                   
|                             | 
|Derivatives                  |  | We manage the risk on this portfolio in the same way as for
the derivatives in Global Corporate Banking.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                             | 
|Legacy Portfolios in
run-off |  | We often hold collateral through a first legal charge over
the underlying asset or cash.  We get independent third party valuations on fixed charge security
like aircraft or ships in line with industry guidelines. We then decide if we need to set up an impairment loss allowance. To do that, we bear in mind: 
  The borrowers ability to generate cash flow 
  The age of the assets 
  Whether the loan is still performing satisfactorily 
  Whether or not the reduction in value is likely to be temporary 
  Whether there are other ways to solve the problem. 
Where a borrower gets into difficulty we look to dispose of the collateral, either with agreement or through the insolvency process. We do this as early as possible, to
minimise any loss. We rarely take ownership of collateral.
|                             | 
|Social Housing               |  | We manage the risk on this portfolio in the same way as for the Social Housing portfolio in
Commercial Banking.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

3. Monitoring

We regularly monitor and report
our credit risk by portfolio, segment, industry, location and customer. We give our Executive Risk Control Committee a detailed analysis of our credit exposures and risk trends every month. We also report our larger exposures and risks to the Board
Risk Committee every month.

Our Watchlist

For non-standardised customers,
we also use a Watchlist to help us identify potential problem debt early. Just because a customer is on our Watchlist does not mean they have defaulted. It just means that something has happened that has increased the probability of default. There
are several reasons we might put customers on this list. For example, if they suffer a downturn in trade, breach a covenant, lose a major contract, slip into early arrears, or their key management resign. Whatever the trigger, we review the case to
assess the potential financial impact.

We classify Watchlist cases as:

| | Enhanced monitoring: for less urgent cases. If they are significant, we monitor them more often
|- | -----------------------------------------------------------------------------------------------

| | Proactive management: for more urgent or serious cases. We may take steps to restructure debt including extending the term, taking more collateral, agreeing a lower credit limit or seeking repayment of the loan
through refinancing or other means.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We assess cases on the Watchlist for impairment collectively, unless they are in the hands of our
Restructuring & Recoveries team at which point we assess them individually. If a case becomes NPL, we take it off the Watchlist and assess it for impairment individually.

When a customer is included in proactive management, we usually review the value of any collateral as part of working out what to do next. We also assess whether we need
to set up an impairment loss allowance. This is based on the expected future cash flows and the value of the collateral compared to the loan balance. We also take into account any forbearance we offer (which we describe later on). This includes
whether any extra security or guarantees are available, the likelihood of more equity and the potential to enhance value through asset management.

In Global
Corporate Banking and Corporate Centre we monitor the credit quality of our portfolios of treasury products daily. We use both internal and third-party data to detect any potential credit deterioration.





68Santander UK plc



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##### Table of Contents

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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





4. Arrears management

We identify problem debt by close monitoring, supported by our Watchlist process. When there is a problem, our relationship managers are the first to act, supported by
the relevant credit risk expert. If a case becomes more urgent or needs specialist attention, and if it becomes NPL, we transfer it to our Restructuring & Recoveries team.

We aim to act before a customer actually defaults (to prevent it, if possible). The strategy we use depends on the type of customer, their circumstances and the level of
risk. We use restructuring and rehabilitation tools to try to help our customers find their own way out of financial difficulty and agree on a plan that works for both of us.

We aim to identify warning signs early by monitoring customers financial and trading data, checking to make sure they are not breaching any covenants, and by
having regular dialogue with them. Once a month, we hold Watchlist meetings to agree a strategy for each portfolio. Our Restructuring & Recoveries team attend these meetings, and we may hand over more serious cases to them.

Forbearance

If a customer is having financial difficulty, we will work with
them before they actually default to see if the difficulty can be addressed through forbearance. Their problems might be clear from the results of covenant testing, reviews of trading and other data they give us under the terms of their loan or as
part of our ongoing conversations with them.

We may offer the following types of forbearance. We only do this if our assessments indicate the customer can meet the
revised payments:



|                                                      |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|----------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                      | 
|Action                                                |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                      | 
|Term extension                                        |  | We can extend the term of the loan. At a minimum, we expect
the customer to be able to pay the interest in the short-term and have a realistic chance of repaying the full balance in the long-term. 
We may offer this option if the customer is up-to-date with their payments, but showing signs of financial difficulties. We may also offer this option where the loan is
about to mature and near-term refinancing is not possible on market terms.                                                                                                                                                                                                                                                             
|                                                      | 
|Interest-only                                         |  | We can agree to let a customer pay only the interest on the
loan for a short time  usually less than a year. We only agree to this if we believe their financial problems are temporary and they are going to recover. 
After the interest-only period, we expect the customer to go back to making full payments of interest and capital once they are in a stronger financial position. We
regularly look at the customers financial situation to see when they can afford to do that.                                                                                                                                                                                                                            
|                                                      | 
|Other payment
rescheduling (including
capitalisation) |  | If a customer is having cash flow issues, we may agree to lower or stop their payments until
they have had time to recover. We may:    Reschedule payments to better match the
customers cash flow  for example if the business is seasonal 
  Provide a temporary increase in facilities to cover peak demand ahead of the customers trading improving.
 We might do this by adding their arrears to their loan balance (we call this arrears capitalisation)
or drawing from an overdraft. We may also offer other types of forbearance, including providing new facilities, interest rate concessions, seasonal profiling and interest roll-up. In rare cases, we agree to forgive or reduce part of the debt.

When we agree to any forbearance, we review our impairment loss allowances for them. These accounts may stay in our performing portfolio
but we report them separately as forborne.

If an account is performing when we agree forbearance and there is clear evidence that the customer is consistently
meeting their new terms and the risk profile is improving, we classify the loan as fully performing. If an account is in NPL when we agree forbearance, we keep it in the NPL category. Once we see that the customer is consistently meeting the new
terms we reclassify the loan as performing.





Santander UK plc69



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##### Table of Contents



Annual Report 2016

Risk review









Other forms of debt management

When customers are in financial difficulty we
can also manage debt in other ways, depending on the facts of the specific case:



|                                         |  |                                                                                                                                                                                                                                                                                                         
|---------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                         | 
|Action                                   |  | Description                                                                                                                                                                                                                                                                                             
|                                         | 
|Waiving or changing
covenants            |  | If a borrower breaks a covenant, we can either waive it or change it, taking their latest and future financial position into account. We may
also add a condition on the use of any surplus cash (after operating costs) to pay down their debt to us.                                                  
|                                         | 
|Asking for more
collateral or guarantees |  | If a borrower has unencumbered assets, we may accept new or extra collateral in return for revised financing terms. We may also take a
guarantee from other companies in the same group and/or major shareholders. We only do this where we believe the guarantor will be able to meet their commitment.
|                                         | 
|Asking for more equity                   |  | Where a borrower can no longer pay the interest on their debt, we may accept fresh equity
capital from new or existing investors to change the capital structure in return for better terms on the existing debt.                                                                                       

5. Debt recovery

Consensual arrangements

Where we cannot find a solution like any of the ones we describe above, we look for an exit. If circumstances permit, we aim to do this by agreeing with the
borrower that they will sell some or all of their assets on a voluntary basis or agree to give them time to refinance their debt with another lender.

Enforcement
and recovery

Where we cannot find a way forward or reach a consensual arrangement, we consider recovery options. This can be through:

| | The insolvency process
|- | ----------------------

| | Enforcing over any collateral
|- | -----------------------------

| | Selling the debt on the secondary market
|- | ----------------------------------------

| | Considering other legal action available to recover what we are owed from debtors and guarantors.
|- | -------------------------------------------------------------------------------------------------

If there is a
shortfall, we write it off against the impairment loss allowance held, once the sale has gone through. In certain very rare instances we may act as mortgagee in possession of assets held as collateral against non-performing commercial lending. In
such cases the assets are carried on our balance sheet and are classified according to our accounting policies.

Risk measurement and control

We measure the credit risk on treasury products by adding their potential future exposure to market movements over their lives to their fair value. Then we add it to any
other exposure and measure the total against our credit limits for each client.

We assess our impairment loss allowances regularly and have them independently
reviewed. We look at a number of factors, including the:

| | Cash flow available to service debt
|- | -----------------------------------

| | Value of collateral, based on third-party professional valuations.
|- | ------------------------------------------------------------------





70Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





OTHER SEGMENTS  CREDIT RISK REVIEW

Credit risk arises on asset balances and off-balance sheet transactions such as credit facilities or guarantees. As a result, committed exposures are typically higher
than asset balances.

However, committed exposures can be smaller than the asset balances on the balance sheet due to netting. We show Sovereigns and Supranationals
net of short positions and Large Corporate reverse repurchase agreement exposures are shown net of repurchase agreement liabilities and include OTC derivatives. In addition, the derivative and other treasury product exposures (which are classified
as Financial Institutions) shown are also typically lower than the asset balances. This is because we show our overall risk exposure which takes into account our procedures to mitigate credit risk. The asset balances on our balance sheet
only reflect the more restrictive netting permitted by IAS 32.

Other segments credit risk  committed exposures

Rating distribution

These tables show our credit risk exposure according to
our internal rating scale (see Credit quality in the Santander UK group level  credit risk review section) for each portfolio. On this scale, the higher the rating, the better the quality of the counterparty.



|                                |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|------------------------------- |  |  | ---------------- |  |  |  | -------------- |  |  |  | ---------------- |  |  |  | ----------------- |  |  |  | ---------------- |  |  |  | -------------- |  |  |  | ------------------- |  |  |  | --------- | --- |  |  | --------- | 
|                                |  |  | 9(AAA to
AA-) £m |  |  |  | 8(A+ to A)
 £m |  |  |  | 7(A- to
BBB+) £m |  |  |  | 6(BBB to BBB-)
£m |  |  |  | 5(BB+ to BB-)
£m |  |  |  | 4(B+ to B)
 £m |  |  |  | 1 to 3(B- to D)
 £m |  |  |  | Other 
£m | (1) |  |  | Total 
£m | 
|2016                            |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|Commercial Banking              |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|SME and mid corporate           |  |  | 22               |  |  |  | 112            |  |  |  | 344              |  |  |  | 2,826             |  |  |  | 4,219            |  |  |  | 3,142          |  |  |  | 533                 |  |  |  | 130       |     |  |  | 11,328    | 
|Commercial Real Estate          |  |  |                 |  |  |  |               |  |  |  | 302              |  |  |  | 5,852             |  |  |  | 2,754            |  |  |  | 498            |  |  |  | 118                 |  |  |  | 1         |     |  |  | 9,525     | 
|Social Housing                  |  |  | 1,355            |  |  |  | 1,499          |  |  |  | 215              |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 3,069     | 
|                                |  |  | 1,377            |  |  |  | 1,611          |  |  |  | 861              |  |  |  | 8,678             |  |  |  | 6,973            |  |  |  | 3,640          |  |  |  | 651                 |  |  |  | 131       |     |  |  | 23,922    | 
|Global Corporate Banking        |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|Sovereign and Supranational     |  |  | 1,025            |  |  |  | 3,111          |  |  |  | 977              |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 5,113     | 
|Large Corporate                 |  |  | 204              |  |  |  | 2,028          |  |  |  | 5,347            |  |  |  | 9,493             |  |  |  | 4,296            |  |  |  | 56             |  |  |  | 75                  |  |  |  | 1         |     |  |  | 21,500    | 
|Financial Institutions          |  |  | 439              |  |  |  | 3,877          |  |  |  | 2,913            |  |  |  | 597               |  |  |  | 49               |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 7,875     | 
|                                |  |  | 1,668            |  |  |  | 9,016          |  |  |  | 9,237            |  |  |  | 10,090            |  |  |  | 4,345            |  |  |  | 56             |  |  |  | 75                  |  |  |  | 1         |     |  |  | 34,488    | 
|Corporate Centre                |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|Sovereign and Supranational     |  |  | 34,474           |  |  |  |               |  |  |  |                 |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 34,474    | 
|Structured Products             |  |  | 1,597            |  |  |  | 1,755          |  |  |  | 654              |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 4,006     | 
|Derivatives                     |  |  |                 |  |  |  | 175            |  |  |  | 312              |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 487       | 
|Legacy Portfolios in run-off(2) |  |  | 2                |  |  |  | 1              |  |  |  | 5                |  |  |  | 540               |  |  |  | 215              |  |  |  | 69             |  |  |  | 63                  |  |  |  | 480       |     |  |  | 1,375     | 
|Social Housing                  |  |  | 3,313            |  |  |  | 2,707          |  |  |  | 548              |  |  |  | 43                |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 6,611     | 
|                                |  |  | 39,386           |  |  |  | 4,638          |  |  |  | 1,519            |  |  |  | 583               |  |  |  | 215              |  |  |  | 69             |  |  |  | 63                  |  |  |  | 480       |     |  |  | 46,953    | 
|                                |  |  |                  |  |  |  |                |  | 
|2015                            |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|Commercial Banking              |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|SME and mid corporate(3)        |  |  | 14               |  |  |  | 115            |  |  |  | 330              |  |  |  | 2,505             |  |  |  | 4,167            |  |  |  | 3,235          |  |  |  | 361                 |  |  |  | 147       |     |  |  | 10,874    | 
|Commercial Real Estate(3)       |  |  |                 |  |  |  |               |  |  |  | 656              |  |  |  | 5,236             |  |  |  | 3,118            |  |  |  | 459            |  |  |  | 186                 |  |  |  | 27        |     |  |  | 9,682     | 
|Social Housing                  |  |  | 970              |  |  |  | 892            |  |  |  | 257              |  |  |  | 50                |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 2,169     | 
|                                |  |  | 984              |  |  |  | 1,007          |  |  |  | 1,243            |  |  |  | 7,791             |  |  |  | 7,285            |  |  |  | 3,694          |  |  |  | 547                 |  |  |  | 174       |     |  |  | 22,725    | 
|Global Corporate Banking        |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|Sovereign and Supranational     |  |  | 889              |  |  |  | 2,889          |  |  |  | 789              |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 4,567     | 
|Large Corporate                 |  |  | 3                |  |  |  | 1,769          |  |  |  | 5,963            |  |  |  | 8,351             |  |  |  | 3,823            |  |  |  | 123            |  |  |  | 32                  |  |  |  |          |     |  |  | 20,064    | 
|Financial Institutions          |  |  | 266              |  |  |  | 3,811          |  |  |  | 2,982            |  |  |  | 446               |  |  |  | 10               |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 7,515     | 
|                                |  |  | 1,158            |  |  |  | 8,469          |  |  |  | 9,734            |  |  |  | 8,797             |  |  |  | 3,833            |  |  |  | 123            |  |  |  | 32                  |  |  |  |          |     |  |  | 32,146    | 
|Corporate Centre                |  |  |                  |  |  |  |                |  |  |  |                  |  |  |  |                   |  |  |  |                  |  |  |  |                |  |  |  |                     |  |  |  |           |     |  |  |           | 
|Sovereign and Supranational     |  |  | 24,153           |  |  |  |               |  |  |  |                 |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 24,153    | 
|Structured Products             |  |  | 1,437            |  |  |  | 1,394          |  |  |  | 761              |  |  |  |                  |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 3,592     | 
|Derivatives                     |  |  |                 |  |  |  | 484            |  |  |  | 268              |  |  |  | 21                |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 773       | 
|Legacy Portfolios in run-off(2) |  |  |                 |  |  |  | 1              |  |  |  | 6                |  |  |  | 702               |  |  |  | 164              |  |  |  | 146            |  |  |  | 84                  |  |  |  | 596       |     |  |  | 1,699     | 
|Social Housing                  |  |  | 3,423            |  |  |  | 2,940          |  |  |  | 1,072            |  |  |  | 213               |  |  |  |                 |  |  |  |               |  |  |  |                    |  |  |  |          |     |  |  | 7,648     | 
|                                |  |  | 29,013           |  |  |  | 4,819          |  |  |  | 2,107            |  |  |  | 936               |  |  |  | 164              |  |  |  | 146            |  |  |  | 84                  |  |  |  | 596       |     |  |  | 37,865    | 



|(1) | Consists of smaller exposures mainly in the commercial mortgage portfolio. We use scorecards for them, instead of a rating model.
|--- | ---------------------------------------------------------------------------------------------------------------------------------

|(2) | Consists of commercial mortgages and residual structured and asset finance loans (shipping, aviation, and structured finance).
|--- | ------------------------------------------------------------------------------------------------------------------------------

|(3) | Restated. For discussion see Note 46
|--- | ------------------------------------





Santander UK plc71



---

##### Table of Contents



Annual Report 2016

Risk review









Geographical distribution

We classify geographical location according to
country of risk  in other words, the country where each counterparty has its main business activity or assets unless there is a full risk transfer guarantee in place, in which case we use the guarantors country of domicile instead. If
our clients have operations in many countries, we use their country of incorporation.



|                             |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|---------------------------- |  | ------ | ------ |  | ---------------------- |  | ----- | ----------------- |  |  | ------ |  |  | ---------------- | ----- |  | --------- |  | ----- |  |  |  | ------ | 
|                             |  | UK
 £m |        |  | Peripheral
eurozone £m |  |       | Rest of
Europe £m |  |  | US
 £m |  |  | Rest of
World £m |       |  | Total
 £m | 
|2016                         |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|Commercial Banking           |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|SME and mid corporate        |  |        | 11,188 |  |                        |  | 18    |                   |  |  | 65     |  |  |                  | 57    |  |           |  |      |  |  |  | 11,328 | 
|Commercial Real Estate       |  |        | 9,525  |  |                        |  |      |                   |  |  |       |  |  |                  |      |  |           |  |      |  |  |  | 9,525  | 
|Social Housing               |  |        | 3,069  |  |                        |  |      |                   |  |  |       |  |  |                  |      |  |           |  |      |  |  |  | 3,069  | 
|                             |  |        | 23,782 |  |                        |  | 18    |                   |  |  | 65     |  |  |                  | 57    |  |           |  |      |  |  |  | 23,922 | 
|Global Corporate Banking     |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|Sovereign and Supranational  |  |        | 332    |  |                        |  | 977   |                   |  |  | 666    |  |  |                  |      |  |           |  | 3,138 |  |  |  | 5,113  | 
|Large Corporate              |  |        | 17,793 |  |                        |  | 815   |                   |  |  | 2,541  |  |  |                  | 73    |  |           |  | 278   |  |  |  | 21,500 | 
|Financial Institutions       |  |        | 4,282  |  |                        |  | 582   |                   |  |  | 1,047  |  |  |                  | 1,175 |  |           |  | 789   |  |  |  | 7,875  | 
|                             |  |        | 22,407 |  |                        |  | 2,374 |                   |  |  | 4,254  |  |  |                  | 1,248 |  |           |  | 4,205 |  |  |  | 34,488 | 
|Corporate Centre             |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|Sovereign and Supranational  |  |        | 26,693 |  |                        |  |      |                   |  |  | 1,569  |  |  |                  | 4,770 |  |           |  | 1,442 |  |  |  | 34,474 | 
|Structured Products          |  |        | 1,352  |  |                        |  | 5     |                   |  |  | 1,524  |  |  |                  |      |  |           |  | 1,125 |  |  |  | 4,006  | 
|Derivatives                  |  |        | 312    |  |                        |  |      |                   |  |  | 12     |  |  |                  | 163   |  |           |  |      |  |  |  | 487    | 
|Legacy Portfolios in run-off |  |        | 1,205  |  |                        |  |      |                   |  |  |       |  |  |                  |      |  |           |  | 170   |  |  |  | 1,375  | 
|Social Housing               |  |        | 6,611  |  |                        |  |      |                   |  |  |       |  |  |                  |      |  |           |  |      |  |  |  | 6,611  | 
|                             |  |        | 36,173 |  |                        |  | 5     |                   |  |  | 3,105  |  |  |                  | 4,933 |  |           |  | 2,737 |  |  |  | 46,953 | 
|                             |  |        |        |  |                        | 
|2015                         |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|Commercial Banking           |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|SME and mid corporate(1)     |  |        | 10,800 |  |                        |  | 25    |                   |  |  | 47     |  |  |                  |      |  |           |  | 2     |  |  |  | 10,874 | 
|Commercial Real Estate(1)    |  |        | 9,682  |  |                        |  |      |                   |  |  |       |  |  |                  |      |  |           |  |      |  |  |  | 9,682  | 
|Social Housing               |  |        | 2,169  |  |                        |  |      |                   |  |  |       |  |  |                  |      |  |           |  |      |  |  |  | 2,169  | 
|                             |  |        | 22,651 |  |                        |  | 25    |                   |  |  | 47     |  |  |                  |      |  |           |  | 2     |  |  |  | 22,725 | 
|Global Corporate Banking     |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|Sovereign and Supranational  |  |        |       |  |                        |  | 789   |                   |  |  | 872    |  |  |                  |      |  |           |  | 2,906 |  |  |  | 4,567  | 
|Large Corporate              |  |        | 16,858 |  |                        |  | 762   |                   |  |  | 1,926  |  |  |                  | 171   |  |           |  | 347   |  |  |  | 20,064 | 
|Financial Institutions       |  |        | 3,647  |  |                        |  | 775   |                   |  |  | 1,170  |  |  |                  | 1,277 |  |           |  | 646   |  |  |  | 7,515  | 
|                             |  |        | 20,505 |  |                        |  | 2,326 |                   |  |  | 3,968  |  |  |                  | 1,448 |  |           |  | 3,899 |  |  |  | 32,146 | 
|Corporate Centre             |  |        |        |  |                        |  |       |                   |  |  |        |  |  |                  |       |  |           |  |       |  |  |  |        | 
|Sovereign and Supranational  |  |        | 19,354 |  |                        |  |      |                   |  |  | 1,093  |  |  |                  | 2,526 |  |           |  | 1,180 |  |  |  | 24,153 | 
|Structured Products          |  |        | 1,202  |  |                        |  | 2     |                   |  |  | 1,546  |  |  |                  | 50    |  |           |  | 792   |  |  |  | 3,592  | 
|Derivatives                  |  |        | 289    |  |                        |  |      |                   |  |  | 194    |  |  |                  | 290   |  |           |  |      |  |  |  | 773    | 
|Legacy Portfolios in run-off |  |        | 1,420  |  |                        |  | 8     |                   |  |  | 27     |  |  |                  | 21    |  |           |  | 223   |  |  |  | 1,699  | 
|Social Housing               |  |        | 7,648  |  |                        |  |      |                   |  |  |       |  |  |                  |      |  |           |  |      |  |  |  | 7,648  | 
|                             |  |        | 29,913 |  |                        |  | 10    |                   |  |  | 2,860  |  |  |                  | 2,887 |  |           |  | 2,195 |  |  |  | 37,865 | 



|(1) | Restated. For discussion see Note 46
|--- | ------------------------------------





72Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





2016 compared to 2015(unaudited)

Commercial Banking

In 2016, our committed exposures increased by 5% to £23.9bn (2015: £22.7bn), despite a competitive
environment, economic uncertainty and the resulting slowdown in SME activity this year:

| | Our SME and mid corporate exposures increased by 4% to £11.3bn (2015: £10.9bn) due to growth in the mid corporate portfolio more than offsetting a slight reduction in SME exposures.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Our Commercial Real Estate portfolio decreased by 2% to £9.5bn (2015: £9.7bn) as we actively manage exposures to certain segments in line with our proactive risk management practices.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Our Social Housing portfolio increased by 41% to £3.1bn (2015: £2.2bn), driven by refinancing of longer-dated loans previously managed in Corporate Centre onto shorter maturities (and on current market
terms).
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Global Corporate Banking

In
2016, our committed exposures increased by 7% to £34.5bn (2015: £32.1bn) mainly due to increases in our Sovereign and Supranational and Large Corporate portfolios:

| | Sovereign and Supranational exposures increased by 12% to £5.1bn (2015: £4.6bn). Increased holdings, primarily in UK Government securities, were partly offset by decreases in European government securities
as part of normal liquid asset portfolio management and short-term markets trading activity. The portfolio profile stayed mainly short-term (up to one year), reflecting the purpose of the holdings. Our rest of world exposures principally comprised
of Japan, as in 2015.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Large Corporate exposures increased by 7% to £21.5bn (2015: £20.1bn) driven by lending and origination activities relating to project and acquisition finance and transactional services, as well as increased
lending to a number of our trading corporate customers. At 31 December 2016, our direct lending committed exposure to oil and gas customers was £1.8bn (2015: £1.7bn) and to mining customers was £1.4bn (2015: £1.2bn).
Credit quality remained broadly stable. The portfolio profile stayed mainly short to medium-term (up to five years), reflecting the type of finance we typically provide to support our clients needs.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Exposures in our Financial Institutions portfolio increased by 5% to £7.9bn (2015: £7.5bn) due to normal business activity.
|- | ---------------------------------------------------------------------------------------------------------------------------

Corporate Centre

In 2016, committed exposures increased
by 24% to £47.0bn (2015: £37.9bn) mainly driven by our Sovereign and Supranational portfolio:

| | Exposures in our Sovereign and Supranational portfolio are mainly cash at central banks and highly-rated liquid assets we hold as part of normal liquid asset portfolio management. The increase of 43% in the overall
exposure to £34.5bn (2015: £24.2bn) was driven by an increase in deposits in the UK as well as the purchase of a held-to-maturity portfolio of UK sovereign bonds.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Legacy Portfolios in run-off reduced in 2016 by 19% to £1.4bn (2015: £1.7bn) driven by sales of aviation and shipping assets.
|- | -----------------------------------------------------------------------------------------------------------------------------

| | Social Housing exposures reduced in 2016 by 14% to £6.6bn (2015: £7.6bn) as we continued to refinance longer-dated loans onto shorter maturities (and on current market terms) that are then managed in
Commercial Banking.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc73



---

##### Table of Contents



Annual Report 2016

Risk review









Other segments  credit risk mitigation

Commercial Banking

At 31 December 2016, the collateral we held against impaired loans was 42% (2015: 42%) of the carrying amount of the
impaired loan balances.

Global Corporate Banking

At
31 December 2016 the top 20 clients with derivative exposure made up 69% (2015: 70%) of our total derivative exposure, all of which were banks and CCPs. The weighted-average credit rating was 7.3 (2015: 7.4). At 31 December 2016 and 2015,
we held no collateral against impaired loans in the Large Corporate portfolio.

Corporate Centre

We reduce credit risk in derivatives with netting agreements, collateralisation and the use of CCPs. At 31 December 2016 we had cash collateral of £457m (2015:
£551m) held against our Legacy Portfolios in run-off. The collateral we held against impaired loans was 100% (2015: 100%) of the carrying amount of the impaired loan balances.

Other segments  credit performance

We monitor
exposures that show potentially higher risk characteristics using our Watchlist process (described in Risk monitoring in the Credit risk management section). The table below shows the exposures we monitor, and those we
classify as non-performing by portfolio at 31 December 2016 and 2015:



|                                          |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|----------------------------------------- |  | ------------------ | -------------- |  | --------- |  | ---------------------- |  |  |  | ----------------------- |  |  |  | -------------------------- | --- |  |  | --------- | --- |  |  | ------------------------------------- | 
|                                          |  | Committed Exposure |                |  |           | 
|                                          |  |                    |                |  | Watchlist |  |                        |  |  |  |                         |  |  |  |                           
|                                          |  |                    | Performing 
£m |  |           |  | EnhancedMonitoring
 £m |  |  |  | ProactiveManagement
 £m |  |  |  | Non-performingexposure
 £m | (1) |  |  | Total 
£m | (2) |  |  | Observedimpairment loss
allowances £m | 
|2016                                      |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|Commercial Banking                        |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|SME and mid corporate                     |  |                    | 9,744          |  |           |  | 892                    |  |  |  | 331                     |  |  |  | 361                        |     |  |  | 11,328    |     |  |  | 139                                   | 
|Commercial Real Estate                    |  |                    | 9,136          |  |           |  | 161                    |  |  |  | 49                      |  |  |  | 179                        |     |  |  | 9,525     |     |  |  | 44                                    | 
|Social Housing                            |  |                    | 2,930          |  |           |  | 139                    |  |  |  |                        |  |  |  |                           |     |  |  | 3,069     |     |  |  |                                      | 
|                                          |  |                    | 21,810         |  |           |  | 1,192                  |  |  |  | 380                     |  |  |  | 540                        |     |  |  | 23,922    |     |  |  | 183                                   | 
|Global Corporate Banking                  |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|Sovereign and Supranational               |  |                    | 5,113          |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 5,113     |     |  |  |                                      | 
|Large Corporate                           |  |                    | 20,702         |  |           |  | 659                    |  |  |  | 70                      |  |  |  | 69                         |     |  |  | 21,500    |     |  |  | 33                                    | 
|Financial Institutions                    |  |                    | 7,671          |  |           |  | 202                    |  |  |  | 2                       |  |  |  |                           |     |  |  | 7,875     |     |  |  |                                      | 
|                                          |  |                    | 33,486         |  |           |  | 861                    |  |  |  | 72                      |  |  |  | 69                         |     |  |  | 34,488    |     |  |  | 33                                    | 
|Corporate Centre                          |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|Sovereign and Supranational               |  |                    | 34,474         |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 34,474    |     |  |  |                                      | 
|Structured Products                       |  |                    | 4,006          |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 4,006     |     |  |  |                                      | 
|Derivatives                               |  |                    | 487            |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 487       |     |  |  |                                      | 
|Legacy Portfolios in run-off              |  |                    | 1,273          |  |           |  | 20                     |  |  |  | 9                       |  |  |  | 73                         |     |  |  | 1,375     |     |  |  | 31                                    | 
|Social Housing                            |  |                    | 6,447          |  |           |  | 164                    |  |  |  |                        |  |  |  |                           |     |  |  | 6,611     |     |  |  |                                      | 
|                                          |  |                    | 46,687         |  |           |  | 184                    |  |  |  | 9                       |  |  |  | 73                         |     |  |  | 46,953    |     |  |  | 31                                    | 
|Total observed impairment loss allowances |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  | 247                                   | 
|Allowance for
IBNO(3)                     |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  | 91                                    | 
|Total impairment loss allowances          |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  | 338                                   | 



|(1) | Non-performing exposure includes committed facilities and derivative exposures. So it can exceed the NPLs in the table on page 76 which only include drawn balances.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Includes committed facilities and derivatives. We define Enhanced Monitoring and Proactive Management in the Risk monitoring section.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Allowance for incurred but not observed (IBNO) losses as described in Note 1 to the Consolidated Financial Statements.
|--- | ----------------------------------------------------------------------------------------------------------------------





74Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks







|                                          |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|----------------------------------------- |  | ------------------ | -------------- |  | --------- |  | ---------------------- |  |  |  | ----------------------- |  |  |  | -------------------------- | --- |  |  | --------- | --- |  |  | ------------------------------------- | 
|                                          |  | Committed Exposure |                |  |           | 
|                                          |  |                    |                |  | Watchlist |  |                        |  |  |  |                         |  |  |  |                           
|                                          |  |                    | Performing 
£m |  |           |  | EnhancedMonitoring
 £m |  |  |  | ProactiveManagement
 £m |  |  |  | Non-performingexposure
 £m | (1) |  |  | Total 
£m | (2) |  |  | Observedimpairment loss
allowances £m | 
|2015                                      |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|Commercial Banking                        |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|SME and mid corporate(4)                  |  |                    | 9,424          |  |           |  | 844                    |  |  |  | 307                     |  |  |  | 299                        |     |  |  | 10,874    |     |  |  | 119                                   | 
|Commercial Real Estate(4)                 |  |                    | 9,306          |  |           |  | 123                    |  |  |  | 93                      |  |  |  | 160                        |     |  |  | 9,682     |     |  |  | 43                                    | 
|Social Housing                            |  |                    | 2,162          |  |           |  | 7                      |  |  |  |                        |  |  |  |                           |     |  |  | 2,169     |     |  |  |                                      | 
|                                          |  |                    | 20,892         |  |           |  | 974                    |  |  |  | 400                     |  |  |  | 459                        |     |  |  | 22,725    |     |  |  | 162                                   | 
|Global Corporate Banking                  |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|Sovereign and Supranational               |  |                    | 4,567          |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 4,567     |     |  |  |                                      | 
|Large Corporate                           |  |                    | 18,176         |  |           |  | 1,758                  |  |  |  | 120                     |  |  |  | 10                         |     |  |  | 20,064    |     |  |  | 9                                     | 
|Financial Institutions                    |  |                    | 7,459          |  |           |  | 4                      |  |  |  | 52                      |  |  |  |                           |     |  |  | 7,515     |     |  |  |                                      | 
|                                          |  |                    | 30,202         |  |           |  | 1,762                  |  |  |  | 172                     |  |  |  | 10                         |     |  |  | 32,146    |     |  |  | 9                                     | 
|Corporate Centre                          |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  |                                       | 
|Sovereign and Supranational               |  |                    | 24,153         |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 24,153    |     |  |  |                                      | 
|Structured Products                       |  |                    | 3,592          |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 3,592     |     |  |  |                                      | 
|Derivatives                               |  |                    | 773            |  |           |  |                       |  |  |  |                        |  |  |  |                           |     |  |  | 773       |     |  |  |                                      | 
|Legacy Portfolios in run-off              |  |                    | 1,493          |  |           |  | 102                    |  |  |  | 10                      |  |  |  | 94                         |     |  |  | 1,699     |     |  |  | 55                                    | 
|Social Housing                            |  |                    | 7,574          |  |           |  | 74                     |  |  |  |                        |  |  |  |                           |     |  |  | 7,648     |     |  |  |                                      | 
|                                          |  |                    | 37,585         |  |           |  | 176                    |  |  |  | 10                      |  |  |  | 94                         |     |  |  | 37,865    |     |  |  | 55                                    | 
|Total observed impairment loss allowances |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  | 226                                   | 
|Allowance for
IBNO(3)                     |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  | 108                                   | 
|Total impairment loss allowances          |  |                    |                |  |           |  |                        |  |  |  |                         |  |  |  |                            |     |  |  |           |     |  |  | 334                                   | 



|(1) | Non-performing exposure includes committed facilities and derivative exposures. So it can exceed the NPLs in the table on page 76 which only include drawn balances.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Includes committed facilities and derivatives. We define Enhanced Monitoring and Proactive Management in the Risk monitoring section.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Allowance for incurred but not observed (IBNO) losses as described in Note 1 to the Consolidated Financial Statements.
|--- | ----------------------------------------------------------------------------------------------------------------------

|(4) | Restated. For discussion see Note 46
|--- | ------------------------------------

2016 compared to 2015(unaudited)

Commercial Banking

In our SME and mid corporate portfolio, exposures subject to enhanced monitoring increased by 6% to £892m (2015:
£844m), exposures subject to proactive management increased by 8% to £331m (2015: £307m) and non-performing exposures increased by 21% to £361m (2015: £299m). These increases were spread across a number of sectors and
related mainly to trading concerns for certain customers.

In our Commercial Real Estate portfolio, exposures subject to enhanced monitoring increased to £161m
(2015: £123m) and exposures subject to proactive management decreased to £49m (2015: £93m). Non-performing exposures increased marginally to £179m (2015: £160m) due to a loan of £50m that moved to non-performance
which was partially offset by a number of exits on legacy cases. The £50m loan that moved to non-performance has fully repaid in 2017 and without this case non-performing exposures would have decreased at 31 December 2016. The portfolio
remains well covered with an NPL coverage ratio of 32% and low write-offs of £1m.

In our Social Housing portfolio, exposures subject to enhanced monitoring
increased to £139m (2015: £7m) due to the addition of two customers following governance issues.

Global Corporate Banking

In our Large Corporate portfolio, exposures subject to enhanced monitoring decreased by 63% to £659m (2015: £1,758m) driven by the return of two
large cases to performing as a result of improved trading. Exposures subject to proactive management decreased by 42% to £70m (2015: £120m) driven by repayments on two cases. Non-performing exposures increased to £69m (2015:
£10m) due to the movement of a single exposure to non-performing.

In our Financial Institutions portfolio, exposures subject to enhanced monitoring increased
to £202m (2015: £4m) due to concerns over capitalisation and the litigation impact on one of our trading customers.

Corporate
Centre

In our Legacy Portfolios in run-off portfolio, exposures subject to enhanced monitoring decreased to £20m (2015: £102m) driven by sales of
aviation and shipping assets.

In our Social Housing portfolio, exposures subject to enhanced monitoring increased to £164m (2015: £74m) due to the
addition of two customers following governance issues.





Santander UK plc75



---

##### Table of Contents



Annual Report 2016

Risk review









Non-performing loans and advances(1)(2)



|                                             |  |                        |        |  |                             |  |       |                      |  |  |       | 
|-------------------------------------------- |  | ---------------------- | ------ |  | --------------------------- |  | ----- | -------------------- |  |  | ----- | 
|                                             |  | Commercial
Banking 
£m |        |  | Global
Corporate
Banking £m |  |       | Corporate
Centre 
£m | 
|2016                                         |  |                        |        |  |                             |  |       |                      |  |  |       | 
|Loans and advances to customers of which:(2) |  |                        | 19,381 |  |                             |  | 5,659 |                      |  |  | 6,478 | 
|NPLs(3)                                      |  |                        | 518    |  |                             |  | 63    |                      |  |  | 73    | 
|Impairment loss allowances                   |  |                        | 220    |  |                             |  | 57    |                      |  |  | 61    | 
|                                             |  |                        |        |  |                             |  |       |                      |  |  |       | 
|                                             |  | %                      |        |  | %                           |  |       | %                    | 
|NPL ratio(4)                                 |  |                        | 2.67   |  |                             |  | 1.11  |                      |  |  | 1.12  | 
|Coverage
ratio(5)                            |  |                        | 42     |  |                             |  | 90    |                      |  |  | 84    | 
|                                             |  |                        |        |  |                             |  |       |                      |  |  |       | 
|                                             |  |                        |       
|2015                                         |  |                        |        |  |                             |  |       |                      |  |  |       | 
|Loans and advances to customers of which:    |  |                        | 18,680 |  |                             |  | 5,470 |                      |  |  | 7,391 | 
|NPLs(3)                                      |  |                        | 439    |  |                             |  | 10    |                      |  |  | 87    | 
|Impairment loss allowances                   |  |                        | 199    |  |                             |  | 33    |                      |  |  | 102   | 
|                                             |  |                        |        |  |                             |  |       |                      |  |  |       | 
|                                             |  | %                      |        |  | %                           |  |       | %                    | 
|NPL ratio(4)                                 |  |                        | 2.35   |  |                             |  | 0.18  |                      |  |  | 1.18  | 
|Coverage
ratio(5)                            |  |                        | 45     |  |                             |  | 330   |                      |  |  | 117   | 



|(1) | We define NPLs in the Credit risk management section.
|--- | -------------------------------------------------------

|(2) | Includes Social Housing loans and finance leases.
|--- | -------------------------------------------------

|(3) | All NPLs continue accruing interest.
|--- | ------------------------------------

|(4) | NPLs as a percentage of loans and advances to customers.
|--- | --------------------------------------------------------

|(5) | Impairment loss allowances as a percentage of NPLs. Impairment loss allowances relate to early arrears and performing assets (i.e. the IBNO provision) as well as NPLs, so the ratio can exceed 100%.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

NPL movements in 2016

We analyse NPL movements in 2016 below.
Entries are loans which we have classified as NPLs in 2016. Exits (including repayments) are the part of loans that has been repaid (in full or in part), plus loans that returned to performing status. Write-offs
are the unrecovered part of loans where we have exhausted recovery options, including realising any collateral. Forbearance does not change the NPL status.



|                             |  |                        |      |   |                             |  |    |                      |  |  |     |  
|---------------------------- |  | ---------------------- | ---- | - | --------------------------- |  | -- | -------------------- |  |  | --- | -
|                             |  | Commercial
Banking 
£m |      |   | Global
Corporate
Banking £m |  |    | Corporate
Centre 
£m | 
|At 1 January 2016            |  |                        | 439  |   |                             |  | 10 |                      |  |  | 87  |  
|Entries                      |  |                        | 269  |   |                             |  | 54 |                      |  |  | 101 |  
|Exits (including repayments) |  |                        | (180 | ) |                             |  | (1 | )                    |  |  | (64 | )
|Write offs                   |  |                        | (10  | ) |                             |  |   |                      |  |  | (51 | )
|At 31 December 2016          |  |                        | 518  |   |                             |  | 63 |                      |  |  | 73  |  





76Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Other segments  forbearance

We only make forbearance arrangements for lending to customers.



|                             |  |                        |      |  |                             |  |       |                      |  |  |      | 
|---------------------------- |  | ---------------------- | ---- |  | --------------------------- |  | ----- | -------------------- |  |  | ---- | 
|                             |  | Commercial
Banking 
£m |      |  | Global
Corporate
Banking £m |  |       | Corporate
Centre 
£m | 
|2016                         |  |                        |      |  |                             |  |       |                      |  |  |      | 
|In-flow during the year(1)   |  |                        |      |  |                             |  |       |                      |  |  |      | 
| Term extension             |  |                        | 74   |  |                             |  | 11    |                      |  |  |     | 
| Interest-only              |  |                        | 73   |  |                             |  |      |                      |  |  | 6    | 
| Other payment rescheduling |  |                        | 142  |  |                             |  |      |                      |  |  | 6    | 
|                             |  |                        | 289  |  |                             |  | 11    |                      |  |  | 12   | 
|Stock(2)                     |  |                        |      |  |                             |  |       |                      |  |  |      | 
| Term extension             |  |                        | 168  |  |                             |  | 11    |                      |  |  | 1    | 
| Interest-only              |  |                        | 158  |  |                             |  |      |                      |  |  | 20   | 
| Other payment rescheduling |  |                        | 208  |  |                             |  | 10    |                      |  |  | 16   | 
|                             |  |                        | 534  |  |                             |  | 21    |                      |  |  | 37   | 
|Of which:                    |  |                        |      |  |                             |  |       |                      |  |  |      | 
| Non-performing             |  |                        | 344  |  |                             |  | 10    |                      |  |  | 15   | 
| Performing                 |  |                        | 190  |  |                             |  | 11    |                      |  |  | 22   | 
|                             |  |                        | 534  |  |                             |  | 21    |                      |  |  | 37   | 
|Proportion of portfolio      |  |                        | 2.2% |  |                             |  | 0.1%  |                      |  |  | 2.7% | 
|                             |  |                        |     
|2015(3)                      |  |                        |      |  |                             |  |       |                      |  |  |      | 
|In-flow during the year(1)   |  |                        |      |  |                             |  |       |                      |  |  |      | 
| Term extension             |  |                        | 33   |  |                             |  |      |                      |  |  |     | 
| Interest-only              |  |                        | 77   |  |                             |  |      |                      |  |  | 7    | 
| Other payment rescheduling |  |                        | 68   |  |                             |  | 10    |                      |  |  | 6    | 
|                             |  |                        | 178  |  |                             |  | 10    |                      |  |  | 13   | 
|Stock(2)                     |  |                        |      |  |                             |  |       |                      |  |  |      | 
| Term extension             |  |                        | 145  |  |                             |  |      |                      |  |  | 36   | 
| Interest-only              |  |                        | 230  |  |                             |  |      |                      |  |  | 51   | 
| Other payment rescheduling |  |                        | 170  |  |                             |  | 10    |                      |  |  | 33   | 
|                             |  |                        | 545  |  |                             |  | 10    |                      |  |  | 120  | 
|Of which:                    |  |                        |      |  |                             |  |       |                      |  |  |      | 
| Non-performing             |  |                        | 318  |  |                             |  | 10    |                      |  |  | 36   | 
| Performing                 |  |                        | 227  |  |                             |  |      |                      |  |  | 84   | 
|                             |  |                        | 545  |  |                             |  | 10    |                      |  |  | 120  | 
|Proportion of portfolio      |  |                        | 2.4% |  |                             |  | <0.1% |                      |  |  | 7.0% | 



|(1) | The figures reflect the forbearance activity in the year, regardless of whether there was any forbearance on the accounts before.
|--- | ---------------------------------------------------------------------------------------------------------------------------------

|(2) | We base forbearance type on the first forbearance we applied. Tables only show accounts open at the year-end.
|--- | -------------------------------------------------------------------------------------------------------------

|(3) | Restated. For discussion see Note 46
|--- | ------------------------------------





Santander UK plc77



---

##### Table of Contents



Annual Report 2016

Risk review









2016 compared to 2015(unaudited)

Commercial Banking

At
31 December 2016 and 2015 we only had forbearance arrangements with our SME and mid corporate and Commercial Real Estate customers. Forbearance started in the year increased by £111m to £289m in 2016 (2015: £178m) mainly due
to increased activity in a relatively small number of loans.

At 31 December 2016, the cumulative forbearance stock reduced by 2% to £534m (2015:
£545m). This decrease was mainly due to the application of exit criteria to our forbearance policy in 2016 as described in the Forbearance summary of the Santander UK group level  credit risk review section.
Applying these exit criteria to our forbearance stock at 31 December 2015, the loans reported as forborne would reduce by £127m to £418m. The exit criteria impact was partially offset by an increase in the stock position of
forbearance due to the inflows in the year in our SME and mid corporate portfolio.

The accounts in forbearance as a percentage of the portfolio reduced to 2.2%
(2015: 2.4%). At 31 December 2016, 78% (2015: 88%) of the cumulative forbearance stock had entered forbearance before default.

Global
Corporate Banking

At 31 December 2016, there were two forborne cases totalling £21m (2015: one case totalling £10m), of which £10m
(2015: £10m) was classified as NPL.

Corporate Centre

At 31 December 2016 and 2015 we had only made forbearance arrangements for the Legacy Portfolios in run-off.

At 31 December 2016, the cumulative forbearance stock in our Legacy Portfolios in run-off reduced by 69% to £37m (2015: £120m). This decrease was partly
due to the disposal of several aviation and shipping deals as well as the application of an exit criteria to our forbearance policy in 2016 as described above. Applying these exit criteria to our forbearance stock at 31 December 2015, the loans
reported as forborne would reduce by £39m to £81m.





78Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





PORTFOLIOS OF PARTICULAR INTEREST

Introduction(unaudited)

Some types of lending
have higher risk and others stand out for different reasons. In the section below we provide further details of our Commercial Real Estate and Social Housing portfolios.



|                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|---------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                       | 
|Product                |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                       | 
|Commercial Real Estate |  | The Commercial Real Estate market experienced a challenging
environment in the immediate years after the last financial crisis and has previously seen regular cyclical downturns. In addition to the disclosures on the Commercial Real Estate portfolio earlier in this section, we include below more detail on
credit management, credit performance, and LTV and sector analyses.                                                                                                                                             
|                       | 
|Social Housing         |  | The Social Housing sector in the UK is critical in ensuring the supply of affordable housing
across the country. Housing associations now play a prominent role in addressing the UKs shortage of housing stock across all tenures. The sector benefits from a zero-loss default history aided by its regulated nature. We hold a significant
position in this market. Continued investment in this sector is seen as a direct way to support the UK and, indirectly, the wider community initiatives undertaken by our customers.

Commercial Real Estate

Commercial Real Estate  credit performance

The table below shows the
main Commercial Real Estate credit performance metrics at 31 December 2016 and 2015:



|     |  |  |                    |     |  |  |         |        |  |  |              |     |  |  |                |     |  |  |                     |  |  |  |                              | 
|---- |  |  | ------------------ | --- |  |  | ------- | ------ |  |  | ------------ | --- |  |  | -------------- | --- |  |  | ------------------- |  |  |  | ---------------------------- | 
|     |  |  | Customer loans £bn | (1) |  |  | NPLs £m | (2)(3) |  |  | NPL 
ratio
% | (4) |  |  | NPL coverage % | (5) |  |  | Gross write-offs £m |  |  |  | Impairmentloss allowances £m | 
|2016 |  |  | 9.0                |     |  |  | 180     |        |  |  | 2.00         |     |  |  | 32             |     |  |  | 1                   |  |  |  | 58                           | 
|2015 |  |  | 9.2                |     |  |  | 168     |        |  |  | 1.83         |     |  |  | 43             |     |  |  | 13                  |  |  |  | 72                           | 



|(1) | Comprises commercial real estate drawn loans in the business banking portfolio of our Retail Banking segment of £365m (2015: £447m) and in the Commercial Real Estate portfolio of our Commercial Banking
segment of £8,678m (2015: £8,726m).
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | We define NPLs in the Credit risk management section.
|--- | -------------------------------------------------------

|(3) | All NPLs continue accruing interest.
|--- | ------------------------------------

|(4) | NPLs as a percentage of customer loans.
|--- | ---------------------------------------

|(5) | Impairment loss allowances as a percentage of NPLs. Impairment loss allowances relate to early arrears and performing assets (i.e. the IBNO provision) as well as NPLs, so the ratio can exceed 100%.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

2016 compared to 2015(unaudited)

At 31 December 2016, our non-performing loan ratio was 2.00% (2015: 1.83%) reflecting our conservative credit risk policy. The increase in ratio
was due to a loan of £50m that moved to non-performance which was partially offset by a number of exits on legacy cases. The £50m loan that moved to non-performance has fully repaid in 2017 and without this case non-performing loans
would have decreased at 31 December 2016. Commercial Real Estate loans written before 2009 totalled £543m (2015: £692m). The pre-2009 loans were written on market terms which, compared with more recent times and following a
significant tightening in our lending criteria, included higher original LTVs, lower interest coverage and exposure to development risk.

Commercial Real Estate
 LTV analysis

The tables below show the LTVs (based on the drawn balance and our latest estimate of the propertys current value) of the portfolio at
31 December 2016 and 2015:



|                                |  |      |       |  |   |  |     |      |  |  |    |  |  |   |       |  |  |  |     | 
|------------------------------- |  | ---- | ----- |  | - |  | --- | ---- |  |  | -- |  |  | - | ----- |  |  |  | --- | 
|Loans and advances to customers |  | 2016 |       |  |   |  |     | 2015 | 
|                                |  | £m   |       |  | % |  |     |      |  |  | £m |  |  | % |      
|<=70%                           |  |      | 7,886 |  |   |  | 88  |      |  |  |    |  |  |   | 7,841 |  |  |  | 86  | 
|>70100%                        |  |      | 194   |  |   |  | 2   |      |  |  |    |  |  |   | 291   |  |  |  | 3   | 
|>100% i.e. negative equity      |  |      | 88    |  |   |  | 1   |      |  |  |    |  |  |   | 45    |  |  |  |    | 
|Standardised
portfolio(1)       |  |      | 652   |  |   |  | 7   |      |  |  |    |  |  |   | 815   |  |  |  | 9   | 
|Total with collateral           |  |      | 8,820 |  |   |  | 98  |      |  |  |    |  |  |   | 8,992 |  |  |  | 98  | 
|Development loans               |  |      | 223   |  |   |  | 2   |      |  |  |    |  |  |   | 181   |  |  |  | 2   | 
|                                |  |      | 9,043 |  |   |  | 100 |      |  |  |    |  |  |   | 9,173 |  |  |  | 100 | 
|                                |  |      |       |  |   |  |     |      |  |  |    |  |  |   |       |  |  |  |     | 
|NPLs                            |  | 2016 |       |  |   |  |     | 2015 | 
|                                |  | £m   |       |  | % |  |     |      |  |  | £m |  |  | % |      
|<=70%                           |  |      | 9     |  |   |  | 5   |      |  |  |    |  |  |   | 27    |  |  |  | 16  | 
|>70100%                        |  |      | 74    |  |   |  | 41  |      |  |  |    |  |  |   | 72    |  |  |  | 43  | 
|>100% i.e. negative equity      |  |      | 74    |  |   |  | 41  |      |  |  |    |  |  |   | 44    |  |  |  | 26  | 
|Standardised
portfolio(1)       |  |      | 5     |  |   |  | 3   |      |  |  |    |  |  |   | 7     |  |  |  | 4   | 
|Total with collateral           |  |      | 162   |  |   |  | 90  |      |  |  |    |  |  |   | 150   |  |  |  | 89  | 
|Development loans               |  |      | 18    |  |   |  | 10  |      |  |  |    |  |  |   | 18    |  |  |  | 11  | 
|                                |  |      | 180   |  |   |  | 100 |      |  |  |    |  |  |   | 168   |  |  |  | 100 | 



|(1) | Consists of smaller value transactions, mainly commercial mortgages.
|--- | --------------------------------------------------------------------





Santander UK plc79



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##### Table of Contents



Annual Report 2016

Risk review









Commercial Real Estate  sector analysis

The table below shows the sector
analysis of the portfolio at 31 December 2016 and 2015:



|                          |  |      |       |  |   |  |     |      |  |  |    |  |  |   |       |  |  |  |     | 
|------------------------- |  | ---- | ----- |  | - |  | --- | ---- |  |  | -- |  |  | - | ----- |  |  |  | --- | 
|Sector                    |  | 2016 |       |  |   |  |     | 2015 | 
|                          |  | £m   |       |  | % |  |     |      |  |  | £m |  |  | % |      
|Office                    |  |      | 2,359 |  |   |  | 26  |      |  |  |    |  |  |   | 2,071 |  |  |  | 23  | 
|Retail                    |  |      | 1,739 |  |   |  | 19  |      |  |  |    |  |  |   | 1,813 |  |  |  | 20  | 
|Industrial                |  |      | 1,274 |  |   |  | 14  |      |  |  |    |  |  |   | 1,385 |  |  |  | 15  | 
|Residential               |  |      | 1,016 |  |   |  | 11  |      |  |  |    |  |  |   | 1,029 |  |  |  | 11  | 
|Mixed use                 |  |      | 1,184 |  |   |  | 13  |      |  |  |    |  |  |   | 1,073 |  |  |  | 12  | 
|Student accommodation     |  |      | 224   |  |   |  | 3   |      |  |  |    |  |  |   | 230   |  |  |  | 2   | 
|Hotels and leisure        |  |      | 389   |  |   |  | 5   |      |  |  |    |  |  |   | 460   |  |  |  | 5   | 
|Other                     |  |      | 206   |  |   |  | 2   |      |  |  |    |  |  |   | 297   |  |  |  | 3   | 
|Standardised
portfolio(1) |  |      | 652   |  |   |  | 7   |      |  |  |    |  |  |   | 815   |  |  |  | 9   | 
|                          |  |      | 9,043 |  |   |  | 100 |      |  |  |    |  |  |   | 9,173 |  |  |  | 100 | 



|(1) | Consists of smaller value transactions, mainly commercial mortgages.
|--- | --------------------------------------------------------------------

2016 compared to 2015(unaudited)

The Commercial Real Estate
portfolio of £9,043m (2015: £9,173m) is well diversified across sectors, with no significant regional or single name concentration, representing 33% (2015: 35%) of our total lending to corporates and 4% (2015: 5%) of total customer
loans. Customer loans decreased as we actively manage exposures to certain segments in line with our proactive risk management practices.

At 31 December 2016,
the LTV profile of the portfolio remained conservative with £7,886m (2015: £7,841m) of the non-standardised portfolio assets at or below 70% LTV.

Loans
with development risk were only 2% (2015: 2%) of the total Commercial Real Estate portfolio. Development lending is typically on a non-speculative basis with significant pre-lets in place and/or pre-sales in place.

In 2016, no new business was written above 70% LTV, and 95% was written at or below 60% LTV . At 31 December 2016, the average LTV of the non-standardised
portfolio, weighted by exposure, was 50% (2015: 52%). The weighted average LTV of new deals in 2016 was 48% (2015: 52%).

The average loan balance at
31 December 2016 was £4.8m (2015: £4.2m) and the top ten exposures made up 8% (2015: 8%) of the total Commercial Real Estate portfolio exposure.

Commercial Real Estate  refinancing risk

As part of our annual review
process, for Commercial Real Estate loans approaching maturity, we look at the prospects of refinancing the loan on current market terms and applicable credit policy. Where this seems unlikely we put the case on our Watchlist.

At 31 December 2016, Commercial Real Estate loans of £1,408m (2015: £1,367m) were due to mature within 12 months. Of these, £161m, i.e. 11% (2015:
£142m, i.e. 10%) had an LTV ratio higher than is acceptable under our current credit policy. At 31 December 2016, £149m of this (2015: £138m) had been put on our Watchlist or recorded as NPL and had an impairment loss
allowance of £31m (2015: £20m).

Social Housing

At 31 December 2016 and 2015, our total Social Housing exposure in Commercial Banking and Corporate Centre was:



|                   |  |      |         |  |  |  |         |      |  |  |  |  |  |  |            |  |  |  |         | 
|------------------ |  | ---- | ------- |  |  |  | ------- | ---- |  |  |  |  |  |  | ---------- |  |  |  | ------- | 
|                   |  | 2016 |         |  |  |  |         | 2015 | 
|                   |  |      | Drawn£m |  |  |  | Total£m |      |  |  |  |  |  |  | Drawn(1)£m |  |  |  | Total£m | 
|Commercial Banking |  |      | 1,897   |  |  |  | 3,069   |      |  |  |  |  |  |  | 1,274      |  |  |  | 2,169   | 
|Corporate Centre   |  |      | 5,442   |  |  |  | 6,611   |      |  |  |  |  |  |  | 6,216      |  |  |  | 7,648   | 
|                   |  |      | 7,339   |  |  |  | 9,680   |      |  |  |  |  |  |  | 7,490      |  |  |  | 9,817   | 



|(1) | These numbers are unaudited.
|--- | ----------------------------





80Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks









Market risk  Overview(unaudited)
 Market risk comprises trading market risk and banking market risk.
 Trading market risk is the risk of losses in on and off-balance sheet trading positions, due to
movements in market prices or other external factors.  Banking market risk is the risk of loss of
income or economic value due to changes to interest rates in the banking book or to changes in exchange rates, where such changes would affect our net worth through an adjustment to revenues, assets, liabilities and off-balance sheet exposures in
the banking book.  In this section, we set out which of our assets and liabilities are exposed to
trading and banking market risk. Then we explain how we manage these risks and discuss our key market risk metrics. 
Key metrics(unaudited)
  NIM sensitivity to +/-50bps parallel shocks increased to £240m and £(82)m respectively (2015: £131m and £39m) in absolute terms 
The movement in NIM sensitivities in 2016 was largely due to market volatility and reduced levels of the yield curve following the UK referendum on EU membership and the
subsequent Base Rate cut. This, combined with retail liability products re-pricing (including changes to the terms of our 1I2I3 Current Account and some variable rate savings products) and changes in underlying management assumptions, has increased
NIM sensitivities to both up and down 50bps parallel shocks.  
Economic Value of Equity (EVE) sensitivity to +/-50bps parallel shocks decreased to £54m and £(30)m respectively (2015: £86m and
£(54)m) in absolute terms  The reduction in EVE sensitivities in 2016 largely
reflected our hedging activity to mitigate the risks of a continuing low interest rate environment, the increased volume of fixed rate assets left unhedged as well as the changes in the underlying management assumptions used for risk measurement
purposes mentioned above.  
Available-for-sale securities three month stressed loss increased to £280m (2015: £259m)
 The increase at 31 December 2016 was mainly due to portfolio growth from new asset purchases and
a rise in the GBP value of foreign currency denominated assets following the UK referendum on EU membership.






Santander UK plc81



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##### Table of Contents



Annual Report 2016

Risk review









BALANCE SHEET ALLOCATION BY MARKET RISK CLASSIFICATION

We analyse our assets and liabilities exposed to market risk between trading and banking market risk as follows:



|                                               |  |                            |        |  |           |  |         |                            |  |  |         |  |  |           |  |  |           |  |        |             |  |  |                  |  |  |  |         |  |  |                                                                  
|---------------------------------------------- |  | -------------------------- | ------ |  | --------- |  | ------- | -------------------------- |  |  | ------- |  |  | --------- |  |  | --------- |  | ------ | ----------- |  |  | ---------------- |  |  |  | ------- |  |  | -----------------------------------------------------------------
|                                               |  |                            |        |  | 2016      |  |         |                            |  |  |         |  |  |           |  |  | 2015      |  |        |             |  |  |                 
|                                               |  | Market risk classification |        |  |           |  |         | Market risk classification |  |  |        
|                                               |  | Trading£m                  |        |  | Banking£m |  |         | Total£m                    |  |  |         |  |  | Trading£m |  |  | Banking£m |  |        | Total    £m |  |  | Key risk factors
|Assets subject to market risk                  |  |                            |        |  |           |  |         |                            |  |  |         |  |  |           |  |  |           |  |        |             |  |  |                  |  |  |  |         |  |  |                                                                  
|Cash and balances at central banks             |  |                            |       |  |           |  | 17,107  |                            |  |  | 17,107  |  |  |           |  |  |           |  |       |             |  |  | 16,842           |  |  |  | 16,842  |  |  | Interest rate, foreign exchange                                  
|Trading assets                                 |  |                            | 30,035 |  |           |  |        |                            |  |  | 30,035  |  |  |           |  |  |           |  | 23,961 |             |  |  |                 |  |  |  | 23,961  |  |  | Equity, foreign exchange, interest rate                          
|Derivative financial instruments               |  |                            | 18,101 |  |           |  | 7,370   |                            |  |  | 25,471  |  |  |           |  |  |           |  | 17,698 |             |  |  | 3,213            |  |  |  | 20,911  |  |  | Equity, foreign exchange, interest rate                          
|Financial assets designated at fair value      |  |                            | 516    |  |           |  | 1,624   |                            |  |  | 2,140   |  |  |           |  |  |           |  | 438    |             |  |  | 1,960            |  |  |  | 2,398   |  |  | Interest rate, credit spread                                     
|Loans and advances to banks                    |  |                            |       |  |           |  | 4,348   |                            |  |  | 4,348   |  |  |           |  |  |           |  |       |             |  |  | 3,548            |  |  |  | 3,548   |  |  | Foreign exchange, interest rate                                  
|Loans and advances to customers                |  |                            |       |  |           |  | 199,738 |                            |  |  | 199,738 |  |  |           |  |  |           |  |       |             |  |  | 198,045          |  |  |  | 198,045 |  |  | Interest rate                                                    
|Loans and receivables securities               |  |                            |       |  |           |  | 257     |                            |  |  | 257     |  |  |           |  |  |           |  |       |             |  |  | 52               |  |  |  | 52      |  |  | Foreign exchange, interest rate                                  
|Available-for-sale securities                  |  |                            |       |  |           |  | 10,561  |                            |  |  | 10,561  |  |  |           |  |  |           |  |       |             |  |  | 9,012            |  |  |  | 9,012   |  |  | Foreign exchange, interest rate, inflation, credit spread        
|Held-to-maturity investments                   |  |                            |       |  |           |  | 6,648   |                            |  |  | 6,648   |  |  |           |  |  |           |  |       |             |  |  |                 |  |  |  |        |  |  | Interest rate                                                    
|Macro hedge of interest rate risk              |  |                            |       |  |           |  | 1,098   |                            |  |  | 1,098   |  |  |           |  |  |           |  |       |             |  |  | 781              |  |  |  | 781     |  |  | Interest rate                                                    
|Retirement benefit assets                      |  |                            |       |  |           |  | 398     |                            |  |  | 398     |  |  |           |  |  |           |  |       |             |  |  | 556              |  |  |  | 556     |  |  | Equity, foreign exchange, interest rate, inflation, credit spread
|                                               |  |                            | 48,652 |  |           |  | 249,149 |                            |  |  | 297,801 |  |  |           |  |  |           |  | 42,097 |             |  |  | 234,009          |  |  |  | 276,106 |  |  |                                                                  
|                                               |  |                            |        |  |           |  |         |                           
|Liabilities subject to market risk             |  |                            |        |  |           |  |         |                            |  |  |         |  |  |           |  |  |           |  |        |             |  |  |                  |  |  |  |         |  |  |                                                                  
|Deposits by banks                              |  |                            |       |  |           |  | 9,769   |                            |  |  | 9,769   |  |  |           |  |  |           |  |       |             |  |  | 8,278            |  |  |  | 8,278   |  |  | Foreign exchange, interest rate                                  
|Deposits by customers                          |  |                            |       |  |           |  | 177,172 |                            |  |  | 177,172 |  |  |           |  |  |           |  |       |             |  |  | 164,074          |  |  |  | 164,074 |  |  | Interest rate                                                    
|Trading liabilities                            |  |                            | 15,560 |  |           |  |        |                            |  |  | 15,560  |  |  |           |  |  |           |  | 12,722 |             |  |  |                 |  |  |  | 12,722  |  |  | Equity, foreign exchange, interest rate                          
|Derivative financial instruments               |  |                            | 20,018 |  |           |  | 3,085   |                            |  |  | 23,103  |  |  |           |  |  |           |  | 17,950 |             |  |  | 3,558            |  |  |  | 21,508  |  |  | Equity, foreign exchange, interest rate                          
|Financial liabilities designated at fair value |  |                            | 1,665  |  |           |  | 775     |                            |  |  | 2,440   |  |  |           |  |  |           |  |       |             |  |  | 2,016            |  |  |  | 2,016   |  |  | Interest rate, credit spread                                     
|Debt securities in issue                       |  |                            |       |  |           |  | 50,346  |                            |  |  | 50,346  |  |  |           |  |  |           |  |       |             |  |  | 49,615           |  |  |  | 49,615  |  |  | Foreign exchange, interest rate                                  
|Subordinated liabilities                       |  |                            |       |  |           |  | 4,303   |                            |  |  | 4,303   |  |  |           |  |  |           |  |       |             |  |  | 3,885            |  |  |  | 3,885   |  |  | Foreign exchange, interest rate                                  
|Macro hedge of interest rate risk              |  |                            |       |  |           |  | 350     |                            |  |  | 350     |  |  |           |  |  |           |  |       |             |  |  | 110              |  |  |  | 110     |  |  | Interest rate                                                    
|Retirement benefit obligations                 |  |                            |       |  |           |  | 262     |                            |  |  | 262     |  |  |           |  |  |           |  |       |             |  |  | 110              |  |  |  | 110     |  |  | Equity, foreign exchange, interest rate, inflation, credit spread
|                                               |  |                            | 37,243 |  |           |  | 246,062 |                            |  |  | 283,305 |  |  |           |  |  |           |  | 30,672 |             |  |  | 231,646          |  |  |  | 262,318 |  |  |                                                                  

We classify assets or liabilities as trading market risk (in total or just in part) as follows:



|                                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|--------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                          | 
|Balance sheet classification                              |  | Market risk classification                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                                          | 
|Trading assets and liabilities                            |  | We classify all our trading portfolios as trading market risk. This is because we are planning to sell or repurchase them in the near future or they belong to a group of
financial instruments we usually hold for the short-term. For more on this, see Notes 11 and 28 to the Consolidated Financial Statements.                                                                                                                                                                                                                                                                                                                    
|Financial assets and liabilities designated at fair value |  | We classify a portfolio of roll-up mortgages (loans which are repaid with interest once the borrower vacates the property) as trading market risk. We also classify our
warrant programmes, our Global Structured Solutions Programme and structured customer deposits as trading market risk. This is because they are managed on a fair value basis in line with a documented strategy, and data on them is provided on that
basis to management. For more, see Notes 13 and 29 to the Consolidated Financial Statements. We classify all our other financial assets and liabilities designated at fair value as banking market risk.
|Derivative financial instruments                          |  | For accounting purposes,
we classify derivatives as held for trading unless they are designated as being in a hedging relationship. Most of our derivative exposures arise from sales and trading activities and are treated as trading market risk. We treat derivatives not risk
managed on a trading intent basis as banking market risk. They include non-qualifying hedging derivatives and derivatives qualifying for fair value and cash flow hedge accounting. For more on derivatives in hedge accounting relationships, and our
use of non-qualifying hedges, see Note 12 to the Consolidated Financial Statements.          





82Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





TRADING MARKET RISK

OUR KEY TRADING MARKET RISKS(unaudited)

Our main exposure to trading market risk is in Global Corporate Banking and is an inherent part of
providing financial services for our customers. It comes from providing derivative products and services to corporate and business customers. It also comes from our short-term market activities and hedging of structured products designed for onward
sale to retail and wholesale investors. The exposures are mainly affected by market movements in interest rates, equities, credit spreads, and foreign exchange. We have no exposures in Retail Banking, Commercial Banking or Corporate Centre.

Trading market risk can reduce our net income. Its effect can be seen in our Consolidated Income Statement, where it appears in the Net trading and other
income line, under Net trading and funding of other items by the trading book.

TRADING MARKET RISK MANAGEMENT

Risk appetite

Our framework for dealing with market risk
is part of our overall Risk Framework. The market risk Framework sets out our high-level arrangements and minimum standards for managing, controlling and overseeing trading market risk. Our Risk Appetite sets the controls, risk limits and key risk
metrics for trading market risk. The key risk metrics include a stress economic loss limit and risk-factor stress scenarios. We report these key metrics to the Board Risk Committee and the Executive Risk Control Committee each month.

Risk measurement(unaudited)

We have a range of ways of measuring trading market risk, but one of the most important is a
statistical measure based on a historical simulation of events called Value at Risk (VaR).

VaR



|    |  |                                                                                                                                                                                                                                        
|--- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|   
|VaR
|    | 
|   |  | VaR estimates the maximum losses that we might suffer because
of unfavourable changes in the markets.                                                                                                                                  
|    | 
|   |  | To calculate VaR we run a historical simulation, at a given
confidence level, over a specified time period.                                                                                                                            
|    | 
|   |  | We use one or two years of daily price history, with each day
given equal weighting.                                                                                                                                                   
|    | 
|   |  | This means we include most market risk factors that could
make a difference, and it gives us a consistent way of assessing risk for all these factors in all our portfolios.                                                           
|    | 
|   |  | We work with three main types of VaR, which all use the same calculation models. They are
Internal VaR, Regulatory VaR and Stressed VaR. We have governance and controls for all forms of VaR, and we regularly review and assess them.



|             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|------------ |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|            
|Internal VaR
|             | 
|            |  | We use this to calculate the total VaR in our trading book.
It covers all the risk classes: interest rate, equity, credit (spread) and foreign exchange. We use two years of data for this simulation.                                                                                                                                                                                                                                                            
|             | 
|            |  | Like the rest of Banco Santander, we use a time horizon of
one day and a confidence level of 99%. For any given days trading position, we would expect to suffer losses greater than the VaR estimate 1% of the time  once every 100 trading days, or two to three times a year.                                                                                                                                                                                
|             | 
|            |  | For Internal VaR, we also calculate a time-weighted VaR using
Banco Santanders method. This gives more weight to the most recent days in the last two years, which means VaR changes more quickly in line with current market volatility. That gives us a better indication of how the markets behaviour is
changing, mitigating some limitations of VaR.                                                                                                       
|             | 
|            |  | We measure Internal VaR every day, comparing the equally-weighted result with the
time-weighted result and report the higher against the Santander UK and business unit level limits. These Santander UK limits are approved by the Executive Risk Control Committee. We also report our equally-weighted VaR against asset class and
individual desk level limits. Whenever we find a limit has been exceeded, we report it, following the market risk framework.



|                                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                               
|Regulatory VaR and Stressed VaR
|                                | 
|                               |  | We use these VaR models to calculate how much capital we need
to hold for trading market risk. For these calculations, we only look at the factors for which we hold approval from the PRA. For credit and foreign exchange  factors which are not approved by the PRA for our VaR capital models  we use
the standardised approach to calculate how much capital to hold. For more on this, see the Capital requirement measures section.                                                     
|                                | 
|                               |  | For Regulatory VaR, we use a time horizon of ten days and a
confidence level of 99%. To calculate the ten-day time horizon, we use the one-day VaR multiplied by the square root of ten. This is the industry standard approach to scaling known as the square root of time approach. We use the same two
years of history as with Internal VaR. Stressed VaR is the same, except that we use only one year of history, from a time when markets were stressed relative to our current portfolio.
|                                | 
|                               |  | The PRA also assesses Regulatory VaR and Stressed VaR.                                                                                                                                                                                                                                                                                                                                                                                                                                             





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Annual Report 2016

Risk review









The limitations of VaR

The main limitation of VaR is that it assumes what
happened in the past is a reliable way to predict what will happen in the future. If something that affected the markets over the past two years is no longer relevant, then the actual value at risk could be much more or less than the VaR predicts.
Sometimes it is obvious that the past data will not predict the future: there is unlikely to be enough data on the history of the market if a product is brand new, for example. In that case, we use proxy data  calculations of what might have
happened if the product had existed. That helps make VaR data more complete, but it makes it less accurate. We control and keep a record of how we use proxy data.

Another limitation is that VaR is based on positions at the end of the business day. So the actual value at risk at 1pm could be higher than that at the end of the day.
And, when we are calculating a ten-day time horizon using the square root of time approach, it means we do not capture the actual ten-day price movements. This can lead to under or over estimating the ten-day result. But we analyse this
every quarter and the analysis is also sent to the PRA.

There is also the fact that VaR gives no guide to how big the loss could be on the 1% of trading days that
it is greater than the VaR. To make up for that (and for other reasons), we use stress testing and expected shortfall analysis, which we explain later in this section.

Using a time horizon of one day means VaR does not tell us everything about exposures that we cannot liquidate or hedge within a day, or products with infrequent pricing
or whose structures are more complex. We monitor those exposures using illiquid risks metrics (explained in Other ways of measuring risk) and stress testing. In addition to using the illiquid risks metrics, to ensure such exposures are
adequately included in our regulatory capital requirements, we have developed the Risks Not in VaR (RNIV) framework, in line with the regulatory requirement.

In
general, VaR takes account of the main ways risk factors affect each other, and the way most market movements affect valuations. But the more complex the products, and the larger the markets current movements, the less well the model is likely
to fare.

Back-testing  comparing VaR estimates with reality

Every
day, we back-test the one day 99% Internal and Regulatory VaR. That means looking at the VaR estimates for the last 250 days and seeing how they compare to the actual profits and losses. Or, to be more precise, how they compare to the market
risk-related revenue, as the CRR and PRA define it. It is not normally possible to back-test the Stressed VaR model, because it is not intended to tell us anything about our performance in normal conditions.

To back-test VaR, we use a one-day time horizon. Our back-testing looks at two different types of profit and loss metrics:

| | Actual: trading profit and loss, less fees, commissions, brokerage, reserves that are not related to market risk, and Day One sales profits
|- | -------------------------------------------------------------------------------------------------------------------------------------------

| | Hypothetical: like the Actual type but also excluding intra-day figures and the effects of the passage of time. It is, in effect, just leaving the pure market risk driven effects on the profit and
loss.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Exceptions

Back-testing allows us to identify
exceptions  times when the predictions were out of line with what happened. We can then look for trends in these exceptions, which can help us decide whether we need to recalibrate our VaR model. The CRR sets out criteria for how many
exceptions are acceptable in the Regulatory VaR model. The PRAs Supervisory Statements clarify the requirements further. If there are five or more exceptions in 250 days, then points are added to our capital requirement multiplier. In 2016, as
in 2015, no points were added to our multiplier, and we did not find any trends in the exceptions we experienced.

Other ways of measuring risk

As well as VaR, we use the following methods to measure risk:



|                                 |  |                                                                                                                                                                                                                                                                                                                                                        
|-------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Method                           |  | Description                                                                                                                                                                                                                                                                                                                                            
|                                 | 
|Profit and loss                  |  | The value of our tradeable instruments, such as shares and
bonds, changes constantly. We report our profits and losses from them every day.                                                                                                                                                                                                            
|                                 | 
|Non-statistical measures         |  | We also have ways of measuring risk that do not depend on
statistics. That includes looking at how sensitive we are to the variables we use to value our market risk positions. We record all our market risk exposures, set limits to the sensitivities for each, and then check every day whether we are staying
within those limits.                
|                                 | 
|Illiquid risks                   |  | The financial instruments that we cannot sell or hedge in a
day are classified as illiquid risks. We measure and monitor those differently depending on how long they would take to sell or hedge. There are three categories: less than a month, one to six months, or greater than six months. We check
each category every day against our limits.
|                                 | 
|Expected shortfall (ES)
analysis |  | We also use a measurement called ES analysis. It goes some way to mitigate the limitations of
the VaR model. ES allows us to better measure how big the loss could be on the 1% of the trading days that it is greater than VaR.                                                                                                                       





84Santander UK plc



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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Stress testing

The Basel Capital Accord underlined that stress testing is an essential part of risk management. It helps us to measure and control the risk of losses in difficult,
volatile or unusual markets, and makes us more transparent as the scenarios are easy to understand in headline terms.

Stress testing scenarios

The scenarios we use for stress testing are part of our process for setting our trading market risk appetite, and they are central to the monthly Board Risk Appetite
reporting. These scenarios are also part of the daily processes for setting and monitoring risk management limits. The scenarios we create are partly inspired by past events, like the global financial crisis. But they also include plausible ways
that unusual market conditions could occur in future. This includes changes in interest rates, equity prices, exchange rates and credit spreads.

Some scenarios are
more severe than others. We consider them all, along with VaR, so that we have a more complete and accurate idea of our overall risk profile. When we set the sizes of the shocks (sudden market changes) in each scenario, we look at how
long each different type of risk would last. This is because we can sell some assets more easily than others. If it would take a long time to sell a particular asset in the stressed circumstances, we need to apply a correspondingly large shock to
that asset (as prices will move further over a longer time period). That helps us to see how different amounts of liquidity in the markets would affect us if a stress event, such as an equity crash, happened. It is important to make sure
that the stress result we report is as realistic as possible.

How we use stress testing

We use limits to manage how much risk we take. They are expressed as how much we could lose in a stress event. We need to make sure the effects of potential poor market
conditions do not exceed the Risk Appetite set by the Board. Each of our desks uses stress testing as part of their daily risk management metrics. We regularly inform senior managers  including the Executive Risk Control Committee and the
Board Risk Committee  about the results of our stress calculations, based on our current positions.

Capital requirement measures

Whenever we make changes to our models, we assess their effect on our capital requirements. Sometimes that means we need to tell the PRA and get their approval before we
can make the change.



|                                     |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|------------------------------------ |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Method                               |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                                     | 
|The Internal Models
Approach (IMA)   |  | The PRA has given us permission to use the IMA, in line with
CRR, and every three months the PRA reviews what we are doing. The IMA means we can use Regulatory and Stressed VaR and RNIV to calculate the trading market risk capital requirement for the risk factors and businesses that we have PRA approval
for.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                     | 
|The standardised
approach            |  | For risk factors and businesses not included in the IMA, we
use the standardised approach set out by the CRR and PRA Supervisory Statements. At 31 December 2016, this amounted to 10% of our total market risk capital requirement.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|                                     | 
|Stressed versus
Regulatory VaR       |  | Stressed VaR is the biggest part of our trading market risk
capital requirements. In 2016, and 2015 it was an average of five times bigger than the Regulatory VaR part. The factors that had the biggest effect on Stressed VaR in 2016 and 2015 were interest rate delta and interest rate basis. (Further
explanation of each of those factors in the footnotes to the table in the Trading market risk review section.) 
The difference is caused by the way the market was behaving during the time the Stressed VaR data covers. We regularly check the stress period we use, to make sure we are
using the worst period of stress since 2007 that is relevant to our portfolio.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                     | 
|Risks Not in VaR (RNIV)
risk capital |  | These risk factors can arise when there is not enough (or no) market data from the past, or
when the quality of the data is not good enough. They tend to be for products that are not priced regularly, or whose risk structure is more complex. 
In 2016, RNIV risk factors made up, on average, less than 4% (2015: 5%) of our IMA capital requirements for trading market risk. The biggest individual risk factor is
dividend risk, caused by changes in market expectations about dividends. The VaR approach does not capture this risk very well because of the illiquid nature of the risk factor. We normally find new RNIVs by analysing profit and loss, and new
products. Then we include them in our calculation of our capital requirement, whether or not they are material at the time, and inform the regulator in the appropriate manner. 
We can use two approaches to calculate how much RNIV capital we should hold, depending on what kind of market data is available. The first approach means doing a
calculation like those for Regulatory VaR and Stressed VaR. For this approach we also use a multiplication factor, following the CRR and PRA rules. The second approach is stress-based, using sensitivities and plausible stressed market moves. At the
moment, we only have stress-based RNIVs. And each individual RNIV value is independent, so it does not benefit from diversification in the capital requirements calculation.

Risk mitigation(unaudited)

We manage and control trading market risk within clear parameters. We measure and monitor our risk
exposures against these limits. There are specific levels that trigger relevant teams to take action or alert people in other functions. This means we can limit the impact of any negative market movements, while also improving our earnings. We keep
the business units that originate trading market risk separate from the functions responsible for managing, controlling and overseeing risk.

Risk monitoring and reporting(unaudited)

We document and maintain a complete set of written policies, procedures and processes to help
identify, assess, manage and report trading market risk.





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Annual Report 2016

Risk review









TRADING MARKET RISK REVIEW

VaR

This table shows our Internal VaR for exposure to each of the main classes of risk for 2016 and 2015. The VaR figures show how much the fair values of all our
tradeable instruments could have changed. Since trading instruments are recorded at fair value, these are also the amounts by which they could have increased or reduced our net income.



|                             |  |                   |      |   |         |  |      |                  |  |  |         |  |  |                  |      |   |  |  |      |                 |  |  |         |  |  |  |     |  |         |  |     |         |  |  |  |  |  |  |     |  |  |  |     | 
|---------------------------- |  | ----------------- | ---- | - | ------- |  | ---- | ---------------- |  |  | ------- |  |  | ---------------- | ---- | - |  |  | ---- | --------------- |  |  | ------- |  |  |  | --- |  | ------- |  | --- | ------- |  |  |  |  |  |  | --- |  |  |  | --- | 
|Trading instruments          |  | Year-end exposure |      |   |         |  |      | Average exposure |  |  |         |  |  | Highest exposure |      |   |  |  |      | Lowest exposure | 
|                             |  | 2016
£m           |      |   | 2015
£m |  |      |                  |  |  | 2016
£m |  |  | 2015
£m          |      |   |  |  |      | 2016
£m         |  |  | 2015
£m |  |  |  |     |  | 2016
£m |  |     | 2015
£m | 
|Interest rate risks(1)       |  |                   | 2.9  |   |         |  | 2.0  |                  |  |  |         |  |  |                  | 2.5  |   |  |  | 2.8  |                 |  |  |         |  |  |  | 3.6 |  |         |  | 4.6 |         |  |  |  |  |  |  | 1.7 |  |  |  | 1.7 | 
|Equity risks(2)              |  |                   | 1.4  |   |         |  | 0.8  |                  |  |  |         |  |  |                  | 0.9  |   |  |  | 0.7  |                 |  |  |         |  |  |  | 1.5 |  |         |  | 1.1 |         |  |  |  |  |  |  | 0.6 |  |  |  | 0.5 | 
|Credit (spread) risks(3)     |  |                   |     |   |         |  |     |                  |  |  |         |  |  |                  |     |   |  |  |     |                 |  |  |         |  |  |  |    |  |         |  | 0.2 |         |  |  |  |  |  |  |    |  |  |  |    | 
|Foreign exchange risks       |  |                   | 1.5  |   |         |  | 0.1  |                  |  |  |         |  |  |                  | 1.4  |   |  |  | 0.1  |                 |  |  |         |  |  |  | 2.2 |  |         |  | 0.1 |         |  |  |  |  |  |  | 0.1 |  |  |  |    | 
|Correlation
offsets(4)       |  |                   | (2.3 | ) |         |  | (0.9 | )                |  |  |         |  |  |                  | (2.0 | ) |  |  | (0.9 | )               |  |  |         |  |  |  |    |  |         |  |    |         |  |  |  |  |  |  |    |  |  |  |    | 
|Total correlated one-day VaR |  |                   | 3.5  |   |         |  | 2.0  |                  |  |  |         |  |  |                  | 2.8  |   |  |  | 2.7  |                 |  |  |         |  |  |  | 3.6 |  |         |  | 4.7 |         |  |  |  |  |  |  | 1.7 |  |  |  | 1.6 | 



|(1) | This measures the effect of changes in interest rates and how volatile they are. The effects are on cash instruments, securities and derivatives. This includes swap spread risk (the difference between swap rates and
government bond rates), basis risk (changes in interest rate tenor basis) and inflation risk (changes in inflation rates).
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | This measures the effect of changes in equity prices, volatility and dividends on stock and derivatives.
|--- | --------------------------------------------------------------------------------------------------------

|(3) | This measures the effect of changes in the credit spread of corporate bonds and credit derivatives.
|--- | ---------------------------------------------------------------------------------------------------

|(4) | The highest and lowest exposures for each risk type did not necessarily happen on the same day as the highest and lowest total correlated one-day VaR. It is impossible to calculate a corresponding correlation offset
effect, so we have not included it in the table.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



LOGO

Back-testing(unaudited)

The graph below shows our one-day 99% Internal VaR compared to the Actual and Hypothetical profit and loss:



LOGO

2016 compared to 2015

The
back-testing exceptions that occurred in 2016 were driven by isolated events and no changes or recalibrations to the VaR model were deemed necessary. The exception at the end of December 2016 was driven by year-end demand for US dollars in the
foreign exchange swap market and a general lack of liquidity over the year-end. This resulted in a material widening of spreads in the very short end of US dollar-Japanese yen and US dollar cross currency swaps. These losses were reversed in the
first week of 2017 as forward rates normalised.





86Santander UK plc



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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





BANKING MARKET RISK

OUR KEY BANKING MARKET RISKS(unaudited)

Banking market risk mainly comes from providing banking products and services to customers 
as well as structural balance sheet exposures. It arises in all our business segments. In Retail Banking and Commercial Banking it arises as a by-product of writing customer business and we transfer most of these risks to Corporate Centre who manage
them. The only types of material banking market risk kept in Retail Banking and Commercial Banking are short-term mismatches due to forecasting variances in prepayment and launch risk  that is, where customers pre-pay loans before their
contractual maturity or do not take the expected volume of new products. In Global Corporate Banking, it arises from short term markets and lending to corporates, which we also transfer to Corporate Centre to manage. Corporate Centre also manages
our structural balance sheet exposures, such as foreign exchange and income statement volatility risk.

Our key banking market risks are:



|                                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|-------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Key risks                        |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                 | 
|Interest rate risk               |  | Yield curve risk:comes from timing mismatches in the
repricing of fixed and variable rate assets, liabilities and off-balance sheet instruments. It also comes from investing non-interest-bearing liabilities in interest-bearing assets. We mainly measure yield curve risk with Net Interest Margin (NIM)
and Economic Value of Equity (EVE) sensitivity analysis. We supplement this with other risk measures, like stress testing, and VaR. The NIM and EVE sensitivities cover all material yield curve risk in the banking book balance sheet.
 Basis risk:comes from pricing assets using a different rate index to the liabilities funding
them. We are exposed to basis risks associated with Base Rate, reserve rate linked assets we deposit with central banks, the Sterling Overnight Index Average (SONIA) rate, and LIBOR rates of different terms. We are particularly exposed to the
difference between Base Rate linked rates earned on customer assets, and wholesale (LIBOR-linked) rates paid on liabilities funding those assets.
|                                 | 
|Inflation and
spread risks       |  | This arises when the value of (or income from) our assets or
liabilities is affected by changes in inflation and credit spreads. We hold portfolios of securities for liquidity and investment purposes that are exposed to these risks. We account for these as available-for-sale securities. We recognise the
volatility in their fair value in Other comprehensive income, until they are sold or unless it reflects an impairment in the assets fair value, in which case we recognise it in income.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                                 | 
|Foreign exchange risk            |  | Our non-trading businesses operate mainly in sterling
markets, so we do not create significant foreign exchange exposures. The only exception is money we raise in foreign currencies, which we discuss in the Wholesale funding section.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                 | 
|Income statement
volatility risk |  | Most of our assets and liabilities in our banking book balance sheet are measured at amortised
cost. We sometimes manage their risk profile by using derivatives. As all derivatives are accounted for at fair value, the difference in accounting treatment can lead to volatility in the income statement. This happens even where the derivative is
an economic hedge of the asset or liability.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

BANKING MARKET RISK MANAGEMENT

Risk appetite

Our framework for dealing with market risk
is part of our overall Risk Framework. The market risk Framework sets out our high-level arrangements and minimum standards for managing, controlling and overseeing banking market risk. Our Risk Appetite sets the controls, risk limits and key risk
metrics for banking market risk. We articulate Risk Appetite by the income and value sensitivity limits we set in our Risk Appetite, and NIM and EVE sensitivity limits set by Banco Santander.

Risk measurement(unaudited)

For banking market risk, we mainly measure our exposures with NIM and EVE sensitivity analysis
 supported by the risk measures we explained in the Trading market risk management section. We also monitor our interest rate repricing gap.

NIM and EVE sensitivities

NIM and EVE sensitivity measures are commonly used
in the financial services industry. The calculations for NIM and EVE sensitivities involve many assumptions, including expected customer behaviour (such as early repayment of loans) and how interest rates may move. These assumptions are a key part
of the overall control framework, so we update and review them regularly. Our NIM and EVE sensitivities include the interest rate risk from all our banking book positions. Our banking book positions generate almost all our reported net interest
income.



|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|--------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NIM sensitivity
|                | 
|               |  | NIM sensitivity is an income-based measure we use to forecast
the changes to interest income and interest expense in different scenarios. It gives us a combined impact on net interest income over a given period  usually 12 months.                                                                                                                                                                                                                                                                                                                         
|                | 
|               |  | We calculate NIM sensitivity by simulating the NIM using two
yield curves. The difference between the two NIM totals is the NIM sensitivity.                                                                                                                                                                                                                                                                                                                                                                                                                    
|                | 
|               |  | Our main model assumptions are that:
   The balance sheet is dynamic, meaning it
includes the run-off of current assets and liabilities as well as retained and new business. 
  We use a behavioural balance sheet rather than contractual one. This means we adjust balances for behavioural
or assumed profile. We do this with most retail products whose behavioural maturity is less than the contractual maturity. This is usually because customers are exercising the option for early withdrawal or prepayment, or there is no
contractual maturity.







Santander UK plc87



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Annual Report 2016

Risk review











|                |  |                                                                                                                                                                                                              
|--------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|EVE sensitivity
|                | 
|               |  | We calculate EVE as the change in the net present value of
all the interest rate sensitive items in the banking book balance sheet for a defined set of instantaneous parallel shifts in the yield curve.    
|                | 
|               |  | We use a static balance sheet, all balance sheet items run-off according to their contractual,
behavioural or assumed run-off behaviour (whichever is appropriate), and there is no retained or new business.

The limitations of sensitivities

We use
sensitivities to measure the impact of standard, instantaneous, parallel shifts in relevant yield curves, using a 0% interest rate floor where needed. The advantage of using standard parallel shifts is they generally give us a constant measure of
the size of our market risk exposure, with a simple and consistent stress. This compares to specific scenarios like flat rates. The magnitude of flat rates depends on the shape of the current curve and the shift required to reach the
flat rate scenario. There is one exception to the relative simplicity of parallel shifts. In order to prevent negative interest rates, the yield curve may be floored at 0%. Using material parallel shocks does not always seem realistic,
or it might not necessarily test the scenarios that have the most impact on us. So we run non-parallel stress tests too  to calculate the impact of some plausible non-parallel scenarios, and over various time periods for income stresses
(usually one or three years).

Other ways of measuring risk

As well as
using sensitivities and stress tests, we can measure banking market risk using net notional positions. This can give us a simple expression of our exposure, although it generally needs to be combined with other risk measures to cover all aspects of
a risk profile, such as projected changes over time. The final metric we can use is VaR. VaR can be useful because it captures changes in economic values. However, VaR will not reflect the actual impact of most of our banking book assets and
liabilities on our income statement. This is because they are accounted for at amortised cost rather than fair value.

Stress testing

We use stress testing of market risk factors to complement the risk measurement we get from standard sensitivities.

Stress testing scenarios

Simple stress tests (like parallel shifts in relevant
curves) give us clear measures of risk control and a consistent starting point for setting limits. More complex, multi-factor and multi-time period stress tests can give us information about specific potential events and test various outcomes that
we might not capture through parallel stresses or VaR-type measures because of data or model limitations. We can also use stress tests to estimate losses in extreme market events beyond the confidence level used in VaR models. We can adapt stress
tests to reflect current concerns or market conditions quicker than we can with other risk measures, like VaR. We can include both individual business area stresses and Santander UK-wide scenarios.

Our stress tests fall into one of these categories:

| | Specific, deterministic stress tests that are not referenced to market history or expectations (parallel stresses of a given size, for example)
|- | -----------------------------------------------------------------------------------------------------------------------------------------------

| | Historic, deterministic stress tests with changes in market risk factors based either on specific past events (like the situation in the fourth quarter of 2008) or on our statistical analysis of changes in the
past
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Hypothetical, deterministic stress tests with changes in market risk factors based on our judgement of possible future rates in a given scenario.
|- | -------------------------------------------------------------------------------------------------------------------------------------------------

We can produce stress tests using either income or value measures. They cover one or more categories of exposures accounted for on an accruals basis or at fair value. We
use expert judgement both in defining appropriate hypothetical stress tests and any adjusting assumptions based on the balance sheet, management actions and customer behaviour.

How we use stress testing

We discuss stress testing results at senior level
management committees. They affect Corporate Centres decisions by highlighting possible risks in the banking book and the effectiveness of remedial actions we could take. We compare stress test results with stress limits and triggers set by
our internal committees, or against metrics set by the PRA. If the results are over our limits or triggers, we take remedial actions and follow an escalation process.

Risk mitigation(unaudited)

We hedge our foreign currency funding positions back to sterling, so our foreign exchange positions
tend to be residual exposures that remain after hedging. These positions could be, for example, to spot foreign exchange rates or to cross currency basis. We monitor foreign exchange risk against absolute net exposures and VaR-based
limits and triggers. For more, see Our funding strategy and structure and Term issuance in the Liquidity risk section.

We
mitigate income statement volatility mainly through hedge accounting. We monitor any hedge accounting ineffectiveness that might lead to income statement volatility, with a VaR measure and trigger, reported monthly. For our accounting policies for
derivatives and hedge accounting, see Note 1 to the Consolidated Financial Statements. We typically hedge the interest rate risk of the portfolio of securities we hold for liquidity and investment purposes with interest rate swaps, retaining spread
and inflation exposures. These retained exposures are the key drivers of the VaR and stress tests we use to assess the risk of the portfolio.

Risk monitoring and reporting(unaudited)

We monitor the banking market risks of the portfolios held for liquidity and investment purposes
using sensitivities, VaR and stress tests. We report them against limits and triggers to senior management daily and to ALCO and Executive Risk Control Committee monthly. The VaR we report captures all key sources of volatility (including interest
rate, inflation and credit spread risks) to fully reflect the potential volatility.





88Santander UK plc



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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks







BANKING
MARKET RISK REVIEW

Interest rate risk

Yield curve risk

The table below shows how our base case income and valuation
would be affected by a 50 basis point parallel shift (both upwards and downwards) applied instantaneously to the yield curve at 31 December 2016 and 2015. Sensitivity to parallel shifts represents the amount of risk in a way that we think is
both simple and scalable. 50 basis points is the stress we typically focus on for banking market risk controls, although we also monitor sensitivities to other parallel and non-parallel shifts as well as scenarios.



|                            |  |          |     |  |          |  |     |      |  |  |          |  |  |          |     |  |  |  |     |  
|--------------------------- |  | -------- | --- |  | -------- |  | --- | ---- |  |  | -------- |  |  | -------- | --- |  |  |  | --- | -
|                            |  | 2016     |     |  |          |  |     | 2015 | 
|                            |  | +50bps£m |     |  | -50bps£m |  |     |      |  |  | +50bps£m |  |  | -50bps£m |    
|NIM sensitivity             |  |          | 240 |  |          |  | (82 | )    |  |  |          |  |  |          | 131 |  |  |  | 39  |  
|EVE sensitivity (unaudited) |  |          | 54  |  |          |  | (30 | )    |  |  |          |  |  |          | 86  |  |  |  | (54 | )

2016 compared to 2015(unaudited)

The movement in NIM sensitivities in 2016 was largely due to market volatility and reduced levels of the
yield curve following the UK referendum on EU membership and the subsequent Base Rate cut. This, combined with retail liability products re-pricing (including changes to the terms of our 1I2I3 Current Account and some variable rate savings products)
and changes in underlying management assumptions, has increased NIM sensitivities to both up and down 50bps parallel shocks.

The reduction in EVE sensitivities in
2016 largely reflected our hedging activity to mitigate the risks of a continuing low interest rate environment, the increased volume of fixed rate assets left unhedged as well as the changes in the underlying management assumptions used for risk
measurement purposes mentioned above.

We have also taken actions to be prepared for the possibility of negative interest rates in the UK, including a review of our
systems and models, and to ensure any potential impact on our customers is appropriately managed.

Basis risk(unaudited)

We measure basis risk using various
risk measures, including VaR. The VaR measure uses the same VaR methodology as our trading book. The basis risk VaR reflects our basis risk exposure between the Base Rate, reserve rate linked assets deposited with central banks, the Sterling
Overnight Index Average (SONIA) rate and between London Interbank Offered Rates (LIBOR) of different terms.

2016 compared to 2015

The basis risk VaR at 31 December 2016 was £13m (2015: £1m). The increase in 2016 was largely due to underlying net basis position changes as a result of
the continued reduction in SVR mortgages and growth in bank account liability volumes.

Interest rate repricing gap(unaudited)

The table below shows the interest rate
repricing gap of our balance sheet by repricing buckets.



|                  |  |            |         |   |           |  |        |            |  |  |            |   |  |             |        |   |                 |  |        |          |  |  |         |   |  |  |         |  
|----------------- |  | ---------- | ------- | - | --------- |  | ------ | ---------- |  |  | ---------- | - |  | ----------- | ------ | - | --------------- |  | ------ | -------- |  |  | ------- | - |  |  | ------- | -
|                  |  | 3 months£m |         |   | 1 year £m |  |        | 3 years £m |  |  | 5 years £m |   |  | >5 years £m |        |   | Not sensitive£m |  |        | Total £m | 
|2016              |  |            |         |   |           |  |        |            |  |  |            |   |  |             |        |   |                 |  |        |          |  |  |         |   |  |  |         |  
|Assets            |  |            | 139,262 |   |           |  | 31,817 |            |  |  | 54,289     |   |  |             | 16,883 |   |                 |  | 16,358 |          |  |  | 17,337  |   |  |  | 275,946 |  
|Liabilities       |  |            | 166,131 |   |           |  | 20,418 |            |  |  | 23,231     |   |  |             | 18,451 |   |                 |  | 25,517 |          |  |  | 26,000  |   |  |  | 279,748 |  
|Off-balance sheet |  |            | (15,463 | ) |           |  | 7,596  |            |  |  | (611       | ) |  |             | 7,361  |   |                 |  | 4,919  |          |  |  |        |   |  |  | 3,802   |  
|Net gap           |  |            | (42,332 | ) |           |  | 18,995 |            |  |  | 30,447     |   |  |             | 5,793  |   |                 |  | (4,240 | )        |  |  | (8,663  | ) |  |  |        |  
|                  |  |            |         |   |           |  |       
|2015              |  |            |         |   |           |  |        |            |  |  |            |   |  |             |        |   |                 |  |        |          |  |  |         |   |  |  |         |  
|Assets            |  |            | 139,374 |   |           |  | 25,911 |            |  |  | 49,349     |   |  |             | 19,414 |   |                 |  | 10,097 |          |  |  | 16,397  |   |  |  | 260,542 |  
|Liabilities       |  |            | 149,444 |   |           |  | 23,186 |            |  |  | 21,304     |   |  |             | 14,063 |   |                 |  | 24,910 |          |  |  | 26,801  |   |  |  | 259,708 |  
|Off-balance sheet |  |            | (18,615 | ) |           |  | 1,274  |            |  |  | 10,799     |   |  |             | (1,213 | ) |                 |  | 6,921  |          |  |  |        |   |  |  | (834    | )
|Net gap           |  |            | (28,685 | ) |           |  | 3,999  |            |  |  | 38,844     |   |  |             | 4,138  |   |                 |  | (7,892 | )        |  |  | (10,404 | ) |  |  |        |  

Inflation and spread risks(unaudited)

The VaR of the portfolios of securities held for liquidity and investment purposes was £5m at
31 December 2016 (2015: £3m). The main risk factors remain the inflation and spread risk exposures of these positions. The increase in 2016 was mainly as a result of portfolio growth and rebalancing, plus the impact of more volatile
market data used in the VaR calculation.

We regularly stress test the portfolio against historical and hypothetical scenarios. Using the possible losses from the
stress tests, we establish limits that complement our VaR-based limits. At 31 December 2016, using historic deterministic stress tests, we estimated the worst three month stressed loss for these portfolios to be £280m (2015: £259m).
The increase in simulated stress loss from these portfolios was mainly due to portfolio growth from both new asset purchases, and a rise in the GBP value of foreign currency denominated assets, following the fall in the value of GBP after the UK
referendum on EU membership.





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Annual Report 2016

Risk review











Liquidity risk   Overview(unaudited)  Liquidity risk is the risk that we do not
have sufficient liquid financial resources available to meet our obligations as they fall due, or we can only secure such resources at excessive cost. 
It is split into three parts:
Funding or structural liquidity risk: the risk that we may not have sufficient liquid assets
to meet the payments required at a given time due to maturity transformation. Contingent
liquidity risk: the risk that future events may require a larger than expected amount of liquidity i.e. the risk of not having sufficient liquid assets to meet sudden and unexpected short-term obligations.
 Market liquidity risk:the risk that assets we hold to mitigate the risk of failing to meet our obligations as they fall due, which are normally liquid, become illiquid when they are needed.
In this section, we describe our sources and uses of liquidity and how we manage liquidity risk. We also analyse our key liquidity metrics, including our Liquidity
Coverage Ratio (LCR) and our eligible liquidity pool.  We then explain our funding strategy and
structure and we also analyse our wholesale funding. Finally we analyse how we have encumbered some of our assets to support our funding activities. 
Key metrics(unaudited)
  LCR improved to 139% (2015: 120%)  Our LCR eligible liquidity pool
increased by £12.0bn to £50.7bn at 31 December 2016, mainly reflecting prudent liquidity planning and an increase in the collateral received for derivatives used to hedge our foreign currency medium term issuance after the UK
referendum on EU membership.  Wholesale funding with
maturity of <1yr up to £21.4bn (2015: £21.1bn)  Wholesale funding with a
residual maturity of less than one year increased by £0.3bn to £21.4bn at 31 December 2016, reflecting changes in the maturity profile of our wholesale funding.
 LCR eligible liquidity pool coverage of wholesale funding
of <1yr increased to 237% (2015: 183%)  Our LCR eligible liquidity pool significantly
exceeded wholesale funding of less than one year, with a coverage ratio of 237% at 31 December 2016.






90Santander UK plc



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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





SOURCES AND USES OF LIQUIDITY(unaudited)

Our main
sources of liquidity

Most of our customer lending is financed by customer deposits. Although these funds are mostly callable, they give us a stable and
predictable core of funding. This is due to the nature of retail accounts and the breadth of our retail customer relationships.

We have a strong wholesale funding
investor base, diversified across product types and geographies. Through the wholesale markets we have active relationships in many sectors including banks, other financial institutions, corporates and investment funds. We access the wholesale
funding markets for subordinated debt, longer-dated senior unsecured debt, covered bonds and shorter-dated senior unsecured debt, through Abbey National Treasury Services plc for structured notes and short-term funding and through securitisations of
certain assets. For more on our programmes, see Notes 16, 29 and 30 in the Consolidated Financial Statements.

We generate funding on the strength of our balance
sheet, our profitability and our own network of investors. We do not rely on guarantees from Banco Santander SA or any other member of Banco Santander. We do not raise funds to finance other members of Banco Santander or guarantee their debts (other
than some of our own subsidiaries). As a PRA-regulated group, Santander UK plc has to meet PRA liquidity needs on a standalone basis. This means we have to prove to the PRA we can withstand liquidity and capital stress tests.

While we manage our funding and liquidity on a standalone basis, we coordinate our issuance plans with Banco Santander where appropriate and we comply with rules set by
the PRA, other regulators, and Banco Santander standards. While we manage, consolidate and monitor liquidity risk centrally, we also manage and monitor it in the business area it comes from.

Our main uses of liquidity

Our main uses of liquidity
are to fund our lending in Retail Banking and Commercial Banking, pay interest expense, pay dividends to shareholders, and repay debt. Our ability to pay dividends depends on various factors. These include our regulatory capital needs, distributable
reserves and financial performance. We also use liquidity as consideration for business combinations.

OUR KEY LIQUIDITY RISKS(unaudited)

Through our liquidity risk
appetite framework, we manage our funding or structural contingent and market liquidity risks wherever they arise. This can be in any of the following areas:



|                                                   |  |              |  |                                                                                                                                                                                                                                                                                                                                                                               
|-------------------------------------------------- |  | ------------ |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Key
risks                                          |  | Description 
|                                                   |  |             
|Retail and corporate deposit outflows              |  |             |  | Outflows if we are seen as more of a credit risk than our peers.                                                                                                                                                                                                                                                                                                              
|                                                   |  |             
|Wholesale secured and
unsecured liquidity outflows |  |  
         |  | Wholesale unsecured deposits failing to roll over at maturity date.
 An inability to replace wholesale secured funding on maturity.                                                                                                                                                                                                                                           
|                                                   |  |             
|Off-balance sheet activities                       |  |  
 
 
 
 |  | Collateral outflows if our credit rating was downgraded. Credit rating downgrades could also lead to higher
costs or less capacity to raise funding.  Outflows of collateral we owe but that have not yet been
called.  Outflows of collateral due to market movements.
 Drawdowns on committed facilities based on facility type, and counterparty type and
creditworthiness.
|                                                   |  |             
|Other risks                                        |  |             |  | Funding concentrations  outflows against concentrations of wholesale secured financing providers.                                                                                                                                                                                                                                                                            
|                                                   |  |             |  | Intra-day cash flows  shortfall on the liquidity we need to support intra-day needs.                                                                                                                                                                                                                                                                                         
|                                                   |  |             |  | Intra-group commitments and support  cash in our subsidiaries becoming unavailable to the wider Santander UK group and contingent calls for funding from subsidiaries and affiliates.                                                                                                                                                                                        
|                                                   |  |             |  | Franchise retention  outflows we need to support our future business and reputation.                                                                                                                                                                                                                                                                                         





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Annual Report 2016

Risk review









LIQUIDITY RISK MANAGEMENT

Introduction(unaudited)

We manage liquidity
risk on a consolidated basis. We created our governance, oversight and control frameworks, and our liquidity risk appetite (LRA), on the same basis. Under this model, and the PRAs regulatory liquidity rules, Santander UK plc and its
subsidiaries Abbey National Treasury Services plc and Cater Allen Limited form the Domestic Liquidity Sub-group (DoLSub). It is assumed that each member of the DoLSub will support the others by transferring surplus liquidity in times of stress. We
manage liquidity flows between the DoLSub and other areas of our business efficiently. The same arrangement existed before October 2015 under the Defined Liquidity Group rules of the PRA in place until that date.

Risk appetite

Our liquidity risk appetite statement is
based on the principles of liquidity management we use to manage our balance sheet. It also supports our need to meet or exceed the rules of our regulators.

Our
liquidity management principles are that we:

| | Meet or exceed all PRA liquidity requirements
|- | ---------------------------------------------

| | Ensure that all maturing liabilities can be refinanced as they fall due
|- | -----------------------------------------------------------------------

| | Maintain a level of customer loans versus customer deposits and prevent an over-reliance on wholesale markets
|- | -------------------------------------------------------------------------------------------------------------

| | Maintain enough capacity to realise liquid assets within an appropriate period to support our liquidity risk appetite
|- | ---------------------------------------------------------------------------------------------------------------------

| | Avoid an over-reliance on funding from a single product, customer or counterparty
|- | ---------------------------------------------------------------------------------

| | Maintain long-term funding to match long-term assets
|- | ----------------------------------------------------

| | Maintain a sufficient level of unencumbered assets to support current and future funding and collateral requirements.
|- | ---------------------------------------------------------------------------------------------------------------------

Our liquidity risk appetite is approved by the Board, under advice from the Board Risk Committee. Our liquidity risk appetite, in the context of our overall Risk
Appetite, is reviewed and approved by the Board each year, or more often if needed.





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Risk measurement(unaudited)

We use a number of
metrics to manage liquidity risk. These include metrics that show the difference between cash and collateral inflows and outflows in different time periods. They also include structural metrics, such as our loan-to-deposit ratio and our level of
encumbered assets.

Stress testing (unaudited)

We also have a liquidity stress test framework in place that includes the most plausible and significant stress scenario. It is approved as part of our liquidity risk
appetite. To fit with our risk appetite, the liquidity outflows that come from this stress test must be fully covered with high-quality liquid assets.

We must cover
the outcome of other plausible (but less likely) stress tests with a combination of:

  High-quality liquid assets

  Other liquid assets

  Management actions sanctioned at the
right level of governance.

Our Risk division runs our stress tests. They are:



|                                   |  |                                                                                                                                                                                                                                                                                                                                             
|---------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                   | 
|Test                               |  | Description                                                                                                                                                                                                                                                                                                                                 
|                                   | 
|Our liquidity risk appetite stress |  | A comprehensive stress test that looks at all our risks
during an idiosyncratic shock in a time of market-wide disruption that causes a loss of confidence in our brand. We reviewed and revised our liquidity risk appetite stress in 2016 and have retained the stress scenario whilst updating the calculated
outflows resulting from it.
|                                   | 
|Global economic stress             |  | A stress test that looks at a slowdown in emerging markets
that results in a downturn in the UK housing market.                                                                                                                                                                                                                             
|                                   | 
|US stress                          |  | Stress tests that look at the impact of losing the confidence
of US investors, affecting our access to US funding markets.                                                                                                                                                                                                                  
|                                   | 
|Acute retail stress                |  | Stress tests that look at the impact of losing the confidence
of retail depositors, causing major, acute loss of deposits.                                                                                                                                                                                                                  
|                                   | 
|Slow retail stress                 |  | Stress tests that look at the impact of a prolonged period of
loss of deposits.                                                                                                                                                                                                                                                             
|                                   | 
|Wholesale stress                   |  | A stress test that incorporates an adverse assessment of the
impact of the UK referendum on EU membership, where losing corporate and wholesale customer confidence causes us a prolonged period of loss of deposits.                                                                                                                       
|                                   | 
|Protracted stress                  |  | A 12-month stress with a three-month period of severe
liquidity constraint and the loss of retail customer confidence and subsequent loss of deposits.                                                                                                                                                                                      
|                                   | 
|Eurozone stress                    |  | A stress test that looks at a scenario in which a major deterioration in the eurozone
economies has a knock-on (or contagion) effect on us, causing severe liability outflows and rating agency action.                                                                                                                                     

We also conduct sensitivity analysis and reverse stress testing for instant liquidity shocks by each key liquidity risk. We do this to
understand the impacts they would have on our liquidity risk appetite and our regulatory liquidity metrics.

We also monitor our PRA Individual Liquidity Guidance
and our Liquidity Coverage Ratio (LCR) to ensure we continue to meet the PRA requirements, and we monitor our Net Stable Funding Ratio (NSFR) even though the rules for this are not yet finalised.





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Annual Report 2016

Risk review









Risk mitigation(unaudited)

The Board aims to make our balance sheet resilient at all times and for it to be perceived as such
by stakeholders. This preserves our short and long-term viability. The Board recognises that as we are involved in maturity transformation, we cannot hold enough liquidity to cover all possible stress scenarios. The Board requires us to hold enough
liquidity to make sure we will survive the most plausible and significant stress scenario. We do this by keeping a prudent balance sheet structure and maintaining our approved liquid resources. We review this scenario regularly to keep it relevant
to the current economic and market environment.

Ongoing business management

Within our framework of prudent funding and liquidity management, we manage our activities to minimise our liquidity risk.

We have clear responsibilities for short-term funding, medium-term funding, encumbrance, collateral and liquid asset management. This ensures we manage liquidity risks
as part of our ongoing business management and within our daily operations, strategy and planning. We distinguish between short-term and strategic activities as follows:



|                                         |  |                                                                                                                                                                                                                                                                                                                                                                                                       
|---------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Short-term tactical liquidity management
|                                         | 
|Liquid resources                         |  | We maintain liquid assets, contingent liquidity and defined
management actions to source funds. We do this to cover unexpected demands on cash in both a plausible and significant stress scenario and other more distant and severe but less probable scenarios. Our main stress events are large and unexpected
deposit withdrawals by retail customers and the loss of unsecured wholesale funding.
|                                         | 
|Funding profile                          |  | We use metrics to help control outflows in different
maturities and concentrations.                                                                                                                                                                                                                                                                                                                   
|                                         | 
|Intra-day collateral management          |  | We make sure we have enough collateral to support our involvement in payment and settlement
systems.                                                                                                                                                                                                                                                                                                  
|                                         |  |                                                                                                                                                                                                                                                                                                                                                                                                       
|Strategic funding management            
|                                         | 
|Structural balance sheet shape           |  | We manage our maturity transformation, where we invest
shorter-term funding in longer-term assets. We also manage our use of wholesale funding for non-marketable assets, and our use of non-marketable assets to generate liquidity.                                                                                                                                                                 
|                                         | 
|Wholesale funding strategy               |  | We avoid relying too much on any individual or groups of
customer, currency, market or product that might become highly correlated in a time of stress. We also avoid excessive concentrations in the maturity of our wholesale funding.                                                                                                                                                              
|                                         | 
|Wholesale funding capacity               |  | We maintain and promote our client relationships, monitor our line availability and maintain
our funding capacity by using lines and markets.                                                                                                                                                                                                                                                         

We regularly test the liquidity of our eligible liquidity pool, in line with PRA and Basel rules. We do this by realising some of the
assets through repurchase or outright sale to the market. We make sure that over any 12-month period we realise a significant part of our eligible liquidity pool.

As well as our eligible liquidity pool, we hold a portfolio of unencumbered liquid assets at all times. Our LRA and regulatory requirements determine the size and
composition of this portfolio. These assets give us a source of contingent liquidity, as we can realise some of them in a time of stress to create liquidity through repurchase or outright sale to the market.

Recovery and resolution framework

In the event of a liquidity or capital
stress, Santander UK has developed a series of actions that would be taken that form part of the Recovery and Resolution framework. This enables us to respond to a wide variety of stresses, from mild to severe, in a coordinated and efficient manner.
It addresses how a capital or liquidity stress would be managed as part of our wider incident management processes. It defines three stages of severity which are invoked in response to triggers across a range of metrics falling outside threshold
levels, or a qualitative assessment of potential serious risks to our financial position and balance sheet strength. All of these metrics are part of our existing risk management processes.

As part of our Recovery and Resolution framework, we also consider our ability to change the amounts and timing of cash flows to respond to unexpected events. To
determine our financial adaptability, we consider our ability to:

 Find new sources of finance

 Get financial support from other Banco Santander companies

 Continue in
business by reducing our operations or using different resources.

Risk monitoring and reporting(unaudited)

We monitor liquidity risk on a
daily, weekly and monthly basis. We do this through different committees and levels of management, including ALCO and the Board Risk Committee.





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





LIQUIDITY RISK REVIEW(unaudited)

Liquidity Coverage Ratio

This table shows our LCR and
LRA reflecting the stress testing methodology in place at that time.



|                                                                      |  |           |       |   |           |  |       |     |  |  |                                              |  |  |           |       |   |  |  |       |  
|--------------------------------------------------------------------- |  | --------- | ----- | - | --------- |  | ----- | --- |  |  | -------------------------------------------- |  |  | --------- | ----- | - |  |  | ----- | -
|                                                                      |  | LCR       |       |   |           |  |       | LRA | 
|                                                                      |  |           |       |   |           |  |       |     |  |  | (two-month Santander UKspecific requirement) | 
|                                                                      |  | 2016
 £bn |       |   | 2015
 £bn |  |       |     |  |  | 2016
 £bn                                    |  |  | 2015
 £bn |      
|Eligible liquidity pool                                               |  |           | 50.1  |   |           |  | 37.8  |     |  |  |                                              |  |  |           | 45.2  |   |  |  | 34.4  |  
|                                                                      |  |           |       |   |          
|Asset inflows                                                         |  |           | 1.9   |   |           |  | 1.5   |     |  |  |                                              |  |  |           | 1.3   |   |  |  | 0.8   |  
|                                                                      |  |           |       |   |          
|Stress outflows:                                                      |  |           |       |   |           |  |       |     |  |  |                                              |  |  |           |       |   |  |  |       |  
|Retail and commercial deposit outflows                                |  |           | (8.2  | ) |           |  | (7.6  | )   |  |  |                                              |  |  |           | (9.8  | ) |  |  | (9.2  | )
|Wholesale funding and derivatives                                     |  |           | (21.0 | ) |           |  | (16.3 | )   |  |  |                                              |  |  |           | (8.1  | ) |  |  | (9.0  | )
|Contractual credit rating downgrade exposure                          |  |           | (5.6  | ) |           |  | (5.9  | )   |  |  |                                              |  |  |           | (5.0  | ) |  |  | (4.4  | )
|Drawdowns of loan commitments                                         |  |           | (3.1  | ) |           |  | (3.1  | )   |  |  |                                              |  |  |           | (2.5  | ) |  |  | (2.7  | )
|Other                                                                 |  |           |      |   |           |  |      |     |  |  |                                              |  |  |           | (3.2  | ) |  |  | (1.2  | )
|Total stress net cash outflows                                        |  |           | (36.0 | ) |           |  | (31.4 | )   |  |  |                                              |  |  |           | (27.3 | ) |  |  | (25.7 | )
|Surplus                                                               |  |           | 14.1  |   |           |  | 6.4   |     |  |  |                                              |  |  |           | 17.9  |   |  |  | 8.7   |  
|Eligible liquidity pool as a percentage of anticipated net cash
flows |  |           | 139%  |   |           |  | 120%  |     |  |  |                                              |  |  |           | 166%  |   |  |  | 134%  |  

LCR eligible liquidity pool

This table shows the carrying value and liquidity value of the assets in our eligible liquidity pool at 31 December 2016 and 2015. It also shows the weighted average
carrying value in the year:



|                                                       |  |                |      |  |          |  |                    |  |  |         |  |  |                                            |  |  |  |      |  |          |  |  |          |  |  |      |  |  |  |      | 
|------------------------------------------------------ |  | -------------- | ---- |  | -------- |  | ------------------ |  |  | ------- |  |  | ------------------------------------------ |  |  |  | ---- |  | -------- |  |  | -------- |  |  | ---- |  |  |  | ---- | 
|                                                       |  | Carrying value |      |  |          |  | Liquidity value(1) |  |  |         |  |  | Weighted average carryingvalue in the year | 
|                                                       |  | 2016£bn        |      |  | 2015
£bn |  |                    |  |  | 2016£bn |  |  | 2015
£bn                                   |  |  |  |      |  | 2016
£bn |  |  | 2015
£bn | 
|Cash and balances at central banks                     |  |                | 16.0 |  |          |  | 15.9               |  |  |         |  |  | 16.0                                       |  |  |  | 15.9 |  |          |  |  |          |  |  | 19.0 |  |  |  | 19.1 | 
|Government bonds                                       |  |                | 29.5 |  |          |  | 18.1               |  |  |         |  |  | 29.5                                       |  |  |  | 17.8 |  |          |  |  |          |  |  | 18.4 |  |  |  | 12.5 | 
|Supranational bonds and multilateral development banks |  |                | 1.5  |  |          |  | 1.2                |  |  |         |  |  | 1.5                                        |  |  |  | 1.2  |  |          |  |  |          |  |  | 1.4  |  |  |  | 1.1  | 
|Covered bonds                                          |  |                | 2.9  |  |          |  | 2.1                |  |  |         |  |  | 2.6                                        |  |  |  | 1.8  |  |          |  |  |          |  |  | 2.6  |  |  |  | 2.3  | 
|Asset-backed securities                                |  |                | 0.7  |  |          |  | 0.7                |  |  |         |  |  | 0.5                                        |  |  |  | 0.7  |  |          |  |  |          |  |  | 0.8  |  |  |  | 0.6  | 
|Corporate bonds                                        |  |                |     |  |          |  | 0.1                |  |  |         |  |  |                                           |  |  |  | 0.1  |  |          |  |  |          |  |  |     |  |  |  | 0.1  | 
|Equities                                               |  |                | 0.1  |  |          |  | 0.6                |  |  |         |  |  |                                           |  |  |  | 0.3  |  |          |  |  |          |  |  | 0.5  |  |  |  | 0.5  | 
|                                                       |  |                | 50.7 |  |          |  | 38.7               |  |  |         |  |  | 50.1                                       |  |  |  | 37.8 |  |          |  |  |          |  |  | 42.7 |  |  |  | 36.2 | 



|(1) | Liquidity value is the carrying value with the applicable LCR haircut applied.
|--- | ------------------------------------------------------------------------------





Santander UK plc95



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##### Table of Contents



Annual Report 2016

Risk review









Balance sheet classification

This table shows the carrying value of the assets
in our eligible liquidity pool in our Consolidated Balance Sheet, or their treatment as off-balance sheet, at 31 December 2016 and 2015.



|                                                       |  |                       |      |  |                                  |  |      |               |  |  |                                |  |  |                               |     |  |                             |  |     |  |  |  |                              |  |  |  |  |  |  |  |      |  
|------------------------------------------------------ |  | --------------------- | ---- |  | -------------------------------- |  | ---- | ------------- |  |  | ------------------------------ |  |  | ----------------------------- | --- |  | --------------------------- |  | --- |  |  |  | ---------------------------- |  |  |  |  |  |  |  | ---- | -
|                                                       |  |                       |      |  | On-balance sheet                 |  |      |               |  |  | Off-balance sheet              | 
|                                                       |  | Eligibleliquiditypool |      |  | Cash andbalances atcentral banks |  |      | Tradingassets |  |  | Loans andreceivablessecurities |  |  | Available-for-sale securities |     |  | Held-to-maturityinvestments |  |     |  |  |  | Collateralreceived/(pledged) | 
|                                                       |  | £bn                   |      |  | £bn                              |  |      | £bn           |  |  | £bn                            |  |  | £bn                           |     |  | £bn                         |  |     |  |  |  | £bn                          | 
|2016                                                   |  |                       |      |  |                                  |  |      |               |  |  |                                |  |  |                               |     |  |                             |  |     |  |  |  |                              |  |  |  |  |  |  |  |      |  
|Cash and balances at central banks                     |  |                       | 16.0 |  |                                  |  | 16.0 |               |  |  |                               |  |  |                               |    |  |                             |  |    |  |  |  |                             |  |  |  |  |  |  |  |     |  
|Government bonds                                       |  |                       | 29.5 |  |                                  |  |     |               |  |  | 5.3                            |  |  |                               |    |  |                             |  | 5.0 |  |  |  | 6.4                          |  |  |  |  |  |  |  | 12.8 |  
|Supranational bonds and multilateral development banks |  |                       | 1.5  |  |                                  |  |     |               |  |  |                               |  |  |                               |    |  |                             |  | 1.4 |  |  |  |                             |  |  |  |  |  |  |  | 0.1  |  
|Covered bonds                                          |  |                       | 2.9  |  |                                  |  |     |               |  |  |                               |  |  |                               |    |  |                             |  | 2.9 |  |  |  |                             |  |  |  |  |  |  |  |     |  
|Asset-backed securities                                |  |                       | 0.7  |  |                                  |  |     |               |  |  |                               |  |  |                               | 0.1 |  |                             |  | 0.6 |  |  |  |                             |  |  |  |  |  |  |  |     |  
|Equities                                               |  |                       | 0.1  |  |                                  |  |     |               |  |  | 4.5                            |  |  |                               |    |  |                             |  |    |  |  |  |                             |  |  |  |  |  |  |  | (4.4 | )
|                                                       |  |                       | 50.7 |  |                                  |  | 16.0 |               |  |  | 9.8                            |  |  |                               | 0.1 |  |                             |  | 9.9 |  |  |  | 6.4                          |  |  |  |  |  |  |  | 8.5  |  
|                                                       |  |                       |      |  |                                  |  |      |              
|2015                                                   |  |                       |      |  |                                  |  |      |               |  |  |                                |  |  |                               |     |  |                             |  |     |  |  |  |                              |  |  |  |  |  |  |  |      |  
|Cash and balances at central banks                     |  |                       | 15.9 |  |                                  |  | 15.9 |               |  |  |                               |  |  |                               |    |  |                             |  |    |  |  |  |                             |  |  |  |  |  |  |  |     |  
|Government bonds                                       |  |                       | 18.1 |  |                                  |  |     |               |  |  | 3.9                            |  |  |                               |    |  |                             |  | 4.3 |  |  |  |                             |  |  |  |  |  |  |  | 9.9  |  
|Supranational bonds and multilateral development banks |  |                       | 1.2  |  |                                  |  |     |               |  |  |                               |  |  |                               |    |  |                             |  | 1.2 |  |  |  |                             |  |  |  |  |  |  |  |     |  
|Covered bonds                                          |  |                       | 2.1  |  |                                  |  |     |               |  |  |                               |  |  |                               |    |  |                             |  | 2.4 |  |  |  |                             |  |  |  |  |  |  |  | (0.3 | )
|Asset-backed securities                                |  |                       | 0.7  |  |                                  |  |     |               |  |  |                               |  |  |                               | 0.1 |  |                             |  | 0.6 |  |  |  |                             |  |  |  |  |  |  |  |     |  
|Corporate bonds                                        |  |                       | 0.1  |  |                                  |  |     |               |  |  |                               |  |  |                               |    |  |                             |  | 0.1 |  |  |  |                             |  |  |  |  |  |  |  |     |  
|Equities                                               |  |                       | 0.6  |  |                                  |  |     |               |  |  | 5.7                            |  |  |                               |    |  |                             |  |    |  |  |  |                             |  |  |  |  |  |  |  | (5.1 | )
|                                                       |  |                       | 38.7 |  |                                  |  | 15.9 |               |  |  | 9.6                            |  |  |                               | 0.1 |  |                             |  | 8.6 |  |  |  |                             |  |  |  |  |  |  |  | 4.5  |  

Geographical distribution

This table shows
the geographical distribution of the carrying value of the assets in our eligible liquidity pool at 31 December 2016 and 2015:



|                                                          |  |       |      |  |       |  |     |        |  |  |          |     |  |          |     |     |  |  |      | 
|--------------------------------------------------------- |  | ----- | ---- |  | ----- |  | --- | ------ |  |  | -------- | --- |  | -------- | --- | --- |  |  | ---- | 
|                                                          |  | UK£bn |      |  | US£bn |  |     | EEA£bn |  |  | Other£bn |     |  | Total£bn |    
|2016                                                      |  |       |      |  |       |  |     |        |  |  |          |     |  |          |     |     |  |  |      | 
|Cash and balances at central banks                        |  |       | 12.5 |  |       |  | 3.5 |        |  |  |         |     |  |          |    |     |  |  | 16.0 | 
|Government bonds(1)                                       |  |       | 23.1 |  |       |  | 2.9 |        |  |  | 2.8      | (2) |  |          | 0.7 | (3) |  |  | 29.5 | 
|Supranational bonds and multilateral development banks(4) |  |       | 0.1  |  |       |  | 0.8 |        |  |  |         |     |  |          | 0.6 |     |  |  | 1.5  | 
|Covered bonds(5)                                          |  |       | 0.6  |  |       |  | 0.1 |        |  |  | 1.2      |     |  |          | 1.0 |     |  |  | 2.9  | 
|Asset-backed securities(6)                                |  |       | 0.5  |  |       |  |    |        |  |  | 0.1      |     |  |          | 0.1 |     |  |  | 0.7  | 
|Equities                                                  |  |       |     |  |       |  |    |        |  |  | 0.1      |     |  |          |    |     |  |  | 0.1  | 
|                                                          |  |       | 36.8 |  |       |  | 7.3 |        |  |  | 4.2      |     |  |          | 2.4 |     |  |  | 50.7 | 
|                                                          |  |       |      |  |      
|2015                                                      |  |       |      |  |       |  |     |        |  |  |          |     |  |          |     |     |  |  |      | 
|Cash and balances at central banks                        |  |       | 13.7 |  |       |  | 2.2 |        |  |  |         |     |  |          |    |     |  |  | 15.9 | 
|Government bonds(1)                                       |  |       | 10.6 |  |       |  | 4.9 |        |  |  | 1.5      | (2) |  |          | 1.1 | (3) |  |  | 18.1 | 
|Supranational bonds and multilateral development banks(4) |  |       | 0.1  |  |       |  | 0.6 |        |  |  |         |     |  |          | 0.5 |     |  |  | 1.2  | 
|Covered bonds(5)                                          |  |       | 0.3  |  |       |  | 0.1 |        |  |  | 1.1      |     |  |          | 0.6 |     |  |  | 2.1  | 
|Asset-backed securities(6)                                |  |       | 0.5  |  |       |  |    |        |  |  | 0.1      |     |  |          | 0.1 |     |  |  | 0.7  | 
|Corporate bonds(7)                                        |  |       |     |  |       |  |    |        |  |  | 0.1      |     |  |          |    |     |  |  | 0.1  | 
|Equities                                                  |  |       | 0.1  |  |       |  |    |        |  |  | 0.4      |     |  |          | 0.1 |     |  |  | 0.6  | 
|                                                          |  |       | 25.3 |  |       |  | 7.8 |        |  |  | 3.2      |     |  |          | 2.4 |     |  |  | 38.7 | 



|(1) | Consists of AAA rated bonds of £8.6bn (2015: £11.6bn), AA+ rated bonds of £0.3bn (2015: £5.1bn), AA rated bonds of £20.0bn (2015: £0.3bn), AA- rated bonds of £0.2bn (2015:
£nil) and A rated bonds of £0.4bn (2015: £1.1bn).
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Consists of Germany of £1.8bn (2015: £0.9bn), Netherlands of £0.4bn (2015: £0.2bn), Belgium of £0.2bn (2015: £nil), France of £0.1bn (2015: £0.2bn) and other countries of
£0.3bn (2015: £0.2bn).
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Consists of Japan of £0.4bn (2015: £1.1bn), Switzerland of £0.2bn (2015: £nil) and Canada of £0.1bn (2015: £nil).
|--- | -----------------------------------------------------------------------------------------------------------------

|(4) | Consists of AAA rated bonds of £1.5bn (2015: £1.2bn).
|--- | -----------------------------------------------------

|(5) | Consists of AAA rated bonds of £2.9bn (2015: £2.0bn) and AA+ rated bonds of £nil (2015: £0.1bn).
|--- | ------------------------------------------------------------------------------------------------

|(6) | Consists of AAA rated bonds of £0.7bn (2015: £0.7bn).
|--- | -----------------------------------------------------

|(7) | Consists of AA rated bonds of £nil (2015: £0.1bn).
|--- | --------------------------------------------------





96Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Currency analysis

This table shows the carrying value of our eligible liquidity pool by major currencies at 31 December 2016 and 2015:



|                                                                                                                                                                                                      |  |                             |      |  |             |  |     |             |  |  |            |  |  |                 |      |  |  |  |      | 
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------- | ---- |  | ----------- |  | --- | ----------- |  |  | ---------- |  |  | --------------- | ---- |  |  |  | ---- | 
|                                                                                                                                                                                                      |  | US Dollar£bn                |      |  | Euro£bn     |  |     | Sterling£bn |  |  | Other£bn   |  |  | Total
£bn       |     
|2016                                                                                                                                                                                                  |  |                             | 10.1 |  |             |  | 2.4 |             |  |  | 37.6       |  |  |                 | 0.6  |  |  |  | 50.7 | 
|2015                                                                                                                                                                                                  |  |                             | 9.8  |  |             |  | 1.5 |             |  |  | 26.3       |  |  |                 | 1.1  |  |  |  | 38.7 | 
|                                                                                                                                                                                                     
|Composition of the eligible liquidity pool 
This table shows the allocation of the carrying value of the assets in our eligible liquidity pool for LRA and LCR purposes at 31 December 2016 and 2015. | 
|                                                                                                                                                                                                      |  | LCR eligible liquidity pool |      |  | Of which    | 
|                                                                                                                                                                                                      |  | Level 1£bn                  |      |  | Level 2A£bn |  |     | Level 2B£bn |  |  | Total  £bn |  |  | LRA eligible£bn |     
|2016                                                                                                                                                                                                  |  |                             |      |  |             |  |     |             |  |  |            |  |  |                 |      |  |  |  |      | 
|Cash and balances at central banks                                                                                                                                                                    |  |                             | 16.0 |  |             |  |    |             |  |  |           |  |  |                 | 16.0 |  |  |  | 15.0 | 
|Government bonds                                                                                                                                                                                      |  |                             | 28.9 |  |             |  | 0.6 |             |  |  |           |  |  |                 | 29.5 |  |  |  | 29.5 | 
|Supranational bonds and multilateral development banks                                                                                                                                                |  |                             | 1.5  |  |             |  |    |             |  |  |           |  |  |                 | 1.5  |  |  |  | 1.5  | 
|Covered bonds                                                                                                                                                                                         |  |                             | 1.7  |  |             |  | 1.2 |             |  |  |           |  |  |                 | 2.9  |  |  |  | 2.9  | 
|Asset-backed securities                                                                                                                                                                               |  |                             |     |  |             |  |    |             |  |  | 0.7        |  |  |                 | 0.7  |  |  |  | 0.3  | 
|Equities                                                                                                                                                                                              |  |                             |     |  |             |  |    |             |  |  | 0.1        |  |  |                 | 0.1  |  |  |  | 0.1  | 
|                                                                                                                                                                                                      |  |                             | 48.1 |  |             |  | 1.8 |             |  |  | 0.8        |  |  |                 | 50.7 |  |  |  | 49.3 | 
|                                                                                                                                                                                                      |  |                             |      |  |            
|2015                                                                                                                                                                                                  |  |                             |      |  |             |  |     |             |  |  |            |  |  |                 |      |  |  |  |      | 
|Cash and balances at central banks                                                                                                                                                                    |  |                             | 15.9 |  |             |  |    |             |  |  |           |  |  |                 | 15.9 |  |  |  | 14.8 | 
|Government bonds                                                                                                                                                                                      |  |                             | 17.0 |  |             |  | 1.1 |             |  |  |           |  |  |                 | 18.1 |  |  |  | 18.1 | 
|Supranational bonds and multilateral development banks                                                                                                                                                |  |                             | 1.2  |  |             |  |    |             |  |  |           |  |  |                 | 1.2  |  |  |  | 1.2  | 
|Covered bonds                                                                                                                                                                                         |  |                             | 1.5  |  |             |  | 0.6 |             |  |  |           |  |  |                 | 2.1  |  |  |  | 1.8  | 
|Asset-backed securities                                                                                                                                                                               |  |                             |     |  |             |  |    |             |  |  | 0.7        |  |  |                 | 0.7  |  |  |  | 0.4  | 
|Corporate bonds                                                                                                                                                                                       |  |                             |     |  |             |  | 0.1 |             |  |  |           |  |  |                 | 0.1  |  |  |  |     | 
|Equities                                                                                                                                                                                              |  |                             |     |  |             |  |    |             |  |  | 0.6        |  |  |                 | 0.6  |  |  |  | 0.6  | 
|                                                                                                                                                                                                      |  |                             | 35.6 |  |             |  | 1.8 |             |  |  | 1.3        |  |  |                 | 38.7 |  |  |  | 36.9 | 

2016 compared to 2015

Throughout 2016,
we maintained robust risk management controls to monitor and manage the levels of our eligible liquidity pool and encumbrance. Our LCR eligible liquidity pool significantly exceeded wholesale funding of less than one year, with a coverage ratio of
237% at 31 December 2016 (2015: 183%), and our LCR improved to 139% at 31 December 2016 (2015: 120%). The change in the coverage ratio (which is expected to be volatile due to the management of normal short-term business commitments) and
the LCR was mainly due to an increase in the eligible liquidity pool assets of £12.0bn to £50.7bn at 31 December 2016 (2015: £38.7bn). This mainly reflected prudent liquidity planning and an increase in the collateral received
for derivatives used to hedge our foreign currency medium term issuance after the UK referendum on EU membership. In addition, some of the increase was driven by anticipation of the greater requirements expected when the EU adopts Regulatory
Technical Standards for assessing additional collateral outflows on derivatives contracts.





Santander UK plc97



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##### Table of Contents



Annual Report 2016

Risk review









OUR FUNDING STRATEGY AND STRUCTURE

Funding strategy(unaudited)

Our funding strategy continues to be based on maintaining a conservatively structured balance sheet
and diverse sources of funding.

Most of our funding comes from customer deposits. The rest is sourced from a mix of secured and unsecured funding in the wholesale
markets. Overall this means that we do not rely too heavily on wholesale funds. This is reflected in our customer loan-to-deposit ratio which is monitored against limits on a monthly basis. At the same time, it makes sure our sources of funding are
not too concentrated on any one product. We have checks and controls to limit our asset encumbrance from secured funding operations. As part of maintaining a diverse funding base, we raise funding in a number of currencies, including euro, and
convert it into sterling through currency swaps to fund our commercial assets which are largely sterling denominated.

Our base of stable retail and corporate
deposits is a key funding source for us. We leverage our large and diverse customer base to offer products that give us a long-term sustainable source of funding. We do this by focusing on building long-term relationships. More than 90% of our total
core retail customer liabilities are covered by the Financial Services Compensation Scheme (the FSCS).

Behavioural maturities

The contractual maturity of balance sheet assets and liabilities highlights the maturity transformation that underpins the role of banks to lend long-term, but to fund
themselves mostly with shorter-term liabilities, like customer deposits.

We achieve this by diversifying our funding operations across a wide customer base, both in
numbers and by type of depositor. In practice, the behavioural profiles of many liabilities show more stability and longer maturity than the contractual maturity. This is especially true of many types of retail and corporate deposits that, while
they may be repayable on demand or at short notice, have shown good stability even in times of stress.

We model behaviour profiles using our experience of
historical customer behaviour. We use these behavioural maturities to determine the funds transfer pricing interest rates at which we reward and charge our business units for sources and uses of funds. We will apply this rate until a customer
changes onto a different product or service offered by us or by one of our competitors.

We continue to improve the quality of our retail, commercial and wholesale
deposits. Across all customer segments, we aim to deepen our customer relationships. We do this to lengthen the contractual and behavioural profile of our liability base. In Retail Banking, we support this aim with attractive products such as the
1l2l3 World offering.

Deposit funding

Our Retail
Banking and Commercial Banking activities are mostly funded by customer deposits. The rest is funded through wholesale markets.





98Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Wholesale funding

Wholesale funding and issuance model(unaudited)

Banco Santander is a multiple point of entry resolution group. This means that should it fail, it would be split up into parts. Healthy parts might be
sold or be maintained as a residual group without their distressed sister companies. The resolution or recapitalisation of the distressed parts might be effected via bail in of bonds that had been issued to the market by a regional
intermediate holding company.

Santander UK is a single point of entry resolution group. This means that resolution would work downwards from the groups
holding company (i.e. Santander UK Group Holdings plc). Losses in subsidiaries would first be transferred up to Santander UK Group Holdings plc. If the holding company is bankrupt as a result, the group needs resolving. The bail in tool
is applied to the holding company, with the equity being written off and bonds converted into equity as necessary to recapitalise the group. Those bondholders would become the new owners, and the group would stay together.

Santander UK Group Holdings plc is the immediate holding company of Santander UK plc, which in turn is the immediate parent company of Abbey National Treasury Services
plc. This structure is a Bank of England recommended configuration which aims to resolve banks without disrupting the activities of their operating companies, thereby maintaining continuity of services for customers.

Our current structure is:



LOGO

Composition of wholesale funding(unaudited)

We are active in the wholesale markets and we have direct access to both money market and long-term
investors through our funding programmes. This makes our wholesale funding well diversified by product, maturity, geography and currency. This includes currencies available across a range of channels from money markets, repo markets, senior
unsecured, secured, medium-term and subordinated debt.

2016 compared to 2015

As part of our ring-fence planning, from 1 June 2016, Santander UK plc became the issuer in respect of the outstanding notes issued by Abbey National Treasury
Services plc under its US$30bn Euro Medium Term Note Programme, its Euro 35bn Global Covered Bond Programme, and its US SEC registered debt shelf. Santander UK plc also became the issuer for the following standalone securities: the Euro 60m
Guaranteed Step-Down Fixed / Inverse Floating Rate Notes due 2019, and the £166,995,000 Zero Coupon Amortising Guaranteed Notes due 2038.

Except for the
covered bonds, which will continue to have the secured guarantee of Abbey Covered Bonds LLP, all notes transferred to Santander UK plc by Abbey National Treasury Services plc and all notes issued by Santander UK plc in the future under these
programmes will be the sole liability of Santander UK plc and will not be guaranteed by any other entity.

Going forward, Santander UK plc is intended to be our main
operating company issuer of senior unsecured debt and covered bonds. Santander UK Group Holdings plc will be the issuer of subordinated debt and Minimum Requirement for Own Funds and Eligible Liabilities (MREL) / Total Loss Absorbing Capacity (TLAC)
eligible senior unsecured debt.





Santander UK plc99



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##### Table of Contents



Annual Report 2016

Risk review









Maturity profile of wholesale funding

This table shows our main sources of
wholesale funding. It does not include securities financing repurchase and reverse repurchase agreements. The table is based on exchange rates at issue and scheduled repayments. It does not reflect the final contractual maturity of the funding.



|                                                                         |  |           |     |  |            |  |     |             |  |  |            |  |  |             |     |  |           |  |     |           |  |  |           |  |  |          |      |  |       |  |      |  |  |  |      |  |  |  |      | 
|------------------------------------------------------------------------ |  | --------- | --- |  | ---------- |  | --- | ----------- |  |  | ---------- |  |  | ----------- | --- |  | --------- |  | --- | --------- |  |  | --------- |  |  | -------- | ---- |  | ----- |  | ---- |  |  |  | ---- |  |  |  | ---- | 
|                                                                         |  | <=1 month |     |  | >1 and     |  |     | >3 and      |  |  | >6 and     |  |  | >9 and      |     |  | Sub-total |  |     | >1 and    |  |  | >2 and    |  |  | >5 years |      |  | Total | 
|                                                                         |  |           |     |  | <=3 months |  |     | <= 6 months |  |  | <=9 months |  |  | <=12 months |     |  | <=1 year  |  |     | <=2 years |  |  | <=5 years |  |  |          |      |  |       | 
|                                                                         |  | £bn       |     |  | £bn        |  |     | £bn         |  |  | £bn        |  |  | £bn         |     |  | £bn       |  |     | £bn       |  |  | £bn       |  |  | £bn      |      |  | £bn   | 
|2016                                                                     |  |           |     |  |            |  |     |             |  |  |            |  |  |             |     |  |           |  |     |           |  |  |           |  |  |          |      |  |       |  |      |  |  |  |      |  |  |  |      | 
|Downstreamed from Santander UK Group Holdings plc to Santander UK plc(1) | 
|Senior unsecured  public benchmark                                      |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  | 2.7  |  |  |  | 1.3  |  |  |  | 4.0  | 
| privately placed                                                       |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  |     |  |  |  | 0.1  |  |  |  | 0.1  | 
|Subordinated liabilities and equity (including
AT1 issuances)            |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  | 0.8  |  |  |  | 1.7  |  |  |  | 2.5  | 
|                                                                         |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  | 3.5  |  |  |  | 3.1  |  |  |  | 6.6  | 
|Other Santander UK plc                                                   |  |           |     |  |            |  |     |             |  |  |            |  |  |             |     |  |           |  |     |           |  |  |           |  |  |          |      |  |       |  |      |  |  |  |      |  |  |  |      | 
|Deposits by banks                                                        |  |           | 0.1 |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  | 0.1       |  |  |          |     |  |       |  |     |  |  |  |     |  |  |  | 0.1  | 
|Senior unsecured  public benchmark(2)                                   |  |           |    |  |            |  | 0.9 |             |  |  |           |  |  |             | 0.9 |  |           |  |    |           |  |  | 1.8       |  |  |          | 2.1  |  |       |  | 6.7  |  |  |  | 2.1  |  |  |  | 12.7 | 
| privately placed(2)                                                    |  |           | 0.9 |  |            |  |    |             |  |  |           |  |  |             | 0.4 |  |           |  | 0.2 |           |  |  | 1.5       |  |  |          | 0.6  |  |       |  | 1.4  |  |  |  | 0.2  |  |  |  | 3.7  | 
|Covered bonds(2)                                                         |  |           | 1.0 |  |            |  |    |             |  |  | 0.8        |  |  |             |    |  |           |  | 1.4 |           |  |  | 3.2       |  |  |          | 1.8  |  |       |  | 6.1  |  |  |  | 4.1  |  |  |  | 15.2 | 
|Securitisation and structured issuance(3)                                |  |           | 0.8 |  |            |  | 0.3 |             |  |  | 1.1        |  |  |             | 1.4 |  |           |  | 0.9 |           |  |  | 4.5       |  |  |          | 1.3  |  |       |  | 0.7  |  |  |  | 0.6  |  |  |  | 7.1  | 
|Term Funding Scheme                                                      |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  | 4.5  |  |  |  |     |  |  |  | 4.5  | 
|Subordinated liabilities                                                 |  |           | 0.1 |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  | 0.1       |  |  |          | 0.2  |  |       |  | 0.2  |  |  |  | 2.2  |  |  |  | 2.7  | 
|                                                                         |  |           | 2.9 |  |            |  | 1.2 |             |  |  | 1.9        |  |  |             | 2.7 |  |           |  | 2.5 |           |  |  | 11.2      |  |  |          | 6.0  |  |       |  | 19.6 |  |  |  | 9.2  |  |  |  | 46.0 | 
|Other group entities                                                     |  |           |     |  |            |  |     |             |  |  |            |  |  |             |     |  |           |  |     |           |  |  |           |  |  |          |      |  |       |  |      |  |  |  |      |  |  |  |      | 
|Deposits by banks                                                        |  |           | 0.4 |  |            |  |    |             |  |  |           |  |  |             | 0.2 |  |           |  |    |           |  |  | 0.6       |  |  |          |     |  |       |  |     |  |  |  |     |  |  |  | 0.6  | 
|Certificates of deposit and commercial paper                             |  |           | 2.9 |  |            |  | 3.1 |             |  |  | 1.3        |  |  |             | 0.7 |  |           |  | 0.4 |           |  |  | 8.4       |  |  |          |     |  |       |  |     |  |  |  |     |  |  |  | 8.4  | 
|Senior unsecured  privately placed(2)                                   |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          | 0.1  |  |       |  | 0.5  |  |  |  | 0.5  |  |  |  | 1.1  | 
|Securitisation and structured issuance(4)                                |  |           | 0.3 |  |            |  | 0.3 |             |  |  | 0.2        |  |  |             | 0.2 |  |           |  | 0.2 |           |  |  | 1.2       |  |  |          | 0.9  |  |       |  | 0.4  |  |  |  |     |  |  |  | 2.5  | 
|                                                                         |  |           | 3.6 |  |            |  | 3.4 |             |  |  | 1.5        |  |  |             | 1.1 |  |           |  | 0.6 |           |  |  | 10.2      |  |  |          | 1.0  |  |       |  | 0.9  |  |  |  | 0.5  |  |  |  | 12.6 | 
|Total                                                                    |  |           | 6.5 |  |            |  | 4.6 |             |  |  | 3.4        |  |  |             | 3.8 |  |           |  | 3.1 |           |  |  | 21.4      |  |  |          | 7.0  |  |       |  | 24.0 |  |  |  | 12.8 |  |  |  | 65.2 | 
|Of which:  secured                                                      |  |           | 2.1 |  |            |  | 0.6 |             |  |  | 2.1        |  |  |             | 1.6 |  |           |  | 2.5 |           |  |  | 8.9       |  |  |          | 4.0  |  |       |  | 11.7 |  |  |  | 4.7  |  |  |  | 29.3 | 
| unsecured                                                              |  |           | 4.4 |  |            |  | 4.0 |             |  |  | 1.3        |  |  |             | 2.2 |  |           |  | 0.6 |           |  |  | 12.5      |  |  |          | 3.0  |  |       |  | 12.3 |  |  |  | 8.1  |  |  |  | 35.9 | 
|                                                                         |  |           |     |  |            |  |     |             |  | 
|2015(5)                                                                  |  |           |     |  |            |  |     |             |  |  |            |  |  |             |     |  |           |  |     |           |  |  |           |  |  |          |      |  |       |  |      |  |  |  |      |  |  |  |      | 
|Downstreamed from Santander UK Group Holdings plc to Santander UK plc(1) | 
|Senior unsecured  public benchmark                                      |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  | 0.8  |  |  |  |     |  |  |  | 0.8  | 
|Subordinated liabilities and equity (including AT1 issuances)            |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  | 0.8  |  |  |  | 1.7  |  |  |  | 2.5  | 
|                                                                         |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          |     |  |       |  | 1.6  |  |  |  | 1.7  |  |  |  | 3.3  | 
|Other Santander UK plc                                                   |  |           |     |  |            |  |     |             |  |  |            |  |  |             |     |  |           |  |     |           |  |  |           |  |  |          |      |  |       |  |      |  |  |  |      |  |  |  |      | 
|Deposits by banks                                                        |  |           | 0.1 |  |            |  | 0.2 |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  | 0.3       |  |  |          |     |  |       |  |     |  |  |  |     |  |  |  | 0.3  | 
|Securitisation and structured issuance(3)                                |  |           | 0.9 |  |            |  |    |             |  |  | 0.7        |  |  |             | 1.3 |  |           |  | 0.5 |           |  |  | 3.4       |  |  |          | 4.4  |  |       |  | 1.7  |  |  |  | 0.7  |  |  |  | 10.2 | 
|Subordinated liabilities                                                 |  |           |    |  |            |  |    |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  |          |  |  |          | 0.1  |  |       |  | 0.4  |  |  |  | 2.3  |  |  |  | 2.8  | 
|                                                                         |  |           | 1.0 |  |            |  | 0.2 |             |  |  | 0.7        |  |  |             | 1.3 |  |           |  | 0.5 |           |  |  | 3.7       |  |  |          | 4.5  |  |       |  | 2.1  |  |  |  | 3.0  |  |  |  | 13.3 | 
|Other group entities                                                     |  |           |     |  |            |  |     |             |  |  |            |  |  |             |     |  |           |  |     |           |  |  |           |  |  |          |      |  |       |  |      |  |  |  |      |  |  |  |      | 
|Deposits by banks                                                        |  |           | 0.1 |  |            |  | 0.6 |             |  |  |           |  |  |             |    |  |           |  |    |           |  |  | 0.7       |  |  |          |     |  |       |  |     |  |  |  |     |  |  |  | 0.7  | 
|Certificates of deposit and commercial paper                             |  |           | 1.6 |  |            |  | 3.2 |             |  |  | 1.7        |  |  |             | 0.6 |  |           |  | 0.1 |           |  |  | 7.2       |  |  |          |     |  |       |  |     |  |  |  |     |  |  |  | 7.2  | 
|Senior unsecured  public benchmark(2)                                   |  |           |    |  |            |  |    |             |  |  | 0.7        |  |  |             |    |  |           |  |    |           |  |  | 0.7       |  |  |          | 1.8  |  |       |  | 7.1  |  |  |  | 3.0  |  |  |  | 12.6 | 
| privately placed(2)                                                    |  |           | 0.5 |  |            |  |    |             |  |  | 0.2        |  |  |             | 0.7 |  |           |  | 0.6 |           |  |  | 2.0       |  |  |          | 1.8  |  |       |  | 2.0  |  |  |  | 0.2  |  |  |  | 6.0  | 
|Covered bonds(2)                                                         |  |           |    |  |            |  |    |             |  |  |           |  |  |             | 0.9 |  |           |  | 1.6 |           |  |  | 2.5       |  |  |          | 3.2  |  |       |  | 3.7  |  |  |  | 6.9  |  |  |  | 16.3 | 
|Securitisation and structured issuance(4)                                |  |           | 0.9 |  |            |  | 0.7 |             |  |  | 0.7        |  |  |             | 0.8 |  |           |  | 1.2 |           |  |  | 4.3       |  |  |          | 0.4  |  |       |  | 0.6  |  |  |  |     |  |  |  | 5.3  | 
|                                                                         |  |           | 3.1 |  |            |  | 4.5 |             |  |  | 4.0        |  |  |             | 3.0 |  |           |  | 3.5 |           |  |  | 17.4      |  |  |          | 7.2  |  |       |  | 13.4 |  |  |  | 10.1 |  |  |  | 48.1 | 
|Total                                                                    |  |           | 4.1 |  |            |  | 4.7 |             |  |  | 4.0        |  |  |             | 4.3 |  |           |  | 4.0 |           |  |  | 21.1      |  |  |          | 11.7 |  |       |  | 17.1 |  |  |  | 14.8 |  |  |  | 64.7 | 
|Of which:  secured                                                      |  |           | 1.8 |  |            |  | 0.7 |             |  |  | 1.4        |  |  |             | 3.0 |  |           |  | 3.3 |           |  |  | 10.2      |  |  |          | 8.0  |  |       |  | 6.0  |  |  |  | 7.6  |  |  |  | 31.8 | 
| unsecured                                                              |  |           | 2.3 |  |            |  | 4.0 |             |  |  | 2.6        |  |  |             | 1.3 |  |           |  | 0.7 |           |  |  | 10.9      |  |  |          | 3.7  |  |       |  | 11.1 |  |  |  | 7.2  |  |  |  | 32.9 | 



|(1) | Currently all our senior debt issued out of Santander UK Group Holdings plc is downstreamed into Santander UK plc on an equivalent rankings basis (e.g. senior unsecured is downstreamed as senior unsecured, subordinated
capital instruments are downstreamed as subordinated capital instruments, etc.). However, under the end-state MREL / TLAC regime, senior unsecured debt issued out of Santander UK Group Holdings plc will be downstreamed in a form that is subordinated
to senior unsecured debt, but senior to subordinated capital instruments issued out of Santander UK plc.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | With effect on and from 1 June 2016, Santander UK plc was substituted in place of Abbey National Treasury Services plc as principal obligor under its existing senior unsecured wholesale securities. For more on this
see Notes 29 and 30 to the Consolidated Financial Statements.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | This includes funding from mortgage-backed securitisation vehicles where Santander UK plc is the asset originator.
|--- | ------------------------------------------------------------------------------------------------------------------

|(4) | This includes funding from asset-backed securitisation vehicles where entities other than Santander UK plc are the asset originator.
|--- | ------------------------------------------------------------------------------------------------------------------------------------

|(5) | The 2015 numbers in this table are unaudited.
|--- | ---------------------------------------------





100Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Currency composition of wholesale funds

This table shows our wholesale funding by major currency at 31 December 2016 and 2015.



|                                                                      |  |      |          |  |   |  |           |                  |  |  |      |  |  |  |       |  |   |  |  |   |  |  |          |  |  |   |           |  |  |  |      |  |  |  |       | 
|--------------------------------------------------------------------- |  | ---- | -------- |  | - |  | --------- | ---------------- |  |  | ---- |  |  |  | ----- |  | - |  |  | - |  |  | -------- |  |  | - | --------- |  |  |  | ---- |  |  |  | ----- | 
|                                                                      |  | 2016 |          |  |   |  |           | 2015 (unaudited) | 
|                                                                      |  |      | Sterling |  |   |  | US Dollar |                  |  |  | Euro |  |  |  | Other |  |   |  |  |   |  |  | Sterling |  |  |   | US Dollar |  |  |  | Euro |  |  |  | Other | 
|                                                                      |  | %    |          |  | % |  |           | %                |  |  | %    |  |  |  |       |  | % |  |  | % |  |  | %        |  |  | % |          
|Downstreamed from Santander UK Group Holdings plc to Santander UK plc | 
|Senior unsecured  public benchmark                                   |  |      | 12       |  |   |  | 63        |                  |  |  | 21   |  |  |  | 4     |  |   |  |  |   |  |  |         |  |  |   | 80        |  |  |  |     |  |  |  | 20    | 
| privately placed                                                    |  |      |         |  |   |  |          |                  |  |  |     |  |  |  | 100   |  |   |  |  |   |  |  |         |  |  |   |          |  |  |  |     |  |  |  |      | 
|Subordinated liabilities and equity (including
AT1 issuances)         |  |      | 61       |  |   |  | 39        |                  |  |  |     |  |  |  |      |  |   |  |  |   |  |  | 61       |  |  |   | 39        |  |  |  |     |  |  |  |      | 
|                                                                      |  |      | 31       |  |   |  | 53        |                  |  |  | 13   |  |  |  | 3     |  |   |  |  |   |  |  | 46       |  |  |   | 49        |  |  |  |     |  |  |  | 5     | 
|Other Santander UK plc                                                |  |      |          |  |   |  |           |                  |  |  |      |  |  |  |       |  |   |  |  |   |  |  |          |  |  |   |           |  |  |  |      |  |  |  |       | 
|Deposits by banks                                                     |  |      | 33       |  |   |  | 67        |                  |  |  |     |  |  |  |      |  |   |  |  |   |  |  | 22       |  |  |   | 78        |  |  |  |     |  |  |  |      | 
|Senior unsecured  public benchmark                                   |  |      | 12       |  |   |  | 49        |                  |  |  | 39   |  |  |  |      |  |   |  |  |   |  |  |         |  |  |   |          |  |  |  |     |  |  |  |      | 
| privately placed                                                    |  |      | 3        |  |   |  | 1         |                  |  |  | 93   |  |  |  | 3     |  |   |  |  |   |  |  |         |  |  |   |          |  |  |  |     |  |  |  |      | 
|Covered bonds                                                         |  |      | 41       |  |   |  |          |                  |  |  | 58   |  |  |  | 1     |  |   |  |  |   |  |  |         |  |  |   |          |  |  |  |     |  |  |  |      | 
|Securitisation and structured issuance                                |  |      | 59       |  |   |  | 29        |                  |  |  | 12   |  |  |  |      |  |   |  |  |   |  |  | 59       |  |  |   | 25        |  |  |  | 16   |  |  |  |      | 
|Term Funding Scheme                                                   |  |      | 100      |  |   |  |          |                  |  |  |     |  |  |  |      |  |   |  |  |   |  |  |         |  |  |   |          |  |  |  |     |  |  |  |      | 
|Subordinated liabilities                                              |  |      | 55       |  |   |  | 45        |                  |  |  |     |  |  |  |      |  |   |  |  |   |  |  | 55       |  |  |   | 44        |  |  |  |     |  |  |  | 1     | 
|                                                                      |  |      | 39       |  |   |  | 21        |                  |  |  | 39   |  |  |  | 1     |  |   |  |  |   |  |  | 56       |  |  |   | 32        |  |  |  | 12   |  |  |  |      | 
|Other group entities                                                  |  |      |          |  |   |  |           |                  |  |  |      |  |  |  |       |  |   |  |  |   |  |  |          |  |  |   |           |  |  |  |      |  |  |  |       | 
|Deposits by banks                                                     |  |      | 7        |  |   |  | 93        |                  |  |  |     |  |  |  |      |  |   |  |  |   |  |  | 9        |  |  |   | 91        |  |  |  |     |  |  |  |      | 
|Certificates of deposit and commercial paper                          |  |      | 31       |  |   |  | 68        |                  |  |  | 1    |  |  |  |      |  |   |  |  |   |  |  | 35       |  |  |   | 48        |  |  |  | 17   |  |  |  |      | 
|Senior unsecured  public benchmark                                   |  |      |         |  |   |  |          |                  |  |  |     |  |  |  |      |  |   |  |  |   |  |  | 13       |  |  |   | 41        |  |  |  | 46   |  |  |  |      | 
| privately placed                                                    |  |      | 22       |  |   |  | 59        |                  |  |  | 19   |  |  |  |      |  |   |  |  |   |  |  | 9        |  |  |   | 9         |  |  |  | 79   |  |  |  | 3     | 
|Covered bonds                                                         |  |      |         |  |   |  |          |                  |  |  |     |  |  |  |      |  |   |  |  |   |  |  | 35       |  |  |   |          |  |  |  | 64   |  |  |  | 1     | 
|Securitisation and structured issuance                                |  |      | 87       |  |   |  | 5         |                  |  |  | 8    |  |  |  |      |  |   |  |  |   |  |  | 36       |  |  |   | 34        |  |  |  | 30   |  |  |  |      | 
|                                                                      |  |      | 41       |  |   |  | 55        |                  |  |  | 4    |  |  |  |      |  |   |  |  |   |  |  | 26       |  |  |   | 24        |  |  |  | 50   |  |  |  |      | 
|Total                                                                 |  |      | 39       |  |   |  | 30        |                  |  |  | 30   |  |  |  | 1     |  |   |  |  |   |  |  | 33       |  |  |   | 26        |  |  |  | 40   |  |  |  | 1     | 

Reconciliation of wholesale funding to the balance sheet

This table reconciles our wholesale funding to our balance sheet at 31 December 2016 and 2015.



|                                             |  |          |      |  |                         |  |     |              |  |  |             |  |  |               |      |     |            |  |     |              |  |  |                   |  |  |  |     |  |  |  |     | 
|-------------------------------------------- |  | -------- | ---- |  | ----------------------- |  | --- | ------------ |  |  | ----------- |  |  | ------------- | ---- | --- | ---------- |  | --- | ------------ |  |  | ----------------- |  |  |  | --- |  |  |  | --- | 
|                                             |  |          |      |  | Balance sheet line item | 
|                                             |  | Funding  |      |  | Deposits                |  |     | Deposits by  |  |  | Trading     |  |  | Financial     |      |     | Debt       |  |     | Subordinated |  |  |                   | 
|                                             |  | analysis |      |  | by banks                |  |     | customers(1) |  |  | liabilities |  |  | liabilities   |      |     | securities |  |     | liabilities  |  |  | Share capital and | 
|                                             |  |          |      |  |                         |  |     |              |  |  |             |  |  | at fair value |      |     | in issue   |  |     |              |  |  | other equity(2)   | 
|                                             |  | £bn      |      |  | £bn                     |  |     | £bn          |  |  | £bn         |  |  | £bn           |      |     | £bn        |  |     | £bn          |  |  | £bn               | 
|2016                                         |  |          |      |  |                         |  |     |              |  |  |             |  |  |               |      |     |            |  |     |              |  |  |                   |  |  |  |     |  |  |  |     | 
|Deposits by banks                            |  |          | 0.7  |  |                         |  | 0.3 |              |  |  |            |  |  |               | 0.4  |     |            |  |    |              |  |  |                  |  |  |  |    |  |  |  |    | 
|Certificates of deposit and commercial paper |  |          | 8.4  |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  | 0.5 |              |  |  | 7.9               |  |  |  |    |  |  |  |    | 
|Senior unsecured  public benchmark          |  |          | 16.7 |  |                         |  |    |              |  |  | 4.1         |  |  |               |     |     |            |  |    |              |  |  | 12.6              |  |  |  |    |  |  |  |    | 
| privately placed                           |  |          | 4.9  |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  | 1.4 |              |  |  | 3.5               |  |  |  |    |  |  |  |    | 
|Covered bonds                                |  |          | 15.2 |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  |    |              |  |  | 15.2              |  |  |  |    |  |  |  |    | 
|Securitisation and structured issuance       |  |          | 9.6  |  |                         |  | 2.1 | (3)          |  |  | 0.5         |  |  |               |     |     |            |  |    |              |  |  | 7.0               |  |  |  |    |  |  |  |    | 
|Term Funding Scheme                          |  |          | 4.5  |  |                         |  | 4.5 |              |  |  |            |  |  |               |     |     |            |  |    |              |  |  |                  |  |  |  |    |  |  |  |    | 
|Subordinated liabilities and equity          |  |          | 5.2  |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  |    |              |  |  |                  |  |  |  | 3.4 |  |  |  | 1.8 | 
|Total wholesale funding                      |  |          | 65.2 |  |                         |  | 6.9 |              |  |  | 4.6         |  |  |               | 0.4  |     |            |  | 1.9 |              |  |  | 46.2              |  |  |  | 3.4 |  |  |  | 1.8 | 
|Repos                                        |  |          | 8.8  |  |                         |  |    |              |  |  |            |  |  |               | 8.8  |     |            |  |    |              |  |  |                  |  |  |  |    |  |  |  |    | 
|Foreign exchange and hedge accounting        |  |          | 5.4  |  |                         |  |    |              |  |  | 0.4         |  |  |               |     |     |            |  |    |              |  |  | 4.1               |  |  |  | 0.9 |  |  |  |    | 
|Other                                        |  |          | 9.8  |  |                         |  | 2.9 | (3)          |  |  |            |  |  |               | 6.4  | (4) |            |  | 0.5 |              |  |  |                  |  |  |  |    |  |  |  |    | 
|Balance sheet total                          |  |          | 89.2 |  |                         |  | 9.8 |              |  |  | 5.0         |  |  |               | 15.6 |     |            |  | 2.4 |              |  |  | 50.3              |  |  |  | 4.3 |  |  |  | 1.8 | 
|2015(unaudited)                              |  |          |      |  |                         |  |     |              |  |  |             |  |  |               |      |     |            |  |     |              |  |  |                   |  |  |  |     |  |  |  |     | 
|Deposits by banks                            |  |          | 1.0  |  |                         |  |    |              |  |  |            |  |  |               | 1.0  |     |            |  |    |              |  |  |                  |  |  |  |    |  |  |  |    | 
|Certificates of deposit and commercial paper |  |          | 7.2  |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  |    |              |  |  | 7.2               |  |  |  |    |  |  |  |    | 
|Senior unsecured  public benchmark          |  |          | 13.4 |  |                         |  |    |              |  |  | 0.8         |  |  |               |     |     |            |  |    |              |  |  | 12.6              |  |  |  |    |  |  |  |    | 
| privately placed                           |  |          | 6.0  |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  | 2.0 |              |  |  | 4.0               |  |  |  |    |  |  |  |    | 
|Covered bonds                                |  |          | 16.3 |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  |    |              |  |  | 16.3              |  |  |  |    |  |  |  |    | 
|Securitisation and structured issuance       |  |          | 15.5 |  |                         |  | 4.2 | (3)          |  |  | 0.5         |  |  |               | 1.1  |     |            |  |    |              |  |  | 9.7               |  |  |  |    |  |  |  |    | 
|Subordinated liabilities and equity          |  |          | 5.3  |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  |    |              |  |  |                  |  |  |  | 3.5 |  |  |  | 1.8 | 
|Total wholesale funding                      |  |          | 64.7 |  |                         |  | 4.2 |              |  |  | 1.3         |  |  |               | 2.1  |     |            |  | 2.0 |              |  |  | 49.8              |  |  |  | 3.5 |  |  |  | 1.8 | 
|Repos                                        |  |          | 6.6  |  |                         |  |    |              |  |  |            |  |  |               | 6.6  |     |            |  |    |              |  |  |                  |  |  |  |    |  |  |  |    | 
|Foreign exchange and hedge accounting        |  |          | 0.3  |  |                         |  |    |              |  |  |            |  |  |               |     |     |            |  |    |              |  |  | (0.1)             |  |  |  | 0.4 |  |  |  |    | 
|Other                                        |  |          | 8.1  |  |                         |  | 4.1 | (3)          |  |  |            |  |  |               | 4.0  | (4) |            |  |    |              |  |  |                  |  |  |  |    |  |  |  |    | 
|Balance sheet total                          |  |          | 79.7 |  |                         |  | 8.3 |              |  |  | 1.3         |  |  |               | 12.7 |     |            |  | 2.0 |              |  |  | 49.7              |  |  |  | 3.9 |  |  |  | 1.8 | 



|(1) | This is included in our balance sheet total of £177,172m (2015: £164,074m).
|--- | ---------------------------------------------------------------------------

|(2) | This is £14m (2015: £14m) fixed/floating rate non-cumulative callable preference shares, £235m (2015: £235m) Step-up Callable Perpetual Reserve Capital Instruments, £nil (2015: £7m)
of Step-up Callable Perpetual Preferred Securities and £1,550m (2015: £1,550m) Perpetual Capital Securities. See Note 36 to the Consolidated Financial Statements.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Securitisation and structured issuance comprise of repurchase agreements. Other comprises of items in the course of transmission and other deposits, excluding the Term Funding Scheme. See Note 26 to the Consolidated
Financial Statements.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Short positions in securities and unsettled trades, cash collateral and short-term deposits. See Note 28 to the Consolidated Financial Statements.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc101



---

##### Table of Contents



Annual Report 2016

Risk review









As well as deposit and wholesale funding, we have access to the UK Government schemes included in the table below. For each of these schemes, eligible collateral includes
all collateral that is eligible in the Bank of Englands Discount Window Facility.



|                                     |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|------------------------------------ |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                     | 
|Scheme                               |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                     | 
|Term Funding Scheme (TFS)            |  | The TFS aims to reinforce the transmission of Base Rate cuts
to the interest rates actually faced by households and businesses by providing term funding to banks at rates close to Base Rate. The TFS allows participants to borrow central bank reserves in exchange for eligible collateral. It links the price and
quantity of funding to net lending to UK households, the non-financial sector and non-bank credit providers over a specified period.
|                                     | 
|Funding for Lending Scheme (FLS)     |  | The FLS is designed to boost lending to UK households and
non-financial companies. It does this by giving funding to banks and building societies for an extended period  it links both the price and quantity of funding to the net UK non-financial sector lending over a specified period. The FLS lets
participants borrow UK Treasury bills in exchange for eligible collateral in a drawdown window.                                                
|                                     | 
|Contingent Term Repo Facility (CTRF) |  | The CTRF will be activated by the Bank of England in response
to actual or prospective market-wide stress. It gives short-term liquidity to the market through monthly auctions using eligible collateral as security.                                                                                                                                                                                                                                     
|                                     | 
|Indexed Long-Term Repo (ILTR)        |  | The ILTR is aimed at banks, building societies and broker-dealers with a predictable need for
liquid assets. The Bank of England offers funds via an ILTR operation once each calendar month, normally with a six-month maturity. Participants can borrow using eligible collateral as security.                                                                                                                                                           

Term issuance

In 2016, our external term
issuance (sterling equivalent) was:



|                                                                      |  |             |     |  |              |  |     |         |  |  |          |  |  |               |     |  |                  |  |      |  |  |  |      | 
|--------------------------------------------------------------------- |  | ----------- | --- |  | ------------ |  | --- | ------- |  |  | -------- |  |  | ------------- | --- |  | ---------------- |  | ---- |  |  |  | ---- | 
|                                                                      |  | Sterling£bn |     |  | US Dollar£bn |  |     | Euro£bn |  |  | Other£bn |  |  | Total 2016£bn |     |  | Total 2015(1)£bn | 
|Downstreamed from Santander UK Group Holdings plc to Santander UK plc |  |             |     |  |              |  |     |         | 
|Senior unsecured  public benchmark                                   |  |             | 0.5 |  |              |  | 1.8 |         |  |  | 0.8      |  |  |               |    |  |                  |  | 3.1  |  |  |  | 0.8  | 
| privately placed                                                    |  |             |    |  |              |  |    |         |  |  |         |  |  |               | 0.1 |  |                  |  | 0.1  |  |  |  |     | 
|Subordinated debt and equity (including AT1 issuance)                 |  |             |    |  |              |  |    |         |  |  |         |  |  |               |    |  |                  |  |     |  |  |  | 1.8  | 
|                                                                      |  |             | 0.5 |  |              |  | 1.8 |         |  |  | 0.8      |  |  |               | 0.1 |  |                  |  | 3.2  |  |  |  | 2.6  | 
|Other Santander UK plc                                                |  |             |     |  |              |  |     |         |  |  |          |  |  |               |     |  |                  |  |      |  |  |  |      | 
|Securitisations                                                       |  |             | 0.3 |  |              |  | 0.3 |         |  |  |         |  |  |               |    |  |                  |  | 0.6  |  |  |  | 1.0  | 
|Covered bonds                                                         |  |             | 0.5 |  |              |  |    |         |  |  | 0.1      |  |  |               |    |  |                  |  | 0.6  |  |  |  |     | 
|Term Funding Scheme                                                   |  |             | 4.5 |  |              |  |    |         |  |  |         |  |  |               |    |  |                  |  | 4.5  |  |  |  |     | 
|                                                                      |  |             | 5.3 |  |              |  | 0.3 |         |  |  | 0.1      |  |  |               |    |  |                  |  | 5.7  |  |  |  | 1.0  | 
|Other group entities                                                  |  |             |     |  |              |  |     |         |  |  |          |  |  |               |     |  |                  |  |      |  |  |  |      | 
|Securitisations                                                       |  |             | 0.8 |  |              |  |    |         |  |  |         |  |  |               |    |  |                  |  | 0.8  |  |  |  | 0.7  | 
|Covered bonds                                                         |  |             |    |  |              |  |    |         |  |  | 0.8      |  |  |               |    |  |                  |  | 0.8  |  |  |  | 1.4  | 
|Senior unsecured  public benchmark                                   |  |             |    |  |              |  | 1.4 |         |  |  |         |  |  |               |    |  |                  |  | 1.4  |  |  |  | 4.6  | 
| privately placed                                                    |  |             | 0.1 |  |              |  | 0.3 |         |  |  | 0.6      |  |  |               |    |  |                  |  | 1.0  |  |  |  | 1.8  | 
|                                                                      |  |             | 0.9 |  |              |  | 1.7 |         |  |  | 1.4      |  |  |               |    |  |                  |  | 4.0  |  |  |  | 8.5  | 
|Total gross issuances                                                 |  |             | 6.7 |  |              |  | 3.8 |         |  |  | 2.3      |  |  |               | 0.1 |  |                  |  | 12.9 |  |  |  | 12.1 | 

(1) The 2015 numbers in this table are unaudited.

2016 compared to 2015(unaudited)

Together with our immediate parent, Santander UK Group Holdings plc, our overall funding strategy remains to develop and sustain a diversified funding base. We also need
to fulfil regulatory requirements as well as to support our credit ratings. As in 2015, the majority of our new issuance in 2016 was in the unsecured markets. 2016 presented a challenging market for issuance. In the first half of the year market
sentiment was dominated by global economic growth concerns and fears centred around the Chinese economy and oil prices, resulting in weaker equity markets and a slump in bank capital. The UKs vote to leave the EU was followed by immediate
market volatility, sterling depreciation and further spread widening. However, the effects on credit were short lived and by August spreads were back to the immediate pre-referendum levels and continued to tighten, ultimately ending up at January
levels. In the face of geo-political and economic uncertainty, the Bank of England continued to provide support through further rounds of monetary stimulus, introducing the TFS and maintaining the low interest rate environment. The US election
result generated much activity in the rates space but credit remained stable.

Taking advantage of the constructive market windows through 2016, we remained active in
the wholesale markets. In addition, the TFS provides a useful source of low cost funding and we have utilised the scheme as part of our commitment to continue lending to UK individuals and business. In 2016, our term funding was £12.9bn (2015:
£12.1bn), of which £8.4bn (2015: £10.3bn) was medium-term issuance:

| | We issued two public senior unsecured securities and received downstreamed funding, in the form of loans that rank pari passu with our existing senior unsecured liabilities, from four public issuances by our immediate
parent. These downstreamed funding issuances from the Company included two USD SEC registered 5 year benchmarks totalling $2.5bn, as well as a £500m 10 year and a 1bn 7 year transaction.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | The two public issuances were USD SEC registered 3 year securities out of Abbey National Treasury Services plc totalling $2bn. With effect on and from 1 June 2016, Santander UK plc was substituted in place of Abbey
National Treasury Services plc as principal obligor in respect of these issuances.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | We also issued residential mortgage-backed securities, asset-backed securities and two public covered bonds.
|- | ------------------------------------------------------------------------------------------------------------

Maturities
in 2016 were £13.5bn (2015: £12.3bn). At 31 December 2016, 67% (2015: 67%) of wholesale funding had a maturity of greater than one year, with an overall residual duration of 41 months (2015: 43 months). The total drawdown from the
TFS was £4.5bn (2015: £nil) and £3.2bn (2015 £2.2bn) under FLS.





102Santander UK plc



---

##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





Encumbrance(unaudited)

An asset is
encumbered if it has been pledged as collateral against an existing liability. This means it is no longer available to secure funding, meet collateral needs or be sold to reduce future funding needs.

Being able to pledge assets as collateral is an integral part of a financial institutions operations. It includes:

| | Asset securitisation or related structured funding
|- | --------------------------------------------------

| | Pledging collateral to support using payment or settlement systems
|- | ------------------------------------------------------------------

| | Entering into derivatives, securities repurchase agreements and securities borrowing arrangements.
|- | --------------------------------------------------------------------------------------------------

We do various things
that lead to asset encumbrance. These include where we:

| | Enter into securitisation, covered bonds, and repurchase agreements (including central bank programmes) to access medium and long-term funding
|- | ----------------------------------------------------------------------------------------------------------------------------------------------

| | Enter into short-term funding transactions. These include repurchase agreements, reverse repurchase agreements and stock borrowing to support our trading strategies
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Participate in payment and settlement systems
|- | ---------------------------------------------

| | Post collateral as part of derivatives activity.
|- | ------------------------------------------------

We monitor our mix of secured and unsecured funding sources in our
funding plan. We aim to use our available collateral efficiently to raise secured funding and to meet our other collateralised obligations.

Our biggest source of
encumbrance is where we use our mortgage portfolio to raise funds via securitisation, covered bonds or other structured borrowing. We control our levels of encumbrance from these by setting a minimum level of unencumbered assets that must be
available after factoring in:

| | Our future funding plans
|- | ------------------------

| | Whether we can use our assets for our future collateral needs
|- | -------------------------------------------------------------

| | The impact of possible stress conditions
|- | ----------------------------------------

| | Our current level of encumbrance.
|- | ---------------------------------

On-balance sheet encumbered and unencumbered assets



|                                  |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|--------------------------------- |  | --------------------------------------------- | ------ |  | ------------- |  | ------ | -------------------------------------------------------------- |  |  | ------ |  |  |  | ------ |  | -------------------- |  |  | ----------------------------------------- |  |  | ------------ |  |  | ------------ | ------- |  | -- |  | ------ | -- |  |  | ------ |  |  |  | ------- |  |  |  | ------- | 
|                                  |  | Assets encumbered as a result of transactions |        |  |               |  |        | Other assets (comprising assets encumbered at the central bank |  |  |        | 
|                                  |  | with counterparties other than central banks  |        |  |               |  |        | and unencumbered assets)                                       |  |  |        | 
|                                  |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  | Assets not positioned at the central bank |  |  | Total        |  |  | Total
assets |        
|                                  |  | As a result                                   |        |  | As a result   |  |        | Other                                                          |  |  | Total  |  |  |  |        |  | Assets positioned    |  |  | Readily                                   |  |  | Other assets |  |  | Cannot be    |         |  |    |  |       
|                                  |  | of covered                                    |        |  | of securitis- |  |        |                                                                |  |  |        |  |  |  |        |  | at the central bank  |  |  | available for                             |  |  | capable of   |  |  | encumbered   |         |  |    |  |        |    | 
|                                  |  | bonds                                         |        |  | ations        |  |        |                                                                |  |  |        |  |  |  |        |  | (i.e. pre-positioned |  |  | encumbrance                               |  |  | being        |  |  |              |         |  |    |  |        |    | 
|                                  |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  | plus encumbered)     |  |  |                                           |  |  | encumbered   |  |  |              |         |  |    |  |        |    | 
|                                  |  | £m                                            |        |  | £m            |  |        | £m                                                             |  |  | £m     |  |  |  |        |  | £m                   |  |  | £m                                        |  |  | £m           |  |  | £m           |         |  | £m |  |        | £m | 
|2016                              |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|Cash and balances at central      |  |                                               |       |  |               |  |       |                                                                |  |  | 600    |  |  |  | 600    |  |                      |  |  |                                           |  |  | 370          |  |  |              | 16,137  |  |    |  |       |    |  |  |       |  |  |  | 16,507  |  |  |  | 17,107  | 
|banks(1)(2)                       |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|Trading assets                    |  |                                               |       |  |               |  |       |                                                                |  |  | 13,582 |  |  |  | 13,582 |  |                      |  |  |                                           |  |  |             |  |  |              | 2,807   |  |    |  | 13,646 |    |  |  |       |  |  |  | 16,453  |  |  |  | 30,035  | 
|Derivative financial instruments  |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 25,471 |  |  |  | 25,471  |  |  |  | 25,471  | 
|Financial assets designated at    |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              | 1,463   |  |    |  | 677    |    |  |  |       |  |  |  | 2,140   |  |  |  | 2,140   | 
|fair value                        |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|Loans and advances to banks       |  |                                               |       |  |               |  |       |                                                                |  |  | 115    |  |  |  | 115    |  |                      |  |  |                                           |  |  |             |  |  |              | 1,030   |  |    |  | 3,203  |    |  |  |       |  |  |  | 4,233   |  |  |  | 4,348   | 
|Loans and advances to customers   |  |                                               | 20,234 |  |               |  | 19,996 |                                                                |  |  | 25     |  |  |  | 40,255 |  |                      |  |  |                                           |  |  | 23,801       |  |  |              | 96,741  |  |    |  | 18,137 |    |  |  | 20,804 |  |  |  | 159,483 |  |  |  | 199,738 | 
|Loans and receivables securities  |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              | 257     |  |    |  |       |    |  |  |       |  |  |  | 257     |  |  |  | 257     | 
|Available-for-sale securities     |  |                                               |       |  |               |  |       |                                                                |  |  | 937    |  |  |  | 937    |  |                      |  |  |                                           |  |  |             |  |  |              | 9,624   |  |    |  |       |    |  |  |       |  |  |  | 9,624   |  |  |  | 10,561  | 
|Held-to maturity investments      |  |                                               |       |  |               |  |       |                                                                |  |  | 1,747  |  |  |  | 1,747  |  |                      |  |  |                                           |  |  |             |  |  |              | 4,901   |  |    |  |       |    |  |  |       |  |  |  | 4,901   |  |  |  | 6,648   | 
|Macro hedge of interest rate risk |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 1,098  |  |  |  | 1,098   |  |  |  | 1,098   | 
|Interests in other entities       |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 61     |  |  |  | 61      |  |  |  | 61      | 
|Intangible assets                 |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 2,316  |  |  |  | 2,316   |  |  |  | 2,316   | 
|Property, plant and equipment     |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  | 1,491  |    |  |  |       |  |  |  | 1,491   |  |  |  | 1,491   | 
|Retirement benefit assets         |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 398    |  |  |  | 398     |  |  |  | 398     | 
|Other assets                      |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 1,473  |  |  |  | 1,473   |  |  |  | 1,473   | 
|Total assets                      |  |                                               | 20,234 |  |               |  | 19,996 |                                                                |  |  | 17,006 |  |  |  | 57,236 |  |                      |  |  |                                           |  |  | 24,171       |  |  |              | 132,960 |  |    |  | 37,154 |    |  |  | 51,621 |  |  |  | 245,906 |  |  |  | 303,142 | 



|(1) | Encumbered cash and balances at central banks include minimum cash balances we are required to hold at central banks for regulatory purposes.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Readily realisable cash and balances at central banks are amounts held at central banks as part of our liquidity management activities.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------





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Annual Report 2016

Risk review











|                                  |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|--------------------------------- |  | --------------------------------------------- | ------ |  | ------------- |  | ------ | -------------------------------------------------------------- |  |  | ------ |  |  |  | ------ |  | -------------------- |  |  | ----------------------------------------- |  |  | ------------ |  |  | ------------ | ------- |  | -- |  | ------ | -- |  |  | ------ |  |  |  | ------- |  |  |  | ------- | 
|                                  |  | Assets encumbered as a result of transactions |        |  |               |  |        | Other assets (comprising assets encumbered at the central bank |  |  |        | 
|                                  |  | with counterparties other than central banks  |        |  |               |  |        | and unencumbered assets)                                       |  |  |        | 
|                                  |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  | Assets not positioned at the central bank |  |  | Total        |  |  | Total
assets |        
|                                  |  | As a result                                   |        |  | As a result   |  |        | Other                                                          |  |  | Total  |  |  |  |        |  | Assets positioned    |  |  | Readily                                   |  |  | Other assets |  |  | Cannot be    |         |  |    |  |       
|                                  |  | of covered                                    |        |  | of securitis- |  |        |                                                                |  |  |        |  |  |  |        |  | at the central bank  |  |  | available for                             |  |  | capable of   |  |  | encumbered   |         |  |    |  |        |    | 
|                                  |  | bonds                                         |        |  | ations        |  |        |                                                                |  |  |        |  |  |  |        |  | (i.e. pre-positioned |  |  | encumbrance                               |  |  | being        |  |  |              |         |  |    |  |        |    | 
|                                  |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  | plus encumbered)     |  |  |                                           |  |  | encumbered   |  |  |              |         |  |    |  |        |    | 
|                                  |  | £m                                            |        |  | £m            |  |        | £m                                                             |  |  | £m     |  |  |  |        |  | £m                   |  |  | £m                                        |  |  | £m           |  |  | £m           |         |  | £m |  |        | £m | 
|2015                              |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|Cash and balances at central      |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  | 340          |  |  |              | 16,502  |  |    |  |       |    |  |  |       |  |  |  | 16,842  |  |  |  | 16,842  | 
|banks(1)(2)                       |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|Trading assets                    |  |                                               |       |  |               |  |       |                                                                |  |  | 14,305 |  |  |  | 14,305 |  |                      |  |  |                                           |  |  |             |  |  |              | 2,298   |  |    |  | 7,358  |    |  |  |       |  |  |  | 9,656   |  |  |  | 23,961  | 
|Derivative financial instruments  |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 20,911 |  |  |  | 20,911  |  |  |  | 20,911  | 
|Financial assets designated at    |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              | 1,721   |  |    |  | 677    |    |  |  |       |  |  |  | 2,398   |  |  |  | 2,398   | 
|fair value                        |  |                                               |        |  |               |  |        |                                                                |  |  |        |  |  |  |        |  |                      |  |  |                                           |  |  |              |  |  |              |         |  |    |  |        |    |  |  |        |  |  |  |         |  |  |  |         | 
|Loans and advances to banks       |  |                                               |       |  |               |  |       |                                                                |  |  | 91     |  |  |  | 91     |  |                      |  |  |                                           |  |  |             |  |  |              | 462     |  |    |  | 2,995  |    |  |  |       |  |  |  | 3,457   |  |  |  | 3,548   | 
|Loans and advances to customers   |  |                                               | 23,390 |  |               |  | 24,111 |                                                                |  |  | 13     |  |  |  | 47,514 |  |                      |  |  |                                           |  |  | 27,648       |  |  |              | 96,872  |  |    |  | 5,640  |    |  |  | 20,371 |  |  |  | 150,531 |  |  |  | 198,045 | 
|Loans and receivables securities  |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              | 52      |  |    |  |       |    |  |  |       |  |  |  | 52      |  |  |  | 52      | 
|Available-for-sale securities     |  |                                               |       |  |               |  |       |                                                                |  |  | 1,716  |  |  |  | 1,716  |  |                      |  |  |                                           |  |  |             |  |  |              | 7,296   |  |    |  |       |    |  |  |       |  |  |  | 7,296   |  |  |  | 9,012   | 
|Macro hedge of interest rate risk |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 781    |  |  |  | 781     |  |  |  | 781     | 
|Interests in other entities       |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 48     |  |  |  | 48      |  |  |  | 48      | 
|Intangible assets                 |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 2,231  |  |  |  | 2,231   |  |  |  | 2,231   | 
|Property, plant and equipment     |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  | 1,597  |    |  |  |       |  |  |  | 1,597   |  |  |  | 1,597   | 
|Current tax assets                |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 49     |  |  |  | 49      |  |  |  | 49      | 
|Retirement benefit assets         |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 556    |  |  |  | 556     |  |  |  | 556     | 
|Other assets                      |  |                                               |       |  |               |  |       |                                                                |  |  |       |  |  |  |       |  |                      |  |  |                                           |  |  |             |  |  |              |        |  |    |  |       |    |  |  | 1,375  |  |  |  | 1,375   |  |  |  | 1,375   | 
|Total assets                      |  |                                               | 23,390 |  |               |  | 24,111 |                                                                |  |  | 16,125 |  |  |  | 63,626 |  |                      |  |  |                                           |  |  | 27,988       |  |  |              | 125,203 |  |    |  | 18,267 |    |  |  | 46,322 |  |  |  | 217,780 |  |  |  | 281,406 | 



|(1) | Encumbered cash and balances at central banks include minimum cash balances we are required to hold at central banks for regulatory purposes.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Readily realisable cash and balances at central banks are amounts held at central banks as part of our liquidity management activities.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------

Assets encumbered as a result of transactions with counterparties other than central banks mainly relate to funding we had secured against loans and advances to
customers, and cash collateral in trading assets that we posted to meet margin needs on derivatives.

Unencumbered assets classified as readily available for
encumbrance include cash and securities we hold in our eligible liquidity pool. They also include other unencumbered assets that give us a source of contingent liquidity. We do not rely on these extra unencumbered assets in our liquidity risk
appetite, but we might use some of them in a time of stress. We can create liquidity by using them as collateral for secured funding or through outright sale.

Unencumbered assets that are not classified as readily available for encumbrance are mainly derivatives and loans and advances to customers and banks.

Loans and advances to customers are only classified as readily available if they are already in a form we can use to raise funding without any other actions on our part.
This includes excess collateral that is already in a secured funding structure. It also includes collateral that is pre-positioned at central banks and is available for use in secured financing.

All other loans and advances are classified as not readily available, but some would still be suitable for use in secured funding structures.

Encumbrance of customer loans and advances

We have issued prime retail
mortgage-backed and other asset-backed securitised products to a diverse investor base through our mortgage-backed and other asset-backed funding programmes. For more on this, see Note 16 to the Consolidated Financial Statements.

We have raised funding with:

| | Mortgage-backed notes, both issued to third parties and retained  the latter being central bank eligible collateral for funding purposes in other Bank of England facilities
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Other asset-backed notes.
|- | -------------------------

We also have a covered bond programme. Under this, we issue securities to investors secured by
a pool of residential mortgages.

For more on how our notes issued from secured programmes (securitisations and covered bonds) have been issued externally and also
retained, and what we have used them for, see Notes 16 and 39 to the Consolidated Financial Statements.

2016 compared to 2015

Our level of encumbrance from external and internal issuance of securitisations and covered bonds decreased in 2016 as planned. This reflected our desire to shift new
wholesale funding issuance away from the secured markets where possible. We expect our overall level of encumbrance to continue to decrease in 2017.





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





CREDIT RATINGS(unaudited)

Contractual
credit rating downgrade exposure (cumulative cash flow)

This table shows the cash flow exposure of Santander UK plc to a credit rating downgrade:



|                                                 |  |                         |     |  |                       |  |     | 
|------------------------------------------------ |  | ----------------------- | --- |  | --------------------- |  | --- | 
|                                                 |  | Cumulative cash outflow |    
|                                                 |  | One-notchdowngrade£bn   |     |  | Two-notchdowngrade£bn | 
|2016                                             |  |                         |     |  |                       |  |     | 
|Securitisation derivatives                       |  |                         | 3.3 |  |                       |  | 3.4 | 
|Contingent liabilities and derivatives margining |  |                         | 1.3 |  |                       |  | 1.6 | 
|Total contractual funding or margin requirements |  |                         | 4.6 |  |                       |  | 5.0 | 
|                                                 |  |                        
|2015                                             |  |                         |     |  |                       |  |     | 
|Securitisation derivatives                       |  |                         | 2.6 |  |                       |  | 2.6 | 
|Contingent liabilities and derivatives margining |  |                         | 2.0 |  |                       |  | 2.3 | 
|Total contractual funding or margin requirements |  |                         | 4.6 |  |                       |  | 4.9 | 





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Annual Report 2016

Risk review











Capital risk   Overview(unaudited)  Capital risk is the risk that we do not
have an adequate amount or quality of capital to meet our internal business objectives, regulatory requirements, market expectations and dividend payments, including AT1 coupons.
 In this section, we set out how we are regulated by the PRA (as a UK authorised banking group) and
the European Central Bank (ECB) as a member of Banco Santander. We also provide details of the Bank of Englands 2016 stress testing exercise and an update on emerging rules.
 We explain how we manage capital on a standalone basis as an autonomous subsidiary within Banco
Santander.  We then analyse our capital resources and key capital ratios.
 Key metrics(unaudited)
 CET1 capital ratio of 11.6% (2015: 11.6%)
 CET1 capital ratio remained at 11.6% in 2016, comfortably above the regulatory minimum. Steady
capital generation and RWA management offset by long-term rates volatility impact on the defined benefit pension scheme accounting position. RWAs were up 2% to £87.6bn, with asset growth and the impact of market volatility, which increased
credit and counterparty risk, partially offset by RWA management, including securitisation transactions. 
Total capital resources increased to £16.2bn (2015: £15.6bn)
 Capital resources increased with higher profits and steady capital generation, partially offset by
long-term rates volatility on the accounting position of the defined benefit pension scheme.






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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





THE SCOPE OF OUR CAPITAL ADEQUACY

Regulatory supervision

Santander UK plc is incorporated
in the UK. For capital purposes, we are subject to prudential supervision by the following regulators:

| | PRA: as a UK authorised banking group
|- | -------------------------------------

| | ECB: as a member of Banco Santander. The ECB supervises Banco Santander as part of the Single Supervisory Mechanism (SSM).
|- | --------------------------------------------------------------------------------------------------------------------------

Although we are part of Banco Santander, we do not have any guarantees from our ultimate parent Banco Santander SA and we operate as an autonomous subsidiary. As we are
regulated by the PRA, we have to meet the PRA capital requirements on a standalone basis. We also have to show the PRA that we can withstand capital stress tests without the support of our parent. Reinforcing our corporate governance framework, the
PRA exercises oversight through its rules and regulations on the Board and senior management appointments.

Santander UK Group Holdings plc is the holding company of
Santander UK plc and is the head of the Santander UK group for regulatory capital and leverage purposes. The basis of consolidation for our capital disclosures is the same one we use for our Consolidated Financial Statements.

2016 compared to 2015(unaudited)

In December 2016 the Bank of England laid out its plans for setting loss absorbing capacity requirements for large UK banks, including Santander UK. These requirements
are applicable from 1 January 2020, and we currently estimate a transitional MREL recapitalisation requirement of £7bn, in terms of January 2017 Pillar 2A requirements.

We plan to meet our requirement largely through the issuance of senior unsecured debt from our holding company. This debt will then be downstreamed to the operating
company in a compliant form. We have made good progress to date with £5.3bn of senior unsecured debt issued from our holding company to date.

CAPITAL RISK MANAGEMENT

Risk appetite

Our approach to capital management is centralised. We base it on the economic capital requirements of our business and what the regulators ask of us. We operate within
the capital risk framework and appetite approved by our Board. This takes into account the commercial environment we operate in, our strategy for each of our material risks and the potential impact of any adverse scenarios or stresses on our capital
position.

We decide how to allocate capital as part of our strategic planning. We base our decisions on the relative returns on capital using economic and
regulatory capital measures and we balance the return on capital generated by our established retail presence in the UK with our plans to grow our corporate presence. We achieve the efficient utilisation of economic and regulatory capital through
managing return on capital performance against targets, together with central capital management which includes the use of securitisations to reduce risk. The Board is responsible for capital management strategy and policy and ensuring that capital
resources are appropriately monitored and controlled within internal and regulatory limits. Authority for capital management flows to the CEO and from him to specific individuals who are members of the Capital Committee.

As we do not benefit from any guarantees from our parent and we are an autonomous subsidiary, the Board (and some subsidiary boards) are responsible for managing,
controlling and assuring capital risk. We quantify regulatory capital demand for credit, market, operational, pension obligation and securitisation risk in line with what the PRA requires of us.

The Capital Committee adopts a centralised capital management approach that is driven by Santander UKs corporate purpose and strategy. This approach takes into
account the commercial and regulatory environment in which Santander UK operates, Santander UKs Risk Appetite, the management strategy for each of our material risks (including whether or not capital provides an appropriate risk mitigant) and
the impact of appropriate adverse scenarios and stresses on our capital requirements. This approach is reviewed annually as part of the Santander UK ICAAP.

Decisions on the allocation of capital resources are conducted as part of Santander UKs strategic three year planning process based on the relative returns on
capital using both economic and regulatory capital measures. Capital allocations are reviewed in response to changes in Risk Appetite and risk management strategy, changes to the commercial environment, changes in key economic indicators or when
additional capital requests are received. This combination of regulatory and economic capital ratios and limits, internal buffers and restrictions, together with the relevant costs of differing capital instruments and a consideration of the various
other capital management techniques are used to shape the most cost-effective structure to fulfil our capital needs.

Santander UK plc, Abbey National Treasury
Services plc, and Cater Allen Limited, which are the three PRA-regulated entities within the Santander UK group, are party to a capital support deed dated 23 December 2015 (the Capital Support Deed) with certain other non-regulated subsidiaries
of Santander UK plc and Santander UK Group Holdings plc. The parties to the Capital Support Deed constitute a core UK group as defined in the PRA Rulebook. Exposures of each of the three regulated entities to other members of the core UK group are
exempt from large exposure limits that would otherwise apply. The purpose of the Capital Support Deed is to facilitate the prompt transfer of available capital resources from, or repayment of liabilities by, the non-regulated parties to any of the
regulated parties in the event that one of the regulated parties has breached or is at risk of breaching its capital resources requirements or risk concentrations requirements. The core UK group permission expires on 31 December 2018.





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Annual Report 2016

Risk review









Risk measurement

We apply Banco Santander SAs
approach to capital measurement and risk management for CRD IV. As a result, Santander UK plc is classified as a significant subsidiary of Banco Santander SA. For more on the CRD IV risk measurement of our exposures, see Banco Santander SAs
Pillar 3 report.

Key metrics (unaudited)

The main metrics we use to measure capital risk are:



|                    |  |                                                                      
|------------------- |  | ---------------------------------------------------------------------
|                    | 
|Key risk metrics    |  | Description                                                          
|                    | 
|CET1 capital ratio  |  | Common Equity Tier 1 capital as a percentage of risk-weighted
assets.
|                    | 
|Total capital ratio |  | CRD IV end-point Tier 1 capital divided by risk-weighted assets.     

Stress testing (unaudited)

We plan for severe
periods of stress and we set out what action we would take if an extremely severe period of stress threatened our viability and solvency. This could include suspending dividends, selling assets, reducing some business activity and issuing more
capital.

On an ongoing basis, and in accordance with the latest ICAAP review, we forecast our regulatory and internal capital requirements based on the approved
capital volumes allocated to business units as part of our corporate planning process. Each year we create a capital plan, as part of our ICAAP. We forecast our regulatory and internal capital needs and capital resources based on our medium-term
business plan.

Alongside this plan, we develop a series of macroeconomic scenarios to stress test our capital requirements and confirm that we have adequate
regulatory capital resources to meet our projected and stressed regulatory capital requirement and to meet our obligations as they fall due. Internally assigned buffers augment the various regulatory minimum capital criteria. We hold buffers to
ensure there is sufficient time for management actions to be implemented against unexpected movements.

The latest PRA stress test results were released on
30 November 2016. We significantly exceeded the PRAs stress test CET1 threshold requirement of 7.3%, with a stressed CET1 ratio of 9.9%. Additionally, we exceeded the leverage threshold requirement of 3.0%, with a stressed leverage ratio
of 3.6% after allowed management actions. We were the most resilient of the UK banks with a maximum draw down of 170 basis points on our CET1 ratio. The outcome of the stress test underlines the quality and strength of our UK-based balance sheet as
well as our strong risk management practices. The Bank of Englands CET1 hurdle rate comprises the CRR Pillar 1 minimum of 4.5% and the Pillar 2A CET1 minimum of 2.8%. The latter minimum came into effect on 1 January 2017 and represents an
increase of 0.6 percentage points over the previous Pillar 2A CET1 minimum of 2.2%, which was applicable until 31 December 2016.

Risk
mitigation

We manage capital transferability between our subsidiaries in line with our business strategy, our risk and capital management policies, and UK
laws and regulations. There are no legal restrictions on us moving capital resources promptly, or repaying liabilities, between the Company and its subsidiaries.



|                             |  |                                                                                                                                                                                                                                                                                                                                                             
|---------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                            
|Our approach to capital risk
|                             | 
|                            |  | Strategic capital risk management  each year
we create a capital plan, as part of our ICAAP. We forecast our regulatory and internal capital needs and capital resources based on our medium-term business plan. We also stress test our capital needs and resources using a set of macroeconomic
scenarios.                                               
|                             | 
|                            |  | Short-term, tactical capital risk management 
we monitor and report regularly against our capital plan to identify any change in business performance that might affect our capital. Every month, we also review the economic assumptions we use to create and stress test our capital plan. We do
this to identify any potential reduction in our capital.
|                             | 
|                            |  | Allocating capital resources  we decide how to
allocate capital as part of our strategic planning. We base our decisions on the relative returns on capital using economic and regulatory capital measures.                                                                                                                                                
|                             | 
|                            |  | Planning for severe periods of stress  we set out what action we would take if
an extremely severe period of stress threatened our viability and solvency. This could include suspending dividends, selling assets, reducing some business activity and issuing more capital.                                                                              

Risk monitoring and reporting

We monitor and report regularly against our capital plan to identify any change in business performance that might affect our capital. Every month, we also review the
economic assumptions we use to create and stress test our capital plan. We do this to identify any potential reduction in our capital.





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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





CAPITAL RISK REVIEW

Capital resources(unaudited)

Key capital ratios

The tables below are consistent with our regulatory filings for 2016 and 2015. Our key capital ratios were:



|                     |  |        |      |  |        |  |      | 
|-------------------- |  | ------ | ---- |  | ------ |  | ---- | 
|                     |  | 2016
% |      |  | 2015
% | 
|CET1 capital ratio   |  |        | 11.6 |  |        |  | 11.6 | 
|AT1                  |  |        | 1.8  |  |        |  | 1.8  | 
|Grandfathered Tier 1 |  |        | 0.8  |  |        |  | 0.8  | 
|Tier 2               |  |        | 4.3  |  |        |  | 4.0  | 
|Total capital ratio  |  |        | 18.5 |  |        |  | 18.2 | 

The total subordination available to Santander UK plc bondholders was 18.5% (2015: 18.2%) of RWAs.

2016 compared to 2015

The CET1 capital ratio remained at 11.6% at
31 December 2016 (2015: 11.6%), with steady capital generation and RWA management offset by long-term rates volatility impact on the defined benefit pension scheme accounting position.

Our total capital ratio increased to 18.5% at 31 December 2016 (2015: 18.2%), due to the issuance of Tier 2 instruments.

Regulatory capital resources

The table below is
consistent with our regulatory filings for 2016 and 2015. We manage our capital on a CRD IV basis. During the years ended 31 December 2016 and 2015, we held capital over and above our regulatory requirements, and managed internal capital
allocations and targets in accordance with our capital and risk management policies. This table shows our regulatory capital.



|                                             |  |         |        |   |         |  |        |  
|-------------------------------------------- |  | ------- | ------ | - | ------- |  | ------ | -
|                                             |  | 2016
£m |        |   | 2015
£m | 
|CET1 capital before regulatory adjustments   |  |         | 14,285 |   |         |  | 13,853 |  
|Total regulatory adjustments to CET1 capital |  |         | (4,084 | ) |         |  | (3,870 | )
|CET1 capital                                 |  |         | 10,201 |   |         |  | 9,983  |  
|AT1 capital                                  |  |         | 2,271  |   |         |  | 2,258  |  
|Tier 1 capital                               |  |         | 12,472 |   |         |  | 12,241 |  
|Tier 2 capital                               |  |         | 3,772  |   |         |  | 3,381  |  
|Total regulatory capital                     |  |         | 16,244 |   |         |  | 15,622 |  

CET1 regulatory adjustments

These are
adjustments to CET1 capital required by CRD IV.

AT1 capital

These are
preference shares and innovative/hybrid Tier 1 securities. None of the instruments we issued before 1 January 2014 fully meet the CRD IV AT1 capital rules, which apply from that date. These instruments will be phased out by CRD IV rules which
restrict their recognition as capital. The £750m Fixed Rate Reset Perpetual Additional Tier 1 Capital Securities (net of issuance costs) and the £800m Perpetual Capital Securities we issued since then fully meet the CRD IV AT1 capital
rules.

Tier 2 capital

These are fully CRD IV eligible Tier 2 instruments
and grandfathered Tier 2 instruments whose recognition as capital is being phased out under CRD IV.





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Annual Report 2016

Risk review











Pension risk(unaudited)    Overview
 Pension risk is the risk caused by our contractual or other liabilities with respect to a pension
scheme (whether established for our employees or those of a related company or otherwise). It also refers to the risk that we will need to make payments or other contributions with respect to a pension scheme due to a moral obligation or for some
other reason.  In this section, we explain how we manage pension risk, including how we mitigate
the risk.  Key metrics
 Deficit at Risk increased to £1,688m (2015:
£1,420m)  The Deficit at Risk increased to £1,688m due to significant falls in
long-term interest rates in 2016 that resulted in a higher estimated liability value and widened the gap between Scheme assets and liabilities. This was partially offset by higher interest rate hedging levels in the Scheme following the risk
management action undertaken in 2016.  Funded defined
benefit scheme accounting surplus reduced to £175m (2015: £483m)  The net
accounting surplus of the funded defined benefit pension schemes reduced to £175m. This was due to an increase in liabilities caused mainly by a fall in high grade corporate bond rates, partly offset by strong asset performance, and by changes
in our discount and inflation rate methodology assumptions.






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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





OUR KEY PENSION RISKS

Definition

Pension risk is one of our key financial
risks and arises mainly because Santander UK plc is the sponsor of the Santander (UK) Group Pension Scheme (the Scheme), a defined benefit scheme. Our risk is that over the long-term the Schemes assets, together with future returns and any
additional future contributions, might not be sufficient to meet liabilities as they fall due. Where the value of the Schemes assets is lower than the Schemes liabilities, we could have to (or might choose to) make extra contributions.
We might also need to hold more capital to reflect this risk.

Sources of risk

The key pension risk factors the Scheme is exposed to are the following:



| | Investment risk
|- | ---------------

| | Interest rate risk
|- | ------------------

| | Longevity risk
|- | --------------

| | Inflation risk
|- | --------------

The Scheme liabilities and their value mainly vary with changes in long-term interest rates, reflected in
changes in the reference bond yield, and inflation. In addition, due to the long-term nature of the obligation, the value of the Scheme is also impacted by changes to the longevity (i.e. the mortality) of Scheme members over time as well as changes
in their future salaries, and legislation. The Scheme liabilities are mainly in respect of current and past employees and are expected to stretch beyond 2080, with an average duration of 21 years. The Scheme assets are subject to investment risk and
mainly vary with changes in interest rates, inflation expectations, credit spreads, exchange rates and equity and property prices.

Both our accounting and
regulatory capital positions can be sensitive to changes in key economic data and assumptions used in our valuation methodologies. These include the assumptions used in our discount, inflation and mortality rates.

For more details on the size of our defined benefit pension schemes, as well as the nature of these risks, see Note 34 to the Consolidated Financial Statements, which
includes a sensitivity analysis showing the key actuarial assumptions that our defined benefit pension scheme accounting position is exposed to.

In addition to our
defined benefit schemes we also have a defined contribution plan for certain employees. This carries far less market risk exposure for us as it places the responsibility for choosing investments directly with employees. However, we remain exposed to
operational and reputational risks. To manage these risks, we monitor the performance of defined contribution investment funds and we engage with our people to ensure they are given enough information about the options available to them.

PENSION RISK MANAGEMENT

Scheme
governance

The Scheme operates under a trust deed. The corporate trustee, Santander (UK) Group Pension Trustee Limited (the Trustee) is a wholly owned
subsidiary of the Santander UK group. It delegates investment decisions to the board of Santander (CF) Trustee Limited (referred to as the Common Fund Trustee Board). It is a private limited company owned by six Trustee directors, three appointed by
Santander UK plc and three by the Trustee. The Common Fund Trustee Board was created in 2008 to make investment decisions on behalf of the Trustee, improving the investment decision making process. It meets on a monthly basis as the primary forum
for both the Trustee and us to propose, discuss, analyse and agree investment and risk management strategies.

In addition to reviewing our pension risk appetite and
approving actuarial valuations, the Santander UK Executive level Pensions Committee also discusses and forms views on the Schemes investment strategy before the Common Fund Trustee Board meetings. Whilst working together for the benefit of our
past and current employees, our responsibilities are clearly segregated from those of the Trustee.

Risk appetite

Our appetite for pension risk is reviewed by the Pensions Committee at least once a year before being sent to the Board for approval. We ensure that our risk appetite is
a key consideration in all decisions and risk management activities related to the Scheme.

We calculate risk metrics on both a technical provisions (funding) basis
and an accounting basis (measured according to IAS 19 Employee Benefits). We manage and hedge pension risk on the funding basis. However, we also consider the impact on the accounting valuation basis. Both the funding and the accounting
bases are key inputs into our capital calculations.





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Annual Report 2016

Risk review









Risk measurement

Our key risk metrics include:



|                          |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                          | 
|Key risk metrics          |  | Description                                                                                                                                                                                                                                                                                                                                                                                            
|                          | 
|Deficit at Risk           |  | We use a VaR and stress testing framework to model the assets
and liabilities of the Scheme to show the potential deterioration in the current position. This ensures we adequately capture the risks, diversification benefits and liability matching characteristics of the obligations and investments of the
Scheme. We use a time period of 1 year and a 95% confidence interval in our VaR model.
|                          | 
|Required Return           |  | This estimates the return required per annum from the assets
for the Scheme to reach a pre-defined surplus target by a fixed date in the future. The metric therefore provides a gauge on how much investment return is needed to close any funding deficit within a defined timeframe following the current
contribution schedule.                                                                    
|                          | 
|CET1 Deduction Volatility |  | This measures the potential for capital volatility due to the deduction to capital relating to
pensions.                                                                                                                                                                                                                                                                                               

Our stress testing examines the behaviour of the Scheme assets and liabilities in response to a range of deterministic
financial and demographic shocks. We incorporate the results, and their impact on our balance sheet, income statement and capital position, into our overall enterprise wide stress test results. We perform internal forward-looking stress testing on a
monthly basis and historic stress testing on a quarterly basis. We also perform stress tests to satisfy the requests of regulators such as the PRA, including for ICAAPs and PRA stress tests.

Risk mitigation

The key tools we use to mitigate
pension risk are:



|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                         |  |                                                                                                                                                                                                                                                                                                                                      
|--------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                      | 
|Key tools             |  | Description                                                                                                                                                                                                                                                                                                                                                                                            
|                      | 
|Investment strategies |  | The Trustee of the Santander (UK) Group Pension Scheme has developed the following investment principles:                                                                                                                                                                                                                                                                                              
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | To maintain a portfolio of suitable assets of appropriate quality, suitability and liquidity which will generate income and capital growth to meet, together with new contributions from members and the employers, the cost of current
and future benefits which the pension scheme provides, as set out in the trust deed and rules
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | To limit the risk of the assets failing to meet the liabilities, over the long term and on a shorter-term basis as required by prevailing legislation                                                                                                                                                                                
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | To invest in a manner appropriate to the nature and duration of the expected future retirement benefit payments                                                                                                                                                                                                                      
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | To minimise the long-term costs of the pension scheme by maximising the return on the assets whilst having regard to the objectives shown above.                                                                                                                                                                                     
|                      | 
|                      |  | The assets of the funded plans are held
independently of the Santander UK groups assets in separate trustee administered funds. Investment strategy across the Scheme remains under regular review. The Trustee invests the Scheme assets in a diversified portfolio of UK and overseas
equities, corporate and government bonds, property, infrastructure development opportunities and other assets.
|                      | 
|Hedging strategies    |  | The Trustee also maintains a hedging strategy to
mitigate inflation and interest rate risks. Any hedging decisions are made, after agreement in principle, with the Trustee and executed by the Common Fund Trustee Board after consultation with us. This includes investing in suitable fixed income and
inflation-linked assets, and entering into inflation and interest rate swaps.               
|                      | 
|Other mitigants       |  | We continue to mitigate pension risk in other ways. For example:                                                                                                                                                                                                                                                                                                                                       
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | In 2002, the Scheme was closed to new employees                                                                                                                                                                                                                                                                                      
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | In 2008, the Santander UK Common Fund Trustee was created to make investment and hedging decisions on behalf of the Trustee, improving the investment decision making process                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | In 2010 the cap applied to future pension increases for active members was lowered                                                                                                                                                                                                                                                   
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        
|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                        |  | From 1 March 2015, a new cap on pensionable pay increases of 1% each year was applied to colleagues in the Scheme.                                                                                                                                                                                                                   

Risk monitoring and reporting

We monitor pension risk on a monthly basis and report on our metrics at Executive Risk Control Committee, Pensions Committee and also, where certain thresholds are
exceeded (or likely to be), to the Board Risk Committee and the Board in accordance with our pension risk appetite. Senior management will then decide what, if any, remedial action should be recommended, which is then discussed with the Trustee.





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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





PENSION RISK REVIEW

2016 compared to 2015

Risk monitoring and measurement

In 2016, the Deficit at Risk increased to £1,688m (2015: £1,420m). This was mainly due to significant falls in long-term interest rates that resulted in a
higher estimated liability value and widened the gap between Scheme assets and liabilities. This was partially offset by higher interest rate hedging levels in the Scheme following the risk management action undertaken in 2016.

During 2016 Santander UK plc asked the Trustee to increase interest rate hedging to reduce the overall level of risk in the Scheme. As a result, at 31 December 2016
and on a funding basis, the interest rate hedging ratio had increased to 56% (2015: 50%). On an accounting basis the interest rate hedging ratio was 72% (2015: 64%). This change has reduced the potential volatility in Deficit at Risk caused by
changes in long-term interest rates and has partially offset the impact of the falls in long-term interest rates in the year. The inflation hedging ratio of the Scheme on a funding basis was 62% (2015: 65%) and on an accounting basis was 94% (2015:
99%).

We continue to focus on achieving the right balance between risk and reward. In 2016, portfolio management yielded positive performance mainly from
index-linked gilts, interest rate derivatives, real estate and equities. Our long-term objective is to reduce the risk of the Scheme and eliminate the deficit on a funding valuation basis. The triennial funding valuation commenced as at
31 March 2016. Negotiations are still ongoing with the Trustee, the outcome of which may impact our definition of long-term goals, the risk profile and our future contributions.

Accounting position

During 2016, the accounting surplus of the Scheme and
other funded arrangements reduced, with sections in surplus (retirement benefit assets) of £398m at 31 December 2016 (2015: £556m) and sections in deficit (retirement benefit obligations) of £223m at 31 December 2016
(2015: £73m). The overall position was a £175m surplus at 31 December 2016 (2015: £483m surplus). In addition there were unfunded defined benefit scheme liabilities of £39m at 31 December 2016 (2015: £37m).
The reduction in the overall position in 2016 was due to an increase in liabilities caused mainly by a fall in high grade corporate bond rates, which drive the discount rate, without a similar fall in inflation. This was partially offset by strong
asset performance and changes in our discount rate and inflation rate assumptions methodologies referred to in the case study below.

For more on our pension
obligations, including the current asset allocation and sensitivity to key risk factors, see Note 34 to the Consolidated Financial Statements.



Pension assumption reviewIAS 19 requires our methodology for calculating Scheme liabilities to have a discount rate based on market yields of
high quality corporate bonds of suitable duration and currency. There are only a limited number of higher quality Sterling denominated corporate bonds, particularly those that are longer dated. Therefore, in order to set a suitable discount rate, we
need to construct a corporate bond yield curve. There are a number of ways of projecting forward the bond curve beyond the longest dated corporate bond. In the past we projected the bond curve using a gilt yield curve, ignoring high and low outliers
in each duration bucket.  LOGO

In 2016 we looked at a number of alternatives to better reflect our estimate of long-dated credit risk in bond yields
appropriate for the cash flow liabilities of the Scheme. Following our review, we enhanced the way we set the discount rate. We now consider a number of different data sources and methods of projecting forward the corporate bond curve.
 When considering the different models, we project forward the expected cash
flows of the Scheme and adopt a single equivalent cash flow weighted discount rate, subject to management judgement. 
At the same time, we also enhanced our approach for setting the inflation assumption. In the past we used the spot inflation rate as implied by the
Bank of England inflation curve, adjusted for an inflation risk premium. To be consistent with our discount rate methodology, we now set the inflation assumption using the expected cash flows of the Scheme and fitting them to an inflation curve to
give a weighted average inflation assumption. We then adjust this by an inflation risk premium. We also adjusted the method of setting the inflation risk premium from a static measure to one based on the nominal level of implied
inflation.  The new models were subject to our pensions governance
framework and considered by the Board Audit Committee in November 2016. At 31 December 2016 these changes to our methodology assumptions reduced the value placed on the liabilities of the Scheme by £510m (net of tax) and had a 39 basis
points positive impact on the CET1 capital ratio.






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Annual Report 2016

Risk review











Conduct risk(unaudited)   Overview
 Conduct risk is the risk that our decisions and behaviours lead to a detriment or poor outcomes for
our customers and that we fail to maintain high standards of market behaviour and integrity.  Our
leadership team is committed to ensuring conduct strategy is embedded within the business and the fair treatment of customers is at the heart of what we do. 
In this section, we explain how we manage conduct risk. We also describe our main conduct remediation provisions, with a focus on PPI, and give some insight into how we
are supporting our older customers.  
Key metrics 
 PPI provision at 31 December 2016 amounted to
£457m (2015: £465m)  The PPI provision amounted to £457m at
31 December 2016. We made an additional £144m provision charge in the year, which included our best estimate of Plevin related claim costs and a £30m charge for a specific portfolio under a past business review. We will continue to
review our provision levels in respect of recent claims experience and once the final FCA guidance is published, and it is possible further PPI-related provision adjustments will be required in future years.
 Other conduct provisions at 31 December amounted to
£36m (2015: £172m)  Other conduct provisions relate predominately to wealth and
investment products.






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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





OUR KEY CONDUCT RISKS

Conduct risk is a key risk for us. We must comply with our conduct risk strategy and our conduct risk appetite to ensure we meet our aim to be the best bank for our
customers. Conduct risk can result from any activity we might engage in that could impact customer outcomes. We see our key exposure to conduct risk through risk of error in: product design; sales practices; post-sale servicing; our operational
processes; and complaint handling. All of these may result in the risk that we may sell products that do not meet our customers needs, align to their expectations or deliver the expected outcomes.

Our conduct risk statement includes four underlying types of risk:



|                              |  |                                                                                                                                                                                                                                                                                                                                                         
|----------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                              | 
|Key risks                     |  | Description                                                                                                                                                                                                                                                                                                                                             
|                              | 
|Product risk                  |  | The risk that we offer products and services that do not
result in the right outcomes for customers.                                                                                                                                                                                                                                                    
|                              | 
|Sales risk                    |  | The risk that we sell products and services to customers
without giving them enough information to make an informed decision or we do not provide correct advice.                                                                                                                                                                                       
|                              | 
|After-sale and servicing risk |  | The risk that failures of our operations, processes,
servicing activity, IT infrastructure or controls result in poor outcomes for customers. This includes the risk that we do not give appropriate after-sale communications to customers, making it difficult for them to contact us, or we fail to treat
customers in financial difficulties fairly.
|                              | 
|Culture risk                  |  | The risk that we do not maintain a culture where the customer is at the centre of what we
do.                                                                                                                                                                                                                                                           

Our primary regulator for conduct risk is the FCA, which focuses on the regulation of conduct by both retail and wholesale financial
services firms, and whose objectives include securing an appropriate degree of protection for customers. For more on our key regulators see the Regulatory risk section.

CONDUCT RISK MANAGEMENT

Risk
appetite

We have no appetite to make decisions that lead to poor outcomes for our customers, clients or the market. Our conduct risk appetite is approved at
Board level and cascaded to all business units via the conduct risk framework and associated policies.

Risk measurement

To measure conduct risk we have established metrics which are regularly reviewed by Executive and Board Committees.

For example, each business unit (such as those within our Retail Banking segment responsible for retail mortgages, banking, credit cards, loans, insurance, savings and
wealth products; as well as those within our Commercial Banking, Global Corporate Banking and Corporate Centre business segments) has a tailored set of key risk indicators (KRIs) according to the conduct risks and policy principles applicable to
that business unit. These are monitored through business level dashboards, which cover the end-to-end view of conduct risks (from product, sales, after-sale and servicing) for that business unit in accordance with the conduct risk appetite.

The dashboards take into account a broad range of metrics across common areas such as mystery shopping, quality assurance and complaints. For Global Corporate Banking
they also include metrics around confidential information, potential conflicts of interest, culture and behaviour.

The second line Conduct and Compliance team
undertakes assurance work, which includes qualitative assessments of each business units conduct risks.





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Annual Report 2016

Risk review









Risk mitigation

The conduct risk framework and
associated policies inform all staff of the guiding principles, minimum standards, roles and responsibilities and governance for conduct risk, such as:



|                                     |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|------------------------------------ |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                     | 
|Policies                             |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|                                     | 
|Product approval                     |  | Our product approval process has been established to minimise
exposure to conduct, legal, regulatory or reputational risks in the design, marketing, sales and service of new products and services. All products and services are assessed within a formal framework to make sure they are within our risk appetite
and any agreed metrics, processes and controls are in place.                                                                                                                                                                                                                                                                                                                                              
|                                     | 
|Suitable advice                      |  | Guidance is provided to advisers and staff on the key
principles, minimum requirements and ethical behaviours they must follow when they give advice or conduct a non-advised sale. This ensures our customers are sufficiently informed when they make a buying decision. The main products covered are
mortgages, investments, savings and protection.                                                                                                                                                                                                                                                                                                                                                                       
|                                     | 
|Training and competence              |  | In line with regulatory expectations all staff are trained
and required to maintain an appropriate standard of competence to ensure customers achieve fair outcomes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                     | 
|Treating vulnerable customers fairly |  | Our purpose is to help people and businesses prosper and we always aim to treat customers
fairly. Certain customers may be impacted financially or personally as a result of their circumstances. Our guidelines give our business areas a clear and consistent understanding of what could constitute vulnerability and the types of customers
that may need additional support. The guidelines also help prevent those customers from entering financial difficulty or any other financial loss. We work with key charities and specialist third parties to develop our understanding of vulnerability.
We also consider vulnerability in our product approval process, and have mandatory training on it for all our people.

The conduct risk framework and associated policies are supported by a number of tools that allow us to identify and assess any new and
emerging conduct risks. These include:



|                                         |  |                                                                                                                                                                                                                                                                                                                                                          
|---------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                         | 
|Key tools                                |  | Description                                                                                                                                                                                                                                                                                                                                              
|                                         | 
|Strategy and business planning           |  | Our Strategy and Corporate Development team help ensure
alignment with overall corporate strategy, financial plans, risk appetite and operational capabilities via the annual strategy setting process. Business unit plans are derived from the overall corporate strategy and contain an assessment of conduct
risk alongside our other key risk types.
|                                         | 
|Sales quality assurance                  |  | Sales are subject to internal quality assurance and, as
appropriate, independent monitoring to ensure the quality of sales and practices.                                                                                                                                                                                                                
|                                         | 
|Operational risk and control assessments |  | Operational risk and control assessments are carried out by
business and business support units to provide a consolidated risk profile view across all business areas. These are completed through a centralised risk management tool to evaluate residual risk exposures and manage them across all areas.                                              
|                                         | 
|Scenario testing and horizon scanning    |  | Conduct risk is considered within our scenario testing which
examines possible root causes and assumptions determining both the likelihood and materiality of impact, along with identification actions to enhance controls where required.                                                                                                              
|                                         | 
|Conduct risk reporting                   |  | Dashboards provide an end-to-end view of conduct risks (from
product, sales and post-sales and servicing) across all business lines to allow management to apply a lens to the management of conduct risk and understand if it is in line with risk tolerance.                                                                                           
|                                         | 
|Compliance monitoring                    |  | We carry out an annual assurance programme for conduct risk including mystery shopping, branch
oversight and thematic reviews.                                                                                                                                                                                                                           

Risk monitoring and reporting

Risk and control forums have been established to support senior management in managing risk and control in the business units they are responsible for.

Reporting includes commentary on trends or root cause issues, where identified, to enable effective management action. The data reported to senior management contains
essential information enabling a clear understanding of current and potential emerging conduct risks and issues. Such information is discussed at risk and control forums with upward escalation to Executive, Executive Risk Control and Board
Committees.





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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





CONDUCT RISK REVIEW

2016 compared to 2015

In 2016, we continued to enhance the way we report
and monitor conduct risk. This included improvements to how we assess conduct risk in our business decisions, and carried out related initiatives to continue to improve the outcomes for our customers. These improvements included:

| | Appointing the CLRO with direct responsibility for control and oversight of legal, conduct, regulatory and financial crime risk
|- | -------------------------------------------------------------------------------------------------------------------------------

| | Continuing to enhance our framework and guidance for how we support vulnerable customers including ageing customers as described in more detail below
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------

| | Making further improvements to our employee reward schemes to further align them to our strategy for Simple, Personal and Fair
|- | ------------------------------------------------------------------------------------------------------------------------------

| | Enhancing legacy systems and policies and developing better management information across branch, telephony and digital channels to improve our customer journeys.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------

We also built on improvements made to our conduct risk framework in Global Corporate Banking, including:

| | Creating a dedicated first line control team enabling the development of a more holistic approach to managing non-financial risks
|- | ---------------------------------------------------------------------------------------------------------------------------------

| | Refreshing the product initiative approval process to ensure robust governance and stakeholder approval arrangements
|- | --------------------------------------------------------------------------------------------------------------------

| | Updating employee performance reviews to include conduct metrics such as, but not limited to, completion of mandatory training and fulfilment of block leave requirements.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------

PPI provisions

The PPI provision amounted to £457m at 31 December
2016. We made an additional £144m provision charge in the year, which included our best estimate of Plevin related claim costs and a £30m charge for a specific portfolio under a past business review. With the FCA consultation expected to
close in the first quarter of 2017, we have assessed the adequacy of our provision and applied the principles published in the August 2016 FCA consultation paper to our current assumptions. We will continue to review our provision levels in respect
of recent claims experience and once the final FCA guidance is published, and it is possible further PPI-related provision adjustments will be required in future years.

Monthly utilisation during the year, excluding the impact of past business review activity, was slightly higher than the 2015 average and in line with our assumptions.

Other conduct provisions

Other conduct provisions amounted to £36m
and relate predominantly to wealth and investment products.

For more on our provision for conduct remediation, including sensitivities, see Note 33 to the
Consolidated Financial Statements. We explain more about these sensitivities in Critical accounting policies and areas of significant management judgement in Note 1 to the Consolidated Financial Statements.



Ageing customersLife expectancy is increasing. A child born in the UK today can expect to live well into their 80s and the number of people
aged over 65 already outnumbers those under 16. These changes mean people can look forward to a longer period of retirement but often age brings a number of new challenges. Changes in cognitive ability, dexterity and other senses are widely
recognised and associated with ageing.  We are committed to working
internally and with the wider industry to recognise and better understand the challenges older people may face. By doing so we aim to provide the right customer experience, products and services to suit people of all ages.
 LOGO

In 2016 we carried out a number of initiatives: 
   We enhanced our training to increase staff awareness of the challenges older people may
face and how best to respond. In our vulnerable customer training we feature a real life case study of a customer with dementia to demonstrate how our behaviours can support people and provide positive outcomes.
   We set up
an internal working party to enable all areas of our business to consider the ageing population as part of our product and service design and development. 
  We are working with external partners and local communities in a number of ways:
   We have a 3 year
partnership with Age UK and we support their Ambitions for Later Life programme to help older people overcome life-changing events. We also developed a fraud and scams awareness pack in collaboration with Age UK.
    Recognising older
people often rely on help from others to manage their finances, we chair an industry working group focused on enhancing third party access. 
In 2017, fingerprint biometrics are due to launch on our mobile app which will avoid the need for people to remember passwords on the
move.  We will continue to work in this area in 2017 recognising
that, more than ever before, we need to consider our older customers and an increasingly ageing population.






Santander UK plc117



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Annual Report 2016

Risk review











Other key risks and areas of focus   Overview(unaudited)  Other key risks
 In this section, we describe how we manage our other key risks and discuss developments in the year.
Our other key risks are:   Strategic
risk: the risk of significant loss or damage arising from strategic decisions that impact the long-term interests of our key stakeholders, or from an inability to adapt to external developments
  Operational risk: the risk of
direct, or indirect, loss due to inadequate or failed internal processes, people and systems, or external events. Our top three key operational risks are: 
    Cyber risk 
    Third party supplier management
     Process and change
management.  All of our top operational risks, and how we mitigate them, are
described in the Operational risk management section below. Many of these have associated technology failure and data risks. 
 Financial crime risk: the risk that our employees, products, services or third parties facilitate money
laundering, financing terrorism, bribery and corruption or evasion of financial sanctions 
 Model risk: the risk of loss arising from decisions mainly based on results of models, due to errors in
their design, application or use  
Reputational risk: the risk of damage to the way our reputation and brand are perceived by the public, clients, government, colleagues, investors, or any other interested party
    Regulatory risk: the risk of loss,
financial or reputational, from failing to comply with applicable codes and regulations.  Areas
of focus In this section, we provide more information on country risk exposures, with a focus on the eurozone. We show balances with other Banco Santander
companies separately.






118Santander UK plc



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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





STRATEGIC RISK(unaudited)

Similar to other risks, strategic
risk can affect the long-term success and value of our business. It can arise from:

| | Having a partial picture of our environment. This can include the economy, new rules and regulations, shifting customer expectations, competitor activity and changes in technology
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Our business model becoming out of date due to material changes in our operating environment
|- | --------------------------------------------------------------------------------------------

| | Misjudging our own capabilities, position in the market, or ability to implement our strategy
|- | ---------------------------------------------------------------------------------------------

| | Pursuing initiatives like acquisitions that might not fit with our business model, or ignoring opportunities that could boost it.
|- | ---------------------------------------------------------------------------------------------------------------------------------



|                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                         
|Strategic risk management
|                          | 
|                         |  | Risk appetite  we have a low to moderate appetite for strategic risk. This limits the risks we take
and the services we are willing to provide, and is aligned to our balanced, customer-centric business model.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|                          | 
|                         |  | Risk measurement  strategic risks are determined
by Board and management decisions about our objectives and direction. Our Board and senior management regularly review key issues we face and potential risks.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                          | 
|                         |  | Risk mitigation  we try to reduce risk by having a clear and consistent strategy. Our strategy takes account of our main stakeholders, sets out our vision and
priorities, and how we achieve progress towards our goal of becoming the best UK bank. Importantly, our strategy is supported by strong values  what we call The Santander Way. It is based on our aim to be Simple, Personal and Fair
in all we do. In 2016, we have continued to embed our culture through a new set of behaviours. These support colleagues in creating an environment in which they can flourish and in turn help us fulfil our aim to be the best bank for our people,
customers, shareholders and communities.
|                          | 
|                          |  | We like to be prepared, so we try to plan well. We have simple and effective planning processes and regularly review our performance, products/services and strategy. Our
planning helps us identify key risks and opportunities. It also helps us use our resources efficiently and find the best way to serve our customers.                                                                                                                                                                                                                                                                                                                                                                         
|                          | 
|                          |  | Customers are at the heart of what we do. So we are
constantly thinking about our customers, what they want from a bank, and the best way we can meet their ever-changing needs. We think this is one of the best ways to be a successful bank and manage strategic risks.                                                                                                                                                                                                                                                                                                                                                                                                                             
|                          | 
|                         |  | Risk monitoring and reporting  we closely track our business environment 
such as changes in the economy, customer expectations, technology, regulatory and government policies. We also look at long-term trends and how they might affect us. We engage stakeholders both inside our business and outside Santander UK
(customers, shareholders, communities) to make sure we capture a wide range of views. Finally, we report a range of indicators to track our performance  these include our KPIs as set out in the Strategic Report.                                                                                                                                                      

2016 compared to 2015

Our business
environment is always changing, and this affects how we do business. In 2016, the key changes were:

| | The relatively stable economic backdrop we saw in the first half of 2016 began to weaken as the year progressed with the outcome of the UK referendum on EU membership in June leading to some short-term market
volatility. This gave way to more stability as markets factored in the changeable macro environment. We are nonetheless entering a period of uncertainty as the UK begins the process of leaving the EU. That said, we are well-placed to manage any
potential uncertainties and deliver our strategy. As part of the global Banco Santander group, we have options available to us. Additionally, we are the only full-service scale challenger, with a track record of having achieved consistent
profitability since 2007, a resilient balance sheet and relentless focus on customers and innovative solutions.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | The post-financial crisis regulatory agenda had led to significant change and with it a relatively high cost of compliance. One notable initiative involves ring-fencing, with major UK banks separating their wholesale
and retail operations. With this requirement due for implementation by 1 January 2019, and in light of the changeable macro environment, our Board concluded that we can better serve our customers with a wide ring-fence structure,
rather than the narrow ring-fence originally envisaged. Under this model Santander UK plc, the ring-fenced bank, will serve our retail, commercial and corporate customers. This also maintains longer term flexibility and leads to lower
overall programme implementation cost with the migration now impacting fewer customers. We intend to complete the implementation well in advance of the deadline, with implementation subject to regulatory and others approvals.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | In August 2016, the Competition and Market Authority (CMA) published its final report in connection with its retail banking market investigation. While the CMAs package of remedies is a step in the right direction
to promote competition and tackle incumbency advantages, as a full-service scale challenger, we welcome steps to drive greater competition, more open business models and choice for customers, and stand ready to innovate and evolve our products and
services to challenge the status quo by becoming the best bank for our customers.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | We have continued to see marked shifts in customer expectations  adopting new technologies and moving to digital channels. At the same time, the scale and pace of technological change has intensified. We are
embracing these changes that offer real benefits to our customers. For example, we have introduced end-to-end online processes for all key products including mortgages and investments, alongside other innovations such as advanced data analytics and
our highly-rated mobile banking apps.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Competitive pressures have increased both from established players and new entrants. Our business-model and strategy are customer-focused, adaptable and innovative, so we believe we can thrive in this environment.
Indeed we are embracing these opportunities as shown by our partnerships including through our FinTech fund, Santander InnoVentures, which has received another $100m funding from Banco Santander (adding to the original $100m investment). This fund
invests in FinTech companies with proven expertise in their space, leveraging technology that we can benefit from and helping us challenge the market by adopting these new technologies. For example, our investment in Kabbage  an online SME
lender  enables us to offer our small business customers a simple and improved lending experience whilst decreasing risk.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Overall, we embrace change and continue to make good progress towards our strategic goals. For more on this, see the Strategic Report section.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------





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Annual Report 2016

Risk review









OPERATIONAL RISK(unaudited)

OUR KEY OPERATIONAL RISKS

Operational risk is inherent in our business. As a result, we aim to manage it down to as low a level as possible, rather than eliminate it entirely.
Operational risk events can have a financial impact and can also affect our business objectives, customer service and regulatory obligations. Operational risk events can include product misselling, fraud, process failures, system downtime and damage
to assets.

Our top three key operational risks are:



|                                               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|---------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                               | 
|Key risks                                      |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                               | 
|Cyber risk                                     |  | The use of technology and the internet have changed the way
we live and work. It has allowed us to develop and improve the way we deal with our customers. It is critically important that we give our customers a secure environment in which to deal with us. Failure to protect the information assets of the bank
and its customers against theft, damage or destruction from cyber attacks could result in both damage to our reputation and direct financial losses. This applies not only to our own systems but also those of our third party providers and
counterparties in the market.                     
|                                               | 
|Outsourced and third party supplier management |  | We have arrangements with other Banco Santander companies
(including the provision of IT infrastructure, software development, and banking operations) and external outsourced service providers. The failure of a supplier may cause operational disruption, breach of regulation, negative customer impact,
financial loss or reputational damage.                                                                                                                                                                                                                                                                  
|                                               | 
|Process and change management                  |  | A key part of our business strategy is to develop and deliver new banking channels and
products. These include mobile banking and third party payment products. The scale and pace of our plans increases our operational risk. 
We also face a large number of regulatory and legal changes, impacting all areas of our business. There is more on this in the Regulatory risk section. Our
business units are reporting operational issues due to the volume and complexity of these changes. These changes could have financial, customer, reputational and regulatory impacts if we do not manage them properly.

OPERATIONAL RISK MANAGEMENT

Risk appetite

Our operational risk appetite is set at a
Santander UK level and at a local business unit level. It is expressed through both quantitative and qualitative measures approved by the Board. These include Santander UKs operational risk loss appetite and key indicators. They consider each
of the seven CRD IV loss event types: internal fraud, external fraud, employment practices and workplace safety, clients, products, and business practices, damage to physical assets, business disruption and systems failures, and execution, delivery,
and process management.

Risk measurement and mitigation

The key components of the operational risk toolset we use to measure and mitigate risk are:



|                                         |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|---------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                         | 
|Operational risk toolset                 |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                         | 
|Operational risk and control assessments |  | Our business units identify and assess their operational
risks to ensure they are effectively managed and controlled within our operational risk appetite. They also ensure that we prioritise any actions needed. Every area identifies their risks and assesses their controls for adequacy, and formulates a
plan to address any deficiencies.                                                                                                                                                                                                                                                                                                                                               
|                                         | 
|Risk scenario analysis                   |  | This is carried out across all of our business units and
involves a top down assessment of our most significant operational risks. Each business unit has a set of scenarios that it reviews and refreshes each year. The analysis gives us insight into rare but high impact events. It also allows us to better
understand the potential impacts and to remediate issues.                                                                                                                                                                                                                                                                                                                     
|                                         | 
|Key indicators                           |  | Together with their related tolerance levels, key indicators
provide management with an objective view of the degree of risk or the strength of a particular control at any point in time, or provide a trend over a period of time. They also give us early warning of potential risk exposures. The most common
types of key indicators we use are key risk indicators, which highlight the degree of risk, and key control indicators, which show the strength and effectiveness of controls. 
In addition to Santander UK level metrics, we also define our operational risk appetite at the business unit level through the use of business unit level key indicators
and tolerance levels.





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| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks







|                         |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|------------------------ |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                         | 
|Operational risk toolset |  | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                         | 
|Operational risk losses  |  | Our operational risk loss appetite determines the level of
total operational risk loss (expected and unexpected) in any given year (on a 12 months rolling basis) that we consider to be acceptable.                                                                                                                                                                                                                                                                                                  
|                         | 
|Incident management      |  | Operational incidents occur when our controls have not
operated as intended leading to customer impact, financial loss, regulatory impacts and/or damage to reputation. We have processes to capture and analyse loss events. We use data from these processes to identify and correct control weaknesses. We
also use root cause analysis to identify emerging themes, prevent or reduce the impacts of recurrence and to support risk and control assessments, scenario analysis and risk reporting.
|                         | 
|Risk based insurance     |  | Where appropriate, we use insurance products along with existing risk mitigation measures.                                                                                                                                                                                                                                                                                                                                                                                                            

For our key operational risks we also mitigate risk in the following ways:



|                                               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|---------------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                               | 
|Key risks                                      |  | Risk mitigation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                               | 
|Cyber risk                                     |  | We operate a layered defence approach to cyber risk, focused
on identifying, detecting, preventing, responding to and recovering from cyber attack. We continually review the effectiveness of our controls against globally recognised security standards including the use of maturity assessments and both internal
and external threat analysis. Our comprehensive approach to validation of our controls includes tests designed to replicate real-world cyber attacks, findings of which are incorporated into our ongoing plan of improvements.
 For more details on the developments on this, see Cyber security on the next page.
|                                               | 
|Outsourced and third party supplier management |  | We operate a supplier selection process to ensure that those
with whom we intend to conduct business meet our risk and control standards. We also monitor and manage our ongoing supplier relationships to ensure our standards continue to be met. We manage our supplier relationships to minimise the possibility
of disruption to our business as a result of the failure of a supplier.                                                                                                                                                                                                                                                
|                                               | 
|Process and change management                  |  | Our operational risk exposure is increased where we engage in new activities, develop new
products, enter unfamiliar markets or implement new business processes or technology systems. As a result, we conduct operational risk assessments for material change programmes and new product developments before they receive approval to
proceed.                                                                                                                                                                                                                                                                                           

Risk monitoring and reporting

Reporting is an integral part of how we manage risk. It ensures we identify, escalate and manage issues on a timely basis. We can identify exposures through operational
risk and control assessments, risk scenario analysis, key indicators and incidents. We report exposures for each business unit through monthly risk and control reports. These include details on risk exposures and how we plan to mitigate them. We
prioritise events that have a material impact on our finances, reputation, or customers by reporting them to key executives.

We have an overarching
crisis management framework in place encompassing all levels, including the Board, senior management and business and support functions. This framework sets out the processes for managing a crisis and major incidents and is tested at least annually.
Should an event occur, business continuity plans are in place to recover the services as quickly as possible. These are aligned with our key customer journeys and delivery of critical IT services.

We apply the standardised approach for Pillar 1 operational risk capital needs. We use an internal model aligned to the CRD IV advanced measurement approach to assess
Pillar 2 capital needs. We also use it to model operational risk losses we might incur under stressed conditions.





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Annual Report 2016

Risk review









OPERATIONAL RISK REVIEW

Operational risk event losses

The table below shows our
operational losses in 2016 and 2015 for reportable events with an impact greater than £10,000, split by CRD IV loss event type categories. Whilst reported here, we manage some of these risks in our Risk Framework in other risk types, including
conduct, regulatory and financial crime risk.



|                                            |  |           |     |  |            |  |     |      |  |  |           |  |  |            |     |  |  |  |     | 
|------------------------------------------- |  | --------- | --- |  | ---------- |  | --- | ---- |  |  | --------- |  |  | ---------- | --- |  |  |  | --- | 
|                                            |  | 2016      |     |  |            |  |     | 2015 | 
|                                            |  | Value (%) |     |  | Volume (%) |  |     |      |  |  | Value (%) |  |  | Volume (%) |    
|Internal fraud                              |  |           |    |  |            |  | 2   |      |  |  |           |  |  |            |    |  |  |  | 2   | 
|External fraud                              |  |           | 4   |  |            |  | 57  |      |  |  |           |  |  |            | 1   |  |  |  | 62  | 
|Employment practices and workplace safety   |  |           |    |  |            |  |    |      |  |  |           |  |  |            |    |  |  |  |    | 
|Clients, products, and business practices   |  |           | 67  |  |            |  | 3   |      |  |  |           |  |  |            | 87  |  |  |  | 4   | 
|Damage to physical assets                   |  |           |    |  |            |  |    |      |  |  |           |  |  |            |    |  |  |  | 2   | 
|Business disruption and system failures     |  |           |    |  |            |  |    |      |  |  |           |  |  |            |    |  |  |  |    | 
|Execution, delivery, and process management |  |           | 29  |  |            |  | 38  |      |  |  |           |  |  |            | 12  |  |  |  | 30  | 
|                                            |  |           | 100 |  |            |  | 100 |      |  |  |           |  |  |            | 100 |  |  |  | 100 | 

2016 compared to 2015

Operational
losses

In 2016 operational losses for reportable events with an impact greater than £10,000 totalled £227m (2015: £582m). The majority of these
losses by value were in the Clients, products, and business practices category. These mainly represented conduct provision charges relating to past sales of PPI products. For more on PPI, see the Conduct risk section and Note
33 to the Consolidated Financial Statements. Losses relating to Execution, delivery, and process management reflect historic systems functionality and process issues. Consistent with industry experience, we continued to see a high volume
of low value events in the External fraud category which primarily related to online payment fraud.

Operational Risk Transformation Programme

Further investment was made in 2016 to complete the implementation phase of the Operational Risk Transformation Programme. A final year of investment is required
in 2017 to embed the programme into business as usual and demonstrate effective operational risk management to the regulators. We also migrated our internal controls records onto the new group Operational Risk Management system.

Cyber security

In 2016, in common with other large UK financial institutions,
we continued to be subject to cyber attack. This included an incident that resulted in a temporary disruption to the service offered via our digital channels, caused by a denial of service attack and launched by an unknown external third party. We
continued to improve our systems, processes, controls and staff training to reduce cyber risk and enhance our data security. For more on this see Cyber security below. In addition, during the past four years we have been building world
class data centres that will provide our bank with a solid foundation to enable its digital transformation. This will provide some significant benefits to support future growth, including improved resilience and security and reduced legacy issues.
For more on this see the case study on new IT infrastructure in the Strategic Report section.



Cyber
securityThe cyber threat landscape continued to evolve rapidly in 2016. As with many financial organisations, we continued to be a target
for cyber attacks:  
  Distributed Denial of Service attacks continued to be prevalent, targeting the online services of many organisations including our own. We continually review the effectiveness of our defences to minimise the impact of these attacks. The
increase in domestic Internet connected devices increases the potential for large scale attacks of this type. 
   The use of sophisticated malware targeting online banking remains common and continues
to evolve rapidly. Successful action by law enforcement has disrupted, and in some cases dismantled, the criminal networks behind these attacks. We have deployed controls to protect our own systems against malware attacks and also to protect our
customers through detection and prevention mechanisms. 
   Phishing attacks, particularly through fraudulent emails sent to consumers, continued to
be prevalent and increasingly other methods of communication, such as text messages, are being used by attackers. We have deployed controls to combat fraudulent emails that are designed to masquerade as originating from our organisation.
 In 2016, we further improved our cyber defences through the implementation of
tools, revised processes and additional staff. Our Cyber Safe security awareness programme delivered interactive training across the business that helped staff to identify suspicious activity. We also ran an annual scam awareness campaign to educate
customers and the general public on the most common types of scams, with tips to stay safe.

An effective defence against cyber attack is not something that can or should be achieved in isolation. We work with financial
sector organisations and law enforcement to collectively improve defences. We are a founder member of the Cyber Defence Alliance, a UK-based not for profit organisation which aims to collaboratively prepare for and respond to cyber attacks. The
recently established UK National Cyber Security Centre is also a welcome development.  LOGO






122Santander UK plc



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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





FINANCIAL CRIME RISK(unaudited)

OUR KEY
FINANCIAL CRIME RISKS

We are committed to the strongest possible response to financial crime risk. We have always recognised that failure in this area could
impact us financially, reputationally and operationally, as well as negatively affecting our customers and wider society. Geopolitical factors and new criminal offending methods can quickly alter the risks we face. In this context, we now consider
financial crime risk to be a top risk. Strengthened systems and controls, an updated policy and governance framework, improved training and new intelligence and risk assessment capabilities, as well as our partnership with UK authorities, are
supporting us to detect and prevent financial crime.

Our key financial crime risks are:



|                       |  |                                                                                                             
|---------------------- |  | ------------------------------------------------------------------------------------------------------------
|                       | 
|Key risks              |  | Description                                                                                                 
|                       | 
|Money laundering       |  | We are used by criminals to transform the proceeds of
crime into seemingly legitimate money or other assets.
|                       | 
|Terrorist financing    |  | We are used by terrorists to deposit, distribute or
collect funds that are used to fund their activity.     
|                       | 
|Sanctions              |  | We do not identify payments, customers or entities that
are subject to economic or international sanctions. 
|                       | 
|Bribery and corruption |  | We fail to put in place effective controls to prevent or detect bribery and corruption.                     

FINANCIAL CRIME RISK MANAGEMENT

Risk appetite

We recognise the critical
importance of ensuring we are not used for the purposes of financial crime. We have controls in place to manage this risk as we have a minimal tolerance for residual financial crime risk. We have a zero tolerance for non-compliance with sanctions
programs and the restrictions imposed through such instruments. We cascade our risk appetite and policies throughout the business.

Risk
measurement

We use a number of different tools to measure our exposure to financial crime risk:

| | We conduct risk assessments of customers, sectors, jurisdictions and business units to assess our risk profile and to ensure we comply with all applicable sanctions regimes
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | We use monthly key risk indicators to measure and report financial crime risk to senior management
|- | --------------------------------------------------------------------------------------------------

| | Our Financial Intelligence Unit conducts assessments of particular types of threat, including drawing on information provided by law enforcement and public authorities.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Risk mitigation

Our financial crime function is focused
on predicting, detecting, preventing and, where possible, disrupting financial crime.

We require all our business units to manage their activities in line with the
principles and guidance in our financial crime risk framework. These requirements are set out in our anti-money laundering (AML), counter terrorist financing, sanctions, and anti-bribery and corruption policies and standards.

In line with UK and international laws and standards, we adopt a risk-based approach to financial crime risk mitigation. Key elements of this approach include:

| | Risk assessments we assess customer, product, business, sector and geographic risk to target efforts to mitigate financial crime most effectively
|- | --------------------------------------------------------------------------------------------------------------------------------------------------

| | Customer due diligence  we seek to understand customers activities and banking requirements and, in order to minimise the risk that we are used for money laundering or terrorist financing, we conduct
regular reviews of our higher-risk customer relationships to ensure any new financial crime considerations are identified and addressed.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Risk monitoring and reporting

We monitor key financial crime developments and enhance our controls to comply with new or
amended laws, regulations or industry guidance. We produce and report financial crime risk data by business unit which covers all aspects of the business life cycle. Each month we report an analysis of the financial crime key risk indicators to the
Executive Risk Control Committee together with a directional indication of the risk profile and any significant deterioration of the metrics.





Santander UK plc123



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##### Table of Contents



Annual Report 2016

Risk review









FINANCIAL CRIME RISK REVIEW

2016 compared to 2015

In 2016 we continued to improve the effectiveness of our approach to tackling financial crime.

We made a number of enhancements to our systems and controls. Included in these, we:

| | Improved our internal data. As part of this, we introduced key indicators to track performance against our financial crime risk
|- | -------------------------------------------------------------------------------------------------------------------------------

| | Further automated our Suspicious Activity Reporting (SAR) process. This built on positive feedback from the National Crime Agency on the quality of our SAR submissions and improved our ability to provide high quality
data.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We continued to review our financial crime policy and standards. We:

| | Enhanced our financial crime compliance operating model. We put in place dedicated first line governance and operations, and hired skilled staff to support a more intelligence led second line approach
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Updated our policy and standards to reflect changes to laws and regulations, including the Fourth EU Money Laundering Directive and EU Wire Transfer Regulation 2
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Continued to develop the training we provide to our staff. This included a Financial Crime Awareness Week in July 2016 that allowed over 200 of our staff across the country to receive briefings from external experts
from government, law firms and law enforcement.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We enhanced our partnerships with public authorities. We:

| | Increased our intelligence and risk assessment capabilities including further investment in our Financial Intelligence Unit, improved country risk assessment and greater partnership with public authorities such as
through the Joint Money Laundering Intelligence Task Force
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Increased our external engagement with government and at industry level, to ensure we have the most up to date understanding of key financial crime compliance developments and help shape public policy making.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We also strengthened our reporting to senior management. This included enhancing our risk assessment, screening and transaction monitoring, delivered
through our Financial Crime Transformation Program.





Partnerships with public authoritiesWe are an active participant in the Joint Money Laundering Intelligence Task Force (JMLIT), which supports public-private
collaboration to tackle financial crime. The JMLIT was set up in May 2016, and has been developed with partners in government, the British Bankers Association, law enforcement and over 20 major UK and international banks under the leadership of the
Financial Sector Forum.  The JMLIT analysed information and used
public and private sector expertise to better understand the scale of money laundering and the methods used by criminals to exploit the UKs financial system. It also analysed how terrorists use financial systems to finance attacks. It
identified and implemented actions to address these.  LOGO

We have derived real benefits from participating in all levels of the JMLIT, including the following:
    Through the legal
framework provided by this partnership, we were able to provide information to the JMLIT that supported law enforcement actions to tackle a serious organised crime group involved in human trafficking and money laundering.
    Alerts and other
information provided to us by the JMLIT have supported a range of financial crime prevention and detection activities. We have used information from the JMLIT to enhance our intelligence and analysis activities, as well as to inform our financial
crime training efforts. 
   The National Crime Agency, the Police and the Home Office also participated in our first
Santander UK Financial Crime Awareness Week in July 2016. This allowed over 250 of our colleagues in five locations to receive briefings on new financial crime developments from external experts. This type of up to date information will support our
colleagues to understand new financial crime offending techniques and therefore be better able to spot and stop financial criminals seeking to access banking services. 
The involvement in the JMLIT is an example of our commitment to strong partnerships with the public sector to tackle financial
crime.






124Santander UK plc



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| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





MODEL RISK(unaudited)

Our key model risks arise from
potential flaws in our modelling techniques, or the incorrect use of a model. They include risks arising from model data, systems, development, performance and governance.



|                      |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|--------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                     
|Model risk management
|                      | 
|                     |  | Risk appetite  our appetite for model risk is
expressed through the risk assessments of our most material risk models. This is agreed by the Board at least annually.                                                                                                                                                                                                                                                                               
|                      | 
|                     |  | Risk measurement  we consider both the
percentage of models that have been independently assessed, as well the outcome of those reviews, in our measurement of model risk.                                                                                                                                                                                                                                                                          
|                      | 
|                     |  | Risk mitigation  we mitigate model risk
through controls over the use of models throughout their lifecycle. We maintain a central model inventory that includes data on owners, uses and key dates. We assess how important each model is to our business. Recommendations arising from
independent reviews are tracked through to resolution. We also maintain a single approval body for new model developments, updates and performance tracking.
|                      | 
|                     |  | Risk monitoring and reporting we report model risks and issues using model
risk management and control forums. We escalate issues to the Executive Risk Control Committee when necessary, or if our risk appetite is breached.                                                                                                                                                                                                                      

2016 compared to 2015

We continue to
identify new models used across the business. We determine their importance in order to compare across the model landscape, and focus management and control, as effectively as possible. We have further enhanced our model risk framework and policy,
continuing its extension across the business, and providing more clarity around accountabilities of model owners, developers and reviewers. We continue to independently review the most material models. To improve our controls further, we have
established a model risk control forum, reporting directly to the Executive Risk Control Committee.

REPUTATIONAL
RISK(unaudited)

Our key
reputational risks arise from failures in corporate governance or management, failures in treating customers fairly, the actual or perceived way we do business and the sectors and countries we do business with, how our clients and those who
represent us conduct themselves, and how business is conducted in our industry. External factors may also present a reputational risk to us, including the macro environment and performance of the sector. Sustained damage to our reputation could have
a material impact on our ability to operate fully. In turn, this could affect our financial performance and prospects. Reputational risk is not static; todays decisions may be judged by different standards tomorrow. We build this into our risk
culture, evaluation and sanction procedures.



|                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|---------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                            
|Reputational risk management
|                             | 
|                            |  | Risk appetite  we have a low appetite for
reputational risk, expressed in terms of the risk measures set out below, and which is agreed by the Board at least annually.                                                                                                                                                                                                                                                                                                                                                                                   
|                             | 
|                            |  | Risk measurement  we assess our exposure to
reputational risk daily. We base this on analysis of social media, print, and broadcast media as well as political and market commentators. Our analysis considers our activities and those of our UK peers and is designed to help us identify large
reputational events, or a prolonged deterioration in our reputation. We measure the perception of Santander UK by key stakeholder groups at least annually, using third party research. This includes employees, media, politicians and customer
groups.
|                             | 
|                            |  | Risk mitigation  all our business units consider
reputational risk as part of their operational risk and control assessments. We also consider reputational risk as part of our new product assessments. Our Corporate Affairs and Marketing Team, supported by our legal, compliance and risk teams, help
our business units to mitigate reputational risk, and agree action plans as required, as part of their overall responsibility to monitor, build and protect our reputation and brand.                                                          
|                             | 
|                            |  | Risk monitoring and reporting  we monitor and report key reputational risks and
issues on a timely basis, escalating them to Executive Risk Control Committee, and Board Risk Committee as necessary. Our Corporate Affairs and Marketing Team also reports regularly to our Executive Committee on Corporate Social Responsibility,
Sustainability and Public Affairs policies. They do this from an environment, community and sector point of view.                                                                                                    

2016 compared to 2015

In 2016, we
further strengthened governance and culture across the business. We have continued to:

| | Work towards our stated corporate goals for 2018. This included improving ways of working, simplifying complex processes as well as developing technology to improve our customers experience
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Embed the behaviours that support our purpose, aim and values, most notably by including them as part of our performance appraisals. From the mid-year 2016 behaviours will carry equal weighting with achievements in all
employees performance management
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Enhance our reputational risk appetite and agreed escalation processes.
|- | -----------------------------------------------------------------------

In addition we continued to embed Simple,
Personal and Fair across the business through the governance of The Santander Way committee. This included our Executive Committee conversations initiative and a series of events that gave employees the opportunity to ask questions about topics that
are on their mind.

We worked closely with the business on communication plans for key events such as the UK Referendum on EU membership and Banking Reform. We also
promoted the community and wider society support that Santander UK provides through its Corporate Social Responsibility work, and the Santander Cycles Schemes in London and Milton Keynes.





Santander UK plc125



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##### Table of Contents



Annual Report 2016

Risk review









REGULATORY RISK(unaudited)

Our key regulatory risks arise mainly from failing to adhere with relevant laws, regulations and
codes which could have serious financial and reputational consequences. We may also be adversely impacted by changes and associated uncertainty relating to UK and international regulatory requirements.

We categorise regulatory risk into financial and non-financial risk as aligned to our primary regulators who are the:

| | PRA, which is responsible for the prudential regulation and supervision, and whose general objective is to promote the safety and soundness of the firms it supervises; and
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | FCA, which focuses on the regulation of conduct by both retail and wholesale financial services firms, and whose objectives include securing an appropriate degree of protection for customers.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

As well as being subject to UK regulation, as part of the Banco Santander group, we are impacted indirectly through regulation by the Banco de España (the Bank of
Spain) and, at a corporate level, by the ECB following the introduction of the Single Supervisory Mechanism in November 2014. In addition, our business falls within the scope of US regulation, including the Dodd-Frank Wall Street Reform and Consumer
Protection Act, which places certain restrictions on our activities both in the UK and the US. We are also required to adhere to the rules and guidance of other regulators and voluntary code schemes which operate in the UK.

We aim to comply with and exceed all regulatory requirements. Due to the close links between regulatory risk and the operational and conduct risk frameworks, the
identification, assessment, management and reporting tools for these risks also apply where such exposures and risks have a regulatory risk impact.

2016
compared to 2015

A consistent theme in recent years has been the rate and scope of the change agenda, across both regulatory change and politically driven
initiatives. In common with much of the financial services industry, we continue to experience significant levels of regulatory scrutiny. Over the course of the year this included supervisory reviews, meetings and requests for information across
business lines and customer sectors. We have also seen an increased presence of the Competition Markets Authority in relation to the retail banking market investigation.

We carried out a number of regulatory-driven activities in 2016 in response to the evolving regulatory environment. We:

| | Made changes to comply with the new requirements of the Senior Managers Regime which came into force on 7 March 2016
|- | --------------------------------------------------------------------------------------------------------------------

| | Enhanced the whistleblowing framework in line with the new whistleblowing rules which came into effect on 7 September 2016
|- | --------------------------------------------------------------------------------------------------------------------------

| | Continued activities to ensure compliance with future regulatory regime and rule changes. These included Banking Reform and the Markets in Financial Instruments Directive II.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





126Santander UK plc



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##### Table of Contents

| |  |            |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | ---------- |  | ----------- |  | ----------- |  | -------------- |  | ------------ |  | ------------ |  | ------------ |  | ---------------
| |  |            |  |             |  |             |  |               
| |  | Risk       |  |             |  |             |  |                |  |              |  |              |  |              |  |                
| |  | governance |  | Credit risk |  | Market risk |  | Liquidity risk |  | Capital risk |  | Pension risk |  | Conduct risk |  | Other key risks





COUNTRY RISK EXPOSURES

We manage our country risk exposure under our global limits framework. Within this framework, we set our Risk Appetite for each country, taking into
account factors that may affect its risk profile. These can include political events, macroeconomics and the nature of the risk. We actively manage exposures if we think we need to. We consider Banco Santander related risk separately.

The tables below show our total exposures, which are the total of balance sheet and off-balance sheet values. We calculate balance sheet values in accordance with IFRS
(i.e. after netting allowed under IAS 32) except for credit provisions which we add back. Off-balance sheet values are undrawn facilities and letters of credit. We classify location by country of risk  the country where each client has its
main business or assets. That is unless there is a full risk transfer guarantee in place, in which case we use the guarantors country of domicile. If a client has operations in many countries, we use their country of incorporation. The tables
below exclude balances with other Banco Santander companies. We show them separately in the Balances with other Banco Santander companies section.



|                                  |  |             |      |     |            |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          |  |  |      |  |  |  |       | 
|--------------------------------- |  | ----------- | ---- | --- | ---------- |  | --- | ---------------------- |  |  | ----- |  |  | ------ | ---- |  | --------- |  | ----- | -------- |  |  | ---- |  |  |  | ----- | 
|                                  |  |             |      |     |            |  |     | Financial institutions |  |  |       |  |  |        |      |  |           | 
|                                  |  | Governments |      |     | Government |  |     | Banks(1)               |  |  | Other |  |  | Retail |      |  | Corporate |  |       | Total(2) | 
|                                  |  |             |      |     | guaranteed |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          | 
|                                  |  | £bn         |      |     | £bn        |  |     | £bn                    |  |  | £bn   |  |  | £bn    |      |  | £bn       |  |       | £bn      | 
|2016                              |  |             |      |     |            |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          |  |  |      |  |  |  |       | 
|Eurozone countries:               |  |             |      |     |            |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          |  |  |      |  |  |  |       | 
|Italy                             |  |             | 1.0  |     |            |  |    |                        |  |  |      |  |  |        | 0.1  |  |           |  |      |          |  |  | 0.2  |  |  |  | 1.3   | 
|Ireland                           |  |             |     |     |            |  |    |                        |  |  | 0.5   |  |  |        | 0.4  |  |           |  |      |          |  |  | 0.5  |  |  |  | 1.4   | 
|Spain (excluding Banco Santander) |  |             |     |     |            |  |    |                        |  |  | 0.3   |  |  |        | 0.1  |  |           |  |      |          |  |  | 0.2  |  |  |  | 0.6   | 
|Portugal                          |  |             |     |     |            |  |    |                        |  |  | 0.1   |  |  |        |     |  |           |  |      |          |  |  |     |  |  |  | 0.1   | 
|Luxembourg                        |  |             |     |     |            |  |    |                        |  |  |      |  |  |        | 2.3  |  |           |  |      |          |  |  | 0.3  |  |  |  | 2.6   | 
|France                            |  |             | 0.1  |     |            |  | 0.3 |                        |  |  | 1.8   |  |  |        | 0.2  |  |           |  |      |          |  |  | 0.1  |  |  |  | 2.5   | 
|Germany                           |  |             |     |     |            |  |    |                        |  |  | 2.5   |  |  |        |     |  |           |  |      |          |  |  |     |  |  |  | 2.5   | 
|Other(3)                          |  |             | 0.3  |     |            |  |    |                        |  |  | 1.1   |  |  |        | 0.3  |  |           |  |      |          |  |  | 1.1  |  |  |  | 2.8   | 
|                                  |  |             | 1.4  |     |            |  | 0.3 |                        |  |  | 6.3   |  |  |        | 3.4  |  |           |  |      |          |  |  | 2.4  |  |  |  | 13.8  | 
|All other countries:              |  |             |      |     |            |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          |  |  |      |  |  |  |       | 
|UK                                |  |             | 33.6 |     |            |  | 0.4 |                        |  |  | 12.0  |  |  |        | 13.5 |  |           |  | 189.1 |          |  |  | 41.3 |  |  |  | 289.9 | 
|US                                |  |             | 4.8  |     |            |  | 0.2 |                        |  |  | 10.6  |  |  |        | 2.5  |  |           |  |      |          |  |  | 0.1  |  |  |  | 18.2  | 
|Japan(4)                          |  |             | 2.8  |     |            |  |    |                        |  |  | 3.2   |  |  |        | 0.1  |  |           |  |      |          |  |  | 1.4  |  |  |  | 7.5   | 
|Switzerland                       |  |             | 0.2  |     |            |  |    |                        |  |  | 0.1   |  |  |        |     |  |           |  |      |          |  |  | 0.2  |  |  |  | 0.5   | 
|Denmark                           |  |             |     |     |            |  |    |                        |  |  | 0.1   |  |  |        |     |  |           |  |      |          |  |  | 0.4  |  |  |  | 0.5   | 
|Russia                            |  |             |     |     |            |  |    |                        |  |  |      |  |  |        | 0.1  |  |           |  |      |          |  |  |     |  |  |  | 0.1   | 
|Other                             |  |             | 0.1  |     |            |  |    |                        |  |  | 2.6   |  |  |        | 0.6  |  |           |  |      |          |  |  | 2.3  |  |  |  | 5.6   | 
|                                  |  |             | 41.5 |     |            |  | 0.6 |                        |  |  | 28.6  |  |  |        | 16.8 |  |           |  | 189.1 |          |  |  | 45.7 |  |  |  | 322.3 | 
|Total                             |  |             | 42.9 |     |            |  | 0.9 |                        |  |  | 34.9  |  |  |        | 20.2 |  |           |  | 189.1 |          |  |  | 48.1 |  |  |  | 336.1 | 
|                                  |  |             |      |     |            |  |    
|2015                              |  |             |      |     |            |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          |  |  |      |  |  |  |       | 
|Eurozone countries:               |  |             |      |     |            |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          |  |  |      |  |  |  |       | 
|Italy                             |  |             | 0.8  |     |            |  |    |                        |  |  | 0.1   |  |  |        |     |  |           |  |      |          |  |  | 0.1  |  |  |  | 1.0   | 
|Ireland                           |  |             |     |     |            |  |    |                        |  |  |      |  |  |        | 0.1  |  |           |  |      |          |  |  | 0.6  |  |  |  | 0.7   | 
|Spain (excluding Banco Santander) |  |             |     |     |            |  |    |                        |  |  | 0.2   |  |  |        |     |  |           |  |      |          |  |  | 0.2  |  |  |  | 0.4   | 
|Portugal                          |  |             |     |     |            |  |    |                        |  |  | 0.1   |  |  |        |     |  |           |  |      |          |  |  |     |  |  |  | 0.1   | 
|France                            |  |             | 0.1  |     |            |  | 0.3 |                        |  |  | 2.1   |  |  |        | 0.1  |  |           |  |      |          |  |  | 1.6  |  |  |  | 4.2   | 
|Germany                           |  |             | 0.1  |     |            |  |    |                        |  |  | 2.2   |  |  |        |     |  |           |  |      |          |  |  | 0.5  |  |  |  | 2.8   | 
|Other(3)                          |  |             | 0.5  |     |            |  |    |                        |  |  | 1.1   |  |  |        | 0.3  |  |           |  |      |          |  |  | 1.4  |  |  |  | 3.3   | 
|                                  |  |             | 1.5  |     |            |  | 0.3 |                        |  |  | 5.8   |  |  |        | 0.5  |  |           |  |      |          |  |  | 4.4  |  |  |  | 12.5  | 
|All other countries:              |  |             |      |     |            |  |     |                        |  |  |       |  |  |        |      |  |           |  |       |          |  |  |      |  |  |  |       | 
|UK                                |  |             | 17.0 | (5) |            |  | 0.4 |                        |  |  | 9.6   |  |  |        | 6.8  |  |           |  | 184.1 |          |  |  | 52.5 |  |  |  | 270.4 | 
|US                                |  |             | 2.5  |     |            |  | 0.2 |                        |  |  | 9.0   |  |  |        | 3.2  |  |           |  |      |          |  |  | 0.1  |  |  |  | 15.0  | 
|Japan(4)                          |  |             | 2.7  |     |            |  |    |                        |  |  | 1.0   |  |  |        | 0.1  |  |           |  |      |          |  |  | 1.7  |  |  |  | 5.5   | 
|Switzerland                       |  |             | 0.1  |     |            |  |    |                        |  |  | 0.2   |  |  |        |     |  |           |  |      |          |  |  | 0.4  |  |  |  | 0.7   | 
|Denmark                           |  |             |     |     |            |  |    |                        |  |  | 0.1   |  |  |        |     |  |           |  |      |          |  |  | 0.4  |  |  |  | 0.5   | 
|Russia                            |  |             |     |     |            |  |    |                        |  |  |      |  |  |        | 0.2  |  |           |  |      |          |  |  |     |  |  |  | 0.2   | 
|Other                             |  |             |     |     |            |  |    |                        |  |  | 1.5   |  |  |        | 0.4  |  |           |  |      |          |  |  | 1.9  |  |  |  | 3.8   | 
|                                  |  |             | 22.3 |     |            |  | 0.6 |                        |  |  | 21.4  |  |  |        | 10.7 |  |           |  | 184.1 |          |  |  | 57.0 |  |  |  | 296.1 | 
|Total                             |  |             | 23.8 |     |            |  | 0.9 |                        |  |  | 27.2  |  |  |        | 11.2 |  |           |  | 184.1 |          |  |  | 61.4 |  |  |  | 308.6 | 



|(1) | Excludes balances with central banks.
|--- | -------------------------------------

|(2) | Excludes cash at hand, macro hedge of interest rate risk, interests in other entities, intangible assets, property, plant and equipment, tax assets, retirement benefit assets and other assets. Loans are included gross
of credit provisions.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Includes The Netherlands of £1.4bn (2015: £1.0bn), Cyprus of £28m (2015: £39m), Greece of £nil (2015: £nil), Belgium, Finland and Austria. The 2015 balance includes Luxembourg of
£0.9bn.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Balances primarily relate to equity instruments listed in Japan and reverse repos with Japanese banks, held as part of our Short Term Markets business. The equity instrument risk exposures are hedged using derivative
instruments and the additional reverse repos are fully collateralised.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | In 2016, the classification of Social Housing loans was changed from Corporate to Governments. Applying this to balances at 31 December 2015, Corporate would reduce by £9.7bn to £42.8bn and Governments
would increase by £9.7bn to £26.7bn.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc127



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##### Table of Contents



Annual Report 2016

Risk review









Balances with other Banco Santander companies

We deal
with other Banco Santander companies in the ordinary course of business. We do this where we have a particular business advantage or expertise and where they can offer us commercial opportunities. This is done on the same terms as for similar
transactions with third parties. These transactions also arise where we support the activities of, or with, larger multinational corporate clients and financial institutions which may deal with other Banco Santander companies. We conduct these
activities in a way that manages the credit risk within limits acceptable to the PRA.

At 31 December 2016 and 2015, we had gross balances with other Banco
Santander companies as follows:



|             |  |                        |     |  |       |  |      |           |  |  |       |  |                        |  |      |       |  |  |       |  |     |           |  |  |       |  |  |  |     |  |  |  |     | 
|------------ |  | ---------------------- | --- |  | ----- |  | ---- | --------- |  |  | ----- |  | ---------------------- |  | ---- | ----- |  |  | ----- |  | --- | --------- |  |  | ----- |  |  |  | --- |  |  |  | --- | 
|             |  | 2016                   |     |  |       |  | 2015 |          
|             |  | Financial institutions |     |  |       |  |      |           |  |  |       |  | Financial institutions |  |      |       |  |  |       | 
|             |  | Banks                  |     |  | Other |  |      | Corporate |  |  | Total |  |                        |  |      | Banks |  |  | Other |  |     | Corporate |  |  | Total | 
|             |  | £bn                    |     |  | £bn   |  |      | £bn       |  |  | £bn   |  |                        |  |      | £bn   |  |  | £bn   |  |     | £bn       |  |  | £bn   | 
|Assets:      |  |                        |     |  |       |  |      |           |  |  |       |  |                        |  |      |       |  |  |       |  |     |           |  |  |       |  |  |  |     |  |  |  |     | 
|Spain        |  |                        | 2.1 |  |       |  |     |           |  |  |      |  |                        |  | 2.1  |       |  |  |       |  | 1.5 |           |  |  |      |  |  |  |    |  |  |  | 1.5 | 
|UK           |  |                        |    |  |       |  | 1.1  |           |  |  |      |  |                        |  | 1.1  |       |  |  |       |  |    |           |  |  | 1.3   |  |  |  |    |  |  |  | 1.3 | 
|Chile        |  |                        | 0.1 |  |       |  |     |           |  |  |      |  |                        |  | 0.1  |       |  |  |       |  | 0.3 |           |  |  |      |  |  |  |    |  |  |  | 0.3 | 
|Norway       |  |                        |    |  |       |  |     |           |  |  |      |  |                        |  |     |       |  |  |       |  | 0.1 |           |  |  |      |  |  |  |    |  |  |  | 0.1 | 
|Other <£100m |  |                        | 0.2 |  |       |  |     |           |  |  |      |  |                        |  | 0.2  |       |  |  |       |  | 0.1 |           |  |  | 0.1   |  |  |  |    |  |  |  | 0.2 | 
|             |  |                        | 2.4 |  |       |  | 1.1  |           |  |  |      |  |                        |  | 3.5  |       |  |  |       |  | 2.0 |           |  |  | 1.4   |  |  |  |    |  |  |  | 3.4 | 
|Liabilities: |  |                        |     |  |       |  |      |           |  |  |       |  |                        |  |      |       |  |  |       |  |     |           |  |  |       |  |  |  |     |  |  |  |     | 
|Spain        |  |                        | 2.9 |  |       |  | 0.2  |           |  |  | 0.1   |  |                        |  | 3.2  |       |  |  |       |  | 3.6 |           |  |  | 0.3   |  |  |  | 0.1 |  |  |  | 4.0 | 
|UK           |  |                        |    |  |       |  | 6.2  |           |  |  | 0.1   |  |                        |  | 6.3  |       |  |  |       |  |    |           |  |  | 2.0   |  |  |  | 0.1 |  |  |  | 2.1 | 
|Chile        |  |                        | 0.1 |  |       |  |     |           |  |  |      |  |                        |  | 0.1  |       |  |  |       |  | 0.3 |           |  |  |      |  |  |  |    |  |  |  | 0.3 | 
|Norway       |  |                        |    |  |       |  |     |           |  |  |      |  |                        |  |     |       |  |  |       |  | 0.1 |           |  |  |      |  |  |  |    |  |  |  | 0.1 | 
|Uruguay      |  |                        | 0.2 |  |       |  |     |           |  |  |      |  |                        |  | 0.2  |       |  |  |       |  |    |           |  |  |      |  |  |  |    |  |  |  |    | 
|Other <£100m |  |                        | 0.2 |  |       |  | 0.1  |           |  |  |      |  |                        |  | 0.3  |       |  |  |       |  | 0.2 |           |  |  | 0.1   |  |  |  |    |  |  |  | 0.3 | 
|             |  |                        | 3.4 |  |       |  | 6.5  |           |  |  | 0.2   |  |                        |  | 10.1 |       |  |  |       |  | 4.2 |           |  |  | 2.4   |  |  |  | 0.2 |  |  |  | 6.8 | 

2016 compared to 2015(unaudited)

The above balances with other Banco Santander companies at 31 December 2016 mainly comprised:

| | Repo liabilities of £nil (2015: £309m), classified as Deposits by banks
|- | -------------------------------------------------------------------------

| | Derivative assets of £2,363m (2015: £1,778m) subject to ISDA Master Agreements. These balances were offset by derivative liabilities of £2,122m (2015: £1,929m) and cash collateral received, as
described below, and are included in Note 12 to the Consolidated Financial Statements
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Cash collateral of £108m (2015: £217m) given in relation to derivatives futures contracts. The cash collateral was classified as Trading assets in the balance sheet. This was more than
offset by cash collateral received in relation to other derivatives of £379m (2015: £1,128m), classified as Trading liabilities and Deposits by banks. See Notes 11, 26 and 28 to the Consolidated Financial
Statements
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Deposits by customers of £5,128m (2015: £1,405m) and other liabilities of £279m (2015: £134m)
|- | ---------------------------------------------------------------------------------------------

| | Debt securities in issue of £198m (2015: £127m). These balances are holdings of debt securities by Banco Santander as a result of market purchases and for liability management purposes. See Note 30 to
the Consolidated Financial Statements
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Subordinated liabilities of £1,872m (2015: £1,656m) reflecting holdings of debt securities by Banco Santander as a result of market purchases and for liability management purposes
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | Financial liabilities designated at fair value of £10m (2015: £25m). See Note 29 to the Consolidated Financial Statements.
|- | --------------------------------------------------------------------------------------------------------------------------

We consider the dissolution of the eurozone and widespread redenomination of our euro-denominated assets and liabilities to be highly improbable. However, we have
analysed the redenomination risk that might arise from an exit of a member state from the euro or a total dissolution of the euro and how that would be implemented. It is not possible to predict what the total financial impact on us might be of
this. Determining which balances would be legally redenominated is complex and depends on a number of factors, including the precise exit scenario. This is because the effects on contracts of a disorderly exit or one sanctioned under EU law may
differ. We monitor these risks and have taken steps to mitigate them.





128Santander UK plc



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##### Table of Contents









Governance





130

Directors135

Corporate governance report135

Chairs report on corporate governance139

Board Nomination Committee Chairs report141

Board Risk Committee Chairs report146

Board Audit Committee Chairs report152

Directors Remuneration report152

Board Remuneration Committee Chairs report154

Remuneration report and remuneration policies156

Remuneration implementation report160

Directors report






Santander UK plc129



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##### Table of Contents



Annual Report 2016

Governance









Board of Directors



|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|----------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Chair                               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                                    | 
|Shriti Vadera                       |  | Chair since 30 March 2015, previously Independent Non-Executive Director and Deputy Chair from 1 January 2015.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                    |  | Skills and experience Shriti Vadera was an investment banker
with SG Warburg / UBS from 1984 to 1999, on the Council of Economic Advisers, HM Treasury from 1999 to 2007, Minister in the UK Government from 2007 to 2009 (Cabinet Office, Business Department and International Development department), G20 Adviser
from 2009 to 2010, and advised Governments, banks, and investors on the eurozone crisis, banking sector, debt restructuring and markets from 2010 to 2014.                                                                                                                                                                                                                                                            |  | Other principal appointments Chair of Santander UK Group
Holdings plc* since 30 March 2015. Senior Independent Director of BHP Billiton plc since 2015 and Non-Executive Director since 2011.
Non-Executive Director of AstraZeneca plc since 2011. 
Board committee membership Nomination Committee since 1 January 2015 and Chair
since 30 March 2015.                                                                                                                                                                                                                                                                                                                 
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                                   
|Independent Non-Executive Directors
|                                    | 
|Alain Dromer                        |  | Appointed Independent Non-Executive Director on 1 October 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                    |  | Skills and experience Alain Dromer is an experienced financial
services executive director with 25 years experience in asset management and capital markets in the UK and Europe, together with nearly 10 years experience with the French Treasury.
 He was previously CEO of Aviva Investors; Global Head of Group Investment Business of HSBC
Investments; Head of Asset Management at CCF Crédit Commercial de France and Head of Capital Markets of La Compagnie Financière Edmond de Rothschild Banque. Prior to that, Alain held various roles in the Government of France, French
Treasury including Section Head, World Monetary Affairs and IMF, and Deputy Head/Office of Financial Markets.                                   |  | Other principal appointments Independent Non-Executive
Director of Santander UK Group Holdings plc* since 2014. Director of Moodys Investors Service Ltd since 2013.
Director of Moodys Investor Service EMEA Ltd since 2014. Independent Member of
the Board of Moodys Deutschland GmbH since 2013. Independent Member of the Board of Moodys France SAS since 2013.
Non-Executive Director of Majid Al Futtaim Trust LLC since 2013. Non-Executive Director
of Henderson European Focus Trust plc since 2014.  Board committee membership
Audit Committee since 1 January 2014. Remuneration Committee since 1 January 2014.
Risk Committee since 15 December 2015.
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                                    | 
|Annemarie Durbin                    |  | Appointed Independent Non-Executive Director on 13 January 2016.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                    |  | Skills and experience Annemarie Durbin has 30 years
international retail, commercial, corporate and institutional banking experience culminating in being a member of Standard Chartereds Group Executive Committee. In addition, she was Group Company Secretary at Standard Chartered for a number of
years and an independent non-executive director on the board of Fleming Family and Partners Limited. Annemarie is an executive leadership coach and a Board governance consultant.
 Annemarie brings broad based international banking, leadership, talent development, executive
remuneration, property, internal audit, crisis management, business continuity, operational excellence and governance capabilities to the Board. |  | Other principal appointments Independent Non-Executive
Director of Santander UK Group Holdings plc* since 13 January 2016. Non-Executive Director of Ladbrokes Coral Group plc since 24 January 2017.
Non-Executive Director of WH Smith PLC since 2012. Member of the Listing Authority
Advisory Panel since 2015 and Chair since 1 April 2016. Secretary to Haroldston Limited since 2010.
 Board committee membership
Audit Committee since 13 January 2016. Remuneration Committee since 13 January
2016. Risk Committee since 13 January 2016.                                                                                                                      
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

* Part of the Banco Santander group.





130Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|--------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Ed Giera        |  | Chair of Board Risk Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                | 
|                |  | Appointed Independent Non-Executive Director on 19 August 2015.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                |  | Skills and experience Ed Giera is an experienced Non-Executive
Director, having held a number of Board roles since retiring from JP Morgan Securities, the investment banking affiliate of JP Morgan Chase & Co. He provided corporate finance advisory and fiduciary services as Principal of EJ Giera LLC and was
formerly a Non-Executive Director for NovaTech LLC, the Life and Longevity Markets Association, and the Renshaw Bay Structured Finance Opportunity Fund. Ed was also a director of Pension Corporation Group Ltd from 2012 to 2015, and Pension Insurance
Corporation Holdings Ltd from 2008 to 2012. |  | Other principal appointments Independent Non-Executive
Director of Santander UK Group Holdings plc* since 19 August 2015. Non-Executive Director of ICBC Standard Bank Plc since 2015.
Non-Executive Director of the Renshaw Bay Real Estate Finance Fund since 2012.
Non-Executive Director of Pension Insurance Corporation Group Limited since 2015. 
Board committee membership Audit Committee since 19 August 2015.
Nomination Committee since 19 August 2015. Remuneration Committee since 19 August
2015. Risk Committee member since 19 August and Chair since 26 October 2015.                                                   
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Chris Jones     |  | Chair of Board Audit Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                | 
|                |  | Appointed Independent Non-Executive Director on 30 March 2015.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                |  | Skills and experience Chris Jones was a partner at PwC from
1989 to 2014. He focused on the financial services industry from the mid-1980s and was a Senior Audit Partner specialising in the audit of banks and other financial services companies. He also led PwCs EMEA Financial Services practice and was
a member of their Financial Services global leadership team.  Chris is a past president of the
Association of Corporate Treasurers.                                                                                                                                                                       |  | Other principal appointments Independent Non-Executive
Director of Santander UK Group Holdings plc* since 30 March 2015. Non-Executive Director of Redburn (Europe) Ltd since 2014.
Chairman of the Advisory Board of the Association of Corporate Treasurers since 2010.
Investment Trustee of the Civil Service Benevolent Fund since 2015. Audit Committee
member of the Wellcome Trust since 1 September 2016.  Board committee membership
Audit Committee since 30 March 2015 and Chair since 30 June 2015. Nomination Committee
since 19 May 2015. Remuneration Committee since 1 September 2015. Risk Committee
since 30 March 2015.
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                | 
|Genevieve Shore |  | Appointed Independent Non-Executive Director on 18 May 2015.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                |  | Skills and experience Genevieve Shore brings digital,
technology and commercial expertise to Santander UK from a career in the media, publishing and technology sectors, most recently as Chief Product and Marketing Officer of Pearson plc and previously as Director of Digital Strategy and Chief
Information Officer.  Genevieve has also advised and invested in Education Technology start ups
and works with female executives as a coach and mentor.                                                                                                                                                             |  | Other principal appointments Independent Non-Executive of
Director Santander UK Group Holdings plc* since 18 May 2015. Non-Executive Director Next Fifteen Communications Group plc since 2015.
Non-Executive Director of Moneysupermarket.com Group plc since 2014. Member of the
Advisory Board for LEGO Education since 2015.  Board committee membership
Audit Committee since 1 September 2015. Remuneration Committee since 1 September 2015. Risk Committee since 1 September 2015.                                                                                                                                                 
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

* Part of the Banco Santander group.





Santander UK plc131



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##### Table of Contents



Annual Report 2016

Governance









|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Scott Wheway                                      |  | Senior Independent Director and Chair of Board Remuneration Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                                  | 
|                                                  |  | Appointed Senior Independent Director on 18 May 2015 and Independent Non-Executive Director on 1 October 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                  |  | Skills and experience Scott Wheway brings extensive retail and
consumer knowledge to the Board, having formerly held various senior roles at Tesco plc, including Operations Director and CEO, Tesco Japan. Following this, he was CEO of Best Buy Europe and Managing Director and Retail Director of Boots Company plc
(now known as The Boots Company Ltd) and Managing Director of Boots the Chemist at Alliance Boots plc. Scott also has experience of the financial services sector through his roles at Aviva plc and Aviva Insurance Limited.                                                                                                                                                                                                            |  | Other principal appointments Independent Non-Executive
Director of Santander UK Group Holdings plc* since 2014. Non-Executive Director of Centrica plc since 1 May 2016.
Chairman of Aviva Insurance Limited since 2015. Non-Executive Director of Aviva plc
since 2007.  Board committee membership
Audit Committee since 1 September 2015. Nomination Committee since 1 January 2014.
Remuneration Committee since 1 January 2014 and Chair since 1 September 2015. Risk
Committee since 1 January 2014.                                                                                                                                                                          
|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                 
|Banco Santander Nominated Non-Executive Directors
|                                                  | 
|Ana Botín                                         |  | Appointed Non-Executive Director on 29 September 2014.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                  |  | Skills and experience Ana Botín joined the Banco
Santander group in 1988 and was appointed Executive Chair of Banco Santander SA in September 2014. Ana has been a member of Banco Santander SAs Board and Executive Committee since 1989 and previously served as Chief Executive Officer and
Executive Director of Santander UK plc from December 2010 to September 2014. She has extensive financial services experience. She directed Banco Santander SAs Latin American expansion in the 1990s and was responsible for the Latin
American Corporate Banking, Asset Management and Treasury divisions.                                                                                                                                                     |  | Other principal appointments Non-Executive Director of
Santander UK Group Holdings plc* since 29 September 2014, previously Executive Director of Santander UK plc* from 2012 to 2014.
Executive Chair of Banco Santander SA* since 2014 and Director since 1989.
Non-Executive Director of The Coca-Cola Company since 2013. Director of SAM Investment
Holdings Limited* since 2013. Founder and Vice-Chair of the Empresa y Crecimiento Foundation since 2002
Vice-Chair of the World Business Council for Sustainable Development since 11 January 2016.
Member of the MITs CEO Advisory Board since 2015. 
Board committee membership Nomination Committee since 27 July
2015.
|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                  | 
|Bruce Carnegie-Brown                              |  | Appointed Independent Non-Executive Director on 1 October 2012. On appointment as first Vice Chair and Lead Independent Director of the Board of Banco Santander SA on 12 February 2015, he was
no longer considered an Independent Non-Executive Director.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                  |  | Skills and experience Bruce Carnegie-Brown has performed a
wide variety of risk-related roles in the financial services sector, primarily in insurance and investment banking, providing him with a breadth of experience and insight of financial services. He was Managing Director of JP Morgan from 1985 to
2003. Following this, Bruce was CEO of Marsh UK Limited from 2003 to 2006; and served as Chair of Aon UK Limited from 2012 to 2015. He was Senior Independent Director of Catlin Group Limited from 2010 to 2014 and Close Brothers Group plc from 2006
to 2014.  Other principal appointments
Non-Executive Director of Santander UK Group Holdings plc* since 2014. Vice Chair and
Lead Independent Director of Banco Santander SA* since 2015. |  | Non-Executive Director Jardine Lloyd Thomson Group plc since 1 May 2016.
Non-Executive Director of Moneysupermarket.com Group plc since 2010 and Chair since 2014.
Director of Historic Royal Palaces since 2014. Member of the Investment Committee of
Gresham House plc since 31 January 2016. President-elect of the Chartered Management Institute since 19 September 2016.
 Board committee membership
Nomination Committee since 19 March 2013. Remuneration Committee since 1 October 2012.
Risk Committee since 1 October 2012.                                                                                                                                             
|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

* Part of the Banco Santander group.





132Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                   
|----------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Juan Rodríguez Inciarte |  | Appointed Non-Executive Director on 1 December 2004.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Deputy Chair            |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                   
|                        |  | Skills and experience Juan Rodríguez Inciarte joined
Banco Santander SA in 1985. After holding various positions, he was appointed to the Board of Directors in 1991, holding this office until 1999. Juan was also an Executive Director of Banco Santander SA from 2008 to 2015.
 Juan has also held directorships at the Royal Bank of Scotland plc (RBS) and National Westminster
Bank plc from 1998 to 2004, ABN Amro, First Fidelity Bancorp, First Union Corporation (now part of Wells Fargo), and at NIBC Bank NV.                                                                                                                                                                                                                                                                                                                                                            |  | Other principal appointments Non-Executive Director of
Santander UK Group Holdings plc* since 2014. Director Santander Consumer Finance SA* since 2007. Director of SAM Investment Holdings Limited* since 2013.
Director Vista Capital de Expansion SA since 2007. Chairman Saarema Inversiones SA since 2005. 
Board committee membership Risk Committee since 1 September 2015.
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                   
|                        | 
|Peter Jackson           |  | Appointed Non-Executive Director on 1 April 2016, stepping down on 28 February 2017.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                        |  | Skills and experience Peter Jackson has extensive experience
and knowledge of the financial industry and is Head of Banco Santander SAs Innovation business. He was CEO of the Travelex Group, where he led a major process to transform the company, focused on digital innovation and business re-engineering,
and through mergers and acquisitions.  Previously, Peter held senior positions at Lloyds Banking
Group plc and Halifax Bank of Scotland plc, and was a consultant at McKinsey & Company.                                                                                                                                                                                                                                                                                                                                                                             |  | Other principal appointments Non-Executive Director of
Santander UK Group Holdings plc* since 1 April 2016. Head of Corporate Innovation of Banco Santander SA since 27 January 2016.
Director of Santander Fintech Limited since 9 March 2016. Director of Aire Labs Limited
since 2015. Non-Executive Director of Paddy Power Betfair plc since 2013.                           
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                   
|                        | 
|Manuel Soto             |  | Appointed Non-Executive Director on 1 November 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|                        |  | Skills and experience Manuel Soto was formerly a Board member
of Banco Santander SA from 1999 to April 2013, and during that period was Chair of the Banco Santander SA Audit and Compliance Committee. 
Manuel has significant experience in financial services, having undertaken a variety of Executive and Director level roles, including a 38 year career at Arthur Andersen,
where he discharged, among other responsibilities, EMEIA Area Managing Partner from 1980 to 1998, and Chairman of the Worldwide Board from 1987 to 1989. Accordingly, he brings considerable experience in financial reporting, internal control systems
and risk management, as well as international management of the service industry.  He also served
on the Board as Vice Chairman of Indra Sistemas SA from 1999 to 2011 and on the Board of Corporación Financiera Alba from 1999 to 2010. |  | Other principal appointments Non-Executive Director of
Santander UK Group Holdings plc* since 2014. Director of Cartera Industrial REA SA since 2008.
Member of advisory board of Grupo Barceló since 2012. Member of advisory board
of Befesa Medio Ambiente SA since 2013.  Board committee membership
Audit Committee since 1 January 2014.                                    
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                   
|                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                   

* Part of the Banco Santander group.





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Executive Director



|                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  |                                                                                                                                                                                                                                                                                                                                                            
|-------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Nathan Bostock Chief Executive Officer |  | Chief Executive Officer since 29 September 2014, previously Executive Director and Deputy Chief Executive Officer from 19 August 2014.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                       |  | Skills and experience Nathan Bostock joined Santander UK from
RBS, where he was an Executive Director and Group Finance Director. He joined RBS in 2009 as Head of Restructuring and Risk and Group Chief Risk Officer. 
Nathan previously spent eight years with Abbey National plc (now Santander UK plc) from 2001 to 2009 and served on the Board as an Executive Director from 2005. During
his time with Abbey National plc, he held various senior positions including Chief Financial Officer and Executive Director. Nathan was also previously at RBS from 1991 to 2001 in a number of senior positions and spent seven years before that with
Chase Manhattan Bank, having previously qualified as a Chartered Accountant with Coopers & Lybrand, (now PwC). |  | Other principal appointments Chief Executive Officer of
Santander UK Group Holdings plc* since 19 August 2014. Director of Santander Fintech Limited* since 2015. Director of SAM Investment Holdings Limited* since 2014.
Member of the PRA Practitioner Panel since 2014. Member of the Financial Services Trade and Investment Board (FSTIB) since 2015.
|                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  |                                                                                                                                                                                                                                                                                                                                                            
|                                       | 
|Non-Board Executive                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                       | 
|Antonio Roman                          |  | Appointed Chief Financial Officer on 30 October 2015.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                       |  | Skills and experience Antonio Roman has extensive financial
services experience across a wide range of areas including Finance, Investor Relations and Retail Banking. He was appointed Treasurer of Santander UK plc in 2014, with responsibility for the management of interest risk, liquidity, funding, economics
and investor relations. Antonio joined Santander UK plc in 2013 as Deputy Treasurer and prior to that held the position of Head of Financial Management at Banco Español de Credito SA*.
 Antonio also worked for Grupo Caja Madrid where he served as Financial Controller from 2007 to
2010.                                                                                                                                                    |  | Other principal appointments Director of Abbey National
Treasury Services plc* since 2014. Management Board Member of Abbey Covered Bonds LLP* since 2014.
Member of the British Bankers Associations Financial and Risk Policy Committee since 2015.                                                                                                     
|                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  |                                                                                                                                                                                                                                                                                                                                                            



* Part of the Banco Santander group.





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| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 



Chairs report on corporate governance My report describes the roles, responsibilities and activities of the Board and its Committees.  We remain steadfast in our ambition to be the best governed bank in the UK.  LOGO  Shriti Vadera Chair 22 February 2017     LOGO

For Board membership, tenure and attendance see page 158LOGO

For Board responsibilities see page 138
 Board effectiveness review This year we undertook an external effectiveness evaluation of the Board, its Committees and Non-Executive Directors (NEDs). This has provided valuable independent
assurance and benchmarking of the effectiveness of our Board and Board Committees. The review confirmed that we have made rapid progress and that our governance is effective and of a high standard. The next phase of our development as a Board
will be to further improve efficiency. UK Group Framework(1) The responsibilities and relationship with Banco Santander, our sole shareholder, is set out in the UK Group Framework and agreed by Santander UK and Banco Santander.
This provides Banco Santander with the oversight and controls it needs while discharging our responsibilities in the UK. Clarity of roles and responsibilities is key to ensuring proper accountability for decisions and outcomes. The UK Group
Framework was explained in last years report, and further information is available on page 160.     (1)
In this Annual Report, the terms independence and independent are, unless otherwise stated, defined in accordance with our UK Group Framework. For further details see page 160.


Board membership A number of long-serving Directors stepped down and new INEDs were appointed during 2015. Membership remained stable during 2016. Through a rigorous recruitment process
we have ensured that the Board has the necessary skills and experience to discharge its responsibilities effectively. In April José María Fuster stepped down from the Board. I should like to thank him for his valuable service over the
past 11 years. The composition continues to align with the UK Group Framework principles of at least 50% independent membership, appropriate breadth and depth of skills and experience, and gender diversity. The Board is satisfied that the Chair and those Directors who have external directorships have sufficient time available to discharge their responsibilities and to be
effective members of the Board. Given our 100% ownership by Banco Santander and the appointment process for Directors set out in the UK Group Framework, Santander UK
has not required the Directors to offer themselves for re-election every year or for new Directors appointed by the Board to offer themselves for election at the next Annual General Meeting. However, in accordance with industry good practice, this
year we have introduced one-year rolling terms for all NEDs. Board committees The Board delegates certain responsibilities to Committees to assist in discharging its duties, as set out on page 138. The Committees play an essential role in
supporting the Board in these duties, providing focused oversight of key areas and aspects of the business. The role and responsibilities of the Board and each Board
Committee are set out in formal Terms of Reference. These are reviewed at least annually. The Board Committees make recommendations to the Board in accordance with their Terms of Reference. The Chair of each Committee reports to the Board at each
meeting on the matters discussed and significant developments within their remit that warrant further consideration by the Board. The minutes of each meeting, except for the Board Nomination Committee, are provided to the Board for information.








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All Board Committees have a majority of INEDs in accordance with the UK Group Framework. Furthermore, all INEDs are members
of the Board Audit, Board Risk and Board Remuneration Committees in order to provide efficient working and effective oversight. The activities undertaken by each of the Committees are set out in the Board Committee Chairs reports on pages 139
to 153. The full Terms of Reference for each Committee are available on Santander UKs website www.santander.co.uk and from the Company Secretary upon request. Board fees We reviewed all Board and Board Committee fees for 2016 and no
changes were made. Board fees are set out on page 157 in the Directors Remuneration Report. Conflicts of interest Santander UKs Articles of Association contain provisions that allow the Board to consider and, if it sees fit, to authorise situational conflicts. The Board
confirms that such powers have been operated effectively and that a formal system for Directors to clear their interest and for the non-conflicted Directors to authorise situational conflicts continues to be in place. Any authorisations given are
recorded by the Company Secretary. Board activities The Chair, together
with the CEO and Company Secretary, ensure that the Board has an appropriate schedule so that its time is focused on matters of strategic importance to the business and appropriate monitoring of risks. This is subject to continuous review and has
enabled us to improve our approach to setting the agenda, the information we receive and the debates we have. In line with an assessment of the forward looking agenda, it has been agreed that the number of Board meetings held in 2017 will be reduced
to eight. We will keep this under review as we continue to enhance our operating efficiency. In July 2016, in addition to the usual monthly meeting, the Board held
an annual Strategy Day where we considered the emerging banking landscape and our long-term strategy, including digital transformation, innovation and omni-channel transformation for the benefit of our customers. The Board ensures regular contact with senior leadership by regularly inviting relevant business and function heads to present on current development.


LOGO  The delivery of our tailored Director induction programmes for our most recent appointments have continued through 2016 and
form part of the Directors ongoing development plans. The external Board effectiveness review conducted this year included individual evaluation of all Board members, and the feedback from those reports will also be included in individual
development plans. This ensures that Directors have the necessary understanding of the business, its activities, core markets, and operating environment. The Company Secretary supports the Chair in designing individual inductions for all Directors,
which include site visits and cover topics such as strategy, key risks and current issues including the legal and regulatory landscape.
 Throughout 2016 we have continued to deliver regular workshops for all Directors to further develop their knowledge and
understanding of key business issues. This has been supplemented with visits to corporate sites and branches. A summary of the Boards activities in 2016 is set
out on the following page.
     LOGO








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| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 





Summary of Board activities in 2016



|                       |  |                                         |  |                                                                                                                                                                                                                                                                                                                                                     
|---------------------- |  | --------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                       | 
|Activity               |  | Actions taken by the Board and outcomes
|                       |  |                                        
|Business and customer  |  |                                        |  | Reviewed, challenged and approved the 3-year business plan 2017-2019 and the Budget for 2017, including associated risk assessments and UK-relevant material presented at the Santander group investor day.                                                                                                                                         
|                       |  |                                        |  | Reviewed, challenged and approved changes to the 1l2l3 World proposition and continued to monitor their development.                                                                                                                                                                                                                                
|                       |  |                                        |  | Reviewed, challenged and remained appraised of strategic business opportunities as they have arisen.                                                                                                                                                                                                                                                
|                       |  |                                        |  | Received detailed analysis of, the competitive landscape, Companys Digital Strategy and innovation both during Board meetings and at our dedicated Board Strategy Day.                                                                                                                                                                             
|                       |  |                                        |  | Reviewed, challenged and remained appraised of developments with customer experience and complaints.                                                                                                                                                                                                                                                
|                       |  |                                        |  | Reviewed, challenged and monitored the performance and strategy of the Retail Banking Division. This included its holistic strategy, as well as a specific focus on customer relationship management, omni-channel, product development,
Wealth Management, Private Banking and customer liabilities. The Board also approved the Mortgage Strategy.
|                       |  |                                        |  | Reviewed, challenged and remained appraised of the performance and strategy of Santander Global Corporate Banking, including its capabilities from a client perspective and fee sharing policy between the UK and rest of Banco
Santander.                                                                                                          
|                       |  |                                        |  | Reviewed, challenged and remained appraised of developments to enhance the control environment in Santander Global Corporate Banking.                                                                                                                                                                                                               
|                       |  |                                        |  | Reviewed, challenged and remained appraised of the performance and strategy of Santander Corporate and Commercial Banking.                                                                                                                                                                                                                          
|                       |  |                                        |  | Reviewed and remained appraised of the Santander (UK) Group Pension Scheme, pension risk, and methodology changes.                                                                                                                                                                                                                                  
|                       |  |                                        |  | Reviewed, challenged and remained appraised of Santander UKs sustainability activity and report.                                                                                                                                                                                                                                                   
|                       |  |                                        |  | Reviewed, challenged and remained appraised of the progress made on the Santander Universities Programme in the
UK.                                                                                                                                                                                                                                 
|                       |  |                                        
|Regulation and capital |  |                                        |  | Remained fully appraised of the regulatory dialogue regarding the application of ring-fencing requirements and management proposals for the implementation of ring-fencing. This included operating model approvals and the approval of
associated regulatory submissions.                                                                          
|                       |  |                                        |  | Considered and approved the optimal model for implementation of ring-fencing requirements, with primary consideration of the needs of our customers. Approved a revision to that model in the light of the changing macro
environment.                                                                                                              
|                       |  |                                        |  | Reviewed, challenged and approved the ICAAP, ILAAP and Santander UKs Recovery and Resolution Plan.                                                                                                                                                                                                                                                 
|                       |  |                                        |  | Reviewed, challenged and approved the adequacy and effectiveness of stress-testing and capital management.                                                                                                                                                                                                                                          
|                       |  |                                        |  | Reviewed, challenged and approved Santander UKs wholesale funding programme arrangements.                                                                                                                                                                                                                                                          
|                       |  |                                        |  | Reviewed the asset and liability management activities.                                                                                                                                                                                                                                                                                             
|                       |  |                                        |  | Reviewed and approved the payment of dividends.                                                                                                                                                                                                                                                                                                     
|                       |  |                                        |  | Remained appraised of regulatory developments  including competition and market reviews and payment systems directive  reviewed compliance with regulatory requirements and fully considered all regulatory feedback from
the PRA and FCA.                                                                                                        
|                       |  |                                        |  | Approved Santander UKs Annual Report and Accounts.                                                                                                                                                                                                                                                                                                 
|                       |  |                                        
|People                 |  |                                        |  | Received regular updates challenged management on a range of people issues including HR strategy and talent management.                                                                                                                                                                                                                             
|                       |  |                                        |  | Reviewed a new succession planning framework and received an update on progress with implementation.                                                                                                                                                                                                                                                
|                       |  |                                        |  | Reviewed new diversity targets.                                                                                                                                                                                                                                                                                                                     
|                       |  |                                        |  | Gave particular focus to initiatives to embed the right culture and behaviours across Santander UK                                                                                                                                                                                                                                                  
|                       |  |                                        |  | Assessed the performance of the CEO.                                                                                                                                                                                                                                                                                                                
|                       |  |                                        |  | Participated in the Banking Standards Boards assessment process and approved our response the Banking
Standards Board questionnaire.                                                                                                                                                                                                               
|                       |  |                                        
|Risk and control       |  |                                        |  | Reviewed, challenged and approved updated risk appetites and monitored performance against them across all risk types.                                                                                                                                                                                                                              
|                       |  |                                        |  | Received regular enterprise wide risk updates from the Chief Risk Officer.                                                                                                                                                                                                                                                                          
|                       |  |                                        |  | Reviewed and challenged Conduct Risk Programme and Risk Framework.                                                                                                                                                                                                                                                                                  
|                       |  |                                        |  | Reviewed the business impacts of the EU referendum, in particular the impact on the 3-year business plan and budget.                                                                                                                                                                                                                                
|                       |  |                                        |  | Reviewed, challenged and approved the annual whistleblowing report.                                                                                                                                                                                                                                                                                 
|                       |  |                                        |  | Considered specific issues, including remediation of crystallised conduct risks and Santander Global Corporate Banking risk and control environment.                                                                                                                                                                                                
|                       |  |                                        |  | Remained appraised of the strategy to mitigate operational risk in critical infrastructure and banking processes.                                                                                                                                                                                                                                   
|                       |  |                                        |  | Reviewed, challenged and approved Santander UKs IT risk, cyber risk and Financial Crime risk management plans.                                                                                                                                                                                                                                     
|                       |  |                                        |  | Remained appraised of Corporate Affairs and Marketing activity to ensure protections are in place for Santander
UK brand and reputation.                                                                                                                                                                                                            
|                       |  |                                        
|Governance             |  |                                        |  | Reviewed and approved revisions to the UK Corporate Governance Framework.                                                                                                                                                                                                                                                                           
|                       |  |                                        |  | Renewed a set of strategic priorities for the Board to guide it in discharging its responsibilities.                                                                                                                                                                                                                                                
|                       |  |                                        |  | Reviewed enterprise wide governance arrangements to ensure that governance and controls in the UK are robust and support the proposed operating model and structural change resulting from ring-fencing.                                                                                                                                            
|                       |  |                                        |  | Reviewed and assessed the implications of implementation of the Senior Managers Regime.                                                                                                                                                                                                                                                             
|                       |  |                                        |  | Reviewed Santander UKs transformation agenda to support its ambition to become a customer centric bank which helps people and businesses prosper.                                                                                                                                                                                                  
|                       |  |                                        |  | Reviewed the Terms of Reference for the Board and Board Committees.                                                                                                                                                                                                                                                                                 





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|     |  |                                                              |  |                                            |   |                      |                                                                                      |                                                                                                                                                                                                       
|---- |  | ------------------------------------------------------------ |  | ------------------------------------------ | - | -------------------- | ------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|     |  |                                                              |  | Board and Board Committee responsibilities
|     |  |                                                              | 
|     |  |                                                              |  |                                            |   | Key responsibilities
|     |  |                                                              |  |                                           
|     |  |                                                              |  | Board                                      |   |                     |                                                                                      | Review, approve and monitor performance in respect of corporate strategy, major plans of action, Risk Appetite and policies, annual budgets and business plans.                                       
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Monitor the effectiveness of Santander UKs governance arrangements.                                                                                                                                  
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Monitor the performance of the CEO and Senior Executives.                                                                                                                                             
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Ensure that appointments to the Board or its Committees are effected in accordance with the appropriate governance process.                                                                           
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Monitor and manage potential conflicts of interest of management, Board members, shareholders,
external advisers and other service providers.                                                         
|     |  |                                                              |  |                                           
|LOGO |  | For Board Nomination Committee Chairs
report see page 139   |  | Board Nomination Committee                 |   |                     |                                                                                      | Regularly review the structure, size and composition of the Board, including skills, knowledge, experience and diversity.                                                                             
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Consider succession planning for Directors and senior executives.                                                                                                                                     
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Identify and nominate candidates to fill Board vacancies as and when they arise.                                                                                                                      
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Regularly assess the performance of the Board.                                                                                                                                                        
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review annually whether Non-Executive Directors have dedicated sufficient time to their duties to have been effective in their role.                                                                  
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Oversee Santander UKs governance arrangements.                                                                                                                                                       
|     |  |                                                              |  |                                           
|LOGO |  | For Board Risk Committee Chairs report see
page 141         |  | Board Risk Committee                       |   |                     |                                                                                      | Advise the Board on the enterprise wide risk profile, Risk Appetite and strategy.                                                                                                                     
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review the enterprise wide risk profile by way of business updates provided by the First Line of Defence and regular reports and updates on each key risk type provided by the Second Line
of Defence.
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Provide advice, oversight and challenge to embed and maintain a supportive risk culture throughout Santander UK.                                                                                      
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review the Risk Framework and recommend it to the Board for approval.                                                                                                                                 
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review and approve the key risk type and risk activity frameworks identified in the Santander UK Risk Framework.                                                                                      
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review the capability to identify and manage new risks and risk types.                                                                                                                                
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Oversee and challenge the day-to-day risk management actions and oversight arrangements and adherence to Santander UKs risk frameworks and policies.                                                 
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review proposals for the firms Risk Appetite and recommend these to the Board for
approval.                                                                                                          
|     |  |                                                              |  |                                           
|LOGO |  | For Board Audit Committee Chairs report see
page 146        |  | Board Audit Committee                      |   |                     |                                                                                      | Monitor and review the integrity of the financial statements of Santander UK.                                                                                                                         
|     |  |                                                              |  |                                            |  |                      | Keep under review the adequacy and effectiveness of the internal financial controls.
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review the adequacy of Whistleblowing arrangements.                                                                                                                                                   
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Monitor and review the effectiveness of the Internal Audit function.                                                                                                                                  
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Assess the performance of the External Auditors and oversight of their independence.                                                                                                                  
|     |  |                                                              |  |                                           
|LOGO |  | For Board Remuneration Committee Chairs report
see page 152 |  | Board Remuneration                         |   |                     |                                                                                      | Consider, agree and recommend to the Board the principles and parameters of Santander UKs remuneration and reward policies and frameworks.                                                           
|     |  |                                                              |  | Committee                                  |   |                     |                                                                                      | Consider and approve specific remuneration packages for executive                                                                                                                                     
|     |  |                                                              |  |                                            |   |                      |                                                                                      | directors and other senior management.                                                                                                                                                                
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Oversee the implementation of remuneration policies, ensuring they                                                                                                                                    
|     |  |                                                              |  |                                            |   |                      |                                                                                      | promote sound and effective risk management.                                                                                                                                                          
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Determine and oversee the remuneration governance framework.                                                                                                                                          
|     |  |                                                              |  |                                            |   |                     |                                                                                      | Review and approve regulatory submissions in relation to remuneration.                                                                                                                                





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| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 





Board Nomination Committee Chairs report

We ensure that the Board composition and overall governance arrangements of

Santander UK are fit for purpose and
aligned to our operating model.





We continue to focus on overall effectiveness and ensuring our readiness for implementation of ring-fencing.  LOGO Shriti Vadera Board Nomination Committee
Chair 22 February 2017     LOGO

For Committee membership, tenure and
attendance see page 158LOGO

For the responsibilities of the Committee see
page 138
 Overview of the year The
Committee met on five occasions during the year and continued its focus on improving our overall effectiveness, conducting an external evaluation of the Board, overseeing the development of appropriate succession policy and ensuring our readiness
for implementation of ring-fencing. Board and Committee membership The
Board composition aligns with the UK Group Framework principles (see page 160) of at least 50% Independent membership (as defined on page 160), appropriate breadth and depth of skills and experience, and gender diversity. The Committee has assessed
the composition of the Board as possessing the right skill sets to support our future strategy. All INEDs are members of the Board Risk, Audit and Remunerations
Committees. The sizeable majority of INEDs on these Committees ensures constructive debate and challenge. This year, we have introduced a one year rolling term for
NEDs and INEDs in line with industry best practice. This will also help ensure that we have a phased approach to tenure going forward thereby facilitating future transitions between Directors. External evaluation of Board effectiveness The Committee engaged an
independent consultant to evaluate the effectiveness of the Board and its Committees. The review process involved interviews with each of the Board Directors and executive team as well as observation of Board and Board Committee meetings. The review
confirmed that we have made rapid progress and that our governance is effective and of a high standard. It has also helped to identify ways in which we can become more efficient. The review included individual evaluation of all Board members, and
the feedback from those reports will be included in Board members individual development plans. The review findings and suggested actions were presented to the
Board in October and the lessons learned have been incorporated into our continuous improvement action plan which we developed following last years internal board effectiveness review. The Board continues to closely monitor progress against
the action plan.


Skills and experience The
Committee continued to monitor Board members skills and experience through the year, in particular training needs for the most recently appointed INEDs and ongoing training and development for the whole Board. New Directors have spent
significant time on their induction, including visits to corporate sites and branches, and we have instituted regular workshops for all Directors to further develop our knowledge and understanding of key risks and business issues. The external Board
effectiveness review conducted this year included individual evaluation of all Board members, and the feedback from those reports will also be included in individual development plans. Diversity The Committee has maintained its commitment to ensuring appropriate
gender diversity on the Board. In 2016 we set an aspirational target of 33% women on the Board by 2020 and currently have 31% women on the Board. Santander UK has also committed to gender targets for our senior female management population, and we
have embedded these into our Executive Committee annual performance objectives. We will continue to ensure that gender and broader diversity remains front of mind in
our succession planning. Succession Planning The Committee is responsible
for overseeing the process of succession for Board Directors. The Committee has also been working to ensure that a robust succession planning framework is in place for senior management. As a very important issue pertaining to the duties of all
Directors, this is now also a full Board agenda item. Banking Reform The
Committee has focused on ring-fencing and defining Board and Executive governance structures, in order to ensure we meet new regulatory requirements while maintaining a robust and efficient corporate governance model.








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Governance















Annual review of director interests, time commitment and fees Consistent with its terms of reference, the Committee completed its annual review of the Directors interests to ensure any conflicts are managed appropriately and
in compliance with CRD IV requirements. The time commitments of the Directors were also reviewed to ensure Directors have sufficient time available to discharge their responsibilities and to be effective members of the Board. Priorities for 2017 Our priorities for 2017 will include focus on progressing
Board effectiveness actions, the focus of which is our efficiency. This forms part of our wider commitment to continuous improvement and in pursuit of our ambition to be the best governed bank.














|                              |  |                              
|----------------------------- |  | -----------------------------
|Female Board members          |  | Independent Board members    
|                              | 
|December 2016(1)              |  | December 2016(1)             
|31%(4/13)                     |  | 54%(7/13)                    
|(1) No change from prior year |  | (1) No change from prior year





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| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 





Board Risk Committee Chairs report

The Committee supports the Board in ensuring that the business

operates within agreed Risk Appetite while taking
account of emerging risks.

Our risk management processes continue to improve

through the rigorous application of an effective

enterprise-wide Risk Framework.



LOGO

Ed Giera

Board Risk Committee Chair

22 February 2017

LOGO

For Board membership, tenure and attendance see page 158LOGO

For the responsibilities of the Committee see
page 138


Overview of the year During
2016, we continued to assess our performance in the context of the main risks to which we are exposed, through the rigorous application of an effective enterprise wide Risk Framework, and to embed an appropriate risk culture and attitude at all
levels across the business. We considered the impact of numerous different risks on our business and customers through regular updates from different parts of the
business. These have included:  
The macroeconomic environment, and in particular, the impact of interest rates decreasing and remaining low for longer  
Management of the significant change agenda which included ensuring ongoing regulatory, or otherwise compulsory, compliance, whilst improving the customer experience  
Financial crime and anti-money laundering detection capabilities  
The resilience of IT systems to cyber risk. Following the result of the EU referendum in June, we also considered the
risks and potential impact to Santander UK of the vote for the UK to leave the EU.
 Membership As noted in last
years report, Annemarie Durbin was appointed to the Committee with effect from 13 January 2016. There have been no other changes to the membership of the Committee during the year and the Committee has accordingly benefited from a period
of consistency as members familiarity with the matters considered by the Committee has grown. I believe that the Committee has an appropriate balance of skills and expertise to carry out its role effectively. The Terms of Reference require the majority of the members to be Independent Non-Executive Directors. This criterion was met throughout the year.
   LOGO








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Meeting our key responsibilities in 2016

How we addressed our key
responsibilities relating to Risk Appetite and the Risk Framework, together with our work on stress testing and individually significant matters, is shown below. For information on our responsibilities relating to risk management and internal
controls see page 145.

Significant areas of focus



|                          |  |                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                         |  |                                                                                                                                                                                                                                                                                                                                              
|------------------------- |  | ---------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                          |  |                                         
|Area of focus             |  | Action taken by the Board Risk Committee |  | Outcome                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                          |  |                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Risk Appetite             |  |                                         |  | We considered changes to the Risk Appetite statement proposed as part of the annual review of Risk Appetite
and recommended a number of changes, proposed by management, to the Board. These included the introduction of a new metric to measure the volatility of the income statement under stressed conditions and a number of changes to credit concentration
limits.                                                                                                                                                                                                                        |  |  
  LOGO                               |  | The annual review of Risk Appetite is firmly embedded in our culture.
 For more on Risk Appetite
see page 40.                                                                                                                                                                                                                                
|                          |  |                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Risk Framework            |  |                                         |  | We considered an independent review of the annual attestations by Executive Committee members to the Chief Risk Officer that risk had been managed
effectively in line with the Risk Framework.                                                                                                                                                                                                                                                                                                                                                                                                   |  |                                        |  | We noted that the attestations provided a reasonable and fair view of how risk had been managed and controlled in line with the Risk Frameworks.                                                                                                                                                                                             
|                          |  |                                         |  | We noted that good progress had been made on the design, implementation and governance of the Risk Framework,
whilst acknowledging that there was still more to do to embed effective risk management in all areas. Particular areas of priority focus included Global Corporate Banking, operational risk, and IT, together with conduct risk in Commercial Banking
and Global Corporate Banking. Other areas for specific attention included risk culture, regulatory projects, stress testing, financial crime, retail credit systems, strategic risk, reputational risk and horizon scanning. |  |  
  LOGO                               |  | We monitored progress towards embedding effective risk management through frequent updates from management,
providing challenge and support as necessary.  For more on Risk
Framework see pages 33-39.                                                                                                                                       
|                          |  |                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Stress testing            |  |  
                                     |  | Stress testing remains a key tool to highlight and manage the impact on capital
and profit and loss in stress scenarios. Methodology, governance arrangements and outputs remain subject to close monitoring by the Committee. We participated fully in the 2016 PRA concurrent stress testing exercise and were engaged throughout the
process, examining the significant drivers while challenging outputs and assumptions.  We sought
confirmation from management in respect of the controls used in the exercise.                                                                            |  |  
 
  
                              |  | We recommended that the Board approve the stress testing submission to the PRA.
 We proposed that the process by which manual data was collected, analysed and managed be documented
to provide greater assurance and transparency.  Management confirmed that they had no specific
concerns in respect of the controls used in the exercise.
|                          |  |                                          |  | LOGO                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |  | For more on stress testing see page 41.
|                          |  |                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Macroeconomic
environment |  |                                         |  | In 2016, we regularly reviewed the impact on net interest income and capital metrics of interest rates
remaining low for a sustained period. We discussed possible management actions to offset the impact, including various aspects of the pricing dynamic of our 1l2l3 World proposition under a comprehensive range of scenarios; increasing the hedging of
interest rate exposure in the pension schemes; and adjusting balance sheet exposure through changes in the ALCO portfolio.                                                                                                        |  |  
  
LOGO                             |  | Our discussions fed into Board deliberations on this subject.
 We requested that further detail of hedging efficiency be included in a future update.
 For more on macroeconomic changes
see page 3.                                                                                                                                         
|                          |  |                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Banking Reform            |  |                                         |  | We reviewed detailed stress analyses and engaged in wide ranging discussions on the risk assessment of the Banking Reform Programme alternatives presented by management.                                                                                                                                                                                                                                                                                                                                                                                                                         |  |                                        |  | We supported managements proposal to amend the Banking Reform Programme in light of the impact on the top risks and mitigating actions following
the UK referendum on EU membership, and continue to oversee the preparation of the detailed implementation plans for related adjustments to the Risk Framework.                            
|                          |  |                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  | LOGO                                    |  | For more on Banking Reform see page 2.                                                                                                                                                                                                                                                                                                       





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| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 





|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Area of focus                                                                                                                                                                                                                                                                                                                                 |  | Action taken by the Board Risk Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  | Outcome                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Global Corporate
Banking model                                                                                                                                                                                                                                                                                                                |  |    Following the work
of an external consultant on a review of the controls and strategic operating model of our Global Corporate Banking business segment in 2015, we monitored progress made by the business on a monthly basis to address their observations and
recommendations. We requested that any issues which threatened the programme be escalated to the Committee. In addition to the monthly progress reports from Global Corporate Banking management, we also requested an update in the fourth quarter from
our consultants on managements progress with the programme. |  |    We noted the progress made to address the
recommendations during the year and provided regular updates to the Board. Further work remains to be done, however, and we agreed that we would continue to monitor progress on a periodic basis in 2017.
    We requested, and received, further
information on managements activities to improve sustainable internal project management capability. 
LOGO
 For more on Global Corporate Banking see page 67 and   page 117.
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|UK referendum on
EU membership                                                                                                                                                                                                                                                                                                                |  |    Following the
result of the EU referendum, we considered the risks and potential impact to Santander UK of the vote for the UK to leave the EU.                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |    We are monitoring closely political, economic and
market developments as they progress, and reviewing the scenario planning, stress testing and assessment of models by management in the context of a potential macroeconomic regime change for the UK economy.
 LOGO
 For more on the impact of the UKs exit from the EU on   our business see page 3.                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                             
|Oversight and advice to the Board on Santander UKs current risk exposure and future risk strategy
During 2016, we reviewed Santander UKs exposure to the risks outlined below and analysed emerging themes, including regulatory, macroeconomic and global risks,
which could affect Santander UKs ability to achieve its strategic goals.
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Risk                                                                                                                                                                                                                                                                                                                                          |  | Action taken by the Board Risk Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  | Outcome                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Credit risk  retail                                                                                                                                                                                                                                                                                                                          |  |    Considered regular
reports on the overall credit quality of retail lending, including the interest-only mortgage portfolio and the Buy-to-let mortgage portfolio. 
   Received updates on the key risks arising from personal and business unsecured loans, overdrafts and credit
cards, and noted that change capacity would be kept under review. 
   Reviewed the London residential mortgages portfolio as well as the performance across unsecured retail credit
portfolios.                                                                                                    |  |    Requested details of progress in respect of
mitigating actions and details of the consequences of systems risks to be highlighted in future updates. 
   Agreed the controls and protections that were in place.
    Requested a workshop on interest-only
mortgages.  LOGO
 For more see page 54.                                                                                                                                                                       
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Credit risk 
corporate and
commercial                                                                                                                                                                                                                                                                                                        |  |    Considered regular
reports on credit quality of real estate lending and more detailed reports on certain other sub-sectors. 
   Reviewed concentration levels, and sector and geographic risk exposures.
    Reviewed credit risk within Global
Corporate Banking and Commercial Banking with a focus on renewables and commodities. 
   Monitored the preparations for implementation of IFRS 9.                                                                                                                                                                                   |  |    Growth in corporate and commercial portfolios and
earnings has been achieved within approved Risk Appetite. 
   Agreed management actions proposed for the care homes sector.
    Preparations for IFRS 9 would continue to
be monitored by the Committee and by the Board Audit Committee. 
LOGO
 For more see page 66.                                                                                                                                                 
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Market risk                                                                                                                                                                                                                                                                                                                                   |  |    Reviewed monthly
analysis of a range of macroeconomic scenarios to assess traded market risk exposure.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |  |    Key risk exposures have remained within Risk
Appetite.  LOGO
 For more see page 81.                                                                                                                                                                                                                                                                                                                                                                                        
|                                                                                                                                                                                                                                                                                                                                              |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|Liquidity risk                                                                                                                                                                                                                                                                                                                                |  |    Reviewed and brought
appropriate oversight to the ILAAP.  
  Reviewed and approved proposals for a diversification in the assets held for liquidity purposes.                                                                                                                                                                                                                                                                                                                                                                                                                         |  |    Recommended to the Board for approval.
 LOGO
 For more see page 90.                                                                                                                                                                                                                                                                                                                                                                                                        





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|---------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Risk             |  | Action taken by the Board Risk Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |  | Outcome                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Capital risk     |  |    Reviewed and brought
appropriate oversight to Santander UKs related risks associated with the ICAAP, the pension deficit, and lower for longer interest rates. 
   Reviewed possible management actions which would mitigate adverse variances arising from lower for longer
interest rates.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |  |    Recommendations for approval made in respect of
ICAAP to the Board based on the capital position over the planning period. 
   Regular updates provided to the Committee.
LOGO
 For more see page 106.                                                                                                                                                                                                                                                                                             
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Pension risk     |  |    Considered the issues in respect of the development
of the pension deficit on both an IAS 19 and funding basis, including the impact on the CET1 capital ratio, and economic capital measures. 
   Reviewed and considered changes to pension accounting liability valuation modelling.
    Regularly monitored utilisation of the
pension Risk Appetite and risk budget in accordance with relevant metrics and increases in market volatility.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |  |    Continued to monitor the impact of sustained low interest rates and the effectiveness of
asset and liability management.  
  Requested an holistic update on pension risk management strategy and governance in the context of the triennial valuation of the defined benefit pension schemes and review of investment policy and contribution policy with the Scheme
Trustees.  LOGO
 For more seep age 110.                                                                                      
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Operational risk |  |    Continued as a
significant area of focus in 2016, with particular emphasis on the mitigation of cumulative risk arising as a result of the high level of change, third party risk management, cyber security, IT resilience and Risk Data Aggregation.
    We requested a review to determine
whether our critical IT systems could meet stringent recovery requirements in the event of an outage. 
   We received regular updates on the Operational Risk Transformation Programme.
    Noted that the investment in digital and
other new products, interaction with third parties as well as cost-saving initiatives, would all impact operational risk. 
   Reviewed the response to a distributed denial of service cyber-attack and proposed improvements to the
communication of incidents of this nature to the Committee members. 
   Monitored ongoing implementation of the new operational risk system.
    Reviewed and discussed the initial
assessment of the potential impact of the new standardised measurement approach for operational risk under consultation by the Basel Committee on operational risk capital on a RWA equivalent basis.
    Reviewed and assessed alternatives for
restructuring Santander UKs Directors and Officers (D&O) insurance coverage following the introduction of the Senior Managers Regime and changes in Banco Santander D&O insurance coverage. |  |    We requested that the Chief Operating Officer attend
our meetings as an observer going forward.  
  Approved the IT Resilience and Cyber Risk Management Plan for recommendation to the Board. 
   We agreed that the first and second line of defence would discuss with the individual business areas how to
take this forward and to propose appropriate alternatives to the Committee. 
   Recommended and oversaw the placement of new D&O insurance policies.
 LOGO
 For more see page 120.
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Conduct risk     |  |    Received reports on the progress of risk culture
initiatives across the business including the relevant behaviours that underpin Simple, Personal and Fair. 
   We assessed Conduct Survey results. This included a review of our strategy to further embed an effective risk
management culture across all business units, functions, and levels of seniority. 
   Maintained oversight of proper conduct risk management for new initiatives including the investment business
of wealth management.     Monitored the
continued activity associated with customer remediation programmes.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |  |    The conduct risk framework which had been developed and implemented in line with regulatory
commitments has now been rolled out.  
  As the focus moves to implementing the business as usual framework, we will continue to monitor culture and behaviours. 
   Considered and approved the 2016 Compliance Monitoring Plan.
LOGO
 For more see page 114.                                                                                                                                        





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| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|--------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Risk            |  | Action taken by the Board Risk Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  | Outcome                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Other key risks |  |    Financial crime risk
 We have reviewed and discussed monthly the financial crime agenda with the MLRO, with particular focus and challenge on ensuring that the risk based approach in upgrading our systems and controls translates into effective prevention of
financial crime.     Regulatory risk
 Reviewed the regulatory agenda and associated impact on our business including the risk associated with simultaneously managing multiple projects. 
   Model risk  Received and considered an update on model risk, including progress on the development of an
inventory of the most material models. We sought assurance in respect of the model control environment, and also requested assurance on the capabilities of models to accommodate a negative interest rate environment in the UK.
    We continue to support the I AM Risk
culture which was introduced in 2012 to reinforce the Risk Framework and highlight that everyone is responsible for managing risk. |  |    First line of defence was asked to provide a view of
financial crime risk exposure and mitigation, and greater accountable executive visibility and sponsorship for the transformation programme and to provide regular updates. 
   Supporting continued investment and prioritisaton proportionate to the increased regulation in 2017 as
financial crime is recognised as a national threat in the UK. 
LOGO
 For more see page 123. 
   Regular and substantive interaction on aspects of the regulatory agenda.
 LOGO
  For more see page 126. 
   Requested a follow-up workshop on material models for Board members.
    Support of the I AM Risk culture which
enables us to keep the management of risk front of mind, with increased use of the I AM Risk portal on our intranet and new mandatory training modules.



Effectiveness of risk management system and internal controls We received updates on the completion by all business units of their Risk and Control Self Assessments. This bottom-up exercise largely highlighted the same risk themes
that had been reported previously, with more specific actions raised to mitigate them. We also received regular reports on the implementation of key risk control
programmes during the course of the year and considered measures and action plans to address exposures related to systems and controls. During the year we also reviewed and approved the Risk Type and Risk Activity Frameworks. Change programme The scale, scope and critical nature of the Change Programme
posed significant risk. We asked to be kept advised of projects which were not carried out in accordance with the prioritisation process. We noted the increased governance and project management resources that had been put in place, and we also
noted the efforts that were being made to reduce the proportion of contractor resource where appropriate to do so and to build internal capabilities. We also encouraged management, when undertaking projects required by the regulators, to seek to
achieve improvements in customer experience as well as regulatory compliance.


Effectiveness of the Committee As noted above, the Committee membership has not changed since January 2016. This period of stability followed a number of membership changes during 2015, which resulted
in a greater diversity of members and, in particular, strengthened our skills and knowledge of IT, cyber and other digital-related risks. We reviewed our Terms of
Reference and recommended changes to ensure alignment with the Senior Managers Regime. Full terms of reference can be found on our website at www.santander.co.uk and
a summary is given on page 138. We receive regular reports on enterprise wide risk, and have received updates on progress from risk owners. As mentioned earlier in
this report, we also requested updates from the external consultants supporting the programme of work following the review of the Global Corporate Banking model. These contributed to the effectiveness of our debate and facilitated effective
challenge by the Committee during the year. In accordance with good governance, the Committees effectiveness was considered as part of the overall external
evaluation of Board effectiveness carried out during the year by an independent external evaluator. The reviews findings and suggested actions were considered
by the Committee in November 2016. Further detail is contained in the Corporate Governance Review within this Annual Report.


In line with an assessment of the forward looking agenda and the Board programme, it has been agreed that the number of
scheduled meetings of the Committee will be reduced to eight in 2017. Priorities for 2017 As a period of continued uncertainty remains following the EU Referendum, we will closely monitor developments that impact our primary risk exposures relating to retail
and commercial credit, interest rates, HPI, and the overall capital and liquidity position of Santander UK. We will continue to monitor our evolving operational risk exposures, including conduct, cyber security, and financial crime risk, which will
be an area of focus as we oversee the ongoing implementation of the financial crime transformation programme. We will also consider proposed changes to pension risk appetite in light of the agreed triennial valuation with the pension trustees; as
well as any amendments to the Risk Framework proposed in the next phase of Banking Reform.








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Annual Report 2016

Governance









Board Audit Committee Chairs report

Our responsibilities include oversight of the integrity of financial reporting and

controls, the effectiveness of our
internal audit function, the relationship with the

external auditor and the adequacy of our whistleblowing arrangements

A year of change of external auditor; an external review

of the internal audit function; PPI provisioning;

preparation for the implementation of IFRS 9; and

improved arrangements relating to whistleblowing.



LOGO

Chris Jones Board Audit
Committee Chair 22 February 2017    LOGO

For Committee membership, tenure and
attendance see page 158LOGO

For the responsibilities of the Committee
see page 138


Overview of the year During 2016
the principal activities of the Committee included: 
Oversight of the transition to a new external auditor, PricewaterhouseCoopers LLP (PwC) 
Monitoring the provision of other professional services provided by the new external auditor, those provided by their predecessor, as well as those of our Ring-Fencing Independent Expert 
Overseeing the performance of the Internal Audit function, including the outcome of a triennial review of the function by the PRA 
Reinforcing accountability amongst management for addressing Internal Audit recommendations 
Assuming lead responsibility for objective setting and performance evaluation of the Head of Internal Audit 
Improving interaction between the Committee and the Banco Santander Audit Committee (the Audit Committee of our parent Company) 
Providing oversight on the effectiveness of financial reporting controls 
Assessing the appropriateness of key management judgements, including PPI provisioning, refinements to the pensions methodology and the assumptions underpinning the retail provisioning model, as well as preparation for
the implementation of IFRS 9
 
Overseeing the Companys whistleblowing arrangements and further enhancements following implementation of new FCA whistleblowing rules 
Obtaining further comfort from management and Internal Audit on Risk-weighted assets (RWAs) in the light of the latest guidance from the Institute of Chartered Accountants in England and Wales (ICAEW). We have also addressed the other responsibilities delegated to the Committee by the Board. Membership I welcome Annemarie Durbin who joined the Committee on
13 January 2016, and brings further extensive banking and corporate governance experience to the Committee. At 31 December 2016, six out of seven members
of the Committee were Independent Non-Executive Directors. In accordance with the Revised Statutory Audit Directive, the Board satisfied itself that at least one member of the Committee had competence in accounting and auditing, and the members of
the Committee as a whole had competence in the banking sector, in which the Company is operating. In respect of the requirements of Rule 10A-3 under the US Securities Exchange Act, we met the necessary requirements of independence throughout the
year.
   LOGO








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Report |  | Remuneration
Report |  | Directors Report |  | 





Significant financial reporting issues and judgements

The use of assumptions
or estimates and the application of management judgement is an essential part of financial reporting. In 2016, we focused on the following significant reporting matters in relation to financial accounting and disclosures:



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|Financial reporting
issue or judgement                                                                                                                                                                                                 |  | Action taken by the Board Audit Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Outcome                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
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|Conduct provisions
The provision for conduct remediation activities for PPI and other retail products continues to be highly judgemental and requires significant assumptions including claim
volumes, uphold rates and redress costs. |  |    Continued to
scrutinise the level and adequacy of conduct remediation provisions and challenged the reasonableness of managements assumptions throughout the year 
   In respect of PPI, the Committee: 
   Analysed the judgements and estimates in respect of the provision considering managements assumptions in
relation to changes in claim volumes, uphold rates and the average cost of redress 
   Reviewed FOS referral rates and trends, provision utilisation, the latest complaints inflow forecasts, and how
reasonable high and low end scenarios had been determined in order to assess the range of reasonable possible future costs 
   Debated proposed additional provisions and whether the assumptions made and analysis performed by management
was appropriate     In August 2016, the
FCA published a consultation paper that recommended a two-year time bar period on claims starting in June 2017, which is later than the proposal from November 2015, and profit share in relation to Plevin claims. We challenged managements
assumptions regarding the appropriateness of the provision in light of the delay in the introduction of the time bar. We also challenged managements basis for providing at the year-end in advance of finalisation of the FCAs consultation
paper.     In respect of Wealth &
Investment, the Committee:     Analysed
the judgements and estimates in respect of the provision taking into account customer communications, acceptance of offers made and average redress paid 
   Evaluated the progress of customer communication exercises, provision utilisation, and the latest complaints
inflow forecasts in order to assess the range of reasonable possible future costs. |  |    Requested and received a report on the total amount
the industry had paid out for PPI conduct remediation, to satisfy ourselves of the reasonableness of the provision compared to our peers. 
   Agreed with managements judgement on the level of conduct provisions, including for PPI and Wealth &
Investment products, and the approach to conduct remediation disclosures. 
   Endorsed managements recommendation that additional charges of £144m should be made for PPI.
    We will continue to monitor closely any
changes in customer or claims management companies behaviour in light of the proposed revised PPI time-bar and profit share in relation to Plevin claims. 
   We will monitor the final outcome of the FCAs consultation process.
 LOGO
 See Critical accounting policies in Note 1 to the Consolidated Financial Statements 
LOGO
 For more, see Note 33 to the Consolidated Financial Statements
|                                                                                                                                                                                                                                       |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Retail credit provisions
Determining the appropriateness of retail credit provisions, especially those relating to the mortgage portfolio, remains one of the most significant areas of management
judgement.                          |  |    Reviewed detailed reports from management throughout
the year analysing the proposed provisions. Our discussions included a focus on HPI growth and its potential impact on the mortgage provision models 
   Considered reports on refinements to the assumptions underpinning the mortgage provision models and the
impacts on the level of provisions required  
  Noted that the level of retail credit provisions continued to fall during the year due to continued rises in house prices improving the value of our collateral and economic conditions further reducing our incurred losses
    Discussed the potential impact of the UK
vote to leave the EU on the housing market in the months following the result of the EU referendum. We noted that any future movement in house prices would flow into the mortgage provision models once they were incurred and recognised the
requirements of the current accounting standards in this regard.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |  |    Agreed with managements judgement on the level of retail credit provisions, concluding
that provisions remain robust and assumptions made by management were appropriate 
   We will continue to monitor closely retail credit provisions to assess any impact of changes in economic
circumstances.  LOGO
 See Critical accounting policies in Note 1 to the Consolidated Financial Statements 
LOGO
 For more, see Note 15 to the Consolidated Financial Statements                                                                                                                                                                                                                                                                                                                                                                                                                                                                 





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Annual Report 2016

Governance













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|Financial reporting
issue or judgement                                                                                                                                                                                                                                                                                                     |  | Action taken by the Board Audit Committee                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Outcome                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
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|Corporate credit
provisions Determining the appropriateness of corporate credit provisions is highly judgemental requiring management to make a number of
assumptions.                                                                                                                                                                     |  |    Reviewed detailed
reports from management on credit provisions relating to corporate lending portfolios throughout the year to satisfy ourselves that any impairment triggers had been correctly identified
    Discussed exposures to the oil & gas,
mining and healthcare sectors and satisfied ourselves that there had been no impairment triggers during the year that warranted any significant adjustment to provision levels.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |    Agreed with managements judgement on the level
of corporate credit provisions, concluding that provisions remain robust and managements assumptions were appropriate. 
   We will continue to monitor closely corporate credit provisions to assess any impact of changes in economic
circumstances.  LOGO
 See Critical accounting policies in Note 1 to the Consolidated Financial Statements 
LOGO
 For more, see Note 15 to the Consolidated Financial Statements                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
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|Pension obligations
Significant management judgement is required on financial and demographic assumptions such as mortality, discount rates, inflation rates and pension increases.
 Actuaries are engaged to help assess pension obligations because of the complex nature of the
calculations, but outcomes remain inherently uncertain. |  |    Reviewed detailed reports throughout the year on the
key assumptions underlying the calculation of the defined benefit pension obligations. We noted that the calculations continue to be prepared with the assistance of actuarial advisers and when assessing our pension obligations recognised that,
although some of the assumptions were based on observable data, there remained others that require significant management judgement, such as mortality, discount rates, inflation rates and pension increases
    Analysed and debated the change in
methodology during the year to derive:  
  The discount rate assumption for IAS 19 purposes, to better reflect managements estimate of long-dated credit risk implied in bond yields appropriate for the cash flow liabilities of the scheme
    The inflation rate assumption, moving to
a scheme cash flow-derived inflation rate to bring consistency with the discount rate, and changing the inflation premium from a static measure to a variable measure based on the nominal level of implied inflation
    Noted that no changes were proposed in
respect of mortality assumptions.  
  Noted that the revised inputs and related models had been subject to our pensions governance framework 
   Monitored the continued appropriateness of the methodology and reviewed the inflation, discount and mortality
rates applied at the year-end. |  |    Sought and was provided with clarification on the rationale for, and regulatory capital
impact of, the changes to the methodology to derive the discount and inflation rate assumptions. 
   Agreed with managements approach to the assumptions applied, including changes made to assumptions
during the year.     Endorsed the
proposed quantitative and qualitative disclosures in respect of pension obligations, including disclosures around the methodology changes at the end of the year. 
   Noted that, due to the significant impact that actuarial assumptions have on the pension assets and
liabilities recognised on the balance sheet, and ongoing changes in demographic and financial factors, pensions will remain a key area of focus. 
LOGO
 See page 113 for case study on our pension assumptions review 
LOGO
 See Critical accounting policies in Note 1 to the Consolidated Financial Statements 
LOGO
 For more, see Note 34 to the Consolidated Financial Statements

The Committees focus has been on areas of significant judgement, being those which pose the greatest risk of a material misstatement
to the financial statements. In addition to the areas of significant judgement set out above, the Committee also considers other higher risk items. During 2016, these included the valuation of financial instruments (including fair value
adjustments), hedge accounting, transactions with related parties and the identification and assessment of risks of material misstatement due to fraud or error. For financial instruments held at fair value, we noted the enhancement of the
methodology for valuing uncollateralised derivative portfolios to include a funding fair value adjustment, in line with most UK peers; see Note 43 to the Consolidated Financial Statements. Regular reports have also been provided considering any
material litigation cases and their progress.





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External Auditors Audit tender and new External Auditors In 2015, Banco Santander took the decision to re-tender the global external audit and the Committee
performed its own UK review of the three firms selected by Banco Santander, in support of this. Following the conclusion of the review and with a recommendation from the former chair of the Committee, Banco Santander confirmed that PwC would become
global External Auditors for the accounting period from 1 January 2016. The Board recommended PwCs appointment as the Companys External Auditors, and this was approved at our 2016 AGM. The independence of PwC was monitored and considered prior to their appointment as External Auditors, and this monitoring continued after their appointment and throughout
2016. Oversight of the relationship with our External Auditors As part of our review of our relationship with our External Auditors, PwC, our activities included:  
Consideration of their work and opinion relating to management judgements, where there were no significant changes in view from that of their predecessors  
Review of the summary of misstatements not corrected by management; the Committee was satisfied that they were not quantitatively or qualitatively material, both individually and in the aggregate  
Discussion with the External Auditors regarding the level of disclosure in the Annual Report and Half Yearly Financial Report to satisfy ourselves that it is appropriate  
Discussion regarding developments in financial reporting including changes to accounting standards, statute and best practice  
A review of reports received from Deloitte, the previous External Auditors and PwC on weaknesses and recommendations on internal control and financial reporting matters identified during the course of their audits and
their view of managements progress in resolving them  
Interactions, including meetings in private session during each Committee meeting, and at other times throughout the year. Based on the above inputs, which were captured in a formalised assessment, we satisfied ourselves as to the rigour and quality of PwCs audit process.


Non-audit fees We have a policy on non-audit services which are provided by our External Auditors, which was updated in 2016 in the context of the Revised Ethical Standard issued by the
FRC on auditor independence requirements resulting from the new European Audit Regulation and Directive. Non-audit services were under continuous review throughout
2016 to determine whether they were permitted by reference to their nature, assessing potential threats and safeguards to auditor independence as well as the overall ratio of audit to non-audit fees. All individual assignments require advance approval, either by the Chair under delegated authority for amounts under £250,000 or, if larger, by the full Committee.
This process is in addition to the requirement for all non-audit fees to be approved by the Banco Santander Audit Committee. The principal area of non-audit fees
performed by PwC, other than those related to comfort letters on debt issuance, was in relation to testing the close out of recommendations in respect of a controls review which they had started prior to being appointed our External Auditors. The
costs during the year were £3.2m and we ensured that this met both the external and internal tests for maintaining their independence. We also monitored:  
The non-audit fees and independence of Deloitte LLP, and will continue to do so until they achieve independence, and  
Other fees in respect of work performed by Ernst & Young, our appointed Independent Expert in the context of the Ring Fencing requirements of Banking Reform.


Internal control The Board Risk
Committee has overall responsibility for the effectiveness of the internal control systems. However, due to the nature of internal control matters, there is a natural overlap in responsibilities with those of this Committee. We recognise that a
robust framework of internal control is essential for a complex and changing business environment. We have a comprehensive internal control framework in place, and, during the course of the year, we received and considered regular reports regarding
the operation of and continued enhancement to this framework. This included reports from Internal Audit and the External Auditors and related actions being taken by management. During 2016, the regular reports from Compliance on matters such as key
conduct and non-financial regulatory risks migrated to the Board Risk Committee in line with the responsibilities as codified by the Senior Managers Regime. Finance continues to provide updates to this Committee on internal controls over financial
reporting. Internal control over financial reporting Section 404 of
the Sarbanes-Oxley Act requires management to report on the design and effectiveness of its internal control over financial reporting. Following the adoption in December 2014 of a new framework in this regard (the Committee of Sponsoring
Organizations of the Treadway Commission (COSO) Framework), further enhancements have been made during the last two years to embed the framework. We considered the
financial control environment during the year. The Committee received regular reports on internal control over financial reporting, including key systems and provided feedback on remediation and overall improvements required to ensure that they were
appropriately designed and operating effectively. This included a focus on management actions relating to IT user access controls. We also reviewed actions taken by
management with regard to any control deficiencies identified through the assessment of the effectiveness of internal control over financial reporting. We maintained close oversight of the migration of our internal controls records onto the new
group Operational Risk Management system, details of which are set out on page 122 of the Operational Risk Review.








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Annual Report 2016

Governance













Internal Audit In 2016, the PRA
completed their triennial review of the Internal Audit function which recognised the significant progress which has been made over the last three years; the outcome of the review was favourable. The two main recommendations of the PRA had previously
been identified by the Committee, and the Internal Audit function was already in the process of addressing them; we have focused particularly on the enhancement of the quality assurance function within Internal Audit and reviewed the calibration of
Internal Audit report ratings. The Committee also keeps under review the conclusions and recommendations of an external benchmarking assessment against industry
leading practice for Internal Audit, which was last carried out in 2015. The Committee considers that the changes made in 2015 as part of our continuous improvement programme, have been embedded during 2016 and have further strengthened the Internal
Audit function. The Committee noted strong engagement between the Internal Audit function and the business during 2016. A further benchmarking review is planned for 2017. The internal audit plan, based on a comprehensive risk assessment, was presented in draft and then final form for challenge and approval by the Committee. The plan has
been updated at regular intervals throughout the year, in response to changes in the business and the regulatory environment, and at the request of the Committee. We
received regular reports from our Head of Internal Audit and monitored findings as part of our oversight. We considered the aggregate number of recommendations, the rationale for any recommendations becoming overdue, and broader root cause analyses.
The Committee also requested that the Head of Internal Audit highlight recommendations becoming due. The Committee has chosen to invite key members of management with past due recommendations to present to it on progress with implementing Internal
Audits recommendations, issues encountered with closing them, key milestones and key dependencies including those relating to Banco Santander. The Committee
received a report on internal audit coverage over RWAs which complemented the work already performed and reported on by the Line 2 function. These reports took into account the latest consultation document prepared by the ICAEW on this topic. During the year, the Committee assumed responsibility for the review and approval of the objectives of the Head of Internal Audit and leads in the annual evaluation of
his performance.


Whistleblowing The Committee
received quarterly reports on the Companys whistleblowing activities. The reporting includes oversight of progress reports and outcomes, as well as root cause analysis and information on identifiable trends, hot spots and any observable risks.
The reporting also covers developments in the regulatory environment and activities to promote and enhancements to the companys whistleblowing arrangements. The Committee considers that the Whistleblowing Policy and training, both enhanced during 2016 following implementation of new FCA rules, and the reporting framework,
play a key role in supporting our culture and behaviours at all levels in the business. The Committee also sees the annual report on whistleblowing which the Board receives and considers. During the year, I continued to act as the Whistleblowing Champion. The purpose of this role is to oversee the independence and effectiveness of the policies and
procedures in this area. The direct engagement of an independent Non-Executive Board Committee Chair in this oversight role underpins confidence in the integrity of our whistleblowing arrangements. Disclosure in the Annual Report We received regular reports from the
Disclosure Committee, a senior executive committee chaired by the Chief Financial Officer. Its remit is to advise the Committee on the completeness and accuracy of disclosures made by Santander UK in its external reporting. This, together with other
reports received during the year, and a review of best practice and the approach of our peers, enabled us to conclude that we were satisfied with the level of disclosure made in this 2016 Annual Report. Management also engaged the Board and
Committee early on the approach to the report which enabled it to provide input into the overall tone and messaging in a timely manner.


The Disclosure Committee also reports on whether the Annual Report is fair, balanced, and understandable and whether it
provides the information necessary for readers to assess Santander UKs position and performance, business model and strategy. In this context, the Disclosure Committee considers and advises us whether:  
Key messages remain consistent throughout the document, relating both to financial performance and progress against strategic objectives  
All key judgements, significant risks and issues are reported and explained clearly and adequately  
There is a clear framework to the document with good signposting and a complete picture of performance and events. We
have worked to further improve our external reporting to align more closely with other UK peers. We have also had due regard to best practice and our relationship with our ultimate parent company, and the requirements of our debt and capital
investors. In addition to the above review process, the Committees assessment of fair, balanced and understandable is underpinned by the understanding it gains
through the reporting of management judgements, internal control matters, internal audit activities and the reports of the External Auditors made to the Committee throughout the year. The Committees assessment also considers the robustness and
outcomes of the assurance, review and verification processes conducted by management and considers whether the key risks reflected those that were of a concern to the Committee and were consistent with those reported by management. Following our
assessment we concluded that the 2016 Annual Report is fair, balanced and understandable.








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Report |  | Remuneration
Report |  | Directors Report |  | 







Financial Reporting Council (FRC) Annual Review of Corporate Reporting 2015/2016 In October 2016, the FRC issued a report entitled Annual Review of Corporate Reporting 2015/2016 which sets out the FRCs assessment of corporate
reporting in the UK based on outreach and evidence from the FRCs monitoring work and thematic reviews. The report outlines the characteristics of corporate reporting which the FRC believe make for a good annual report, beyond basic compliance
with laws and accounting standards. As part of our oversight of this area, we received and reviewed a report from management on its work in respect of the areas of
interest to the FRC. We are satisfied that management has sought to adhere to the characteristics identified by the FRC in the preparation of this Annual Report to the extent appropriate to our ownership structure.


Going Concern We satisfied
ourselves that it is appropriate to use the going concern basis of accounting in preparing the financial statements, supported by a detailed analysis provided to the Committee by senior finance management. As part of the assessment, we considered
whether there are sufficient financial resources, including liquidity and capital, available to continue the operations of the Company. We considered the Companys resilience in the face of stress, prominent events such as the UKs
decision to leave the EU and known future challenges. In making our assessment, we took into account all information of which we were aware about the future, which was at least, but not limited to, 12 months from the date that the balance sheet was
signed.


Effectiveness The Board has
determined that I have the necessary qualifications and skills to qualify as a Board Audit Committee financial expert as defined in Item 16A of Form 20-F and by reference to the NYSE listing standards, based on my professional background as a
senior audit partner at PwC. In my capacity as Committee Chair, consistent with the approach of my predecessor, I meet with key members of the management team and the External Auditor in advance of each Committee meeting. I ensure that the Committee
meets with management, the Internal Auditors and the External Auditors in private session. I also attend meetings with the PRA, the FCA, the FRC and the BBA, both on an individual basis and together with the Chairs of audit committees of other major
UK banks and financial institutions. In accordance with good governance, the Committees effectiveness was considered as part of the overall
externally-facilitated evaluation of Board effectiveness carried out during the year by an independent external evaluator. The reviews findings and suggested
actions were considered by the Committee in December 2016. Further detail is contained in the Corporate Governance Review within this Annual Report. In line with an
assessment of the forward agenda and the Board programme, it has been agreed that the number of scheduled meetings of the Committee will be reduced to eight meetings in 2017. Planned activities for 2017 The specific areas of focus for the Committee for
2017 will be to monitor and keep under review the progress on the implementation of IFRS 9, the level and adequacy of conduct remediation provisions, the approach to pensions assumptions, and the financial control and reporting implications of any
change in the economy, as well as Banking Reform.








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Annual Report 2016

Governance









Board Remuneration Committee Chairs report

The Committee reviews remuneration policies and their implementation

for the long-term success of Santander UK.

Our remuneration structures are designed to incentivise

and reward long-term sustainable
performance.



LOGO

Scott Wheway Board Remuneration
Committee Chair 22 February 2017    LOGO

For Board membership, tenure and
attendance see page 158LOGO

For the responsibilities of the Committee
see page 138


Overview of the year This report
is comprised of three sections:  
My report as Chair of the Committee  
The Remuneration report which summarises our remuneration policies  
The Remuneration implementation report, which shows how these policies have been applied during 2016. During 2016, we
focused on ensuring that our remuneration policy and outcomes are aligned with and support Santander UKs strategic objectives, to drive the Companys long-term success and promote sound and effective risk management.
 In line with our aspiration to be Simple, Personal and Fair, the Committee focused on delivering a reward framework that is
simple to understand, tailored to individual roles and is competitive to attract, retain and motivate employees of the highest calibre. We seek to drive performance to the highest standards, with a key focus on conduct and behaviours in line with
our chosen objectives. A significant proportion of our performance-related pay is deferred over the long-term and remains at risk. In response to
regulatory requirements, we have further strengthened provisions which allow Santander UK to reduce or cancel variable pay awards for up to ten years after they are awarded.
     LOGO








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| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







Key activities in 2016 In 2016,
we completed a comprehensive review of our executive remuneration offering in collaboration with our colleagues on the Banco Santander Remuneration Committee (the Remuneration Committee of our parent company) and finalised the design of a single
variable pay plan to incentivise both sustainable annual and long-term performance and behaviour. Further details of the plan are set out in this report. After
engaging with our colleagues in Risk, we finalised the design and embedded a revised basis of assessment of current and future risks, linked to our Risk Appetite, prior to any award of variable remuneration. We also undertook a full impact analysis of the European Banking Authoritys guidelines on sound remuneration policies under CRD IV, and completed a comparison
against Banco Santander rules currently applicable to Santander UK. Additionally, we provided feedback on the consultation on mandatory gender pay reporting.


Membership I welcome Annemarie
Durbin who joined us on 13 January 2016, and brings a wealth of relevant international banking experience to the Committee. Six of the seven members of the Committee are INEDs. Effectiveness of the Committee In accordance with good governance, the
Committees effectiveness was considered as part of the overall external evaluation of Board Effectiveness carried out during the year by an independent external evaluator. The reviews findings and suggested actions were considered by the Committee in November 2016. Further detail is contained in the Corporate Governance Review within
this Annual Report. Following the review of Board Effectiveness and our continuous review of opportunities for improving effectiveness, changes have been made to the
meeting schedule to optimise efficiency. The Committees terms of reference are kept under regular review. Full terms of reference are available at
www.santander.co.uk. Priorities for 2017 At Santander UK, we are
undergoing a period of further transformation as we implement our plan to achieve the strategic objectives we have set for the three years from 2016 to 2019. We will drive our digital agenda and manage our cost base, as well as prepare for the
regulatory changes of Banking Reform. As we manage our performance, we will continue to focus on driving the right culture and behaviours as well as balancing the needs of our people, our customers, our communities and our shareholders. We will
recognise the increasing competition for talent and the value our people bring to our business.










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Annual Report 2016

Governance









Remuneration report and remuneration policies





Basis of preparation This report
has been prepared on behalf of the Board by the Board Remuneration Committee. We follow UK corporate governance regulations, guidelines and codes to the extent they are appropriate to our ownership structure. Accordingly, a number of voluntary
disclosures relating to remuneration have been presented in this report. Executive remuneration policies and principles Our policies are designed with the long-term success of the business in mind, to deliver our business strategy and reinforce our values. We apply a consistent approach to
the reward of all our employees which upholds our prudent approach to Risk Appetite which is set as part of a Santander UK-wide Risk Management Framework. No individual across Santander UK, including the CEO, are involved in decisions about their
own remuneration.


Forward looking remuneration policies for Executive Directors Our forward looking remuneration policies are outlined in the table below. In 2016 we replaced the annual and long-term incentive arrangements with a single variable pay
plan. This plan rewards financial and non-financial performance over the year with additional long-term metrics applied to the deferred element. Previous awards under the long-term incentive plan will continue to apply in accordance with the plan
rules. Our remuneration structures, which incorporate significant long-term deferral and use of Banco Santander SA shares align the interests of Banco Santanders senior management with shareholders and encourage the building of a long-term
shareholding in Banco Santander SA.


On recruitment When appointing a
new Executive Director, base salary will be positioned at an appropriate level, taking into consideration a range of factors including the individuals previous remuneration, relevant experience, an assessment against relevant comparator groups
and cost. Other elements of remuneration will be established in line with the Remuneration Policy set out in the Executive Directors remuneration structure table below. Relocation support and international mobility benefits may also be
provided.








Executive Directors remuneration structure

Fixed
Pay



|                     |  |                                                                                                                                                                                                                                                                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|-------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                     |  |                                                                                                                                                                                                                                                                                         
|                     |  | Principle and description                                                                                                                                                                                                                                                                |  | Policy                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                     |  |                                                                                                                                                                                                                                                                                         
|Base salary          |  |    Market competitive
pay appropriate for the role.     Fixed
pay is set at a level such that it discourages inappropriate risk taking. 
   Reflects the responsibilities and experience of each individual.                                                                          |  |    Salaries are set to reflect prevailing market and
economic conditions and the approach to pay for all other employees. 
   The Committee considers the results of the annual pay review and, where appropriate, makes recommendations of
changes in base salaries to the Board.                                                                                                                                                                                                                       
|                     |  |                                                                                                                                                                                                                                                                                         
|Pension arrangements |  |    Post-retirement
benefits for participants are offered in a cost-efficient manner.                                                                                                                                                                                                    |  |    All Executive Directors receive a cash allowance
in lieu of pension.                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                     |  |                                                                                                                                                                                                                                                                                         
|Other benefits       |  |    Benefits are offered to Executive Directors as part
of a competitive remuneration package.                                                                                                                                                                                           |  |    Private medical insurance for Executive Directors and their dependants, life assurance and
health screening.     Access to the
Companys all-employee share schemes on the same terms as all UK employees.                                                                                                                                                                                                                                                                                            
|                    
|Variable pay        
|                     |  |                                                                                                                                                                                                                                                                                         
|                     |  | Purpose and link to strategy                                                                                                                                                                                                                                                             |  | Operation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                     |  |                                                                                                                                                                                                                                                                                         
|Variable pay plan    |  |    To motivate Executive Directors to achieve and exceed
annual financial and strategic targets within the Companys Risk Appetite and in alignment with our values. 
   Deferral of part of the annual bonus is applied in accordance with the requirements of the Remuneration
Code. |  |    Awards are discretionary and determined by reference to performance against a scorecard of
financial and strategic goals.     Awards
may be made in cash and shares.  
  Share-based awards are subject to a minimum twelve month retention period following the relevant vesting date. 
   Malus and clawback provisions apply to all elements of variable pay.
    A portion of the deferred element is
subject to further performance testing based on a range of financial and capital metrics.





154Santander UK plc



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| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







Compensation may be provided to Executive Directors recruited externally for the forfeiture of any award on leaving their
previous employer. The Committee retains discretion to make such compensation as it deems necessary and appropriate to secure the relevant Executive Directors employment, and ensure any such payments align with the long-term interests of
Santander UK and the prevailing regulatory framework including the new PRA rules on buy-outs which apply from 1 January 2017. Service
agreements Terms and conditions of employment are set out in individual service agreements which include a notice period of six months from both the Executive
Director and the Company. The agreements may be terminated immediately with payment of fixed pay in lieu of notice. In the event of termination for gross misconduct neither notice nor payment in lieu of notice is required and any deferred awards
fall away. Termination payments The impact of an
Executive Director leaving the Company on remuneration under various scenarios reflects the service agreements and the relevant scheme rules, and the Committees policy in this area. The Committee will determine whether an Executive Director is a good leaver should their employment end due to injury, ill-health, disability, redundancy,
retirement, death, or any other reason at the Committees discretion. Other than a payment in the event of redundancy for the CEO, there are no benefits upon
termination of employment.


Risk and Performance adjustment All variable remuneration is subject to adjustment for all current and future risks as well as, on an individual basis, malus and clawback provisions. Performance
adjustments may include, but are not limited to:  
Reducing a bonus outcome for the current year  
Reducing the amount of any unvested deferred variable remuneration (including historic LTIP awards)  
Requiring repayment on demand (on a net basis) of any cash and share awards received at any time during the seven year period after the date of award  
Requiring a bonus which has been awarded (but not yet paid) to be forfeited. We will continue to ensure that the
requirements of the Remuneration Code are met for our employees. We will prevent vesting of all or part of the amount of deferred remuneration in any of the following circumstances:  
Evidence of employee misbehaviour or material error  
Material downturn in the performance of Santander UK or a relevant business units performance  
Santander UK or a relevant business unit suffers a material failure of risk management  
Significant changes in the Banco Santander SA groups or the Santander UKs economic or regulatory capital base and the qualitative assessment of risks  
A material restatement of Banco Santanders or Santander UKs financial statements (except when required due to modification of the accounting rules).


In such circumstances, the Committee will have full discretion to freeze an award during an ongoing investigation, to
determine the amount of deferred remuneration that will not vest or to extinguish an award altogether. In 2016, we updated the process for determining whether or not
any remuneration adjustment should be applied to an individuals remuneration to include the introduction of a matrix to consistently calibrate risk events.








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Annual Report 2016

Governance









Remuneration implementation report





Introduction This report
outlines how our Remuneration Policy was implemented in 2016. The composition and total remuneration received by each Executive Director who held office during the
year is shown in the table below. Variable pay plan The 2016 variable pay
plan for Executive Directors was determined under distinct criteria (explained further below):  
A quantitative assessmentmeasured at UK level using a balanced scorecard approach. This included metrics in relation to our customers, our colleagues and the communities in which we do business, plus risk,
capital and profitability.  
A qualitative assessment of performance which adjusted the balanced scorecard result by reference to a range of measures relating to our people, shareholders, customers and communities.  
A group multiplierwhich can adjust the pool upwards or downwards to reflect overall group performance.  
Exceptional adjustment applied (if required) at year-end to cover unexpected factors. This may also include adjustments not covered in the qualitative assessments, including major risk events.



Finally, an overall UK-focused risk adjustment linked to Santander UKs Risk Appetite is applied. This provided both a formula-based assessment against Risk Appetite and an additional qualitative risk event
assessment overlay that could only result in downward risk adjustment of up to 100% of the bonus pool or individual awards. Rewarding Executives
appropriately The Committee reviews pay and reward annually and takes account of the remuneration trends elsewhere, including the relationship between Executive
Director remuneration and the remuneration of other Santander UK employees. The Committee is also responsible for overseeing the salary and variable pay awards for all material risk takers and approving the design of any material performance-related
pay plans operated by Santander UK. As part of our monitoring of pay across the Company, the Committee regularly reviews:  
Santander UKs engagement with its recognised trade unions on matters relating to pay and benefits for all employees  
Annual pay reviews for the general employee population  
Santander UK group-wide benefit provisions  
The design of, the monitoring of and the overall spend on annual incentive arrangements



Performance related pay plans to ensure they are deferred appropriately and remain at risk over an appropriate period. Stakeholder views Santander UK consults with key stakeholders, including its
main regulators, the PRA and the FCA. Employee opinion surveys are undertaken annually on employee engagement, and discussion on remuneration matters generally takes place with union representatives during the annual pay review cycle and on relevant
employee reward matters.








Executive Directors remuneration(audited)

Total remuneration of each
Executive Director for the years ended 31 December 2016 and 2015



|                                     |  |                   |       |  |                     |  |       |               |  |  |           |  |  |           |       |  |           |  |   |           |  |  |          |  |  |  |       |  |  |  |       | 
|------------------------------------ |  | ----------------- | ----- |  | ------------------- |  | ----- | ------------- |  |  | --------- |  |  | --------- | ----- |  | --------- |  | - | --------- |  |  | -------- |  |  |  | ----- |  |  |  | ----- | 
|Executive rewards                    |  | Nathan Bostock(1) |       |  | Stephen Jones(2)(3) |  |       | Steve Pateman |  |  | Total     | 
|                                     |  | 2016
£000         |       |  | 2015
£000           |  |       | 2016
£000     |  |  | 2015
£000 |  |  | 2016
£000 |       |  | 2015
£000 |  |   | 2016
£000 |  |  | 2015£000 | 
|Salary                               |  |                   | 1,600 |  |                     |  | 1,601 |               |  |  | -         |  |  |           | 460   |  |           |  | - |           |  |  | 527      |  |  |  | 1,600 |  |  |  | 2,588 | 
|Taxable benefits (cash and non-cash) |  |                   | 46    |  |                     |  | 37    |               |  |  | -         |  |  |           | 1     |  |           |  | - |           |  |  | 1        |  |  |  | 46    |  |  |  | 39    | 
|Pension                              |  |                   | 560   |  |                     |  | 560   |               |  |  | -         |  |  |           | 161   |  |           |  | - |           |  |  | 181      |  |  |  | 560   |  |  |  | 902   | 
|Bonus (paid and deferred)            |  |                   | 2,330 |  |                     |  | 1,760 |               |  |  | -         |  |  |           | 848   |  |           |  | - |           |  |  | -        |  |  |  | 2,330 |  |  |  | 2,608 | 
|Total                                |  |                   | 4,536 |  |                     |  | 3,958 |               |  |  | -         |  |  |           | 1,470 |  |           |  | - |           |  |  | 709      |  |  |  | 4,536 |  |  |  | 6,137 | 
|LTIP realised                        |  |                   | -     |  |                     |  | -     |               |  |  | -         |  |  |           | -     |  |           |  | - |           |  |  | -        |  |  |  | -     |  |  |  | -     | 
|Total remuneration                   |  |                   | 4,536 |  |                     |  | 3,958 |               |  |  | -         |  |  |           | 1,470 |  |           |  | - |           |  |  | 709      |  |  |  | 4,536 |  |  |  | 6,137 | 
|LTIP granted                         |  |                   | -     |  |                     |  | 240   |               |  |  | -         |  |  |           | -     |  |           |  | - |           |  |  | -        |  |  |  | -     |  |  |  | 240   | 



|(1) | The salary figure for Nathan Bostock does not include £1,800,000 (2015: £1,800,000) relating to a buy-out of deferred performance-related programmes in respect of his previous employment.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Remuneration for Stephen Jones in 2016 does not include £354,138 (2015: £nil) relating to outstanding deferred bonus awards he received in 2012 to 2014 that did not lapse upon his resignation from the
Company in December 2015 and were paid to him in 2016 subject to regulatory rules on performance adjustment and certain criteria being met.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | The salary figure for Stephen Jones does not include £nil (2015: £1,276,218) relating to a buy-out of deferred performance-related programmes in respect of his previous employment.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





156Santander UK plc



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| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







Policy for all employees Our
performance, reward and benefits approach supports and drives our business strategy and reinforces our values in the context of a clearly articulated Risk Appetite. We apply a consistent approach to reward for all employees. Employees are entitled
to a base salary and benefits, and have the opportunity to receive an element of performance-related compensation, subject to their role and reward band. The maximum opportunity of performance-related compensation available is based on the seniority
and responsibility of the role. Relative importance of spend on pay The
table below sets out the amounts and percentage change in profit and total employee costs for 2016 and 2015.   Relative importance of spend on pay2016
£m


2015
£m


Change
%Profit before tax


1,917



1,345



42.5%Total employee costs


1,122



1,115



0.6%


External consultants In carrying
out their responsibilities, the Committee seeks independent external advice as necessary. During 2016, the Committee sought advice and assistance from Kepler, a brand of Mercer LLC, on all remaining matters pertaining to 2015 and Deloitte on all
matters pertaining to 2016. Fees (exclusive of VAT) for services provided during the financial year did not exceed £237,000 for Deloitte and £68,000 for Kepler.


Chair and Non-Executive Directors remuneration The Chairs fee is reviewed and approved by the Committee. The fees paid to Non-Executive Directors are reviewed and approved by the Executive Directors and the
Chair. Fees are reviewed annually taking into account information on fees paid in similar companies, as well as the time commitment for the role. Non-Executive Directors are paid a base fee, with an additional supplement for serving on or chairing a
Board Committee. The fee policy is reviewed annually. No changes were made during 2016. The 2016 fee structure is shown in the table below. All Non-Executive Directors and the Chair serve under letters of appointment and either party can terminate on three months written notice, except in the case of
the Chair where twelve months written notice is required. Neither the Chair nor the Non-Executive Directors have the right to compensation on the early termination of their appointment beyond payment in lieu of notice at the option of the
Company. In addition, neither the Chair nor the Non-Executive Directors are eligible for pension scheme membership, bonus or incentive arrangements.










Highest paid senior executives

The remuneration of the eight highest paid senior executives for the year ended 31 December 2016 is detailed below. Senior executive officers are defined as members
of the Executive Committee (excluding Executive Directors).



|                                        |  |        |       |  |        |  |       |        |  |  |        |  |  |        |       |  |        |  |       |        |  |  |        |  |  |  |       |  |  |  |     | 
|--------------------------------------- |  | ------ | ----- |  | ------ |  | ----- | ------ |  |  | ------ |  |  | ------ | ----- |  | ------ |  | ----- | ------ |  |  | ------ |  |  |  | ----- |  |  |  | --- | 
|Individuals                             |  | 1
£000 |       |  | 2
£000 |  |       | 3
£000 |  |  | 4
£000 |  |  | 5
£000 |       |  | 6
£000 |  |       | 7
£000 |  |  | 8
£000 | 
|Fixed remuneration (including any       |  |        | 1,354 |  |        |  | 387   |        |  |  | 722    |  |  |        | 716   |  |        |  | 738   |        |  |  | 609    |  |  |  | 506   |  |  |  | 645 | 
|non-cash and taxable benefits)          |  |        |       |  |        |  |       |        |  |  |        |  |  |        |       |  |        |  |       |        |  |  |        |  |  |  |       |  |  |  |     | 
|Buy-out award(1)                        |  |        | -     |  |        |  | 635   |        |  |  | -      |  |  |        | -     |  |        |  | -     |        |  |  | -      |  |  |  | 215   |  |  |  | -   | 
|Variable remuneration (cash  paid)     |  |        | 424   |  |        |  | 172   |        |  |  | 270    |  |  |        | 187   |  |        |  | 155   |        |  |  | 173    |  |  |  | 125   |  |  |  | 133 | 
|Variable remuneration (cash  deferred) |  |        | 636   |  |        |  | 258   |        |  |  | 405    |  |  |        | 280   |  |        |  | 233   |        |  |  | 260    |  |  |  | 188   |  |  |  | 200 | 
|2016 remuneration                       |  |        | 2,414 |  |        |  | 1,452 |        |  |  | 1,397  |  |  |        | 1,183 |  |        |  | 1,126 |        |  |  | 1,042  |  |  |  | 1,034 |  |  |  | 978 | 
|LTIP                                    |  |        | -     |  |        |  | -     |        |  |  | -      |  |  |        | -     |  |        |  | -     |        |  |  | -      |  |  |  | -     |  |  |  | -   | 

|(1) | Buy-out of deferred performance related payments in connection with previous employment.
|--- | ----------------------------------------------------------------------------------------



|                                      |  |              |     |  |                           |  |    |                            |  |  |                                   |  |  |                                 |    |  |  |  |   | 
|------------------------------------- |  | ------------ | --- |  | ------------------------- |  | -- | -------------------------- |  |  | --------------------------------- |  |  | ------------------------------- | -- |  |  |  | - | 
|Chair and Board Committee member fees |  | Board
 
£000 |     |  | Board
Risk Committee
£000 |  |    | Board
Audit Committee
£000 |  |  | Board
Remuneration Committee
£000 |  |  | Board
Nomination Committee
£000 |   
|Chair (inclusive of membership fee)   |  |              | 650 |  |                           |  | 60 |                            |  |  | 60                                |  |  |                                 | 60 |  |  |  | - | 
|Senior Independent Director           |  |              | 30  |  |                           |  | -  |                            |  |  | -                                 |  |  |                                 | -  |  |  |  | - | 
|Member                                |  |              | 90  |  |                           |  | 25 |                            |  |  | 25                                |  |  |                                 | 25 |  |  |  | - | 





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Annual Report 2016

Governance









Board and Committee

membership, tenure, attendance, and remuneration







|                                                  |  |     |  |            |                   |   |           |        |             |  |    |  |  |  |          |  |  |                      |    |  |             |  |   |            |  |              |   |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 
|------------------------------------------------- |  | --- |  | ---------- | ----------------- | - | --------- | ------ | ----------- |  | -- |  |  |  | -------- |  |  | -------------------- | -- |  | ----------- |  | - | ---------- |  | ------------ | - |  | ------------ | ---------------------- |  |  | -- |  |  |  | -- |  |  |  |  | 
|                                                  |  |     |  |            |                   |   |           |        | Board       |  |    |  |  |  |          |  |  | Board Risk Committee |    |  |             | 
|                                                  |  |     |  |            |                   |   |           |        |             |  |    |  |  |  |          |  |  |                      |    |  |             | 
|                                                  |  |     |  |            |                   |   |           |        |             |  |    |  |  |  |          |  |  | Unscheduled          |    |  |             |  |   |            |  |              |   |  |              |                        |  |  |   
|                                                  |  |     |  |            |                   |   |           |        | Meetings    |  |    |  |  |  |          |  |  | meetings             |    |  | Unscheduled |  |   |            |  | Meetings (9) |   |  |              |                        |  |  |   
|                                                  |  |     |  | Appointed  |                   |   | Tenure to |        | eligible to |  |    |  |  |  | Meetings |  |  | eligible to          |    |  | meetings    |  |   | Membership |  | eligible to  |   |  | Meetings (9) |                        |  |  |   
|Name                                              |  | Age |  | (Resigned) |                   |   | year-end  |        | attend      |  |    |  |  |  | attended |  |  | attend               |    |  | attended    |  |   | tenure     |  | attend       |   |  | attended     |                        |  |  |   
|Chair                                             | 
|Shriti
Vadera(1)                                  |  | 54  |  |            | 01.01.15          |   |           | 2y     |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 6 |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 
|Independent Non-Executive
Directors               | 
|Scott
Wheway(2)                                   |  | 50  |  |            | 01.10.13          |   |           | 3y 3m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 5 |  |              | LOGO
 3y               |  |  | 12 |  |  |  | 12 |  |  |  |  | 
|Ed Giera                                          |  | 54  |  |            | 19.08.15          |   |           | 1y 4m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 6 |  |              | LOGO
 1y 2mLOGO
 1y 4m |  |  | 13 |  |  |  | 13 |  |  |  |  | 
|Chris
Jones(3)                                    |  | 60  |  |            | 30.03.15          |   |           | 1y 9m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 6 |  |              | LOGO
 1y 9m            |  |  | 13 |  |  |  | 13 |  |  |  |  | 
|Alain Dromer                                      |  | 62  |  |            | 01.10.13          |   |           | 3y 3m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 6 |  |              | LOGO
 1y 1m            |  |  | 12 |  |  |  | 12 |  |  |  |  | 
|Annemarie Durbin                                  |  | 53  |  |            | 13.01.16          |   |           | 11m    |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 5 |  |              | LOGO
 11m              |  |  | 12 |  |  |  | 12 |  |  |  |  | 
|Genevieve Shore                                   |  | 47  |  |            | 18.05.15          |   |           | 1y 7m  |             |  | 10 |  |  |  |          |  |  |                      | 8  |  |             |  | 6 |            |  |              | 5 |  |              | LOGO
 1y 4m            |  |  | 12 |  |  |  | 10 |  |  |  |  | 
|Banco Santander nominated
Non-Executive Directors | 
|Ana Botín                                         |  | 56  |  |            | 01.12.10          |   |           | 6y 1m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 2 |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 
|Bruce Carnegie-Brown                              |  | 57  |  |            | 01.10.12          |   |           | 4y 3m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 5 |  |              | LOGO
 4y 3m            |  |  | 12 |  |  |  | 12 |  |  |  |  | 
|Juan Rodríguez Inciarte(4)                        |  | 64  |  |            | 01.12.04          |   |           | 12y 1m |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 5 |  |              | LOGO
 1y 4m            |  |  | 13 |  |  |  | 12 |  |  |  |  | 
|Peter Jackson                                     |  | 41  |  |            | 01.04.16          |   |           | 9m     |             |  | 7  |  |  |  |          |  |  |                      | 7  |  |             |  | 5 |            |  |              | 5 |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 
|Manuel Soto                                       |  | 76  |  |            | 01.11.13          |   |           | 3y 2m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 6 |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 
|José María Fuster                                 |  | 58  |  |            | 01.12.04(01.04.16 | ) |           | 11y 4m |             |  | 3  |  |  |  |          |  |  |                      | 3  |  |             |  |  |            |  |              |  |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 
|Executive
Directors                               | 
|Nathan Bostock                                    |  | 56  |  |            | 19.08.14          |   |           | 2y 4m  |             |  | 10 |  |  |  |          |  |  |                      | 10 |  |             |  | 6 |            |  |              | 6 |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 
|Total                                             |  |     |  |            |                   |   |           |        |             |  |    |  |  |  |          |  |  |                      |    |  |             |  |   |            |  |              |   |  |              |                        |  |  |    |  |  |  |    |  |  |  |  | 



|(1) | Appointed Chair on 30 March 2015.
|--- | ---------------------------------

|(2) | Senior Independent Director since 18 May 2015.
|--- | ----------------------------------------------

|(3) | Deemed financial expert.
|--- | ------------------------

|(4) | Deputy Chair.
|--- | -------------

(5) Non-Executive Directors are reimbursed for any expenses incurred in performing their role and any
related tax cost on

such reimbursement.

(6) In addition to the above fees, Shriti
Vadera was entitled to taxable benefits as follows: private medical cover of

£588 (2015: £413) and transportation of £29,149 (2015:
£21,544).

(7) Expenses for Chris Jones includes reimbursement of expenses and related tax costs incurred to preserve the independence

of the external auditors upon their appointment arising from a previous relationship.

(8) Information presented for Santander UK plc.

(9) Includes ad hoc meetings.





158Santander UK plc



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| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 











| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  |             |              |  |   |      |  |  |          |  |  |       |      |  |       |  |     |  |  |  |       |  |  |  |       | 
| |  | ----------------------- |  | ------------ | ---------------------------- |  | ------------ | -------------------------- | -- | ---------- | --------------------------------------- | ------------------- |  |  | ------------ |  |  | ---------- | -- | ------------ |  | ----------- | ------------ |  | - | ---- |  |  | -------- |  |  | ----- | ---- |  | ----- |  | --- |  |  |  | ----- |  |  |  | ----- | 
| |  | Board Audit Committee   |  |              | Board Remuneration Committee |  |              | Board Nomination Committee |    |            | Total Non-Executive fees (audited)(5-8) |                    
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                    
| |  |                         |  | Meetings (9) |                              |  |              |                            |    |            |                                         | Meetings (9)        |  |  |              |  |  |            |    | Meetings (9) |  |             |              |  |   |      |  |  |          |  |  | 2016  |      |  | 2015  | 
| |  | Membership              |  | eligible to  |                              |  | Meetings (9) |                            |    | Membership |                                         | eligible to         |  |  | Meetings (9) |  |  | Membership |    | eligible to  |  |             | Meetings (9) |  |   |      |  |  |          |  |  | Total |      |  | Total | 
| |  | tenure                  |  | attend       |                              |  | attended     |                            |    | tenure     |                                         | attend              |  |  | attended     |  |  | tenure     |    | attend       |  |             | attended     |  |   | Fees |  |  | Expenses |  |  | £000  |      |  | £000  | 
| | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  | LOGO
 2y    |              |  | 5 |      |  |  | 5        |  |  |       | 650  |  |       |  | -   |  |  |  | 650   |  |  |  | 650   | 
|
| | 
| |  | LOGO
 1y 4m             |  |              | 13                           |  |              |                            | 11 |            |                                         | LOGO
 1y 4mLOGO
 3y |  |  | 11           |  |  |            | 11 |              |  | LOGO
 3y    |              |  | 5 |      |  |  | 5        |  |  |       | 230  |  |       |  | 14  |  |  |  | 244   |  |  |  | 189   | 
| |  | LOGO
 1y 4m             |  |              | 13                           |  |              |                            | 13 |            |                                         | LOGO
 1y 4m         |  |  | 11           |  |  |            | 11 |              |  | LOGO
 1y 4m |              |  | 5 |      |  |  | 5        |  |  |       | 200  |  |       |  | -   |  |  |  | 200   |  |  |  | 69    | 
| |  | LOGO
 1y 6m LOGO
 1y 9m |  |              | 13                           |  |              |                            | 13 |            |                                         | LOGO
 1y 4m         |  |  | 11           |  |  |            | 11 |              |  | LOGO
 1y 7m |              |  | 5 |      |  |  | 5        |  |  |       | 200  |  |       |  | 30  |  |  |  | 230   |  |  |  | 137   | 
| |  | LOGO
 3y                |  |              | 10                           |  |              |                            | 10 |            |                                         | LOGO
 3y            |  |  | 11           |  |  |            | 11 |              |  |             |              |  |   |      |  |  |          |  |  |       | 165  |  |       |  | 19  |  |  |  | 184   |  |  |  | 150   | 
| |  | LOGO
 11m               |  |              | 10                           |  |              |                            | 10 |            |                                         | LOGO
 11m           |  |  | 11           |  |  |            | 11 |              |  |             |              |  |   |      |  |  |          |  |  |       | 165  |  |       |  | -   |  |  |  | 165   |  |  |  | -     | 
| |  | LOGO
 1y 4m             |  |              | 10                           |  |              |                            | 8  |            |                                         | LOGO
 1y 4m         |  |  | 11           |  |  |            | 9  |              |  |             |              |  |   |      |  |  |          |  |  |       | 165  |  |       |  | 1   |  |  |  | 166   |  |  |  | 81    | 
|
| | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  | LOGO
 1y 5m |              |  | 5 |      |  |  | 4        |  |  |       | -    |  |       |  | -   |  |  |  | -     |  |  |  | -     | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         | LOGO
 4y 3m         |  |  | 11           |  |  |            | 11 |              |  | LOGO
 3y 9m |              |  | 5 |      |  |  | 5        |  |  |       | -    |  |       |  | -   |  |  |  | -     |  |  |  | 36    | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  |             |              |  |   |      |  |  |          |  |  |       | 115  |  |       |  | 33  |  |  |  | 148   |  |  |  | -     | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  |             |              |  |   |      |  |  |          |  |  |       | -    |  |       |  | -   |  |  |  | -     |  |  |  | -     | 
| |  | LOGO
 3y                |  |              | 10                           |  |              |                            | 10 |            |                                         |                     |  |  |              |  |  |            |    |              |  |             |              |  |   |      |  |  |          |  |  |       | 115  |  |       |  | 22  |  |  |  | 137   |  |  |  | 115   | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  |             |              |  |   |      |  |  |          |  |  |       | -    |  |       |  | -   |  |  |  | -     |  |  |  | 29    | 
| | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  |             |              |  |   |      |  |  |          |  |  |       | -    |  |       |  | -   |  |  |  | -     |  |  |  | -     | 
| |  |                         |  |              |                              |  |              |                            |    |            |                                         |                     |  |  |              |  |  |            |    |              |  |             |              |  |   |      |  |  |          |  |  |       | 2005 |  |       |  | 119 |  |  |  | 2,124 |  |  |  | 2,107 | 



|           |  |                                                                                                                                             
|---------- |  | --------------------------------------------------------------------------------------------------------------------------------------------
|LOGO  LOGO |  | Directors at 31 December 2016
or appointed post year-end Chair of Committee (y
= years, m = months) Committee Member (y = years, m = months)





Santander UK plc159



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Annual Report 2016

Governance









Directors report







Introduction The Directors have
pleasure in submitting their report together with the financial statements for the year ended 31 December 2016. The information in the Directors Report is unaudited, except where marked. History and corporate structure Santander UK plc (incorporated on
12 September 1988) is a subsidiary of Banco Santander SA, a Spanish retail and commercial bank with a meaningful market share in ten core countries in Europe and the Americas. Santander UK was formed from the acquisition of three former
building societies Abbey National, Alliance & Leicester, and Bradford & Bingley and has been operating under a single brand since 2010. The ordinary shares of the Company are not traded. A list of the subsidiaries of the Company,
where they are incorporated, their registered office and details of branches is provided in the Shareholder information section of the Consolidated Financial Statements. Note 36 provides details of the Companys share capital. Structural relationship of Santander UK with Banco Santander  the subsidiary model Banco Santander operates a subsidiary model. This involves autonomous units, such as Santander UK, operating in core markets, with each unit being responsible
for its own liquidity, funding and capital management on an ongoing basis. The model is designed to minimise the risk to Banco Santander, and all its units, from problems arising elsewhere in Banco Santander. The subsidiary model means that Banco
Santander SA has no obligation to provide any liquidity, funding or capital assistance, to any of these units, although it enables Banco Santander SA to take advantage selectively of opportunities. Under the subsidiary model, Santander UK plc generates funding and liquidity through retail and corporate deposits, as well as its own debt programmes and facilities.
Santander UK plc does this by relying on the strength of its own balance sheet and profitability. It does not rely on any guarantees from Banco Santander SA, any subsidiaries of the Banco Santander group outside the Santander UK group, or any of its
own subsidiaries.


Related party transactions with companies in the Banco Santander group are managed on an arms length commercial
basis. Transactions which are not in the ordinary course of business must be approved in advance by the Santander UK Board. The subsidiary model gives Santander UK
considerable financial flexibility, yet enables it to continue to take advantage of significant synergies and strengths that come from being part of the global Banco Santander group, in brand, products, systems, platforms, development capacity and
management capability. In the subsidiary model, Banco Santander facilitates the sharing of best practice and provides common technology, operations and support services to all of its subsidiaries via independent operating entities, themselves
established by Banco Santander SA so as to be able to continue operating as viable standalone businesses. UK Group Framework Santander UK operates a UK Group Framework of corporate governance which defines our responsibilities and relationship with Banco Santander SA, our sole shareholder. This
provides Banco Santander with the oversight and controls they need whilst discharging our responsibilities in the UK. The UK Group Framework sets out, amongst other elements:  
The principle that at least 50% of the Board should be INEDs and the other 50% either Executive Directors or Banco Santander nominated Non-Executive Directors  
The definition of independence, in recognition of our ownership, is a Director who has no current or recent relationship with Banco Santander and Santander UK, other than through the UK Board role. Under this definition
the Chair is considered independent  
The manner in which the Chair, Chief Executive Officer, other Executive Directors, INEDs, and Banco Santander nominated Non-Executive Directors will be appointed  
The iterative process by which strategy and annual budgets will be approved by Banco Santander and the Santander UK Board  
How remuneration of key executives will be determined. Result and dividends The consolidated profit after tax for the year was £1,319m (2015: £964m). The Directors do not recommend the payment of a final dividend for 2016 (2015:
£nil). Two interim dividends were declared on the Companys ordinary shares in issue during the year. The first dividend of £317m was declared on 30 June 2016 and paid on 30 September 2016, the second dividend of
£276m








160Santander UK plc



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| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







LOGO

For aggregate Directors remuneration, see Note 41 to the Consolidated Financial StatementsLOGO

For highest paid Director details, see Note 41 to the Consolidated Financial StatementsLOGO

For Executive remuneration, see pages 154 to 159LOGO

For Non-Executive remuneration, see pages 157 to 159LOGO

For pension scheme details, see Note 34 to the Consolidated Financial StatementsLOGO

For related party transactions, see Note 42 to the Consolidated Financial StatementsLOGO

For our Risk review, see pages 32 to 128


was declared on 22 December 2016 and will be paid in March 2017. Details of Santander UKs activities and business performance during 2016, together with an indication of future outlook, are set out in the Strategic report on
pages 2 to 3 and the Financial review on pages 4 to 31. Events after the balance sheet date There have been no material post balance sheet events. Directors The names and biographical details of the current Directors are shown on pages 130 to 134. Particulars of their emoluments and interests in shares can be found in the
Directors Remuneration implementation report on pages 156 to 157. Changes to the composition of the Board can be found on pages 158 to 159, with further details in the Chairs report on Corporate Governance, on pages 135 to 138, and each
of the Committee Chairs reports on pages 139, 141, 146, and 152. Appointment and retirement of Directors All Directors are appointed and retired in accordance with the Companys Articles of Association, the UK Companies Act 2006 and the UK Group Framework. The Company does not require the Directors to offer themselves for re-election every year, or that new Directors appointed by the Board offer themselves for election at
the next Annual General Meeting. The appointment of Peter Jackson was proposed by Banco Santander. Directors indemnities In addition to Directors and Officers liability insurance cover in place throughout 2016, individual deeds of indemnity were also in place to provide cover to
the Directors for liabilities to the maximum extent permitted by law. These remain in force for the duration of the Directors period of office from the date of appointment. The Directors of the Company, including former Directors who resigned
during the year, benefit from these deeds of indemnity. They constitute qualifying third party indemnity provisions for the purposes of the Companies Act 2006. Deeds
for existing Directors are available for inspection at the Companys registered office. The Company has also granted an indemnity which constitutes
qualifying third party indemnity provisions to the Directors of its subsidiary and associated companies, including former Directors who resigned during the year and since the year-end.


Qualifying pension scheme indemnities were also granted to the Trustees of the Santander UK groups pension schemes. Employees We continue to ensure that our remuneration policies are
consistent with our strategic objectives and are designed with the long-term success of the Company in mind. In doing so we aim to attract and retain the most talented and committed people with first class development schemes and a customer-focused
culture that empowers people, values individuality and encourages collaboration. A highly motivated and engaged workforce provides the best service for our customers. Communication Santander UK wants to involve and inform
employees on matters that affect them. The intranet is a focal point for communications with daily updates on what is happening across Santander. The We are Santander website connects staff to all the information they need about working
for Santander UK. Santander UK also uses face-to-face communication, such as team meetings, regional roadshows and annual staff conventions for strategic updates. All these channels are designed to keep employees fully informed of news and
developments which may have an impact on them, and to keep them up to date on financial, economic and other factors which affect Santander UKs performance. Santander UK considers employees opinions and asks for their views on a range of
issues through regular Company-wide surveys. Consultation Santander UK has a successful history of working in partnership with its recognised trade unions, Advance and the Communication Workers Union (CWU). Both trade unions are
affiliated to the Trades Union Congress. We consult Advance and the CWU on significant proposals and change initiatives within the business at both national and local levels.








Santander UK plc161



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Annual Report 2016

Governance













Employee share ownership Santander UK continues to operate two all-employee, HMRC-approved share schemes: a Save-As-You-Earn (Sharesave) Scheme and a Share Incentive Plan (SIP), the latter of
which allows employees to purchase Banco Santander SA shares from gross salary. Eligible senior management can participate in a Banco Santander long-term incentive plan. See Note 40 to the Consolidated Financial Statements for a description of the
plans and the related costs and obligations. Disability Santander UK is committed to equality of access and quality of service for disabled people and embraces the spirit of the UK Equality Act 2010 throughout its business
operations. Santander UK has processes in place to help train, develop, retain and promote employees with disabilities. It is committed to giving full and fair
consideration to applications for employment made by disabled people, having particular regard to their particular aptitudes and abilities, and for continuing the employment of employees who have become disabled by arranging appropriate training and
making reasonable adjustment within the workplace. CO2 emissions This year CO2emissions, measured in CO2equivalent
tonnes, have decreased by 22% year on year to 12,468 tonnes. CO2from fuel has decreased by 11% to 5,817 tonnes in 2016, CO2from
business travel has decreased by 31% to 6,650 tonnes in 2016 and output per employee tonne has reduced by 27% to 0.52 tonnes in 2016.


Code of Ethical Conduct Santander UK is committed to maintaining high ethical standards  adhering to laws and regulations, conducting business in a responsible way and treating all
stakeholders with honesty and integrity. These principles are further reflected in Santander UKs Code of Ethical Conduct as updated in December 2015. This sets out the standards expected of all employees, and supports The Santander Way and
Santander UKs commitment to being Simple, Personal and Fair. Under their terms and conditions of employment, staff are required to act at all times with the highest standards of business conduct in order to protect Santander UKs
reputation and ensure a Company culture which is free from any risk of corruption, compromise or conflicts of interest. Staff are also required to comply with all Company policies. These require employees to:  
Abide by all relevant laws and regulations  
Act with integrity in all their business actions on behalf of Santander UK  
Not use their authority or office for personal gain  
Conduct business relationships in a transparent manner  
Reject all improper practices or dealings to which they may be exposed. The SEC requires companies to disclose whether
they have a code of ethics that applies to the CEO and senior financial officers which promotes honest and ethical conduct, full, fair, accurate, timely and understandable disclosures, compliance with applicable governmental laws, rules and
regulations, prompt internal reporting of violations and accountability for adherence to such a code of ethics. Santander UK meets these requirements through its
Code of Ethical Conduct, the Anti-Bribery and Corruption Policy, the Whistleblowing Policy, the FCAs Principles for Business, and the FCAs Principles and Code of Practice for Approved Persons, with which the CEO and senior financial
officers must comply. These include requirements to manage conflicts of interest appropriately and to disclose any information the FCA may want to know about. Santander UK provides a copy of these documents to anyone, free of charge, on application to Santander UK Group Holdings plc, 2 Triton Square, Regents Place, London
NW1 3AN.


Political contributions In 2016
and 2015, no contributions were made for political purposes and no political expenditure was incurred. Share capital Details about the structure of the Companys capital, including the rights and obligations attaching to each class of share in the Company, can be found in Note 36
to the Consolidated Financial Statements. Details of employee share schemes and how rights are exercisable can be found in Note 40 to the Consolidated Financial
Statements. The powers of the Directors in relation to share capital are set out in the Companys Articles of Association as determined by the Companies Act
2006. Subsidiaries and branches The Santander UK group consists of a
parent company, Santander UK plc, incorporated in the United Kingdom and a number of directly and indirectly held subsidiaries and associates. Santander UK directly or indirectly holds 100% of the issued ordinary share capital of its principal
subsidiaries. All companies operate principally in their country of incorporation or registration. Abbey National Treasury Services plc, a subsidiary of Santander UK plc, also has a branch office in the United States and the Cayman Islands.
Santander UK plc has branches in the Isle of Man and in Jersey. For further information see Note 21 to the Consolidated Financial Statements and Subsidiaries, joint ventures and associates in the Shareholder information section of this
Annual Report. Financial instruments The financial risk management
objectives and policies of Santander UK, the policy for hedging, and the exposure of Santander UK to credit risk, market risk, and liquidity risk are outlined in the Risk review. Research and development Santander UK has a comprehensive product approval
process and policy. New products, campaigns and business initiatives are reviewed by Santander UKs Product Approval and Oversight Committee.








162Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |           |  |                   |  |                     |  |                   |  | 
| |  |  |  |  |  |  |  | --------- |  | ----------------- |  | ------------------- |  | ----------------- |  | 
| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 







Supervision and regulation Santander UK is authorised by the PRA and regulated by the FCA and the PRA. Some of its subsidiaries and associates are also authorised by the PRA or the FCA and
regulated by the FCA and/ or the PRA. While Santander UK operates primarily in the UK, it is also subject to the laws and regulations of the other jurisdictions in
which it operates, such as the requirements of the SEC for its activities in the US. Internal controls Risk management and internal controls The Board and its
Committees are responsible for reviewing and ensuring the effectiveness of managements system of risk management and internal controls. We have carried out a
robust assessment of the principal risks facing the Company, (as set out in How we define risk on page 34 of the Risk review,) including those that would threaten its business model, future performance, solvency or liquidity. Managements report on internal control over financial reporting Internal control over financial reporting is a component of an overall system of internal control. Santander UKs internal control over financial reporting is
designed to provide reasonable assurance regarding the reliability of financial reporting, and the preparation and fair presentation of financial statements for external purposes in accordance with International Financial Reporting Standards (IFRS)
as issued by the International Accounting Standards Board and endorsed by the European Union. Santander UKs internal control over financial reporting includes:  
Policies and procedures that relate to the maintenance of records that fairly and accurately reflect the transactions and dispositions of assets  
Controls providing reasonable assurance that transactions are recorded as necessary to permit the preparation of financial statements in accordance with IFRS, and that receipts and expenditures are being made only as
authorised by management  
Controls providing reasonable assurance regarding prevention or timely detection of unauthorised acquisition, and use of disposition of assets that could have a material effect on the financial statements.


Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. In
addition, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or because the degree of compliance with policies or procedures may deteriorate. Management is responsible for establishing and maintaining adequate internal control over the financial reporting of Santander UK. Management assessed the
effectiveness of Santander UKs internal control over financial reporting at 31 December 2016 based on the criteria established in the Internal Control  Integrated Framework issued by the Committee of Sponsoring Organizations of the
Treadway Commission (COSO) in May 2013 (the 2013 Framework). Based on this assessment, management concluded, at 31 December 2016, that Santander UKs
internal control over financial reporting was effective. Disclosure controls and procedures over financial reporting Santander UK has evaluated, with the participation of its CEO and CFO, the effectiveness of Santander UKs disclosure controls at 31 December 2016. There are
inherent limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the circumvention or overriding of the controls and procedures. Accordingly, even effective disclosure
controls and procedures can only provide reasonable assurance of achieving their control objectives. Based upon Santander UKs evaluation, the CEO and the CFO
have concluded that, at 31 December 2016, Santander UKs disclosure controls and procedures were effective to provide reasonable assurance that information required to be disclosed by Santander UK in the reports that it files and submits
under the US Securities Exchange Act of 1934 is recorded, processed, summarised and reported within the time periods specified in the applicable rules and forms, and that it is accumulated and communicated to Santander UKs management,
including the CEO and CFO, as appropriate, to allow timely decisions regarding disclosure. Changes in internal control over financial
reporting There were no changes to our internal control over financial reporting during the period covered by this report that have materially affected, or
are reasonably likely to materially affect, our internal control over financial reporting.


Going concern The going concern
of Santander UK is reliant on preserving a sufficient level of capital and adequately funding the balance sheet. Santander UKs business activities and financial position, together with the factors likely to affect its future development and
performance, are set out in the Financial review on pages 4 to 31. Santander UKs objectives, policies and processes for managing the financial risks to which it is exposed, including capital, funding and liquidity, are described in the Risk
review. In assessing going concern, the Directors take account of all information of which they are aware about the future, which is at least, but is not limited to,
12 months from the date that the balance sheet is signed. In making their going concern assessment, the information considered by the Directors includes Santander
UKs forecasts and projections, estimated capital, funding and liquidity requirements, contingent liabilities, and possible economic, market and product developments, taking account of reasonably possible changes in trading performance. For
capital, funding and liquidity purposes, Santander UK operates on a standalone basis and is subject to regular and rigorous monitoring by external parties. The Directors review the outputs of stress testing as part of the approval processes for the
ICAAP, the ILAAP, our Risk Appetite and regulatory stress tests. We exceeded the Bank of Englands 2016 stress test threshold requirement. The Directors
consider it appropriate to adopt the going concern basis of accounting in preparing the financial statements.








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Annual Report 2016

Governance













Statement of Compliance The UK Corporate Governance Code The Board confirms that, for the year ended 31 December 2016, Santander UK has applied those principles
and provisions of the UK Corporate Governance Code 2014, as appropriate given its ownership structure. BBA Code for Financial Reporting
Disclosure Santander UKs financial statements for the year ended 31 December 2016 have been prepared in compliance with the principles of the BBA
Code for Financial Reporting Disclosure. Directors responsibilities The Directors are responsible for preparing the Annual Report including the financial statements in accordance with applicable law and regulations. Company law requires
the Directors to prepare financial statements for each financial year. The Directors are required by the International Accounting Standards (IAS) Regulation to prepare the group financial statements under IFRS, as adopted by the EU, and have
also elected to prepare the parent company financial statements in accordance with IFRS, as adopted by the EU. The financial statements are also required by law to be properly prepared in accordance with the UK Companies Act 2006 and
Article 4 of the IAS Regulation. In addition, in order to meet certain US requirements, the Directors are required to prepare Santander UKs financial statements in accordance with IFRS, as issued by the International Accounting
Standards Board (IASB). The Directors are responsible for ensuring the financial statements give a true and fair view of the assets, liabilities, financial position
and profit or loss presented and that the management report (comprising the Strategic report and the Directors Report), includes a fair review of the development and performance of the business and a description of the principal
risks and uncertainties the business faces.


IAS 1 requires that financial statements present fairly, for each financial year, the Companys financial position,
financial performance and cash flows. This requires the faithful representation of the effects of transactions, and other events and conditions, in accordance with the definitions and recognition criteria for assets, liabilities, income and expenses
set out in the IASBs Framework for the preparation and presentation of financial statements. In virtually all circumstances, a fair presentation will be achieved by compliance with all applicable IFRS. However, the Directors are also required
to:  
Properly select and apply accounting policies  
Present information, including accounting policies, in a manner that provides relevant, reliable, comparable and understandable information  
Provide additional disclosures when compliance with the specific requirements in IFRS are insufficient to enable users to understand the impact of particular transactions, other events and conditions on the
entitys financial position and financial performance  
Make an assessment of the Companys ability to continue as a going concern. The Directors are responsible for
keeping adequate accounting records that are sufficient to show and explain the Companys transactions and disclose with reasonable accuracy at any time the financial position of the Company and enable them to ensure that the financial
statements comply with the UK Companies Act 2006. They are also responsible for safeguarding the assets of the Company and hence for taking reasonable steps for the prevention and detection of fraud and other irregularities. The Directors are responsible for the maintenance and integrity of the corporate and financial information included on our website. Legislation in the UK governing the preparation and dissemination of financial statements may differ from legislation in other jurisdictions.


Disclosure of information to Auditors Each of the Directors at the date of approval of this report confirms that:  
So far as the Director is aware, there is no relevant audit information of which Santander UKs auditor is unaware  
The Director has taken all steps that they ought to have taken as a Director to make himself or herself aware of any relevant audit information and to establish that Santander UKs auditor is aware of that
information. This confirmation is given and should be interpreted in accordance with the provisions of Section 418 of the UK Companies Act 2006. Auditor PricewaterhouseCoopers LLP have expressed their willingness to
continue in office as auditor and a resolution to reappoint them will be proposed at the Companys forthcoming Annual General Meeting. By Order of the Board  LOGO Marc Boston Company Secretary 22 February 2017 2 Triton Square, Regents Place, London NW1 3AN








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| |  |  |  |  |  |  |  |          
| |  |  |  |  |  |  |  |           |  | Corporate         |  | Directors          |  |                   |  | 
| |  |  |  |  |  |  |  | Directors |  | Governance
Report |  | Remuneration
Report |  | Directors Report |  | 









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##### Table of Contents



Annual Report 2016

Financial
statements







Financial statements



167



Audit
report173



Primary financial statements173



Consolidated Income
Statement173



Consolidated Statement of Comprehensive Income174



Consolidated Balance
Sheet175



Consolidated Cash Flow
Statement176



Consolidated Statement of Changes in Equity177



Company Balance Sheet178



Company Cash Flow
Statement179



Company Statement of Changes in
Equity180



Notes to the financial statements






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| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of Santander UK plc

In our
opinion, the accompanying consolidated balance sheet and the related consolidated income statement, statement of comprehensive income, consolidated cash flow statement, and consolidated statement of changes in equity present fairly, in all material
respects, the financial position of Santander UK plc and its subsidiaries at 31 December 2016, and the results of their operations and their cash flows for the year then ended in conformity with International Financial Reporting Standards as
issued by the International Accounting Standards Board and in conformity with International Financial Reporting Standards as adopted by the European Union. These financial statements are the responsibility of the Companys management. Our
responsibility is to express an opinion on these financial statements based on our audit. We conducted our audits of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards
require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the
financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

Other Matter

We also have audited the adjustments to reflect the change in
the composition of reportable segments, as described in Note 46. In our opinion, such adjustments are appropriate and have been properly applied. We were not engaged to audit, review, or apply any procedures to the 2015 or 2014 financial statements
of the Company other than with respect to the adjustments and, accordingly, we do not express an opinion or any other form of assurance on the 2015 or 2014 financial statements taken as a whole.

/s/ PricewaterhouseCoopers LLP

London, UK

1 March 2017





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Annual Report 2016

Financial
statements









REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of Santander UK plc

We have
audited, before the effects of the adjustments to retrospectively apply the changes in accounting discussed in Note 46 to the consolidated financial statements, the consolidated balance sheet of Santander UK plc and subsidiaries (the Group) as at
31 December 2015, and the related consolidated income statements, consolidated statements of comprehensive income, consolidated statements of changes in equity, and consolidated cash flow statements, the related Notes 1 to 46 and the
information on pages 32 to 128 of the Risk review, except for those items marked as unaudited, for the years ended December 31, 2015 and 2014. These consolidated financial statements are the responsibility of the Groups management. Our
responsibility is to express an opinion on these consolidated financial statements based on our audits.

We conducted our audits in accordance with the standards of
the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. The Group is not
required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are
appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Groups internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We
believe that our audits provide a reasonable basis for our opinion.

In our opinion, such 2015 and 2014 consolidated financial statements, before the effects of the
adjustments to retrospectively apply the changes in accounting discussed in Note 46 to the consolidated financial statements, present fairly, in all material respects, the financial position of Santander UK plc and subsidiaries as at
31 December 2015, and the results of their operations and their cash flows for the years ended December 31, 2015 and 2014, in conformity with International Financial Reporting Standards (IFRS) as adopted by the European Union and IFRS as
issued by the International Accounting Standards Board.

We were not engaged to audit, review, or apply any procedures to the adjustments to retrospectively apply
the changes in accounting discussed in Note 46 to the consolidated financial statements and, accordingly, we do not express an opinion or any other form of assurance about whether such retrospective adjustments are appropriate and have been properly
applied. Those retrospective adjustments were audited by other auditors.

/s/ Deloitte LLP

London, UK

24 February 2016





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| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements











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| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements











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| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





CONSOLIDATED INCOME STATEMENT

For the years ended 31 December



|                                                                    |  |       |  |         |         |  |         |  |         |         |  |  |         | 
|------------------------------------------------------------------- |  | ----- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- | 
|                                                                    |  | Notes |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m | 
|Interest and similar income                                         |  | 3     |  |         | 6,467   |  |         |  | 6,695   |         |  |  | 6,797   | 
|Interest expense and similar charges                                |  | 3     |  |         | (2,885) |  |         |  | (3,120) |         |  |  | (3,363) | 
|Net interest income                                                 |  |       |  |         | 3,582   |  |         |  | 3,575   |         |  |  | 3,434   | 
|Fee and commission income                                           |  | 4     |  |         | 1,188   |  |         |  | 1,115   |         |  |  | 1,095   | 
|Fee and commission expense                                          |  | 4     |  |         | (418)   |  |         |  | (400)   |         |  |  | (356)   | 
|Net fee and commission income                                       |  |       |  |         | 770     |  |         |  | 715     |         |  |  | 739     | 
|Net trading and other income                                        |  | 5     |  |         | 443     |  |         |  | 283     |         |  |  | 297     | 
|Total operating income                                              |  |       |  |         | 4,795   |  |         |  | 4,573   |         |  |  | 4,470   | 
|Operating expenses before impairment losses, provisions and
charges |  | 6     |  |         | (2,414) |  |         |  | (2,400) |         |  |  | (2,397) | 
|Impairment losses on loans and advances                             |  | 8     |  |         | (67)    |  |         |  | (66)    |         |  |  | (258)   | 
|Provisions for other liabilities and charges                        |  | 8     |  |         | (397)   |  |         |  | (762)   |         |  |  | (416)   | 
|Total operating impairment losses, provisions and
charges           |  |       |  |         | (464)   |  |         |  | (828)   |         |  |  | (674)   | 
|Profit before tax                                                   |  |       |  |         | 1,917   |  |         |  | 1,345   |         |  |  | 1,399   | 
|Tax on profit                                                       |  | 9     |  |         | (598)   |  |         |  | (381)   |         |  |  | (289)   | 
|Profit after tax for the year                                       |  |       |  |         | 1,319   |  |         |  | 964     |         |  |  | 1,110   | 
|                                                                    |  |       |  |        
|Attributable to:                                                    |  |       |  |         |         |  |         |  |         |         |  |  |         | 
|Equity holders of the parent                                        |  |       |  |         | 1,292   |  |         |  | 939     |         |  |  | 1,110   | 
|Non-controlling interests                                           |  | 37    |  |         | 27      |  |         |  | 25      |         |  |  | -       | 

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME

For the years ended 31 December



|                                                                                            |  |       |  |         |         |  |         |  |       |         |  |  |       | 
|------------------------------------------------------------------------------------------- |  | ----- |  | ------- | ------- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                                                                            |  | Notes |  | 2016
£m |         |  | 2015
£m |  |       | 2014
£m | 
|Profit for the year                                                                         |  |       |  |         | 1,319   |  |         |  | 964   |         |  |  | 1,110 | 
|Other comprehensive income:                                                                 |  |       |  |         |         |  |         |  |       |         |  |  |       | 
|Other comprehensive income that may be reclassified to profit or loss subsequently:         |  |       |  |         |         |  |         |  |       |         |  |  |       | 
|Available-for-sale securities:                                                              |  |       |  |         |         |  |         |  |       |         |  |  |       | 
|- Change in fair value                                                                      |  | 19    |  |         | 127     |  |         |  | 14    |         |  |  | 235   | 
|- Income statement transfers                                                                |  |       |  |         | (115)   |  |         |  | 42    |         |  |  | (208) | 
|- Taxation                                                                                  |  | 9     |  |         | (16)    |  |         |  | (2)   |         |  |  | (6)   | 
|                                                                                            |  |       |  |         | (4)     |  |         |  | 54    |         |  |  | 21    | 
|Cash flow hedges:                                                                           |  |       |  |         |         |  |         |  |       |         |  |  |       | 
|- Effective portion of changes in fair value                                                |  |       |  |         | 4,365   |  |         |  | (307) |         |  |  | 44    | 
|- Income statement transfers                                                                |  |       |  |         | (4,076) |  |         |  | 305   |         |  |  | 427   | 
|- Taxation                                                                                  |  | 9     |  |         | (72)    |  |         |  | (6)   |         |  |  | (99)  | 
|                                                                                            |  |       |  |         | 217     |  |         |  | (8)   |         |  |  | 372   | 
|Currency translation on foreign operations                                                  |  |       |  |         | (3)     |  |         |  | (5)   |         |  |  | (4)   | 
|Net other comprehensive income that may be reclassified to profit
or loss subsequently      |  |       |  |         | 210     |  |         |  | 41    |         |  |  | 389   | 
|Other comprehensive income that will not be reclassified to profit or loss subsequently:    |  |       |  |         |         |  |         |  |       |         |  |  |       | 
|Pension remeasurement                                                                       |  | 34    |  |         | (528)   |  |         |  | 319   |         |  |  | 132   | 
|Taxation                                                                                    |  | 9     |  |         | 133     |  |         |  | (89)  |         |  |  | (27)  | 
|Net other comprehensive income that will not be reclassified to
profit or loss subsequently |  |       |  |         | (395)   |  |         |  | 230   |         |  |  | 105   | 
|Total other comprehensive income for the year net of
tax                                    |  |       |  |         | (185)   |  |         |  | 271   |         |  |  | 494   | 
|Total comprehensive income for the year                                                     |  |       |  |         | 1,134   |  |         |  | 1,235 |         |  |  | 1,604 | 
|                                                                                            |  |       |  |        
|Attributable to:                                                                            |  |       |  |         |         |  |         |  |       |         |  |  |       | 
|Equity holders of the parent                                                                |  |       |  |         | 1,107   |  |         |  | 1,209 |         |  |  | 1,604 | 
|Non-controlling interests                                                                   |  | 37    |  |         | 27      |  |         |  | 26    |         |  |  | -     | 

The accompanying Notes to the Financial Statements form an integral part of these Consolidated Financial Statements.





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Annual Report 2016

Financial
statements









CONSOLIDATED BALANCE SHEET

At
31 December



|                                               |  |       |  |         |         |  |         |  |         | 
|---------------------------------------------- |  | ----- |  | ------- | ------- |  | ------- |  | ------- | 
|                                               |  | Notes |  | 2016
£m |         |  | 2015
£m | 
|Assets                                         |  |       |  |         |         |  |         |  |         | 
|Cash and balances at central banks             |  |       |  |         | 17,107  |  |         |  | 16,842  | 
|Trading assets                                 |  | 11    |  |         | 30,035  |  |         |  | 23,961  | 
|Derivative financial instruments               |  | 12    |  |         | 25,471  |  |         |  | 20,911  | 
|Financial assets designated at fair value      |  | 13    |  |         | 2,140   |  |         |  | 2,398   | 
|Loans and advances to banks                    |  | 14    |  |         | 4,348   |  |         |  | 3,548   | 
|Loans and advances to customers                |  | 15    |  |         | 199,738 |  |         |  | 198,045 | 
|Loans and receivables securities               |  | 18    |  |         | 257     |  |         |  | 52      | 
|Available-for-sale securities                  |  | 19    |  |         | 10,561  |  |         |  | 9,012   | 
|Held-to-maturity investments                   |  | 20    |  |         | 6,648   |  |         |  | -       | 
|Macro hedge of interest rate risk              |  |       |  |         | 1,098   |  |         |  | 781     | 
|Interests in other entities                    |  | 21    |  |         | 61      |  |         |  | 48      | 
|Intangible assets                              |  | 22    |  |         | 2,316   |  |         |  | 2,231   | 
|Property, plant and equipment                  |  | 23    |  |         | 1,491   |  |         |  | 1,597   | 
|Current tax assets                             |  |       |  |         | -       |  |         |  | 49      | 
|Retirement benefit assets                      |  | 34    |  |         | 398     |  |         |  | 556     | 
|Other assets                                   |  | 25    |  |         | 1,473   |  |         |  | 1,375   | 
|Total assets                                   |  |       |  |         | 303,142 |  |         |  | 281,406 | 
|Liabilities                                    |  |       |  |         |         |  |         |  |         | 
|Deposits by banks                              |  | 26    |  |         | 9,769   |  |         |  | 8,278   | 
|Deposits by customers                          |  | 27    |  |         | 177,172 |  |         |  | 164,074 | 
|Trading liabilities                            |  | 28    |  |         | 15,560  |  |         |  | 12,722  | 
|Derivative financial instruments               |  | 12    |  |         | 23,103  |  |         |  | 21,508  | 
|Financial liabilities designated at fair value |  | 29    |  |         | 2,440   |  |         |  | 2,016   | 
|Debt securities in issue                       |  | 30    |  |         | 50,346  |  |         |  | 49,615  | 
|Subordinated liabilities                       |  | 31    |  |         | 4,303   |  |         |  | 3,885   | 
|Macro hedge of interest rate risk              |  |       |  |         | 350     |  |         |  | 110     | 
|Other liabilities                              |  | 32    |  |         | 2,871   |  |         |  | 2,335   | 
|Provisions                                     |  | 33    |  |         | 700     |  |         |  | 870     | 
|Current tax liabilities                        |  |       |  |         | 54      |  |         |  | 1       | 
|Deferred tax liabilities                       |  | 24    |  |         | 128     |  |         |  | 223     | 
|Retirement benefit obligations                 |  | 34    |  |         | 262     |  |         |  | 110     | 
|Total liabilities                              |  |       |  |         | 287,058 |  |         |  | 265,747 | 
|Equity                                         |  |       |  |         |         |  |         |  |         | 
|Share capital and other equity instruments     |  | 36    |  |         | 4,904   |  |         |  | 4,911   | 
|Share premium                                  |  | 36    |  |         | 5,620   |  |         |  | 5,620   | 
|Retained earnings                              |  |       |  |         | 4,886   |  |         |  | 4,679   | 
|Other reserves                                 |  |       |  |         | 524     |  |         |  | 314     | 
|Total shareholders equity                     |  |       |  |         | 15,934  |  |         |  | 15,524  | 
|Non-controlling interests                      |  | 37    |  |         | 150     |  |         |  | 135     | 
|Total equity                                   |  |       |  |         | 16,084  |  |         |  | 15,659  | 
|Total liabilities and equity                   |  |       |  |         | 303,142 |  |         |  | 281,406 | 

The accompanying Notes to the Financial Statements form an integral part of these Consolidated Financial Statements.

The Financial Statements were approved and authorised for issue by the Board on 22 February 2017 and signed on its behalf by:



|                                   |  |                        
|---------------------------------- |  | -----------------------
|Nathan Bostock                     |  | Antonio Roman          
|Chief Executive Officer            |  | Chief Financial Officer
|                                   | 
|Company Registered Number: 2294747 |  |                        





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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





CONSOLIDATED CASH FLOW STATEMENT

For the years ended 31 December



|                                                                          |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|------------------------------------------------------------------------- |  | ------ |  | ------- | -------- |  | ------- |  | -------- | ------- |  |  | -------- | 
|                                                                          |  | Notes  |  | 2016
£m |          |  | 2015
£m |  |          | 2014
£m | 
|Cash flows from operating activities                                      |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Profit for the year                                                       |  |        |  |         | 1,319    |  |         |  | 964      |         |  |  | 1,110    | 
|Adjustments for:                                                          |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Non-cash items included in profit                                         |  |        |  |         | 876      |  |         |  | 1,841    |         |  |  | 1,306    | 
|Change in operating assets                                                |  |        |  |         | (8,768)  |  |         |  | (9,990)  |         |  |  | (11,662) | 
|Change in operating liabilities                                           |  |        |  |         | 21,200   |  |         |  | 4,292    |         |  |  | 4,475    | 
|Corporation taxes paid                                                    |  |        |  |         | (507)    |  |         |  | (419)    |         |  |  | (149)    | 
|Effects of exchange rate differences                                      |  |        |  |         | 3,885    |  |         |  | (585)    |         |  |  | (613)    | 
|Net cash flows from operating activities                                  |  | 38     |  |         | 18,005   |  |         |  | (3,897)  |         |  |  | (5,533)  | 
|Cash flows from investing activities                                      |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Investments in other entities                                             |  | 21     |  |         | -        |  |         |  | (109)    |         |  |  | -        | 
|Proceeds from disposal of subsidiaries                                    |  | 21     |  |         | 149      |  |         |  | -        |         |  |  | -        | 
|Purchase of property, plant and equipment and intangible assets           |  | 22, 23 |  |         | (374)    |  |         |  | (356)    |         |  |  | (506)    | 
|Proceeds from sale of property, plant and equipment and intangible assets |  |        |  |         | 65       |  |         |  | 40       |         |  |  | 71       | 
|Purchase of available-for-sale securities                                 |  |        |  |         | (2,870)  |  |         |  | (2,021)  |         |  |  | (4,236)  | 
|Proceeds from sale and redemption of available-for-sale securities        |  |        |  |         | 2,359    |  |         |  | 1,928    |         |  |  | 526      | 
|Purchase of held-to-maturity investments                                  |  | 20     |  |         | (6,669)  |  |         |  | -        |         |  |  | -        | 
|Net cash flows from investing activities                                  |  |        |  |         | (7,340)  |  |         |  | (518)    |         |  |  | (4,145)  | 
|Cash flows from financing activities                                      |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Issue of AT1 Capital Securities                                           |  | 36     |  |         | -        |  |         |  | 750      |         |  |  | 800      | 
|Issuance costs of AT1 Capital Securities                                  |  |        |  |         | -        |  |         |  | -        |         |  |  | -        | 
|Issue of debt securities                                                  |  |        |  |         | 5,547    |  |         |  | 13,267   |         |  |  | 19,936   | 
|Issuance costs of debt securities                                         |  |        |  |         | (17)     |  |         |  | (33)     |         |  |  | (26)     | 
|Repayment of debt securities                                              |  |        |  |         | (11,352) |  |         |  | (16,098) |         |  |  | (20,310) | 
|Repurchase of other equity instruments                                    |  | 36     |  |         | (7)      |  |         |  | (99)     |         |  |  | (274)    | 
|Dividends paid on ordinary shares                                         |  | 10     |  |         | (419)    |  |         |  | (575)    |         |  |  | (447)    | 
|Dividends paid on other equity instruments                                |  | 10     |  |         | (128)    |  |         |  | (126)    |         |  |  | (40)     | 
|Dividends paid on non-controlling interests                               |  | 10     |  |         | (12)     |  |         |  | -        |         |  |  | -        | 
|Net cash flows from financing activities                                  |  |        |  |         | (6,388)  |  |         |  | (2,914)  |         |  |  | (361)    | 
|Change in cash and cash equivalents                                       |  |        |  |         | 4,277    |  |         |  | (7,329)  |         |  |  | (10,039) | 
|Cash and cash equivalents at beginning of the year                        |  |        |  |         | 20,351   |  |         |  | 27,363   |         |  |  | 37,179   | 
|Effects of exchange rate changes on cash and cash
equivalents             |  |        |  |         | 1,077    |  |         |  | 317      |         |  |  | 223      | 
|Cash and cash equivalents at the end of the year                          |  | 38     |  |         | 25,705   |  |         |  | 20,351   |         |  |  | 27,363   | 

The accompanying Notes to the Financial Statements form an integral part of these Consolidated Financial Statements.





Santander UK plc175



---

##### Table of Contents



Annual Report 2016

Financial
statements









CONSOLIDATED STATEMENT OF CHANGES IN EQUITY

For the years ended 31 December



|                                             |  |       |  |                                           |       |  |                 |  |       |                       |  |  |                     |  |  |                        |       |  |                         |  |     |          |  |  |                              |  |  |          |        |  |  |  |      |  |  |  |        | 
|-------------------------------------------- |  | ----- |  | ----------------------------------------- | ----- |  | --------------- |  | ----- | --------------------- |  |  | ------------------- |  |  | ---------------------- | ----- |  | ----------------------- |  | --- | -------- |  |  | ---------------------------- |  |  | -------- | ------ |  |  |  | ---- |  |  |  | ------ | 
|                                             |  |       |  |                                           |       |  |                 |  |       | Other reserves        |  |  |                     |  |  |                        |       |  |                         |  |     |          | 
|                                             |  | Notes |  | Share capital &other equityinstruments
£m |       |  | Sharepremium
£m |  |       | Available-for-sale
£m |  |  | Cash flowhedging
£m |  |  | Currencytranslation
£m |       |  | Retained
earnings(1)
£m |  |     | Total
£m |  |  | Non-
controllinginterests £m |  |  | Total
£m |       
|1 January 2016                               |  |       |  |                                           | 4,911 |  |                 |  | 5,620 |                       |  |  | 52                  |  |  |                        | 254   |  |                         |  | 8   |          |  |  | 4,679                        |  |  |          | 15,524 |  |  |  | 135  |  |  |  | 15,659 | 
|Profit for the year                          |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | 1,292                        |  |  |          | 1,292  |  |  |  | 27   |  |  |  | 1,319  | 
|Other comprehensive income, net of tax:      |  |       |  |                                           |       |  |                 |  |       |                       |  |  |                     |  |  |                        |       |  |                         |  |     |          |  |  |                              |  |  |          |        |  |  |  |      |  |  |  |        | 
|- Available-for-sale securities              |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | (4)                 |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | (4)    |  |  |  | -    |  |  |  | (4)    | 
|- Cash flow hedges                           |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | 217   |  |                         |  | -   |          |  |  | -                            |  |  |          | 217    |  |  |  | -    |  |  |  | 217    | 
|- Pension remeasurement                      |  | 34    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (395)                        |  |  |          | (395)  |  |  |  | -    |  |  |  | (395)  | 
|- Currency translation on foreign operations |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | (3) |          |  |  | -                            |  |  |          | (3)    |  |  |  | -    |  |  |  | (3)    | 
|Total comprehensive income for the year      |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | (4)                 |  |  |                        | 217   |  |                         |  | (3) |          |  |  | 897                          |  |  |          | 1,107  |  |  |  | 27   |  |  |  | 1,134  | 
|Repurchase of other equity instruments       |  | 36    |  |                                           | (7)   |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | (7)    |  |  |  | -    |  |  |  | (7)    | 
|Dividends on ordinary shares                 |  | 10    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (593)                        |  |  |          | (593)  |  |  |  | -    |  |  |  | (593)  | 
|Dividends on other equity instruments        |  | 10    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (128)                        |  |  |          | (128)  |  |  |  | -    |  |  |  | (128)  | 
|Dividends on non-controlling interests       |  | 10    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | -      |  |  |  | (12) |  |  |  | (12)   | 
|Tax on other equity instruments              |  | 36    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | 31                           |  |  |          | 31     |  |  |  | -    |  |  |  | 31     | 
|31 December 2016                             |  |       |  |                                           | 4,904 |  |                 |  | 5,620 |                       |  |  | 48                  |  |  |                        | 471   |  |                         |  | 5   |          |  |  | 4,886                        |  |  |          | 15,934 |  |  |  | 150  |  |  |  | 16,084 | 
|                                             |  |       |  |                                           |       |  |                 |  |       |                      
|1 January 2015                               |  |       |  |                                           | 4,244 |  |                 |  | 5,620 |                       |  |  | (2)                 |  |  |                        | 262   |  |                         |  | 13  |          |  |  | 4,056                        |  |  |          | 14,193 |  |  |  | -    |  |  |  | 14,193 | 
|Profit for the year                          |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | 939                          |  |  |          | 939    |  |  |  | 25   |  |  |  | 964    | 
|Other comprehensive income, net of tax:      |  |       |  |                                           |       |  |                 |  |       |                       |  |  |                     |  |  |                        |       |  |                         |  |     |          |  |  |                              |  |  |          |        |  |  |  |      |  |  |  |        | 
|- Available-for-sale securities              |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | 54                  |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | 54     |  |  |  | -    |  |  |  | 54     | 
|- Cash flow hedges                           |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | (8)   |  |                         |  | -   |          |  |  | -                            |  |  |          | (8)    |  |  |  | -    |  |  |  | (8)    | 
|- Pension remeasurement                      |  | 34    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | 229                          |  |  |          | 229    |  |  |  | 1    |  |  |  | 230    | 
|- Currency translation on foreign operations |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | (5) |          |  |  | -                            |  |  |          | (5)    |  |  |  | -    |  |  |  | (5)    | 
|Total comprehensive income for the year      |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | 54                  |  |  |                        | (8)   |  |                         |  | (5) |          |  |  | 1,168                        |  |  |          | 1,209  |  |  |  | 26   |  |  |  | 1,235  | 
|Acquisition of subsidiary                    |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | -      |  |  |  | 109  |  |  |  | 109    | 
|Issue of AT1 Capital Securities              |  | 36    |  |                                           | 750   |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | 750    |  |  |  | -    |  |  |  | 750    | 
|Repurchase of other equity instruments       |  | 36    |  |                                           | (83)  |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (16)                         |  |  |          | (99)   |  |  |  | -    |  |  |  | (99)   | 
|Dividends on ordinary shares                 |  | 10    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (427)                        |  |  |          | (427)  |  |  |  | -    |  |  |  | (427)  | 
|Dividends on other equity instruments        |  | 10    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (126)                        |  |  |          | (126)  |  |  |  | -    |  |  |  | (126)  | 
|Tax on other equity instruments              |  | 36    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | 24                           |  |  |          | 24     |  |  |  | -    |  |  |  | 24     | 
|31 December 2015                             |  |       |  |                                           | 4,911 |  |                 |  | 5,620 |                       |  |  | 52                  |  |  |                        | 254   |  |                         |  | 8   |          |  |  | 4,679                        |  |  |          | 15,524 |  |  |  | 135  |  |  |  | 15,659 | 
|                                             |  |       |  |                                           |       |  |                 |  |       |                      
|1 January 2014                               |  |       |  |                                           | 3,709 |  |                 |  | 5,620 |                       |  |  | (23)                |  |  |                        | (110) |  |                         |  | 17  |          |  |  | 3,377                        |  |  |          | 12,590 |  |  |  | -    |  |  |  | 12,590 | 
|Profit for the year                          |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | 1,110                        |  |  |          | 1,110  |  |  |  | -    |  |  |  | 1,110  | 
|Other comprehensive income, net of tax:      |  |       |  |                                           |       |  |                 |  |       |                       |  |  |                     |  |  |                        |       |  |                         |  |     |          |  |  |                              |  |  |          |        |  |  |  |      |  |  |  |        | 
|- Available-for-sale securities              |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | 21                  |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | 21     |  |  |  | -    |  |  |  | 21     | 
|- Cash flow hedges                           |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | 372   |  |                         |  | -   |          |  |  | -                            |  |  |          | 372    |  |  |  | -    |  |  |  | 372    | 
|- Pension remeasurement                      |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | 105                          |  |  |          | 105    |  |  |  | -    |  |  |  | 105    | 
|- Currency translation on foreign operations |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | (4) |          |  |  | -                            |  |  |          | (4)    |  |  |  | -    |  |  |  | (4)    | 
|Total comprehensive income for the year      |  |       |  |                                           | -     |  |                 |  | -     |                       |  |  | 21                  |  |  |                        | 372   |  |                         |  | (4) |          |  |  | 1,215                        |  |  |          | 1,604  |  |  |  | -    |  |  |  | 1,604  | 
|Issue of AT1 Capital Securities              |  | 36    |  |                                           | 800   |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | -                            |  |  |          | 800    |  |  |  | -    |  |  |  | 800    | 
|Repurchase of other equity instruments       |  | 36    |  |                                           | (265) |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (9)                          |  |  |          | (274)  |  |  |  | -    |  |  |  | (274)  | 
|Dividends on ordinary shares                 |  | 10    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (487)                        |  |  |          | (487)  |  |  |  | -    |  |  |  | (487)  | 
|Dividends on other equity instruments        |  | 10    |  |                                           | -     |  |                 |  | -     |                       |  |  | -                   |  |  |                        | -     |  |                         |  | -   |          |  |  | (40)                         |  |  |          | (40)   |  |  |  | -    |  |  |  | (40)   | 
|31 December 2014                             |  |       |  |                                           | 4,244 |  |                 |  | 5,620 |                       |  |  | (2)                 |  |  |                        | 262   |  |                         |  | 13  |          |  |  | 4,056                        |  |  |          | 14,193 |  |  |  | -    |  |  |  | 14,193 | 

(1)     Includes capital redemption reserve of £nil (2015: £21m, 2014: £265m) arising from the
purchase of £300m fixed/floating rate non-cumulative callable preference shares in 2014, 2015 and 2016.

The accompanying Notes to the Financial Statements
form an integral part of these Consolidated Financial Statements.





176Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





COMPANY BALANCE SHEET

At 31 December



|                                               |  |       |  |         |         |  |         |  |         | 
|---------------------------------------------- |  | ----- |  | ------- | ------- |  | ------- |  | ------- | 
|                                               |  | Notes |  | 2016
£m |         |  | 2015
£m | 
|Assets                                         |  |       |  |         |         |  |         |  |         | 
|Cash and balances at central banks             |  |       |  |         | 13,591  |  |         |  | 14,562  | 
|Derivative financial instruments               |  | 12    |  |         | 7,391   |  |         |  | 3,302   | 
|Financial assets designated at fair value      |  | 13    |  |         | 85      |  |         |  | 60      | 
|Loans and advances to banks                    |  | 14    |  |         | 25,699  |  |         |  | 18,962  | 
|Loans and advances to customers                |  | 15    |  |         | 200,574 |  |         |  | 181,608 | 
|Loans and receivables securities               |  | 18    |  |         | 796     |  |         |  | 4,991   | 
|Available-for-sale securities                  |  | 19    |  |         | 10,069  |  |         |  | 7,828   | 
|Held-to-maturity investments                   |  | 20    |  |         | 6,648   |  |         |  | -       | 
|Macro hedge of interest rate risk              |  |       |  |         | 198     |  |         |  | (35)    | 
|Interests in other entities                    |  | 21    |  |         | 4,486   |  |         |  | 5,203   | 
|Intangible assets                              |  | 22    |  |         | 2,089   |  |         |  | 2,017   | 
|Property, plant and equipment                  |  | 23    |  |         | 1,204   |  |         |  | 1,266   | 
|Current tax assets                             |  |       |  |         | 137     |  |         |  | 198     | 
|Retirement benefit assets                      |  | 34    |  |         | 384     |  |         |  | 537     | 
|Other assets                                   |  | 25    |  |         | 1,302   |  |         |  | 1,159   | 
|Total assets                                   |  |       |  |         | 274,653 |  |         |  | 241,658 | 
|Liabilities                                    |  |       |  |         |         |  |         |  |         | 
|Deposits by banks                              |  | 26    |  |         | 19,741  |  |         |  | 28,268  | 
|Deposits by customers                          |  | 27    |  |         | 194,674 |  |         |  | 189,291 | 
|Derivative financial instruments               |  | 12    |  |         | 3,440   |  |         |  | 3,028   | 
|Financial liabilities designated at fair value |  | 29    |  |         | 321     |  |         |  | -       | 
|Debt securities in issue                       |  | 30    |  |         | 34,496  |  |         |  | -       | 
|Subordinated liabilities                       |  | 31    |  |         | 4,411   |  |         |  | 3,951   | 
|Macro hedge of interest rate risk              |  |       |  |         | 12      |  |         |  | (5)     | 
|Other liabilities                              |  | 32    |  |         | 2,504   |  |         |  | 2,073   | 
|Provisions                                     |  | 33    |  |         | 674     |  |         |  | 815     | 
|Deferred tax liabilities                       |  | 24    |  |         | 70      |  |         |  | 176     | 
|Retirement benefit obligations                 |  | 34    |  |         | 262     |  |         |  | 110     | 
|Total liabilities                              |  |       |  |         | 260,605 |  |         |  | 227,707 | 
|Equity                                         |  |       |  |         |         |  |         |  |         | 
|Share capital and other equity instruments     |  | 36    |  |         | 4,904   |  |         |  | 4,911   | 
|Share premium                                  |  | 36    |  |         | 5,620   |  |         |  | 5,620   | 
|Retained earnings                              |  |       |  |         | 3,449   |  |         |  | 3,354   | 
|Other reserves                                 |  |       |  |         | 75      |  |         |  | 66      | 
|Total shareholders equity                     |  |       |  |         | 14,048  |  |         |  | 13,951  | 
|Total liabilities and equity                   |  |       |  |         | 274,653 |  |         |  | 241,658 | 

The accompanying Notes to the Financial Statements form an integral part of these Financial Statements.

The profit after tax of the Company attributable to shareholders was £1,171m (2015: £115m). As permitted by Section 408 of the UK Companies Act 2006,
the Companys individual income statement has not been presented.

The Financial Statements were approved and authorised for issue by the Board on
22 February 2017 and signed on its behalf by:



|                                   |  |                        
|---------------------------------- |  | -----------------------
|Nathan Bostock                     |  | Antonio Roman          
|Chief Executive Officer            |  | Chief Financial Officer
|                                   | 
|Company Registered Number: 2294747 |  |                        





Santander UK plc177



---

##### Table of Contents



Annual Report 2016

Financial
statements









COMPANY CASH FLOW STATEMENT

For the years ended 31 December



|                                                                          |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|------------------------------------------------------------------------- |  | ------ |  | ------- | -------- |  | ------- |  | -------- | ------- |  |  | -------- | 
|                                                                          |  | Notes  |  | 2016
£m |          |  | 2015
£m |  |          | 2014
£m | 
|Cash flows from operating activities                                      |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Profit for the year                                                       |  |        |  |         | 1,171    |  |         |  | 115      |         |  |  | 1,346    | 
|Adjustments for:                                                          |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Non-cash items included in profit                                         |  |        |  |         | 1,540    |  |         |  | 1,603    |         |  |  | 2,166    | 
|Change in operating assets                                                |  |        |  |         | (18,334) |  |         |  | (15,710) |         |  |  | 50,829   | 
|Change in operating liabilities                                           |  |        |  |         | (2,603)  |  |         |  | 22,083   |         |  |  | (98,441) | 
|Corporation taxes paid                                                    |  |        |  |         | (393)    |  |         |  | (132)    |         |  |  | (59)     | 
|Effects of exchange rate differences                                      |  |        |  |         | 1,540    |  |         |  | (104)    |         |  |  | 66       | 
|Net cash flows from operating activities                                  |  | 38     |  |         | (17,079) |  |         |  | 7,855    |         |  |  | (44,093) | 
|Cash flows from investing activities                                      |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Purchase of property, plant and equipment and intangible assets           |  | 22, 23 |  |         | (337)    |  |         |  | (313)    |         |  |  | (372)    | 
|Proceeds from sale of property, plant and equipment and intangible assets |  |        |  |         | 41       |  |         |  | 28       |         |  |  | 13       | 
|Purchase of available-for-sale securities                                 |  |        |  |         | (2,870)  |  |         |  | (2,021)  |         |  |  | (4,236)  | 
|Proceeds from sale and redemption of available-for-sale securities        |  |        |  |         | 1,659    |  |         |  | 617      |         |  |  | 109      | 
|Purchase of held-to-maturity investments                                  |  |        |  |         | (6,669)  |  |         |  | -        |         |  |  | -        | 
|Net cash flows from investing activities                                  |  |        |  |         | (8,176)  |  |         |  | (1,689)  |         |  |  | (4,486)  | 
|Cash flows from financing activities                                      |  |        |  |         |          |  |         |  |          |         |  |  |          | 
|Issue of AT1 Capital Securities                                           |  | 36     |  |         | -        |  |         |  | 750      |         |  |  | 800      | 
|Issue of debt securities                                                  |  |        |  |         | 36,028   |  |         |  | 1,059    |         |  |  | -        | 
|Issuance costs of debt securities                                         |  |        |  |         | (6)      |  |         |  | (6)      |         |  |  | -        | 
|Repayment of debt securities                                              |  |        |  |         | (3,822)  |  |         |  | (1,251)  |         |  |  | (342)    | 
|Repurchase of other equity instruments                                    |  | 36     |  |         | (7)      |  |         |  | (99)     |         |  |  | (274)    | 
|Dividends paid on ordinary shares                                         |  | 10     |  |         | (419)    |  |         |  | (575)    |         |  |  | (447)    | 
|Dividends paid on other equity instruments                                |  | 10     |  |         | (128)    |  |         |  | (126)    |         |  |  | (40)     | 
|Net cash flows from financing activities                                  |  |        |  |         | 31,646   |  |         |  | (248)    |         |  |  | (303)    | 
|Change in cash and cash equivalents                                       |  |        |  |         | 6,391    |  |         |  | 5,918    |         |  |  | (48,882) | 
|Cash and cash equivalents at beginning of the year                        |  |        |  |         | 27,953   |  |         |  | 22,035   |         |  |  | 70,917   | 
|Cash and cash equivalents at the end of the year                          |  | 38     |  |         | 34,344   |  |         |  | 27,953   |         |  |  | 22,035   | 





178Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





COMPANY STATEMENT OF CHANGES IN EQUITY

For the years ended 31 December



|                                        |  |       |  |                                             |       |  |                  |  |       |                        |  |  |                     |  |  |                     |     |  |          |  |       |  |  |  |        | 
|--------------------------------------- |  | ----- |  | ------------------------------------------- | ----- |  | ---------------- |  | ----- | ---------------------- |  |  | ------------------- |  |  | ------------------- | --- |  | -------- |  | ----- |  |  |  | ------ | 
|                                        |  | Notes |  | Share capital andother equityinstruments
£m |       |  | Share premium
£m |  |       | Available-
for-sale £m |  |  | Cash flowhedging
£m |  |  | Retainedearnings
£m |     |  | Total
£m | 
|1 January 2016                          |  |       |  |                                             | 4,911 |  |                  |  | 5,620 |                        |  |  | 72                  |  |  |                     | (6) |  |          |  | 3,354 |  |  |  | 13,951 | 
|Profit for the year                     |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 1,171 |  |  |  | 1,171  | 
|Other comprehensive income, net of tax: |  |       |  |                                             |       |  |                  |  |       |                        |  |  |                     |  |  |                     |     |  |          |  |       |  |  |  |        | 
|- Available-for-sale securities         |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | (20)                |  |  |                     | -   |  |          |  | -     |  |  |  | (20)   | 
|- Cash flow hedges                      |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | 29  |  |          |  | -     |  |  |  | 29     | 
|- Pension remeasurement                 |  | 34    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (386) |  |  |  | (386)  | 
|Total comprehensive income for the year |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | (20)                |  |  |                     | 29  |  |          |  | 785   |  |  |  | 794    | 
|Repurchase of other equity instruments  |  | 36    |  |                                             | (7)   |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | -     |  |  |  | (7)    | 
|Dividends on ordinary shares            |  | 10    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (593) |  |  |  | (593)  | 
|Dividends on other equity instruments   |  | 10    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (128) |  |  |  | (128)  | 
|Tax on other equity instruments         |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 31    |  |  |  | 31     | 
|31 December 2016                        |  |       |  |                                             | 4,904 |  |                  |  | 5,620 |                        |  |  | 52                  |  |  |                     | 23  |  |          |  | 3,449 |  |  |  | 14,048 | 
|                                        |  |       |  |                                             |       |  |                  |  |       |                        |  |  |                     |  |  |                     |     |  |          |  |       |  |  |  |        | 
|1 January 2015                          |  |       |  |                                             | 4,244 |  |                  |  | 5,620 |                        |  |  | 23                  |  |  |                     | -   |  |          |  | 3,557 |  |  |  | 13,444 | 
|Profit for the year                     |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 115   |  |  |  | 115    | 
|Other comprehensive income, net of tax: |  |       |  |                                             |       |  |                  |  |       |                        |  |  |                     |  |  |                     |     |  |          |  |       |  |  |  |        | 
|- Available-for-sale securities         |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | 49                  |  |  |                     | -   |  |          |  | -     |  |  |  | 49     | 
|- Cash flow hedges                      |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | (6) |  |          |  | -     |  |  |  | (6)    | 
|- Pension remeasurement                 |  | 34    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 227   |  |  |  | 227    | 
|Total comprehensive income for the year |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | 49                  |  |  |                     | (6) |  |          |  | 342   |  |  |  | 385    | 
|Issue of AT1 Capital Securities         |  | 36    |  |                                             | 750   |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | -     |  |  |  | 750    | 
|Repurchase of other equity instruments  |  | 36    |  |                                             | (83)  |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (16)  |  |  |  | (99)   | 
|Dividends on ordinary shares            |  | 10    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (427) |  |  |  | (427)  | 
|Dividends on other equity instruments   |  | 10    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (126) |  |  |  | (126)  | 
|Tax on other equity instruments         |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 24    |  |  |  | 24     | 
|31 December 2015                        |  |       |  |                                             | 4,911 |  |                  |  | 5,620 |                        |  |  | 72                  |  |  |                     | (6) |  |          |  | 3,354 |  |  |  | 13,951 | 
|                                        |  |       |  |                                             |       |  |                  |  |       |                        |  |  |                     |  |  |                     |     |  |          |  |       |  |  |  |        | 
|1 January 2014                          |  |       |  |                                             | 3,709 |  |                  |  | 5,620 |                        |  |  | -                   |  |  |                     | -   |  |          |  | 2,617 |  |  |  | 11,946 | 
|Profit for the year                     |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 1,346 |  |  |  | 1,346  | 
|Other comprehensive income, net of tax: |  |       |  |                                             |       |  |                  |  |       |                        |  |  |                     |  |  |                     |     |  |          |  |       |  |  |  |        | 
|- Available-for-sale securities         |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | 23                  |  |  |                     | -   |  |          |  | -     |  |  |  | 23     | 
|- Other movements                       |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 21    |  |  |  | 21     | 
|- Pension remeasurement                 |  | 34    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | 109   |  |  |  | 109    | 
|Total comprehensive income for the year |  |       |  |                                             | -     |  |                  |  | -     |                        |  |  | 23                  |  |  |                     | -   |  |          |  | 1,476 |  |  |  | 1,499  | 
|Issue of AT1Capital Securities          |  | 36    |  |                                             | 800   |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | -     |  |  |  | 800    | 
|Repurchase of other equity instruments  |  | 36    |  |                                             | (265) |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (9)   |  |  |  | (274)  | 
|Dividends on ordinary shares            |  | 10    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (487) |  |  |  | (487)  | 
|Dividends on other equity instruments   |  | 10    |  |                                             | -     |  |                  |  | -     |                        |  |  | -                   |  |  |                     | -   |  |          |  | (40)  |  |  |  | (40)   | 
|31 December 2014                        |  |       |  |                                             | 4,244 |  |                  |  | 5,620 |                        |  |  | 23                  |  |  |                     | -   |  |          |  | 3,557 |  |  |  | 13,444 | 

The accompanying Notes to the Financial Statements form an integral part of these Financial Statements.





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Annual Report 2016

Financial
statements









1. ACCOUNTING POLICIES

These financial statements are prepared for Santander UK plc (the Company) and the Santander UK plc group (the Santander UK group) under the UK Companies Act 2006. The
principal activity of the Santander UK group is the provision of an extensive range of personal financial services, and a wide range of banking and financial services to personal, business and public sector customers.

Santander UK plc is a public limited company, incorporated in England and Wales having a registered office at 2 Triton Square, Regents Place, London, NW1 3AN,
phone number 0870-607-6000. It is an operating company undertaking banking and financial services transactions.

Basis of preparation

These financial statements incorporate the financial statements of the Company and entities controlled by the Company (its subsidiaries) made up to
31 December each year. The financial statements have been prepared on the going concern basis using the historical cost convention, as modified by the revaluation of available-for-sale financial assets, financial assets and financial
liabilities held at fair value through profit or loss and all derivative contracts, assets held for sale, retirement benefit obligations and cash-settled share-based payments, where applicable. An assessment of the appropriateness of the adoption of
the going concern basis of accounting is disclosed in the Directors statement of going concern set out in the Directors Report.

Compliance with
International Financial Reporting Standards

The Santander UK group Consolidated Financial Statements have been prepared in accordance with International
Financial Reporting Standards as issued by the International Accounting Standards Board (IASB), including interpretations issued by the IFRS Interpretations Committee (IFRS IC) of the IASB (together IFRS). The Santander UK group has also
complied with its legal obligation to comply with International Financial Reporting Standards as adopted by the European Union as there are no applicable differences between the two frameworks for the periods presented.

The Company financial statements have been prepared in accordance with International Financial Reporting Standards as adopted by the European Union and as applied in
accordance with the provision of the UK Companies Act 2006.

Disclosures required by IFRS 7 Financial Instruments: Disclosure relating to the nature and
extent of risks arising from financial instruments can be found in the Risk review which form an integral part of these financial statements.

Future accounting
developments

The Santander UK group has not yet adopted the following significant new or revised standards and interpretations, and amendments thereto, which
have been issued but which are not yet effective for the Santander UK group:



|a) | IFRS 9 Financial Instruments (IFRS 9)  In July 2014, the International Accounting Standards Board (IASB) approved IFRS 9 to replace IAS 39 Financial Instruments: Recognition and
Measurement.
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

IFRS 9 sets out the requirements for recognition and measurement of financial instruments. The main new
developments of the standard are discussed below.

Classification and measurement of financial assets and financial liabilities: Under IFRS 9,
financial assets are classified on the basis of the business model within which they are held and their contractual cash flow characteristics. These factors determine whether the financial assets are measured at amortised cost, fair value through
other comprehensive income or fair value through profit or loss. For many financial assets, the classification and measurement outcomes will be similar to IAS 39. However, under IFRS 9, embedded derivatives are not separated from host financial
assets and equity securities are measured at fair value either through profit or loss or, in certain circumstances, an irrevocable election may be made to present fair value movements in other comprehensive income. The requirements for the
classification and measurement of financial liabilities were carried forward unchanged from IAS 39, however, the requirements relating to the fair value option for financial liabilities were changed to address own credit risk and, in particular, the
presentation of gains and losses within other comprehensive income. Based on the analysis performed to date, Santander UK generally expects:

| | - | The vast majority of financial assets which are classified as loans and receivables under IAS 39 will be continue to be measured at amortised cost under IFRS 9;
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Most debt securities classified as available-for-sale financial assets will be measured at amortised cost or fair value through other comprehensive income, with some being measured at fair value through profit or loss;
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Treasury and other eligible bills classified as available-for-sale financial assets will be measured at amortised cost or fair value through other comprehensive income depending upon the business model in which they are
held; and
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Certain loans currently designated at fair value through profit or loss under IAS 39 may be reclassified to amortised cost where they are held within a business model whose objective is to hold the assets to collect
contractual cash flows and those cash flows represent solely payments of principal and interest on the principal outstanding.
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Impairment: IFRS 9 introduces fundamental changes to the impairment of
financial assets measured at amortised cost or at fair value through other comprehensive income, lease receivables and certain commitments to extend credit and financial guarantee contracts. It is no longer necessary for losses to be incurred before
credit losses are recognised. Instead, under IFRS 9, an entity always accounts for expected credit losses (ECLs), and any changes in those ECLs. The ECL approach must reflect both current and forecast changes in macroeconomic data over a horizon
that extends from 12 months to the remaining life of the asset if a borrowers credit risk is deemed to have deteriorated significantly at the reporting date compared to the origination date. The estimate of ECLs, should reflect an unbiased and
probability-weighted amount that is determined by evaluating a range of possible outcomes and considering reasonable and supportable information at the reporting date. Similar to the current incurred credit loss provisioning approach, management
will exercise judgement as to whether additional adjustments are required in order to adequately reflect possible events or current conditions that could affect credit risk.

For financial assets, an ECL is the current value of the difference between the contractual cash flows owed to the entity according to the contract and
the cash flows which the entity expects to receive. For undrawn loan commitments, an ECL is the current value of the difference between the contractual cash flows owed to the entity and the cash flows which the entity expects to receive if the loan
is drawn.

An assessment of each facilities credit risk profile will determine whether they are to be allocated to one of three stages:

| | - | Stage 1: when it is deemed there has been no significant increase in credit risk since initial recognition, a loss allowance equal to a 12-month ECL  i.e. the proportion of lifetime expected losses resulting from
possible default events within the next 12-months - will be applied;
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Stage 2: when it is deemed there has been a significant increase in credit risk since initial recognition, but no credit impairment has materialised, a loss allowance equal to the lifetime ECL i.e.
lifetime expected loss resulting from all possible defaults throughout the residual life of a facility  will be applied; and
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Stage 3: when the facility is considered credit impaired, a loss allowance equal to the lifetime ECL will be applied. Similar to incurred losses under IAS 39, objective evidence of credit impairment is required.
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The assessment of whether a significant increase in credit risk has occurred since initial recognition involves the application of
both quantitative measures and qualitative factors, requires management judgement and is a key aspect of the IFRS 9 methodology.

Hedge
accounting: The general hedge accounting requirements align more closely with risk management practices and establish a more principle-based approach thereby allowing hedge accounting to be applied to a wider variety of hedging instruments and
risks. Macro hedge accounting is being dealt with as a separate project. Until such time as that project is complete, and to remove any potential conflict between any existing macro hedge accounting undertaken under IAS 39 and the new general hedge
accounting requirements of IFRS 9, entities can choose to continue to apply the existing hedge accounting requirements in IAS 39. Based on the analysis performed to date, Santander UK group expects to continue IAS 39 hedge accounting. No changes are
currently being implemented to hedge accounting policies and practices.

Transition: IFRS 9 has been endorsed for use in the European Union.
The mandatory effective date of IFRS 9 is 1 January 2018. The classification and measurement and impairment requirements will be applied retrospectively by adjusting the opening balance sheet at the date of initial application. There is no
requirement to restate comparative information. For annual periods beginning before 1 January 2018, an entity may elect to early apply only the requirements for the presentation of gains and losses on financial liabilities designated at fair
value through profit or loss. Santander UK has not elected to early apply the revised presentation of fair value gains and losses relating to its own credit risk on such liabilities in these Consolidated Financial Statements but may elect to apply
this presentation in 2017. Santander UK is assessing the likely impacts of the new financial asset classification & measurement and impairment requirements. Upon the satisfactory completion of this work, including formal testing of the ECL
models during 2017, Santander UK will quantify the indicative impact when that information is known or reasonably estimable, and by no later than the end of 2017. It is not yet practicable to quantify the effect of IFRS 9 in these Consolidated
Financial Statements.

With reference to the impairment under IFRS 9, the following additional information is provided in accordance with the
recommendations of the Enhanced Disclosure Task Force (EDTF) published in their 30 November 2015 report entitled Impact of Expected Credit Loss Approaches on Bank Risk Disclosures regarding applying the key principles within an
expected credit loss (ECL) approach and the risk management organisation, processes and key functions.

How Santander UK interprets and intends to
apply the key principles within an ECL approach

In forecasting ECLs, Santander UK is leveraging retail and corporate credit risk models used for
underwriting, portfolio management and regulatory capital.

These credit risk measurement tools principally capture idiosyncratic (customer and
facility) risk drivers and when transformed into 12-month probability of default (PD), exposure at default (EAD) and loss given default (LGD) estimates, form the basis for quantifying ECL.

Outputs from these models are incorporated into a new modelling framework developed for IFRS 9, which combines other factors that explicitly capture
systemic effects (relating to changes in credit conditions) and the maturity of the exposure.

Systemic effects are accounted for by using the
outputs of existing macroeconomic stress testing models as factors in the ECL calculation, while the addition of time related factors (such as time since last rating) enable the forecasting of risk, for each individual loan, to be extended over the
lifetime of the exposure and reflect economic forecasts.

The ability to forecast beyond 12 months is further supplemented by the introduction of a
new survival rate (SR) model which predicts the likelihood that an exposure will still be open and not defaulted at any point during its remaining life (accounting for the fact that a proportion of loans will redeem early).





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Annual Report 2016

Financial
statements









For term loans the output of the PD, EAD, LGD and SR models are multiplied together to derive a measure of ECL for each month to the end of the
contractual period. The resulting ECL forecast is then discounted using the effective interest rate to reflect the time value of money. Summing each monthly ECL to the end of the contractual term gives the lifetime ECL, while the 12-month ECL is
calculated by summing the first 12-monthly ECL values only. For revolving credit facilities the lifetime period is determined to be the point at which either the SR model predicts all exposures have closed or the ECL value is zero through the
effects of early closure and discounting.

IFRS 9 ECLs will be based on macroeconomic inputs reflecting a set of scenarios that will incorporate, as
a minimum; a base scenario, an upside scenario and a downside scenario based on various macroeconomic variables, e.g. GDP, house prices, unemployment rates, etc. Each scenario will be assigned a probability weighting that reflects the likelihood of
occurrence. The resulting ECL for each scenario will be combined to give an unbiased, probability weighted ECL value.

The governance framework for
generating and reviewing the scenarios and weights will be similar to the current processes to assess risk appetite and manage stress testing, which incorporate the views of subject matter experts across numerous business functions and a comparison
with external benchmarks prior to running forecasting models. The process for monitoring control triggers, the performance of forecasting models, approving management judgments, etc., will also be similar to existing Santander UK governance
processes.

IFRS 9 requires the calculation of ECL to be based on either possible defaults within a period of 12 months following the reporting date
(12-month ECL) or defaults arising throughout the residual life of the exposure (Lifetime ECL). The forecast horizon will be determined according to a stage allocation assessment, whereby an underlying facility is assigned to one of three stages as
set out above. The assessment of whether there has been significant increase in credit risk since initial recognition, for the purpose of moving exposures between stages, will incorporate a number of quantitative, qualitative and days past due
backstop tests. The determination incorporates a measure of the change in default risk between initial recognition and the reporting date.

Santander UKs accounting policy for derecognition of financial assets is set out further below. If the contractual terms of a financial asset are
modified, Santander UK will evaluate whether the cash flows of the modified asset are substantially different, and whether the contractual rights to cash flows from the original financial asset are deemed to have expired. In this case, the original
financial asset will be derecognised and a new financial asset will be recognised.

Santander UKs risk management organisation, processes
and key functions

The implementation strategy for the new impairment process is structured around the following key phases:

| | 1. | Quantitative modellers determine appropriate data sources and modelling methodology;
| | -- | ------------------------------------------------------------------------------------

| | 2. | An independent model validation team undertake a separate validation exercise, as per the existing model governance process;
| | -- | ----------------------------------------------------------------------------------------------------------------------------

| | 3. | The models and interpretations are assessed to ensure technical accounting compliance with the standard; and
| | -- | ------------------------------------------------------------------------------------------------------------

| | 4. | Business analysts prepare design and functional specifications, which form the basis of the model build and processing framework, and undertake unit, functional and acceptance testing in preparation for go live
implementation.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Established in 2015, the UK IFRS 9 Steering Group agreed an overarching governance process which ultimately reports
into the Board Audit Committee. A number of cross-functional working groups have been mobilised to opine and make proposals on model design and integration, technical accounting and implementation. Approvals and ratification are sought at a series
of Management Committees and Forums, whilst key risks, issues, dependencies and progress against plans - aligned to material portfolios/ key design considerations - are tracked at the Steering Group.

Whilst still under consideration, we do not anticipate significant changes in the governance processes for impairment with the exception of the need to
approve the economic scenarios and weights used in generating forward looking ECLs.



|b) | IFRS 15 Revenue from Contracts with Customers (IFRS 15)  In May 2014, the IASB issued IFRS 15. The effective date of IFRS 15 is 1 January 2018. The standard establishes the principles that shall
be applied in connection with revenue from contracts with customers including the core principle that the recognition of revenue must depict the transfer of promised goods or services to customers in an amount that reflects the entitlement to
consideration in exchange for those goods and services. IFRS 15 applies to all contracts with customers but does not apply to lease contracts, insurance contracts, financial instruments and certain non-monetary exchanges. It is expected that a
significant proportion of the Santander UK groups revenue will be outside the scope of IFRS 15. The impact of the standard is currently being assessed, however, it is not yet practicable to quantify the effect of IFRS 15 on these Consolidated
Financial Statements.
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|c) | IFRS 16 Leases (IFRS 16)  In January 2016, the IASB issued IFRS 16. The standard is effective for annual periods beginning on or after 1 January 2019. Earlier adoption is permitted for entities
that apply IFRS 15 at or before the date of initial application of IFRS 16. IFRS 16 sets out the principles for the recognition, measurement, presentation and disclosure for both lessees and lessors. For lessee accounting, IFRS 16 introduces a
single lessee accounting model and requires a lessee to recognise a right-of-use asset representing its right to use the underlying leased asset and a lease liability representing its obligation to make lease payments for all leases with a term of
more than 12 months, unless the underlying asset is of low value. For lessor accounting, IFRS 16 substantially carries forward the lessor accounting requirements from the existing leasing standard (IAS 17) and a lessor continues to classify its
leases as operating leases or finance leases and to account for those two types of leases differently. At the date of publication of these Consolidated Financial Statements the standard is awaiting EU endorsement. The impact of the standard is
currently being assessed, however, it is not yet practicable to quantify the effect of IFRS 16 on these Consolidated Financial Statements.
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Comparative information

As required by US public company reporting requirements, these financial statements include two years of comparative information for the consolidated income statement,
consolidated statement of comprehensive income, consolidated statement of changes in equity, consolidated statement of cash flows and related Notes.

Consolidation

a) Subsidiaries

The Consolidated
Financial Statements incorporate the financial statements of Santander UK plc and entities (including structured entities) controlled by the Company and its subsidiaries. Control is achieved where the Company has (i) power over the investee;
(ii) is exposed, or has rights, to variable returns from its involvement with the investee; and (iii) has the ability to use its power to affect its returns. The Company reassesses whether or not it controls an investee if facts and
circumstances indicate that there are changes to one or more of the three elements of control listed above.

When the Company has less than a majority of the voting
rights of an investee, it has power over the investee when the voting rights are sufficient to give it the practical ability to direct the relevant activities of the investee unilaterally. The Company considers all relevant facts and circumstances
in assessing whether or not the Companys voting rights in an investee are sufficient to give it power, including:

|- | The size of the Companys holding of voting rights relative to the size and dispersion of holdings of the other vote holders
|- | ----------------------------------------------------------------------------------------------------------------------------

|- | Potential voting rights held by the Company, other vote holders or other parties
|- | --------------------------------------------------------------------------------

|- | Rights arising from other contractual arrangements
|- | --------------------------------------------------

|- | Any additional facts and circumstances that indicate that the Company has, or does not have, the current ability to direct the relevant activities at the time that decisions need to be made, including voting patterns at
previous shareholders meetings.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Consolidation of a subsidiary begins when the Company obtains control over the subsidiary and ceases when the
Company loses control of the subsidiary. Specifically, the results of a subsidiary acquired or disposed of during the year are included in the consolidated income statement and the consolidated statement of comprehensive income from the date the
Company gains control until the date when the Company ceases to control the subsidiary. Inter-company transactions, balances and unrealised gains on transactions between Santander UK group companies are eliminated; unrealised losses are also
eliminated unless the cost cannot be recovered.

The acquisition method of accounting is used to account for the acquisition of subsidiaries which meet the
definition of a business. The cost of an acquisition is measured at the fair value of the assets given up, shares issued or liabilities undertaken at the date of acquisition. Acquisition related costs are expensed as incurred. The excess of the cost
of acquisition, as well as the fair value of any interest previously held, over the fair value of the Santander UK groups share of the identifiable net assets of the acquired subsidiary, associate or business at the date of acquisition is
recorded as goodwill. When the Santander UK group loses control of a subsidiary, the profit or loss on disposal is calculated as the difference between (i) the aggregate of the fair value of the consideration received and the fair value of any
retained interest and (ii) the previous carrying amount of the assets (including goodwill), less liabilities of the subsidiary and any non-controlling interests. Amounts previously recognised in other comprehensive income in relation to the
subsidiary are accounted for (i.e. reclassified to profit or loss or transferred directly to retained earnings) in the same manner as would be required if the relevant assets or liabilities are disposed of. The fair value of any investment retained
in the former subsidiary at the date when control is lost is regarded as the fair value on initial recognition for subsequent accounting under IAS 39 Financial Instruments: Recognition and Measurement or, when applicable, the costs on
initial recognition of an investment in an associate or jointly controlled entity.

Transactions between entities under common control, i.e. fellow subsidiaries of
Banco Santander SA (the ultimate parent) are outside the scope of IFRS 3  Business Combinations, and there is no other guidance for such situations under IFRS. The Santander UK group elects to account for transactions between
entities under common control for cash consideration in a manner consistent with the approach under IFRS 3R, unless the transaction represents a reorganisation of entities within the Santander UK group, in which case the transaction is accounted for
at its historical cost. Business combinations between entities under common control transacted for non-cash consideration are accounted for by the Santander UK group in a manner consistent with group reconstruction relief under UK GAAP (merger
accounting).

Interests in subsidiaries are eliminated during the preparation of the Consolidated Financial Statements. Interests in subsidiaries in the Company
unconsolidated financial statements are held at cost subject to impairment.

b) Joint ventures

Joint ventures are joint arrangements whereby the parties that have joint control of the arrangement have rights to the net assets of the joint arrangement. Joint control
is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require unanimous consent of the parties sharing control. Accounting policies have been aligned to the extent there are
differences from the Santander UK groups policies.

The Santander UK groups investments in joint ventures are accounted for by the equity method of
accounting and are initially recorded at cost and adjusted each year to reflect the Santander UK groups share of the post-acquisition results of the joint venture. When the Santander UK groups share of losses of a joint venture exceed
the Santander UK groups interest in that joint venture, the Santander UK group discontinues recognising its share of further losses. Additional losses are recognised only to the extent that the Santander UK group has incurred legal or
constructive obligations or made payments on behalf of the joint venture.





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Foreign currency translation

Items included in the
financial statements of each entity (including foreign branch operations) in the Santander UK group are measured using the currency that best reflects the economic substance of the underlying events and circumstances relevant to that entity (the
functional currency). The Consolidated Financial Statements are presented in sterling, which is the functional currency of the Company.

Income statements and cash
flows of foreign entities are translated into the Santander UK groups presentation currency at average exchange rates for the year and their balance sheets are translated at the exchange rates ruling on 31 December.

Exchange differences arising from the translation of the net investment in foreign entities are recognised in other comprehensive income. When a foreign entity is sold,
such exchange differences are recognised in the income statement as part of the gain or loss on sale.

Foreign currency transactions are translated into the
functional currency of the entity involved at the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation of monetary assets and
liabilities denominated in foreign currencies are recognised in the income statement unless recognised in other comprehensive income in connection with a cash flow hedge. Non-monetary items denominated in a foreign currency measured at historical
cost are not retranslated. Exchange rate differences arising on non-monetary items measured at fair value are recognised in the consolidated income statement except for differences arising on available-for-sale equity securities which are recognised
in other comprehensive income.

Revenue recognition

a) Interest income and expense

Interest income on financial assets that are
classified as loans and receivables, held-to-maturity investments or available-for-sale securities, and interest expense on financial liabilities other than those at fair value through profit or loss are determined using the effective interest
method. The effective interest rate is the rate that discounts the estimated future cash payments or receipts over the expected life of the instrument or, when appropriate, a shorter period, to the net carrying amount of the financial asset or
financial liability. When calculating the effective interest rate, the future cash flows are estimated after considering all the contractual terms of the instrument excluding future credit losses. The calculation includes all amounts paid or
received by the Santander UK group that are an integral part of the overall return, direct incremental transaction costs related to the acquisition, issue or disposal of the financial instrument and all other premiums or discounts. Interest income
on assets classified as loans and receivables and available-for-sale, interest expense on liabilities classified at amortised cost, and interest income and expense on hedging derivatives are recognised in interest and similar income and interest
expense and similar charges in the income statement.

In accordance with IFRS, the Santander UK group recognises interest income on assets after they have been
written down as a result of an impairment loss. Interest continues to be accrued on all loans and the element of interest that is not anticipated to be recovered is provided for. Interest income on impaired financial assets is recognised using the
rate of interest used to discount the future cash flows for the purpose of measuring the impairment loss.

b) Fee and commission income and expense

Fees and commissions that are not an integral part of the effective interest rate are recognised when the service is provided, or on the performance of a significant act.
For retail and corporate products, fee and commission income consists principally of collection services fees, commission on foreign currencies, commission and other fees received from retailers for processing credit card transactions, fees received
from other credit card issuers for providing cash advances for their customers through the Santander UK groups branch and ATM networks, annual fees payable by credit card holders and fees for non-banking financial products. Revenue from these
income streams is recognised when the service is provided.

For insurance products, fee and commission income consists principally of commissions earned on the sale
of building and contents insurance, life protection insurance and payment cover insurance. Revenue from these income streams is recognised when the service is provided.

Fee and commission income which forms an integral part of the effective interest rate of a financial instrument (e.g. certain loan commitment fees) is recognised as an
adjustment to the effective interest rate and recorded in Interest income.

c) Dividend income

Except for equity securities classified as trading assets or financial assets held at fair value through profit or loss, described below, dividend income is recognised
when the right to receive payment is established. This is the ex-dividend date for equity securities.

d) Net trading and other income

Net trading and other income comprises all gains and losses from changes in the fair value of financial assets and liabilities held at fair value through profit or loss
(including financial assets and liabilities held for trading, trading derivatives and designated as fair value through profit or loss), together with related interest income, expense, dividends and changes in fair value of any derivatives managed in
conjunction with these assets and liabilities. Changes in fair value of derivatives in a fair value hedging relationship are also recognised in net trading and other income. Net trading and other income also include income from operating lease
assets, and profits/(losses) arising on the sales of property, plant and equipment and subsidiary undertakings.





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Borrowing costs

Borrowing costs directly attributable to the acquisition, construction or production of qualifying assets, including computer software, which are assets that necessarily
take a substantial period of time to develop for their intended use, are added to the cost of those assets, until such time as the assets are substantially ready for their intended use. All other borrowing costs are recognised in profit or loss in
the period in which they occur.

Pensions and other post-retirement benefits

The Santander UK group operates various pension schemes. The schemes are generally funded through payments to insurance companies or trustee-administered funds, as
determined by periodic actuarial calculations. A defined benefit scheme is a pension scheme that guarantees an amount of pension benefit to be provided, usually as a function of one or more factors such as age, years of service or compensation. A
defined contribution plan is a pension scheme under which the Santander UK group pays fixed contributions as they fall due into a separate entity (a fund). The pension paid to the member at retirement is based on the amount in the separate fund for
each member. The Santander UK group has no legal or constructive obligations to pay further contributions into the fund to top up benefits to a certain guaranteed level. Pension costs are charged to the Administration
expenses, within the line item Operating expenses before impairment losses, provisions and charges with the net interest on the defined benefit asset or liability included within Net interest income in the income
statement.

a) Defined benefit schemes

The asset or liability recognised
in respect of defined benefit pension schemes is the present value of the defined benefit obligation at the balance sheet date, less the fair value of plan assets. The defined benefit obligation is calculated annually by independent actuaries using
the projected unit credit method. The assets of the schemes are measured at their fair values at the balance sheet date. Full actuarial valuations of the Santander UK groups principal defined benefit schemes are carried out on a triennial
basis. Each schemes Trustee is responsible for the actuarial valuations and in doing so considers or relies in part on a report of a third party expert.

The
present value of the defined benefit obligation is estimated by projecting forward the growth in current accrued pension benefits to reflect inflation and salary growth to the date of pension payment, then discounted to present value using an
interest rate applicable to high-quality AA rated corporate bonds of the same currency and which have terms to maturity closest to the terms of the scheme liabilities, adjusted where necessary to match those terms. In determining the value of scheme
liabilities, demographic and financial assumptions are made by management about mortality, inflation, discount rates, pension increases and earnings growth, based on past experience. Financial assumptions are based on market conditions at the
balance sheet date and can generally be derived objectively.

Demographic assumptions require a greater degree of estimation and judgement to be applied to
externally derived data. Any surplus or deficit of scheme assets over liabilities is recognised in the balance sheet as an asset (surplus) or liability (deficit). An asset is only recognised to the extent that the surplus can be recovered through
reduced contributions in the future or through refunds from the scheme. The income statement includes the net interest income/expense on the net defined benefit liability/asset, current service cost and any past service cost and gain or loss on
settlement. Remeasurement of defined benefit pension schemes, including return on scheme assets (excludes amounts included in net interest), actuarial gains and losses arising from changes in financial assumptions and changes in actuarial
assumptions and the effect of the changes to the asset ceiling (if applicable) are recognised in other comprehensive income.

Remeasurement recognised in other
comprehensive income will not be reclassified to the income statement. Past-service costs are recognised as an expense in the income statement at the earlier of when the scheme amendment or curtailment occurs and when the related restructuring costs
or termination benefits are recognised. Curtailments include the impact of significant reductions in the number of employees covered by a scheme, or amendments to the terms of the scheme so that a significant element of future service will no longer
qualify for benefits or will qualify only for reduced benefits. Curtailment gains and losses on businesses that meet the definition of discontinued operations are included in profit or loss for the year from discontinued operations. Gains and losses
on settlements are recognised when the settlement occurs.

b) Defined contribution plans

For defined contribution plans, the Santander UK group pays contributions to publicly or privately administered pension insurance plans on a mandatory, contractual or
voluntary basis. Once the contributions have been paid, the Santander UK group has no further payment obligation. The regular contributions constitute net periodic costs for the year in which they are due and are included in staff costs which are
presented in Administration expenses in the income statement.

c) Post-retirement medical benefit plans

Post-retirement medical benefit liabilities are determined using the Projected Unit Credit Method, with actuarial valuations updated at each year-end. The expected
benefit costs are accrued over the period of employment using an accounting methodology similar to that for the defined benefit pension scheme.

Share-based payments

The Santander UK group engages in cash-settled and equity-settled share-based payment transactions in respect of
services received from certain of its employees. Shares of the Santander UK groups parent, Banco Santander SA are purchased in the open market by the Santander UK group (for the Employee Sharesave scheme) or are purchased by Banco Santander SA
or another Banco Santander company (for awards granted under the Long-Term Incentive Plan and the Deferred Shares Bonus Plan) to satisfy share options as they vest.

Options granted under the Employee Sharesave scheme are accounted for as cash-settled share-based payment transactions. Awards granted under the Long-Term Incentive Plan
and Deferred Shares Bonus Plan are accounted for as equity-settled share-based payment transactions.





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The fair value of the services received is measured by reference to the fair value of the shares or share options initially on the date of the grant for both the cash and
equity settled share-based payments and then subsequently at each reporting date for the cash settled share-based payments. The cost of the employee services received in respect of the shares or share options granted is recognised in the income
statement within administration expenses, over the period that the services are received, which is the vesting period.

A liability equal to the portion of the goods
or services received is recognised at the current fair value determined at each balance sheet date for cash-settled share-based payments. A liability equal to the amount to be reimbursed to Banco Santander SA is recognised at the current fair value
determined at the grant date for equity-settled share-based payments.

The fair value of the options granted under the Employee Sharesave scheme is determined using
an option pricing model, which takes into account the exercise price of the option, the current share price, the risk free interest rate, the expected volatility of the Banco Santander SA share price over the life of the option and the dividend
growth rate. The fair value of the awards granted for the Long-Term Incentive Plan was determined at the grant date using an option pricing model, which takes into account the share price at grant date, the risk free interest rate, the expected
volatility of the Banco Santander SA share price over the life of the award and the dividend growth rate. Vesting conditions included in the terms of the grant are not taken into account in estimating fair value, except for those that include terms
related to market conditions. Non-market vesting conditions are taken into account by adjusting the number of shares or share options included in the measurement of the cost of employee service so that ultimately, the amount recognised in the income
statement reflects the number of vested shares or share options.

Where an award has been modified, as a minimum, the expense of the original award continues to be
recognised as if it had not been modified. Where the effect of a modification is to increase the fair value of an award or increase the number of equity instruments, the incremental fair value of the award or incremental fair value of the
modification of the award is recognised in addition to the expense of the original grant, measured at the date of modification, over the modified vesting period.

A
cancellation that occurs during the vesting period is treated as an acceleration of vesting, and recognised immediately for the amount that would otherwise have been recognised for services over the vesting period.

Goodwill and other intangible assets

Goodwill
represents the excess of the cost of an acquisition, as well as the fair value of any interest previously held, over the fair value of the Santander UK groups share of the identifiable net assets of the acquired subsidiary, associate, or
business at the date of acquisition. Goodwill on the acquisition of subsidiaries and businesses is included in intangible assets. Goodwill on acquisitions of associates is included as part of investment in associates. Goodwill is tested for
impairment at each balance sheet date, or more frequently when events or changes in circumstances dictate, and carried at cost less accumulated impairment losses. Gains and losses on the disposal of an entity or business include the carrying amount
of goodwill relating to the entity or business sold.

Other intangible assets are recognised if they arise from contracted or other legal rights or if they are
capable of being separated or divided from the Santander UK group and sold, transferred, licensed, rented or exchanged. The value of such intangible assets is amortised on a straight-line basis over the useful economic life of the assets in
question, which ranges from three to seven years. Other intangible assets are reviewed annually for impairment indicators and tested for impairment where indicators are present.

Software development costs are capitalised when they are direct costs associated with identifiable and unique software products that are expected to provide future
economic benefits and the cost of these products can be measured reliably. These costs include payroll, the costs of materials and services and directly attributable overheads. Internally developed software meeting these criteria and externally
purchased software are classified in intangible assets on the balance sheet and amortised on a straight-line basis over their useful life of three to seven years, unless the software is an integral part of the related computer hardware, in which
case it is treated as property, plant and equipment as described below. Capitalisation of costs ceases when the software is capable of operating as intended. Costs associated with maintaining software programmes are expensed as incurred.

Property, plant and equipment

Property, plant and
equipment include owner-occupied properties (including leasehold properties), office fixtures and equipment and computer software. Property, plant and equipment are carried at cost less accumulated depreciation and accumulated impairment losses. A
review for indications of impairment is carried out at each reporting date. Gains and losses on disposal are determined by reference to the carrying amount and are reported in net trading and other income. Repairs and renewals are charged to the
income statement when the expenditure is incurred. Internally developed software meeting the criteria set out in Goodwill and other intangible assets above and externally purchased software are classified in property, plant and equipment
on the balance sheet where the software is an integral part of the related computer hardware (e.g. operating system of a computer).

Classes of property, plant and
equipment are depreciated on a straight-line basis over their useful life, as follows:



|                              |  |                       
|----------------------------- |  | ----------------------
|Owner-occupied properties     |  | Not exceeding 50 years
|Office fixtures and equipment |  | 3 to 15 years         
|Computer software             |  | 3 to 7 years          

Depreciation is not charged on freehold land and assets under construction.





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Financial assets and liabilities

Financial assets and liabilities are initially recognised when the Santander UK group becomes a party to the contractual terms of the instrument. The Santander UK group
determines the classification of its financial assets and liabilities at initial recognition. Financial assets are classified as financial assets at fair value through profit or loss, loans and receivables, available-for-sale financial assets and
held-to-maturity investments. Financial assets that are classified at fair value through profit or loss, which have not been designated as such or are not accounted for as derivatives, or assets classified as available-for-sale, may subsequently in
rare circumstances, be reclassified from the fair value through profit or loss category to the loans and receivables, available-for-sale or held-to-maturity categories. In order to meet the criteria for reclassification, the asset must no longer be
held for the purpose of selling or repurchasing in the near-term and must also meet the definition of the category into which it is to be reclassified had it not been required to classify it at fair value through profit or loss at initial
recognition. The reclassified value is the fair value of the asset at the date of reclassification. The Santander UK group has not utilised this option and therefore has not reclassified any assets from the fair value through profit or loss category
that were classified as such at initial recognition. Financial liabilities are classified as fair value through profit or loss if they are either held for trading or otherwise designated at fair value through profit or loss on initial recognition.

Financial assets are derecognised when the rights to receive cash flows have expired or the Santander UK group has transferred its contractual right to receive the
cash flows from the assets and either: (1) substantially all the risks and rewards of ownership have been transferred; or (2) the Santander UK group has neither retained nor transferred substantially all of the risks and rewards, but has
transferred control. Financial liabilities are derecognised when extinguished, cancelled or expired.

A regular way purchase is a purchase of a financial asset under
a contract whose terms require delivery of the asset within the timeframe established generally by regulation or convention in the market place concerned. Regular way purchases of financial assets classified as loans and receivables, issues of
equity or financial liabilities measured at amortised cost are recognised on settlement date; all other regular way purchases and issues are recognised on trade date.

a) Financial assets and liabilities at fair value through profit or loss

Financial assets and financial liabilities are classified as fair value through profit or loss if they are either held for trading or otherwise designated at fair value
through profit or loss on initial recognition.

Financial assets and financial liabilities are classified as held for trading if they are derivatives or if they are
acquired or incurred principally for the purpose of selling or repurchasing in the near-term, or form part of a portfolio of financial instruments that are managed together and for which there is evidence of short-term profit taking.

In certain circumstances financial assets and financial liabilities other than those that are held for trading are designated at fair value through profit or loss where
this results in more relevant information because it significantly reduces a measurement inconsistency that would otherwise arise from measuring assets or liabilities or recognising the gains or losses on them on a different basis, where the assets
or liabilities are managed and their performance evaluated on a fair value basis, or where a financial asset or financial liability contains one or more embedded derivatives which are not closely related to the host contract.

Financial assets and financial liabilities classified as fair value through profit or loss are initially recognised at fair value and transaction costs are taken
directly to the income statement. Gains and losses arising from changes in fair value are included directly in the income statement.

Derivative financial
instruments, trading assets and liabilities and financial assets and liabilities designated at fair value are classified as fair value through profit or loss.

b)
Loans and receivables

Loans and receivables are non-derivative financial assets with fixed or determinable payments, that are not quoted in an active market and
which are not classified as available-for-sale or fair value through profit or loss. They arise when the Santander UK group provides money or services directly to a customer with no intention of trading the loan. Loans and receivables are initially
recognised at fair value including direct and incremental transaction costs. They are subsequently valued at amortised cost, using the effective interest method. Loans and receivables consist of loans and advances to banks, loans and advances to
customers, and loans and receivables securities.

c) Available-for-sale financial assets

Available-for-sale financial assets are non-derivative financial assets that are designated as available-for-sale and are not categorised into any of the other categories
described. They are initially recognised at fair value including direct and incremental transaction costs. They are subsequently held at fair value. Gains and losses arising from changes in fair value of available-for-sale securities are recognised
in other comprehensive income until sale or until determined to be impaired when the cumulative gain or loss or impairment losses are transferred to the income statement. Where the financial asset is interest-bearing, interest is determined using
the effective interest method.

Income on investments in equity shares, debt instruments and other similar interests is recognised in the income statement as and
when dividends are declared and interest is accrued. Impairment losses and foreign exchange translation differences on monetary items are recognised in the income statement.





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d) Held-to-maturity investments

Held-to-maturity investments are non-derivative
financial assets with fixed or determinable payments and fixed maturities that the Santander UK groups management has the positive intention and ability to hold to maturity other than:

|- | Those that the Santander UK group designates upon initial recognition as at fair value through profit or loss;
|- | --------------------------------------------------------------------------------------------------------------

|- | Those that the Santander UK group designates as available-for-sale; and
|- | -----------------------------------------------------------------------

|- | Those that meet the definition of loans and receivables.
|- | --------------------------------------------------------

These are initially recognised at fair value including direct
and incremental transaction costs and measured subsequently at amortised cost, using the effective interest method, less any provision for impairment.

A sale or
reclassification of a more than insignificant amount of held-to-maturity investments would result in the reclassification of all held-to-maturity investments to available-for-sale financial assets.

e) Borrowings

Borrowings (which include deposits by banks, deposits by
customers, debt securities in issue and subordinated liabilities) are recognised initially at fair value, being their issue proceeds (fair value of consideration received) net of transaction costs incurred. Borrowings are subsequently stated at
amortised cost or fair value through profit or loss dependent on designation at initial recognition. Savings accounts and time deposits are interest-bearing.

Preference shares which carry a contractual obligation to transfer economic benefits are classified as financial liabilities and are presented in subordinated
liabilities. The coupon on these preference shares is recognised in the income statement as interest expense on an amortised cost basis using the effective interest method.

f) Other financial liabilities

All other financial liabilities are initially
recognised at fair value net of transaction costs incurred. They are subsequently stated at amortised cost, using the effective interest method.

Contracts involving
the receipt of cash on which customers receive an index-linked return are accounted for as equity index-linked deposits. The principal products are Capital Guaranteed/Protected Products which give the customers a limited participation in the upside
growth of an equity index. In the event the index falls in price, a cash principal element is guaranteed/protected. The equity index-linked deposits contain embedded derivatives. These embedded derivatives, in combination with the principal cash
deposit element, are designed to replicate the investment performance profile tailored to the return agreed in the contracts with customers. The cash principal element is accounted for as deposits by customers at amortised cost. The embedded
derivatives are separated from the host instrument and are separately accounted for as derivative financial instruments.

g) Sale and repurchase agreements
(including stock borrowing and lending)

Securities sold subject to a commitment to repurchase them at a predetermined price (repos) under which substantially all
the risks and rewards of ownership are retained by the Santander UK group remain on the balance sheet and a liability is recorded in respect of the consideration received. Securities purchased under commitments to resell (reverse repos) are not
recognised on the balance sheet and the consideration paid is recorded as an asset. The difference between the sale and repurchase price is treated as trading income in the income statement, except where the repo is not treated as part of the
trading book, in which case the difference is recorded in interest income or expense.

Securities lending and borrowing transactions are generally secured, with
collateral taking the form of securities or cash advanced or received. Securities lent or borrowed are not reflected on the balance sheet. Collateral in the form of cash received or advanced is recorded as a deposit or a loan. Collateral in the form
of securities is not recognised.

h) Day One profit adjustments

The fair
value of a financial instrument on initial recognition is generally its transaction price (that is, the fair value of the consideration given or received). However, sometimes the fair value will be based on other observable current market
transactions in the same instrument, without modification or repackaging, or on a valuation technique whose variables include only data from observable markets, such as interest rate yield curves, option volatilities and currency rates. When such
evidence exists, the Santander UK group recognises a trading gain or loss at inception (Day One gain or loss), being the difference between the transaction price and the fair value. When significant unobservable parameters are used, the entire Day
One gain or loss is deferred and is recognised in the income statement over the life of the transaction until the transaction matures, is closed out, the valuation inputs become observable or the Santander UK group enters into an offsetting
transaction.

Derivative financial instruments

Derivative financial instruments (derivatives) are contracts or agreements whose value is derived from one or more underlying indices or asset values inherent in the
contract or agreement, which require no or little initial net investment and are settled at a future date. Transactions are undertaken in interest rate, cross currency, equity, residential property and other index-related swaps, forwards, caps,
floors, swaptions, as well as credit default and total return swaps, equity index contracts and exchange traded interest rate futures, and equity index options.

Derivatives are held for trading or for risk management purposes. Derivatives are classified as held for trading unless they are designated as being in a hedge
relationship. The Santander UK group chooses to designate certain derivatives as in a hedging relationship if they meet specific criteria, as further described within hedge accounting below.

Derivatives are recognised initially (on the date on which a derivative contract is entered into), and are subsequently remeasured, at their fair value. Fair values of
exchange-traded derivatives are obtained from quoted market prices. Fair values of over-the-counter derivatives are obtained using valuation techniques, including discounted cash flow and option pricing models.





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Derivatives may be embedded in other financial instruments, such as the conversion option in a
convertible bond. Embedded derivatives are treated as separate derivatives when their economic characteristics and risks are not closely related to those of the host contract; the terms of the embedded derivative would meet the definition of a
stand-alone derivative if they were contained in a separate contract; and the combined contract is not held for trading or designated at fair value. These embedded derivatives are measured at fair value with changes in fair value recognised in the
income statement.

Contracts containing embedded derivatives are not subsequently reassessed for separation unless either there has been a change in the terms of the
contract which significantly modifies the cash flows (in which case the contract is reassessed at the time of modification) or the contract has been reclassified (in which case the contract is reassessed at the time of reclassification).

All derivatives are carried as assets when their fair value is positive and as liabilities when their fair value is negative, except where netting is permitted. The
method of recognising fair value gains and losses depends on whether derivatives are held for trading or are designated as hedging instruments and, if the latter, the nature of the risks being hedged. All gains and losses from changes in the fair
value of derivatives held for trading are recognised in the income statement, and included within net trading and other income.

Offsetting
financial assets and liabilities

Financial assets and liabilities including derivatives are offset and the net amount reported in the balance sheet when there
is a legally enforceable right to set off the recognised amounts and there is an intention to settle on a net basis, or realise the asset and settle the liability simultaneously. The Santander UK group is party to a number of arrangements, including
master netting arrangements under industry standard agreements which facilitate netting of transactions in jurisdictions where netting agreements are recognised and have legal force. The netting arrangements do not generally result in an offset of
balance sheet assets and liabilities for accounting purposes, as transactions are usually settled on a gross basis.

Hedge accounting

The Santander UK group applies hedge accounting to represent, to the maximum possible extent permitted under accounting standards, the economic effects of its
risk management strategies. Derivatives are used to hedge exposures to interest rates, exchange rates and certain indices such as retail price indices.

At the time
a financial instrument is designated as a hedge (i.e. at the inception of the hedge), the Santander UK group formally documents the relationship between the hedging instrument(s) and hedged item(s), its risk management objective and strategy for
undertaking the hedge. The documentation includes the identification of each hedging instrument and respective hedged item, the nature of the risk being hedged (including the benchmark interest rate being hedged in a hedge of interest rate risk) and
how the hedging instruments effectiveness in offsetting the exposure to changes in the hedged items fair value attributable to the hedged risk is to be assessed. Accordingly, the Santander UK group formally assesses, both at the
inception of the hedge and on an ongoing basis, whether the hedging derivatives have been and will be highly effective in offsetting changes in the fair value attributable to the hedged risk during the period that the hedge is designated. A hedge is
normally regarded as highly effective if, at inception and throughout its life, the Santander UK group can expect, and actual results indicate, that changes in the fair value or cash flow of the hedged items are effectively offset by changes in the
fair value or cash flow of the hedging instrument. If at any point it is concluded that it is no longer highly effective in achieving its documented objective, hedge accounting is discontinued.

Where derivatives are held for risk management purposes, and when transactions meet the required criteria for documentation and hedge effectiveness, the derivatives may
be designated as either: (i) hedges of the change in fair value of recognised assets or liabilities or firm commitments (fair value hedges); (ii) hedges of the variability in highly probable future cash flows attributable to a recognised
asset or liability, or a forecast transaction (cash flow hedges); or (iii) a hedge of a net investment in a foreign operation (net investment hedges). The Santander UK group applies fair value hedge accounting and cash flow hedge accounting but
not hedging of a net investment in a foreign operation.

a) Fair value hedge accounting

Changes in the fair value of derivatives that are designated and qualify as fair value hedges are recorded in the income statement, together with the changes in the fair
value of the hedged asset or liability that are attributable to the hedged risk. Where the hedged item is measured at amortised cost, the fair value changes due to the hedged risk adjust the carrying amount of the hedged asset or liability. Changes
in the fair value of portfolio hedged items are presented separately in the consolidated balance sheet in macro hedge of interest rate risk and recognised in the income statement within net trading and other income. If the hedge no longer meets the
criteria for hedge accounting, changes in the fair value of the hedged item attributable to the hedged risk are no longer recognised in the income statement. For fair value hedges of interest rate risk, the cumulative adjustment that has been made
to the carrying amount of the hedged item is amortised to the income statement using the effective interest method over the period to maturity. For portfolio hedged items, the cumulative adjustment is amortised to the income statement using the
straight line method over the period to maturity.

b) Cash flow hedge accounting

The effective portion of changes in the fair value of qualifying cash flow hedges is recognised in other comprehensive income in the cash flow hedging reserve. The gain
or loss relating to the ineffective portion is recognised immediately in the income statement. Amounts accumulated in equity are reclassified to the income statement in the periods in which the hedged item affects profit or loss. When a hedging
instrument expires or is sold, or when a hedge no longer meets the criteria for hedge accounting, any cumulative gain or loss existing in equity at that time remains in equity and is recognised in the income statement when the forecast transaction
is ultimately recognised in the income statement. When a forecast transaction is no longer expected to occur, the cumulative gain or loss that was reported in equity is immediately transferred to the income statement.

The Santander UK group is exposed to cash flow interest rate risk on its floating rate assets and foreign currency risk on its fixed rate debt issuances denominated in
foreign currency. Cash flow hedging is used to hedge the variability in cash flows arising from both these risks.

Securitisation transactions

The Santander UK group has entered into certain arrangements where undertakings have issued mortgage-backed and other asset-backed securities or have entered
into funding arrangements with lenders in order to finance specific loans and advances to customers. As the Santander UK group has retained substantially all the risks and rewards of the underlying assets, such financial instruments continue to be
recognised on the balance sheet, and a liability recognised for the proceeds of the funding transaction.





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Impairment of financial assets

At each balance sheet
date the Santander UK group assesses whether there is objective evidence that a financial asset or group of financial assets is impaired. A financial asset or a group of financial assets is impaired and impairment losses are incurred only if there
is objective evidence of impairment as a result of one or more events that occurred after the initial recognition of the asset (a loss event) and that loss event (or events) has an impact on the estimated future cash flows of the
financial asset or group of financial assets that can be reliably estimated. In the case of equity investments classified as available-for-sale, a significant or prolonged decline in the fair value of the security below its cost is considered an
indicator that the assets are impaired.

Assets carried at amortised cost

For loans and advances, loans and receivables securities and held-to-maturity investments, the amount of the loss is measured as the difference between the assets
carrying amount and the present value of estimated future cash flows (excluding future credit losses that have not been incurred) discounted at the financial assets original effective interest rate. The carrying amount of the asset is reduced
and the amount of the loss is recognised in profit or loss. If a loan or held-to-maturity investment has a variable interest rate, the discount rate for measuring any impairment loss is the current effective interest rate determined under the
contract.

If, in a subsequent period, the amount of the impairment loss decreases and the decrease can be related objectively to an event occurring after the
impairment was recognised (such as an improvement in the debtors credit rating), the reversal of the previously recognised impairment loss is recognised in profit or loss.

More detailed policies for certain portfolios measured at amortised cost are described below.

a) Loans and advances

Impairment loss allowances for loans and advances, less
amounts released and recoveries of amounts written off are charged to the line item Impairment losses on loans and advances in the income statement. The impairment loss allowances are deducted from the Loans and advances to
banks, Loans and advances to customers and Loans and receivables securities line items on the balance sheet.

i) Retail assets

Retail customers are assessed either individually or collectively for impairment. Potential indicators of loss events which may be evidence of impairment for
retail borrowers may include:

|- | Missed payments of capital or interest
|- | --------------------------------------

|- | The borrower notifying the Santander UK group of current or likely financial distress
|- | -------------------------------------------------------------------------------------

|- | Request from a borrower to change contractual terms as a result of the borrowers financial difficulty (i.e. forbearance)
|- | -------------------------------------------------------------------------------------------------------------------------

|- | Arrears on other accounts held by the borrower.
|- | -----------------------------------------------

Individual assessment

For individually assessed assets, the Santander UK group measures the amount of the loss as the difference between the carrying amount of the asset and the present value
of the estimated future cash flows from the asset discounted at the assets original effective interest rate.

Collective assessment

In making a collective assessment for impairment, financial assets are grouped together according to their credit risk characteristics. These can include grouping by
product, loan-to-value, brand, geography, type of customer and previous insolvency events. For each such portfolio or sub-segment of the portfolio, future cash flows are estimated through the use of historical loss experience. The historical loss
experience is adjusted to include the effects of changes in current economic, behavioural and other conditions that cannot be successfully depicted solely from historical experience. The loss is discounted at the effective interest rate, except
where portfolios meet the criteria for short-term receivables. The unwind of the discount over time is reported through interest and other similar income within the income statement, with an increase to the impairment loss allowances on the balance
sheet. Loans for which evidence of potential loss have been specifically identified are group together for the purpose of calculating an allowance for observed losses. Loans for which no evidence of loss has been specifically identified on an
individual basis are grouped together according to their credit risk characteristics for the purpose of calculating an allowance for incurred but not observed (IBNO) losses. Such losses will only be individually identified in the future.

Observed impaired loss allowance

An impairment loss allowance for observed
losses is established for all non-performing loans where it is increasingly probable that some of the capital or interest will not be repaid or recovered through enforcement of any applicable security. The allowance for observed losses is determined
on a collective (or portfolio) basis for groups of loans with similar credit risk characteristics. The length of time before a loan is regarded as non-performing is typically when the customer fails to make payments when contractually due for three
months or longer, although there can be additional qualifying criteria depending upon the product. For additional information on the definition of non-performing loans (NPLs), see Credit risk management  risk measurement and
control in the Risk review.

For mortgages and other secured advances, the allowance for observed losses is calculated as the product of the account
outstanding balance (exposure) at the reporting date, the estimated proportion that will be repossessed (the loss propensity) and the percentage of exposure which will result in a loss (the loss ratio). The loss propensities for the observed segment
(i.e. where the loan is classified as non-performing) represents the percentage that will ultimately be written off, or repossessed for secured advances. Loss propensities are based on recent historical experience, typically covering a period of no
more than the most recent twelve months in the year under review. The loss ratio is based on actual cases which have been repossessed and sold using the most recent twelve month average data, segmented by LTV, and is then discounted using the
effective interest rate.





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For unsecured advances, such as unsecured personal loans, credit cards and overdrafts, the
allowance for observed losses is calculated as the product of the number of accounts in the portfolio, the estimated proportion of accounts that will be written off, the estimated proportion of such cases that will result in a loss (the loss factor)
and the average loss incurred (the loss per case). The loss per case is based on actual cases using the most recent six month average data of losses that have been incurred, and is then discounted using the effective interest rate.

Based on historical experience, the gross loss ratio or gross loss per case is realised in cash several months after the customer first defaults, during which time
interest and fees and charges continue to accrue on the account. The future fees and charges included in the gross loss ratio or gross loss per case are removed and the balance discounted so as to calculate the present value of the loss ratio or
loss per case. The discounted loss ratio or loss per case for accounts where a payment has already been missed is higher than for accounts that are up to date because the discounting effect is lower reflecting the fact that the process to recover
the funds is further advanced.

IBNO impairment loss allowances

An
allowance for IBNO losses is established for loans which are either:

|- | Performing and no evidence of loss has been specifically identified on an individual basis but because the loans that are not yet past due are known from past experience to have deteriorated since the initial decision
to lend was made (for example, where a borrower has not yet missed a payment but is experiencing financial difficulties at the reporting date, e.g. due to a loss of employment, divorce or bereavement), or
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | In arrears and not classified as non-performing.
|- | ------------------------------------------------

The impairment loss calculation resembles the one explained above for
the observed segment except that for the IBNO segment:

|- | Where the account is currently up to date, the loss propensity represents the percentage of such cases that are expected to miss a payment in the appropriate emergence period and which will ultimately be written off
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | Where the account is delinquent, the loss propensity represents the percentage of such cases that will ultimately be written off.
|- | ---------------------------------------------------------------------------------------------------------------------------------

Emergence period

This is the period which the Santander UK groups
statistical analysis shows to be the period in which losses that had been incurred but have not been separately identified at the balance sheet date, become evident as the loans turn into past due. The emergence period is taken into consideration
when determining the loss propensities for performing IBNO segment. Based on the Santander UK groups statistical analysis, the emergence period is six months for unsecured lending and twelve months for secured lending. The longer emergence
period for secured lending reflects the fact that a customer is more likely to default on unsecured debt before defaulting on secured lending. The factors considered in determining the length of the emergence period for unsecured lending are recent
changes in customers debit/credit payment profiles and credit scores. The factors considered for secured lending are the frequency and duration of exceptions from adherence to the contractual payment schedule.

ii) Corporate assets

Impairment losses are assessed individually for
corporate assets that are individually significant and collectively for corporate assets that are not individually significant.

Individual assessment

At each balance sheet date, the Santander UK group conducts impairment reviews to assess whether there is objective evidence of impairment for individually significant
corporate assets. A specific observed impairment is established for all individually significant loans that have experienced a loss event such as where:

|- | An asset has a payment default which has been outstanding for three months or more
|- | ----------------------------------------------------------------------------------

|- | Non-payment defaults have occurred but where it has become evident that a forbearance exercise will be undertaken due to the inability of the borrower to meet its current contractual repayment schedule
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | It is becoming probable that the borrower will enter bankruptcy or other financial reorganisation
|- | -------------------------------------------------------------------------------------------------

|- | The borrower has a winding up notice issued or insolvency event
|- | ---------------------------------------------------------------

|- | The borrower has had event(s) occur which are likely to adversely impact upon their ability to meet their financial obligations (e.g. where a customer loses a key client or contract)
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | The borrower has regularly and persistently missed/delayed payments but where the account has been maintained below three months past due
|- | -----------------------------------------------------------------------------------------------------------------------------------------

|- | The customer loan is due to mature within six months and where the prospects of achieving a refinancing are considered low.
|- | ---------------------------------------------------------------------------------------------------------------------------

In such situations the asset is transferred to the Commercial Banking Restructuring & Recoveries team. As part of their impairment reviews, an assessment is
undertaken of the expected future cash flows (including, where appropriate, cash flows through enforcement of any applicable security held) in relation to the relevant asset, discounted at the loans original effective interest rate. The result
is compared to the current carrying value of the asset. Any shortfall evidenced as a result of such a review will be assessed and recorded as an observed specific impairment loss allowance.

Collective assessment

Observed impairment loss allowances

A collective impairment loss allowance is established for loans which are not individually significant and have suffered a loss event. These non-individually significant
loans are grouped together according to their credit risk characteristics and the allowance for observed losses is determined on a collective basis by applying loss rates (i.e. estimated loss given default) derived from analysis of historical loss
data of observed losses.

IBNO impairment loss allowances

Loans for which
no evidence of loss has been specifically identified on an individual basis are grouped together according to their credit risk characteristics for the purpose of calculating an IBNO allowance for incurred inherent losses. Such losses will only be
individually identified in the future. As soon as information becomes available which identifies incurred losses on individual loans within the group, those loans are removed from the group and assessed on an individual basis for impairment or
included in the observed collective assessment above depending on their individual significance.





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The allowance for IBNO losses is determined on a portfolio basis using the following factors:

|- | Historical loss experience in portfolios of similar credit risk characteristics (for example, by product)
|- | ---------------------------------------------------------------------------------------------------------

|- | The estimated period between an impairment event occurring and the loss being identified and evidenced by the establishment of an observed loss allowance against the individual loan (known as the emergence period, as
discussed below)
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | Managements judgement as to whether current economic and credit conditions are such that the actual level of incurred inherent losses at the balance sheet date is likely to be greater or less than that suggested
by historical experience.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Emergence period

This is the
period in which losses that had been incurred but have not been separately identified become evident. The emergence period spans between six to twelve months according to the corporate portfolio being assessed and is estimated having regard to
historic experience and loan characteristics across the portfolio. The factors considered in determining the length of the emergence period include the frequency of the management information received or any change in account utilisation behaviour.

iii) Assets subject to forbearance

To support Retail and Corporate
customers that encounter actual or apparent financial difficulties, the Santander UK group may grant a concession, whether temporary or permanent, to amend contractual amounts or timings where a customers financial distress indicates a
potential that satisfactory repayment may not be made within the original terms and conditions of the contract. These arrangements are known as forbearance. There are different risk characteristics associated with loans that are subject to
forbearance as compared to loans that are not. A range of forbearance arrangements may be entered into by the Santander UK group, reflecting the different risk characteristics of such loans. The Santander UK groups forbearance programmes are
described in the credit risk section in the Risk review.

Retail assets

Mortgages

The main types of forbearance offered are capitalisation or a term
extension, subject to customer negotiation and vetting. These accounts are reported in arrears until the arrears are capitalised, at which point the accounts will be transferred to the performing category. However, accounts which were
classified as non-performing at the point forbearance is agreed continue to be reported as non-performing until the payments received post forbearance equate to the amount of arrears outstanding at the point of forbearance.
The impairment provision on these accounts is based on the delinquency cycle in which the account was classified when it entered forbearance, unless the accounts status has further deteriorated since then, in which case the impairment
provision will be based on the current status.

The impairment loss allowances on these accounts are calculated in the same manner as on any other account, using the
Santander UK groups collective assessment methodology. In making a collective assessment for impairment, accounts are grouped according to their credit risk characteristics. For each category of loans, accounts are individually assigned a loss
propensity based on a defined behavioural scorecard which reflects any history of forbearance. The loss propensity applied in the collective assessment calculation is higher for forborne accounts than for other performing loans reflecting the higher
risk of default attached to these accounts.

Unsecured personal loans (UPLs)

The main type of forbearance offered is reduced repayment arrangements. Where accounts undergoing forbearance are in arrears, these continue to be reported in the
delinquency cycle, until all arrears are capitalised or paid up, at which point the accounts will be transferred to the performing category. The impairment provision on these accounts is based on the delinquency cycle in which the
account was classified when it entered forbearance, unless the accounts status has further deteriorated since then, in which case the impairment provision will be based on the current status. Where the accounts reside in the
performing category as a result of forbearance, the impairment allowance requirements are based on default probability that take account of the higher inherent risk in the forborne asset relative to other performing assets.

Other unsecured (credit cards and overdrafts)

The main type of forbearance
offered is reduced repayment arrangements. Reduced payment arrangements are treated for impairment purposes in the same way as UPLs above.

Corporate assets

For corporate borrowers, the main types of forbearance offered are term extensions or interest-only concessions and in limited circumstances, other forms of
forbearance options (including debt-for-equity swaps), subject to customer negotiation and vetting. If such accounts were classified in the non-performing loan category prior to the forbearance, they continue to be classified as
non-performing until evidence of compliance with the new terms is demonstrated (typically over a period of at least three months) before being reclassified as substandard. If the account was categorised as performing at the time the
revised arrangements were agreed, the case is reclassified to substandard upon completion of the forbearance agreement.

Once a substandard asset has
demonstrated continued compliance with the new terms and the risk profile is deemed to have improved it may be reclassified as a performing asset. Until then, impairment loss allowances for such loans are assessed individually, taking
into account the value of collateral held as confirmed by third party professional valuations and the available cash flow to service debt over the period of the forbearance. These impairment loss allowances are assessed and reviewed regularly. In
the case of a debt for equity conversion, the converted debt is written off against the existing impairment loss allowance at the point forbearance is granted.

iv) Reversals of impairment

If in a subsequent period, the amount of an
impairment loss reduces and the reduction can be related objectively to an event occurring after the impairment was recognised, the excess is written back by reducing the impairment loss allowance accordingly. The write-back is recognised in the
income statement.





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v) Write-off

For secured loans, a write-off is only made when all collection procedures have been exhausted and the security has been sold or from claiming on any mortgage indemnity
guarantee or other insurance. In the corporate portfolio, there may be occasions where a write-off occurs for other reasons, for example, following a consensual restructure or refinancing of the debt or where the debt is sold for strategic reasons
into the secondary market at a value lower than the face value of the debt.

There is no threshold based on past due status beyond which all secured loans are
written off as there can be significant variations in the time needed to enforce possession and sale of the security, especially due to the different legal frameworks that apply in different regions of the UK. For unsecured loans, a write-off is
only made when all internal avenues of collecting the debt have been exhausted and the debt is passed over to external collection agencies. A past due threshold is applied to unsecured debt where accounts that are 180 days past due are written off
unless there is a dispute awaiting resolution. Contact is made with customers with the aim to achieve a realistic and sustainable repayment arrangement. Litigation and/or enforcement of security is usually carried out only when the steps described
above have been undertaken without success.

All write-offs are on a case-by-case basis, taking account of the exposure at the date of write-off, after accounting
for the value from any collateral or insurance held against the loan. The exception to this is in cases where fraud has occurred, where the exposure is written off once full investigations have been completed and the probability of recovery is
minimal. The time span between discovery and write-off will be short and may not result in an impairment loss allowance being raised. The write-off policy is regularly reviewed. Write-offs are charged against previously established impairment loss
allowances.

vi) Recoveries

Recoveries of impairment losses are not
included in the impairment loss allowance, but are taken to income and offset against impairment losses. Recoveries of impairment losses are classified in the income statement as Impairment losses on loans and advances.

b) Loans and receivables securities and held-to-maturity investments

Loans
and receivables securities and held-to-maturity investments are assessed individually for impairment. An impairment loss is incurred if there is objective evidence that a loss event has occurred since initial recognition of the assets that has an
impact on the estimated future cash flows of the asset. Potential indicators of loss events include significant financial distress of the issuer and default or delinquency in interest and principal payments (breach of contractual terms).

Loans and receivables securities and held-to-maturity investments are monitored for potential impairment through a detailed expected cash flow analysis, where
appropriate, taking into account the structure and underlying assets of each individual security. Once specific events give rise to a reasonable expectation that future anticipated cash flows may not be received, the asset originating these doubtful
cash flows will be deemed to be impaired with the impairment loss being measured as the difference between the expected future cash flows discounted at the original effective interest rate and the carrying value of the asset.

c) Assets classified as available-for-sale

The Santander UK group assesses at
each balance sheet date whether there is objective evidence that an available-for-sale financial asset is impaired. In addition to the criteria for loans and advances and loans and receivables securities set out above, the assessment involves
reviewing the financial circumstances (including creditworthiness) and future prospects of the issuer, assessing the future cash flows expected to be realised and, in the case of equity shares, considering whether there has been a significant or
prolonged decline in the fair value of the security below its cost. The cumulative loss is measured as the difference between the acquisition cost and the current fair value, less any impairment loss previously reported in the income statement and
is removed from other comprehensive income and recognised in the income statement. For impaired debt instruments, further impairment losses are recognised where there has been a further negative impact on expected future cash flows.

If, in a subsequent period, the fair value of a debt instrument classified as available-for-sale increases and the increase is due to an event occurring after the
impairment loss was recognised in the income statement (with objective evidence to support this), the impairment loss is reversed through the income statement. If, in a subsequent period, the fair value of an equity instrument classified as
available-for-sale increases, all such increases in the fair value are treated as a revaluation, and are recognised in other comprehensive income. Impairment losses recognised on equity instruments are not reversed through the income statement.

Impairment of non-financial assets

At each balance
sheet date, or more frequently when events or changes in circumstances dictate, property plant and equipment (including operating lease assets) and intangible assets (including goodwill) are assessed for indicators of impairment. If indications are
present, these assets are subject to an impairment review.

The impairment review comprises a comparison of the carrying amount of the asset or cash generating unit
with its recoverable amount: the higher of the assets or cash-generating units fair value less costs to sell and its value in use. The cash-generating unit represents the lowest level at which non-financial assets including goodwill is
monitored for internal management purposes and is not larger than an operating segment.

The fair value is the price that would be received to sell an asset or paid
to transfer a liability in an orderly transaction between market participants at the measurement date. Value in use is calculated by discounting managements expected future cash flows obtainable as a result of the assets continued use,
including those resulting from its ultimate disposal, at a market based discount rate on a pre-tax basis. The recoverable amounts of goodwill have been based on value in use calculations.





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The carrying values of property, plant and equipment, goodwill and other intangible assets are written down by the amount of any impairment and the loss is recognised in
the income statement in the period in which it occurs. A previously recognised impairment loss relating to property, plant and equipment may be reversed in part or in full when a change in circumstances leads to a change in the estimates used to
determine the property, plant and equipments recoverable amount. The carrying amount of the property, plant and equipment will only be increased up to the amount that would have been had the original impairment not been recognised. Impairment
losses on goodwill are not reversed. For conducting goodwill impairment reviews, cash generating units are the lowest level at which management monitors the return on investment on assets.

Leases

a) The Santander UK group as lessor

Operating lease assets are recorded at cost and depreciated over the life of the asset after taking into account anticipated residual values. Operating lease rental
income and depreciation is recognised on a straight-line basis over the life of the asset. Amounts due from lessees under finance leases and hire purchase contracts are recorded as receivables at the amount of the Santander UK groups net
investment in the leases. Finance lease income is allocated to accounting periods so as to reflect a constant periodic rate of return on the Santander UK groups net investment outstanding in respect of the leases and hire purchase contracts.

b) The Santander UK group as lessee

The Santander UK group enters into
operating leases for the rental of equipment or real estate. Payments made under such leases are charged to the income statement on a straight-line basis over the period of the lease. When an operating lease is terminated before the lease period has
expired, any payment to be made to the lessor by way of penalty is recognised as an expense in the period in which termination takes place.

If the lease agreement
transfers the risk and rewards of the asset, the lease is recorded as a finance lease and the related asset is capitalised. At inception, the asset is recorded at the lower of the present value of the minimum lease payments or fair value and
depreciated over the lower of the estimated useful life and the life of the lease. The corresponding rental obligations are recorded as borrowings. The aggregate benefit of incentives, if any, is recognised as a reduction of rental expense over the
lease term on a straight-line basis.

Income taxes, including deferred taxes

The tax expense represents the sum of the income tax currently payable and deferred income tax.

Income tax payable on profits, based on the applicable tax law in each jurisdiction, is recognised as an expense in the period in which profits arise. Taxable profit
differs from net profit as reported in the income statement because it excludes items of income or expense that are taxable or deductible in other years and it further excludes items that are never taxable or deductible. The liability for current
tax is calculated using tax rates that have been enacted or substantively enacted by the balance sheet date. Current taxes associated with the repurchase of equity instruments are reported directly in equity.

A current tax liability for the current or prior period is measured at the amount expected to be paid to the tax authorities. Where the amount of the final tax liability
is uncertain or where a position is challenged by a taxation authority, the liability recognised is the most likely outcome. Where a most likely outcome cannot be determined, a weighted average basis is applied.

Deferred income tax is the tax expected to be payable or recoverable on income tax losses available to carry forward and on temporary differences arising between the tax
bases of assets and liabilities and their carrying amounts in the Consolidated Financial Statements and is accounted for using the balance sheet liability method. Deferred tax liabilities are generally recognised for all taxable temporary
differences and deferred tax assets are recognised to the extent that it is probable that taxable profits will be available against which the assets may be utilised as they reverse. Such deferred tax liabilities are not recognised if the temporary
difference arises from the initial recognition of goodwill. Deferred tax assets and liabilities are not recognised from the initial recognition of other assets (other than in a business combination) and liabilities in a transaction that affects
neither the taxable profit nor the accounting profit.

Deferred tax is calculated at the tax rates that are expected to apply in the period when the liability is
settled or the asset is realised based on rates enacted or substantively enacted at the balance sheet date. Deferred tax is charged or credited in the income statement, except when it relates to items recognised in other comprehensive income or
directly in equity, in which case the deferred tax is also recognised in other comprehensive income or directly in equity. Deferred tax liabilities are recognised for taxable temporary differences arising on investments in subsidiaries except where
the Santander UK group is able to control reversal of the temporary difference and it is probable that it will not reverse in the foreseeable future. The Santander UK group reviews the carrying amount of deferred tax assets at each balance sheet
date and reduces it to the extent that it is no longer probable that sufficient taxable profits will be available to allow all or part of the asset to be recovered.

Deferred tax relating to actuarial gains and losses on defined benefits is recognised in other comprehensive income. Deferred tax relating to fair value re-measurements
of available-for sale investments and cash flow hedging instruments is charged or credited directly to other comprehensive income and is subsequently recognised in the income statement when the deferred fair value gain or loss is recognised in the
income statement.

Deferred and current tax assets and liabilities are only offset when they arise in the same tax reporting group and where there is both the legal
right and the intention to settle on a net basis or to realise the asset and settle the liability simultaneously.





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| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Cash and cash equivalents

For the purposes of the cash flow statement, cash and cash equivalents comprise balances with less than three months maturity from the date of acquisition, including cash
and non-restricted balances with central banks, treasury bills and other eligible bills, loans and advances to banks and short-term investments in securities.

Balances with central banks represent amounts held at the Bank of England and the US Federal Reserve as part of the Santander UK groups liquidity management
activities. In addition, it includes certain minimum cash balances held for regulatory purposes required to be maintained with the Bank of England.

Provisions

Provisions are recognised for present obligations arising as consequences of past events where it is more likely than not that a
transfer of economic benefits will be necessary to settle the obligation, and it can be reliably estimated.

Conduct provisions are made for the estimated cost of
making redress payments with respect to the past sales of products, based on conclusions regarding the number of claims that will be received, including the number of those that will be upheld, the estimated average settlement per case and other
related costs. Provision is made for the anticipated cost of restructuring, including redundancy costs, when an obligation exists. An obligation exists when the Santander UK group has a detailed formal plan for restructuring a business, has raised
valid expectations in those affected by the restructuring, and has started to implement the plan or announce its main features.

When a leasehold property ceases to
be used in the business, provision is made where the unavoidable costs of the future obligations relating to the lease are expected to exceed anticipated rental income. The net costs are discounted using market rates of interest to reflect the
long-term nature of the cash flows.

Provision is made for irrevocable loan commitments, other than those classified as held for trading, within impairment loss
allowances if it is probable that the facility will be drawn and the resulting loan will be recognised at a value less than the cash advanced.

Contingent
liabilities are possible obligations whose existence will be confirmed only by certain future events or present obligations where the transfer of economic benefit is uncertain or cannot be reliably measured. Contingent liabilities are not recognised
but are disclosed unless they are remote.

Financial guarantee contracts

Financial guarantee contracts are contracts that require the issuer to make specified payments to reimburse the holder for a loss it incurs because a specified debtor
fails to make payments when due in accordance with the terms of a debt instrument. The Santander UK group accounts for guarantees that meet the definition of a financial guarantee contract at fair value on initial recognition. In subsequent periods,
these guarantees are measured at the higher of the initial fair value less cumulative amortisation and the amount that would be recognised as a provision in accordance with IAS 37.

Share capital

a) Share issue costs

Incremental external costs directly attributable to the issue of new shares are deducted from equity net of related income taxes.

b) Dividends

Dividends on ordinary shares are recognised in equity in the
period in which the right to receive payment is established.





Santander UK plc195



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##### Table of Contents



Annual Report 2016

Financial
statements









CRITICAL ACCOUNTING POLICIES AND AREAS OF SIGNIFICANT MANAGEMENT JUDGEMENT

The preparation of the Consolidated Financial Statements requires management to make estimates and judgements that affect the reported amount of assets and liabilities
at the date of the Consolidated Financial Statements and the reported amount of income and expenses during the reporting period. Management evaluates its estimates and judgements on an ongoing basis. Management bases its estimates and judgements on
historical experience and on various other factors that are believed to be reasonable under the circumstances. Actual results may differ from these estimates under different assumptions or conditions.

The following accounting estimates and judgements are considered important to the portrayal of the Santander UK groups financial results and financial condition
because: (i) they are highly susceptible to change from period to period as assumptions are made to calculate the estimates, and (ii) any significant difference between the estimated amounts and actual amounts could have a material impact
on the Santander UK groups future financial results and financial condition.

In calculating each estimate, a range of outcomes was calculated based
principally on managements conclusions regarding the input assumptions relative to historic experience. The actual estimates were based on what management concluded to be the most probable assumptions within the range of reasonably possible
assumptions.

a) Impairment loss allowances for loans and advances to customers

The Santander UK group estimates impairment losses for loans and advances to customers, loans and receivables securities, and loans and advances to banks as described in
the accounting policy Impairment of financial assets. Managements assumptions about impairment losses are based on past performance, past customer behaviour, the credit quality of recent underwritten business and general economic
conditions, which are not necessarily an indication of future losses.

At 31 December 2016, impairment allowances held against loans and advances to customers
totalled £989m (2015: £1,157m, 2014: £1,439m). The net impairment loss (i.e. after recoveries) for loans and advances to customers recognised in 2016 was £67m (2015: £66m, 2014: £258m). In calculating impairment
loss allowances, a range of outcomes was calculated, either for each individual loan or by portfolio taking account of the uncertainty relating to economic conditions. For retail lending, the range was based on different management assumptions as to
loss propensity and loss ratio relative to historic experience. For corporate lending, the range reflects different realisation assumptions in respect of collateral held.

If management had used different assumptions, a larger or smaller impairment loss allowance would have resulted that could have had a material impact on the Santander UK
groups reported profit before tax. Specifically, if managements conclusions were different, but within the range of what management deemed to be reasonably possible, the impairment loss for loans and advances could have decreased by
£193m (2015: £221m, 2014: £471m), with a consequential increase in profit before tax, or increased by £223m (2015: £167m, 2014: £212m), with a consequential decrease in profit before tax.

b) Provision for conduct remediation

The provision
charge for conduct remediation relating to past activities and products sold recognised in 2016 was a charge of £146m (2015: charge of £500m, 2014: charge of £140m) before tax. The balance sheet provision amounted to £493m
(2015: £637m, 2014: £291m). Detailed disclosures on the provision for conduct remediation can be found in Note 33.

The provision represents
managements best estimate of the anticipated costs of related customer contact and/or redress, including related costs. It requires significant judgement by management in determining appropriate assumptions, which include the level of
complaints expected to be received, of those, the number that will be upheld and redressed, as well as the redress costs for each of the different populations of customers identified. Based on these factors, management determines its best estimate
of the anticipated costs of redress and expected operating costs.

In the case of conduct risk, projects where significant progress has been made in terms of
customer communications sent, complaints received and redress paid, the assumptions are based on the actual data observed to date along with any expected developments. For projects which are still at an early stage, the assumptions are based on the
outcomes of previous similar customer contact exercises conducted and quality control checks.

Had management used different assumptions, a larger or smaller
provision charge would have resulted that could have had a material impact on the Santander UK groups reported profit before tax. Detailed disclosures on the assumptions used, including sensitivities, can be found in Note 33.

c) Pensions

The Santander UK group operates a number of
defined benefit pension schemes as described in Note 34 and estimates their position as described in the accounting policy Pensions and other post retirement benefits.

The defined benefit pension schemes which were in a net asset position had a surplus of £398m (2015: surplus of £556m) and the defined benefit pension
schemes which were in a net liability position had a deficit of £262m (2015: deficit of £110m).

Accounting for defined benefit pension schemes requires
management to make assumptions principally about the discount rate adopted, but also about mortality, price inflation, pension increases, life expectancy and earnings growth. Managements assumptions are based on past experience and current
economic trends, which are not necessarily an indication of future experience.

During the year, management enhanced the approach in setting the discount rate. This
change, which is discussed in Note 34, now better reflects managements estimate of long-dated credit risk implied in bond yields appropriate for the cash flow liabilities of the scheme. The methodology to derive general price inflation was
also moved to a scheme cash flow derived inflation to bring consistency with the discount rate.

Detailed disclosures on the current year service cost and
deficit/surplus, including sensitivities and the date of the last formal actuarial valuations of the assets and liabilities of the schemes can also be found in Note 34.





196Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





2. SEGMENTS

The principal activity of the Santander UK group is financial services. The Santander UK groups business is managed and reported on the basis of the following
segments:

| | - | Retail Banking
| | - | --------------

| | - | Commercial Banking
| | - | ------------------

| | - | Global Corporate Banking
| | - | ------------------------

| | - | Corporate Centre.
| | - | -----------------

In the fourth quarter of 2016, certain customers were transferred between our Retail Banking and
Commercial Banking business segments, in line with how we now manage our customers. Small business customers with turnover up to £6.5m per annum (previously up to £250,000) are now served as business banking customers in Retail
Banking. The balances transferred from Commercial Banking to Retail Banking were £2.2bn in customer loans and £3.2bn in customer deposits at 31 December 2016 (2015: £2.3bn and £3.0bn, respectively). Medium and large
business customers with annual turnover between £6.5m and £500m will continue to be served by Commercial Banking and those with annual turnover above £500m by Global Corporate Banking. The segmental analyses for Retail Banking and
Commercial Banking have been adjusted to reflect these changes for prior years.

The Santander UK groups segments are strategic business units that offer
different products and services. They are managed separately because each business requires different technology and marketing strategies. The Santander UK group has four segments:



| | - | Retail Banking offers a wide range of products and financial services to individuals and small businesses through a network of branches and ATMs, as well as through telephony, digital and intermediary channels.
Retail Banking also serves business customers with an annual turnover of up to £6.5m via business banking as well as Santander Consumer Finance, predominantly a vehicle finance business. Its main products are residential mortgage loans,
savings and current accounts, credit cards and personal loans as well as insurance policies.
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | - | Commercial Banking offers a wide range of products and financial services to customers through a network of regional CBCs and through telephony and digital channels. The management of our customers is organised
across two relationship teamsthe Regional Corporate Bank (RCB) that covers trading businesses with annual turnover from £6.5m to £500m and Specialist Sector Groups (SSG) that cover real estate, housing finance, education,
healthcare, and hotels. Commercial Banking products and services include loans, bank accounts, deposits, treasury services, invoice discounting, cash transmission, trade finance and asset finance.
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | - | Global Corporate Banking services corporate clients with a turnover of £500m and above per annum and financial institutions, as well as supporting the rest of Santander UKs business segments. Global
Corporate Banking clients require specially tailored solutions and value-added services due to their size, complexity and sophistication. We provide these clients with products to manage currency fluctuations, protect against interest rate risk, and
arrange capital markets finance and specialist trade finance solutions.
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | - | Corporate Centre predominantly consists of the non-core corporate and treasury legacy portfolios. Corporate Centre is also responsible for managing capital and funding, balance sheet composition and structure and
strategic liquidity risk. The non-core corporate and treasury legacy portfolios include aviation, shipping, infrastructure, commercial mortgages, Social Housing loans and structured credit assets, all of which are being run-down and/or managed for
value.
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The segmental information below is presented in a manner consistent with the internal reporting provided to the committee which is responsible
for allocating resources and assessing performance of the operating segments and has been identified as the chief operating decision maker. The segmental information is prepared on a statutory basis of accounting.

Transactions between the business segments are on normal commercial terms and conditions. The accounting policies of the segments are the same as those described in the
summary of significant accounting policies. Internal charges and internal UK transfer pricing adjustments have been reflected in the performance of each segment. Revenue sharing agreements are used to allocate external customer revenues to a
business segment on a reasonable basis. Funds are ordinarily reallocated between segments, resulting in funding cost transfers disclosed in operating income. Interest charged for these funds is based on the Santander UK groups cost of
wholesale funding.

Interest income and interest expense have not been reported separately. The majority of the revenues from the segments presented below are
interest income in nature and net interest income is relied on primarily to assess the performance of the segment and to make decisions regarding allocation of segmental resources.

Geographical information



|                                                                                                                                                                                  |  |         |         |  |         |         |       |         |  |  |       | 
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------- | ------- |  | ------- | ------- | ----- | ------- |  |  | ----- | 
|Geographical analysis of total operating income:                                                                                                                                  |  | 2016
£m |         |  | 2015
£m |         |       | 2014
£m | 
|United Kingdom                                                                                                                                                                    |  |         | 4,803   |  |         |         | 4,561 |         |  |  | 4,437 | 
|Other                                                                                                                                                                             |  |         | (8)     |  |         |         | 12    |         |  |  | 33    | 
|                                                                                                                                                                                  |  |         | 4,795   |  |         |         | 4,573 |         |  |  | 4,470 | 
|                                                                                                                                                                                  |  |        
|Geographical analysis of total assets other than financial instruments, current and deferred
tax assets, post-employment benefit assets and other assets (excluding prepayments): |  |         | 2016
£m |  |         | 2015
£m |      
|United Kingdom                                                                                                                                                                    |  |         |         |  |         |         | 4,008 |         |  |  | 3,963 | 
|                                                                                                                                                                                  |  |         |         |  |         |         | 4,008 |         |  |  | 3,963 | 

Revenue by products and services

Details of
revenue by product or service are disclosed in Notes 3 to 5.





Santander UK plc197



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##### Table of Contents



Annual Report 2016

Financial
statements









Results by segment



|                                                                               |  |                   |         |  |                       |  |        |                            |  |  |                     |  |  |          |         |  |  |  |         | 
|------------------------------------------------------------------------------ |  | ----------------- | ------- |  | --------------------- |  | ------ | -------------------------- |  |  | ------------------- |  |  | -------- | ------- |  |  |  | ------- | 
|2016                                                                           |  | Retail
Banking £m |         |  | Commercial
Banking £m |  |        | GlobalCorporate
Banking £m |  |  | Corporate
Centre £m |  |  | Total
£m |        
|Net interest income/(expense)                                                  |  |                   | 3,153   |  |                       |  | 405    |                            |  |  | 81                  |  |  |          | (57)    |  |  |  | 3,582   | 
|Non-interest income                                                            |  |                   | 580     |  |                       |  | 84     |                            |  |  | 320                 |  |  |          | 229     |  |  |  | 1,213   | 
|Total operating income                                                         |  |                   | 3,733   |  |                       |  | 489    |                            |  |  | 401                 |  |  |          | 172     |  |  |  | 4,795   | 
|Operating expenses before impairment losses, provisions and
(charges           |  |                   | (1,800) |  |                       |  | (215)  |                            |  |  | (280)               |  |  |          | (119)   |  |  |  | (2,414) | 
|Impairment (losses)/releases on loans and advances                             |  |                   | (20)    |  |                       |  | (29)   |                            |  |  | (21)                |  |  |          | 3       |  |  |  | (67)    | 
|Provisions for other liabilities and charges                                   |  |                   | (338)   |  |                       |  | (26)   |                            |  |  | (12)                |  |  |          | (21)    |  |  |  | (397)   | 
|Total operating impairment losses, provisions and
charges                      |  |                   | (358)   |  |                       |  | (55)   |                            |  |  | (33)                |  |  |          | (18)    |  |  |  | (464)   | 
|Profit before tax                                                              |  |                   | 1,575   |  |                       |  | 219    |                            |  |  | 88                  |  |  |          | 35      |  |  |  | 1,917   | 
|                                                                               |  |                   |         |  |                      
|Revenue from external customers                                                |  |                   | 4,369   |  |                       |  | 644    |                            |  |  | 466                 |  |  |          | (684)   |  |  |  | 4,795   | 
|Inter-segment revenue                                                          |  |                   | (636)   |  |                       |  | (155)  |                            |  |  | (65)                |  |  |          | 856     |  |  |  | -       | 
|Total operating income                                                         |  |                   | 3,733   |  |                       |  | 489    |                            |  |  | 401                 |  |  |          | 172     |  |  |  | 4,795   | 
|                                                                               |  |                   |         |  |                      
|Customer loans                                                                 |  |                   | 168,638 |  |                       |  | 19,381 |                            |  |  | 5,659               |  |  |          | 6,478   |  |  |  | 200,156 | 
|Total assets(1)                                                                |  |                   | 175,731 |  |                       |  | 19,381 |                            |  |  | 39,777              |  |  |          | 68,253  |  |  |  | 303,142 | 
|Customer deposits                                                              |  |                   | 148,063 |  |                       |  | 17,203 |                            |  |  | 4,054               |  |  |          | 3,031   |  |  |  | 172,351 | 
|Total liabilities                                                              |  |                   | 149,793 |  |                       |  | 17,203 |                            |  |  | 36,506              |  |  |          | 83,556  |  |  |  | 287,058 | 
|                                                                               |  |                   |         |  |                      
|Average number of
staff(2)                                                     |  |                   | 17,506  |  |                       |  | 1,435  |                            |  |  | 916                 |  |  |          | 6       |  |  |  | 19,863  | 
|                                                                               |  |                   |         |  |                      
|2015(3)                                                                        |  |                   |         |  |                       |  |        |                            |  |  |                     |  |  |          |         |  |  |  |         | 
|Net interest income                                                            |  |                   | 3,077   |  |                       |  | 368    |                            |  |  | 72                  |  |  |          | 58      |  |  |  | 3,575   | 
|Non-interest income                                                            |  |                   | 536     |  |                       |  | 94     |                            |  |  | 307                 |  |  |          | 61      |  |  |  | 998     | 
|Total operating income                                                         |  |                   | 3,613   |  |                       |  | 462    |                            |  |  | 379                 |  |  |          | 119     |  |  |  | 4,573   | 
|Operating expenses before impairment losses, provisions and
(charges)/releases |  |                   | (1,898) |  |                       |  | (217)  |                            |  |  | (287)               |  |  |          | 2       |  |  |  | (2,400) | 
|Impairment (losses)/releases on loans and advances                             |  |                   | (90)    |  |                       |  | (25)   |                            |  |  | 13                  |  |  |          | 36      |  |  |  | (66)    | 
|Provisions for other liabilities and (charges)/releases                        |  |                   | (728)   |  |                       |  | (23)   |                            |  |  | (14)                |  |  |          | 3       |  |  |  | (762)   | 
|Total operating impairment losses, provisions and
(charges)/releases           |  |                   | (818)   |  |                       |  | (48)   |                            |  |  | (1)                 |  |  |          | 39      |  |  |  | (828)   | 
|Profit before tax                                                              |  |                   | 897     |  |                       |  | 197    |                            |  |  | 91                  |  |  |          | 160     |  |  |  | 1,345   | 
|                                                                               |  |                   |         |  |                      
|Revenue from external customers                                                |  |                   | 4,529   |  |                       |  | 626    |                            |  |  | 437                 |  |  |          | (1,019) |  |  |  | 4,573   | 
|Inter-segment revenue                                                          |  |                   | (916)   |  |                       |  | (164)  |                            |  |  | (58)                |  |  |          | 1,138   |  |  |  | -       | 
|Total operating income                                                         |  |                   | 3,613   |  |                       |  | 462    |                            |  |  | 379                 |  |  |          | 119     |  |  |  | 4,573   | 
|                                                                               |  |                   |         |  |                      
|Customer loans                                                                 |  |                   | 167,093 |  |                       |  | 18,680 |                            |  |  | 5,470               |  |  |          | 7,391   |  |  |  | 198,634 | 
|Total
assets(1)                                                                |  |                   | 174,110 |  |                       |  | 18,680 |                            |  |  | 36,593              |  |  |          | 52,023  |  |  |  | 281,406 | 
|                                                                               |  |                   |         |  |                      
|Customer deposits                                                              |  |                   | 140,358 |  |                       |  | 15,076 |                            |  |  | 3,013               |  |  |          | 3,808   |  |  |  | 162,255 | 
|Total liabilities                                                              |  |                   | 143,157 |  |                       |  | 15,076 |                            |  |  | 32,290              |  |  |          | 75,224  |  |  |  | 265,747 | 
|                                                                               |  |                   |         |  |                      
|Average number of
staff(2)                                                     |  |                   | 18,133  |  |                       |  | 1,367  |                            |  |  | 898                 |  |  |          | 7       |  |  |  | 20,405  | 
|                                                                               |  |                   |         |  |                      
|2014(3)                                                                        |  |                   |         |  |                       |  |        |                            |  |  |                     |  |  |          |         |  |  |  |         | 
|Net interest income                                                            |  |                   | 3,041   |  |                       |  | 279    |                            |  |  | 75                  |  |  |          | 39      |  |  |  | 3,434   | 
|Non-interest income                                                            |  |                   | 569     |  |                       |  | 80     |                            |  |  | 300                 |  |  |          | 87      |  |  |  | 1,036   | 
|Total operating income                                                         |  |                   | 3,610   |  |                       |  | 359    |                            |  |  | 375                 |  |  |          | 126     |  |  |  | 4,470   | 
|Operating expenses before impairment losses, provisions and
charges            |  |                   | (1,850) |  |                       |  | (200)  |                            |  |  | (260)               |  |  |          | (87)    |  |  |  | (2,397) | 
|Impairment (losses)/releases on loans and advances                             |  |                   | (203)   |  |                       |  | (76)   |                            |  |  | 4                   |  |  |          | 17      |  |  |  | (258)   | 
|Provisions for other liabilities and charges                                   |  |                   | (398)   |  |                       |  | (9)    |                            |  |  | (9)                 |  |  |          | -       |  |  |  | (416)   | 
|Total operating impairment losses, provisions and
(charges)/releases           |  |                   | (601)   |  |                       |  | (85)   |                            |  |  | (5)                 |  |  |          | 17      |  |  |  | (674)   | 
|Profit before tax                                                              |  |                   | 1,159   |  |                       |  | 74     |                            |  |  | 110                 |  |  |          | 56      |  |  |  | 1,399   | 
|                                                                               |  |                   |         |  |                      
|Revenue from external customers                                                |  |                   | 4,630   |  |                       |  | 527    |                            |  |  | 432                 |  |  |          | (1,119) |  |  |  | 4,470   | 
|Inter-segment revenue                                                          |  |                   | (1,020) |  |                       |  | (168)  |                            |  |  | (57)                |  |  |          | 1,245   |  |  |  | -       | 
|Total operating income                                                         |  |                   | 3,610   |  |                       |  | 359    |                            |  |  | 375                 |  |  |          | 126     |  |  |  | 4,470   | 
|                                                                               |  |                   |         |  |                      
|Customer loans                                                                 |  |                   | 161,005 |  |                       |  | 16,147 |                            |  |  | 5,224               |  |  |          | 8,276   |  |  |  | 190,652 | 
|Total
assets(1)                                                                |  |                   | 165,920 |  |                       |  | 16,147 |                            |  |  | 38,301              |  |  |          | 55,609  |  |  |  | 275,977 | 
|Customer deposits                                                              |  |                   | 132,946 |  |                       |  | 11,965 |                            |  |  | 2,325               |  |  |          | 5,174   |  |  |  | 152,410 | 
|Total liabilities                                                              |  |                   | 135,903 |  |                       |  | 11,965 |                            |  |  | 36,359              |  |  |          | 77,557  |  |  |  | 261,784 | 
|                                                                               |  |                   |         |  |                      
|Average number of
staff(2)                                                     |  |                   | 18,270  |  |                       |  | 1,261  |                            |  |  | 724                 |  |  |          | 8       |  |  |  | 20,263  | 

|(1) | Includes customer loans, net of impairment loss allowances.
|--- | -----------------------------------------------------------

|(2) | Full-time equivalents.
|--- | ----------------------

|(3) | Restated. For discussion see Note 46
|--- | ------------------------------------





198Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





3. NET INTEREST INCOME



|                                             |  |         |         |  |         |  |         |         |  |  |         | 
|-------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- | 
|                                             |  |         |         |  |         |  |         | Group   | 
|                                             |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m | 
|Interest and similar income:                 |  |         |         |  |         |  |         |         |  |  |         | 
|Loans and advances to banks                  |  |         | 127     |  |         |  | 115     |         |  |  | 141     | 
|Loans and advances to customers              |  |         | 6,198   |  |         |  | 6,491   |         |  |  | 6,548   | 
|Other interest-earning financial assets      |  |         | 142     |  |         |  | 89      |         |  |  | 108     | 
|Total interest and similar income            |  |         | 6,467   |  |         |  | 6,695   |         |  |  | 6,797   | 
|Interest expense and similar charges:        |  |         |         |  |         |  |         |         |  |  |         | 
|Deposits by banks                            |  |         | (56)    |  |         |  | (63)    |         |  |  | (81)    | 
|Deposits by customers                        |  |         | (1,891) |  |         |  | (1,979) |         |  |  | (2,072) | 
|Debt securities in issue                     |  |         | (771)   |  |         |  | (926)   |         |  |  | (1,032) | 
|Subordinated liabilities                     |  |         | (143)   |  |         |  | (138)   |         |  |  | (151)   | 
|Other interest-bearing financial liabilities |  |         | (24)    |  |         |  | (14)    |         |  |  | (27)    | 
|Total interest expense and similar charges   |  |         | (2,885) |  |         |  | (3,120) |         |  |  | (3,363) | 
|Net interest income                          |  |         | 3,582   |  |         |  | 3,575   |         |  |  | 3,434   | 

Interest and similar income includes £79m (2015: £81m, 2014: £103m) on impaired loans.

4. NET FEE AND COMMISSION INCOME



|                                 |  |         |       |  |         |  |       |         |  |  |       | 
|-------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                 |  |         |       |  |         |  |       | Group   | 
|                                 |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m | 
|Fee and commission income:       |  |         |       |  |         |  |       |         |  |  |       | 
|Retail and corporate products    |  |         | 1,123 |  |         |  | 1,043 |         |  |  | 1,021 | 
|Insurance products               |  |         | 65    |  |         |  | 72    |         |  |  | 74    | 
|Total fee and commission income  |  |         | 1,188 |  |         |  | 1,115 |         |  |  | 1,095 | 
|Fee and commission expense:      |  |         |       |  |         |  |       |         |  |  |       | 
|Retail and corporate products    |  |         | (408) |  |         |  | (392) |         |  |  | (349) | 
|Other                            |  |         | (10)  |  |         |  | (8)   |         |  |  | (7)   | 
|Total fee and commission expense |  |         | (418) |  |         |  | (400) |         |  |  | (356) | 
|Net fee and commission income    |  |         | 770   |  |         |  | 715   |         |  |  | 739   | 

5. NET TRADING AND OTHER INCOME



|                                                                                                            |  |         |       |  |         |  |      |         |  |  |       | 
|----------------------------------------------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ---- | ------- |  |  | ----- | 
|                                                                                                            |  |         |       |  |         |  |      | Group   | 
|                                                                                                            |  | 2016
£m |       |  | 2015
£m |  |      | 2014
£m | 
|Net trading and funding of other items by the trading book                                                  |  |         | 75    |  |         |  | 252  |         |  |  | 310   | 
|Net income from operating lease assets                                                                      |  |         | 35    |  |         |  | 46   |         |  |  | 42    | 
|Net gains on assets designated at fair value through profit or loss                                         |  |         | 253   |  |         |  | 33   |         |  |  | 267   | 
|Net gains/(losses) on liabilities designated at fair value through profit or loss                           |  |         | 28    |  |         |  | (65) |         |  |  | (123) | 
|Net (losses)/gains on derivatives managed with assets/liabilities held at fair value through profit or
loss |  |         | (135) |  |         |  | 26   |         |  |  | (203) | 
|Hedge ineffectiveness                                                                                       |  |         | 28    |  |         |  | (20) |         |  |  | (12)  | 
|Net profit on sale of available-for-sale assets                                                             |  |         | 115   |  |         |  | -    |         |  |  | -     | 
|Other                                                                                                       |  |         | 44    |  |         |  | 11   |         |  |  | 16    | 
|                                                                                                            |  |         | 443   |  |         |  | 283  |         |  |  | 297   | 

Net trading and funding of other items by the trading book includes fair value losses of £50m (2015: £5m, 2014:
£22m) on embedded derivatives bifurcated from certain equity index-linked deposits, as described in the derivatives accounting policy in Note 1. The embedded derivatives are economically hedged internally with the equity derivatives trading
desk. These transactions are managed as part of the overall positions of the equity derivatives trading desk, the results of which are also included in this line item, and amounted to gains of £51m (2015: £7m, 2014: £24m). As a
result, the net fair value movements recognised on the equity index-linked deposits and the related economic hedges were net gains of £1m (2015: £2m, 2014: £2m).

On 2 November 2015, Visa Europe Limited agreed to sell 100% of its share capital to Visa Inc. The deal closed on 21 June 2016. As a member and shareholder of
Visa Europe Limited, Santander UK received upfront consideration made up of cash and convertible preferred stock. Additional deferred cash consideration is also payable following the third anniversary of closing. The gain on sale amounted to
£119m sterling equivalent and is included in Net profit on sale of available-for-sale assets.

In May 2016, as part of a liability management
exercise, certain debt instruments were purchased pursuant to a tender offer. This had no significant impact on the income statement. In June 2015, as part of a capital management exercise, Santander UK plc purchased certain of its debt instruments
pursuant to a tender offer. This had no significant impact on the income statement.





Santander UK plc199



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Annual Report 2016

Financial
statements









Exchange rate differences recognised in the Consolidated Income Statement on items not at fair value through profit or loss were £4,051m expense (2015: £477m
income, 2014: £486m income) and are presented in the line Net trading and funding of other items by the trading book. These are principally offset by related releases from the cash flow hedge reserve of £4,076m income (2015:
£305m expense, 2014: £427m expense) as set out in the Consolidated Statement of Comprehensive Income, which are also presented in net trading and funding of other items by the trading book. Exchange rate differences on items
measured at fair value through profit or loss are included in the line items relating to changes in fair value.

6. OPERATING EXPENSES BEFORE
IMPAIRMENT LOSSES, PROVISIONS AND CHARGES



|                                                             |  |         |       |  |         |  |       |         |  |  |       | 
|------------------------------------------------------------ |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                                             |  |         |       |  |         |  |       | Group   | 
|                                                             |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m | 
|Staff costs:                                                 |  |         |       |  |         |  |       |         |  |  |       | 
|Wages and salaries                                           |  |         | 728   |  |         |  | 723   |         |  |  | 689   | 
|Performance-related payments                                 |  |         | 157   |  |         |  | 163   |         |  |  | 169   | 
|Social security costs                                        |  |         | 94    |  |         |  | 92    |         |  |  | 90    | 
|Pensions costs: - defined contribution plans                 |  |         | 52    |  |         |  | 50    |         |  |  | 52    | 
|-
defined benefit plans                                      |  |         | 26    |  |         |  | 29    |         |  |  | (204) | 
|Other share-based payments                                   |  |         | 3     |  |         |  | (5)   |         |  |  | 6     | 
|Other personnel costs                                        |  |         | 62    |  |         |  | 63    |         |  |  | 58    | 
|                                                             |  |         | 1,122 |  |         |  | 1,115 |         |  |  | 860   | 
|Other administration expenses:                               |  |         |       |  |         |  |       |         |  |  |       | 
|Information technology expenses                              |  |         | 322   |  |         |  | 351   |         |  |  | 430   | 
|Property, plant and equipment expenses                       |  |         | 173   |  |         |  | 176   |         |  |  | 189   | 
|Other                                                        |  |         | 475   |  |         |  | 463   |         |  |  | 436   | 
|                                                             |  |         | 970   |  |         |  | 990   |         |  |  | 1,055 | 
|Depreciation, amortisation and impairment:                   |  |         |       |  |         |  |       |         |  |  |       | 
|Depreciation and impairment of property, plant and equipment |  |         | 201   |  |         |  | 254   |         |  |  | 221   | 
|Amortisation and impairment of intangible assets             |  |         | 121   |  |         |  | 41    |         |  |  | 261   | 
|                                                             |  |         | 322   |  |         |  | 295   |         |  |  | 482   | 
|                                                             |  |         | 2,414 |  |         |  | 2,400 |         |  |  | 2,397 | 

Staff costs

Performance-related
payments include bonuses paid in the form of cash and share awards granted under the Long-Term Incentive Plan, as described in Note 40. Included in this are the Santander UK groups equity-settled share-based payments, none of which
related to option-based schemes. These are disclosed in the table below as Shares award.

Performance-related payments above include amounts related to
deferred performance awards as follows:



|       |  |                                     |   |  |                                   |  |                                                  |       |  |  |    |  |                                     |  |  |                                   |    |  |       |  |    |  |  |  |    | 
|------ |  | ----------------------------------- | - |  | --------------------------------- |  | ------------------------------------------------ | ----- |  |  | -- |  | ----------------------------------- |  |  | --------------------------------- | -- |  | ----- |  | -- |  |  |  | -- | 
|       |  | Costs recognised in 2016            |   |  |                                   |  | Costs expected to be recognised in 2017 or later |      
|       |  | Arising from awards
in current year |   |  | Arising from awards
in prior year |  |                                                  | Total |  |  |    |  | Arising from awards
in current year |  |  | Arising from awards
in prior year |    |  | Total | 
|       |  | £m                                  |   |  | £m                                |  |                                                  | £m    |  |  |    |  | £m                                  |  |  | £m                                |    |  | £m    | 
|Cash   |  |                                     | 4 |  |                                   |  | 11                                               |       |  |  | 15 |  |                                     |  |  |                                   | 12 |  |       |  | 6  |  |  |  | 18 | 
|Shares |  |                                     | 3 |  |                                   |  | 10                                               |       |  |  | 13 |  |                                     |  |  |                                   | 7  |  |       |  | 7  |  |  |  | 14 | 
|       |  |                                     | 7 |  |                                   |  | 21                                               |       |  |  | 28 |  |                                     |  |  |                                   | 19 |  |       |  | 13 |  |  |  | 32 | 

The following table shows the amount of bonus awarded to employees for the performance year 2016. In the case of deferred cash and share
awards, the final amount paid to an employee is influenced by forfeiture provisions and any performance conditions to which these awards are subject. The deferred share award amount is based on the fair value of these awards at the date of grant.



|                            |  |                              |     |  |                                     |  |     |         |  |  |         |  |  |         |    |  |         |  |     |  |  |  |     | 
|--------------------------- |  | ---------------------------- | --- |  | ----------------------------------- |  | --- | ------- |  |  | ------- |  |  | ------- | -- |  | ------- |  | --- |  |  |  | --- | 
|                            |  | Expenses charged in the year |     |  | Expenses deferred to future periods |  |     | Total   | 
|                            |  | 2016
£m                      |     |  | 2015
£m                             |  |     | 2016
£m |  |  | 2015
£m |  |  | 2016
£m |    |  | 2015
£m | 
|Cash award - not deferred   |  |                              | 118 |  |                                     |  | 126 |         |  |  | -       |  |  |         | -  |  |         |  | 118 |  |  |  | 126 | 
|- deferred                  |  |                              | 15  |  |                                     |  | 16  |         |  |  | 18      |  |  |         | 15 |  |         |  | 33  |  |  |  | 31  | 
|Shares award - not deferred |  |                              | 11  |  |                                     |  | 9   |         |  |  | -       |  |  |         | -  |  |         |  | 11  |  |  |  | 9   | 
|- deferred                  |  |                              | 13  |  |                                     |  | 12  |         |  |  | 14      |  |  |         | 17 |  |         |  | 27  |  |  |  | 29  | 
|Total discretionary bonus   |  |                              | 157 |  |                                     |  | 163 |         |  |  | 32      |  |  |         | 32 |  |         |  | 189 |  |  |  | 195 | 

Pension costs: defined benefit plans- In 2014, a net gain of £218m arose as a result of scheme changes that limit
future defined benefit pension entitlements and provide for the longer term sustainability of our staff pension arrangement, as set out in Note 34.

Other
share-based payments consist of options granted under the Employee Sharesave scheme, as described in Note 40, which comprise the Santander UK groups cash-settled share-based payments.

During the year, the Company incurred staff costs of £908m and the average number of full-time equivalent staff was 18,150.





200Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Depreciation, amortisation and impairment

In 2016, an impairment charge of £45m was recognised that primarily related to a multi-entity banking platform developed for our non-ring-fenced bank under the
original Banking Reform structure. There was no impairment in 2015. In 2014, an impairment charge of £206m was recognised in respect of software write-offs. The write-offs were for the decommissioning of redundant systems following the
implementation of our new digital platform and the completion of our product simplification programme.

7. AUDIT AND OTHER SERVICES

The fees for audit and other services payable to the Companys auditor are analysed as follows:



|                                                                                                                      |  |         |     |  |         |  |     |         |  |  |     | 
|--------------------------------------------------------------------------------------------------------------------- |  | ------- | --- |  | ------- |  | --- | ------- |  |  | --- | 
|                                                                                                                      |  |         |     |  |         |  |     | Group   | 
|                                                                                                                      |  | 2016
£m |     |  | 2015
£m |  |     | 2014
£m | 
|Audit fees:                                                                                                           |  |         |     |  |         |  |     |         |  |  |     | 
|Fees payable to the Companys auditor(1) and its
associates for the audit of the Santander UK groups annual accounts |  |         | 4.6 |  |         |  | 3.6 |         |  |  | 3.5 | 
|Fees payable to the Companys auditor(1) and its
associates for other services to the Santander UK group:             |  |         |     |  |         |  |     |         |  |  |     | 
|- The audit of the Santander UK groups subsidiaries                                                                  |  |         | 1.1 |  |         |  | 1.8 |         |  |  | 1.8 | 
|Total audit
fees(2)                                                                                                   |  |         | 5.7 |  |         |  | 5.4 |         |  |  | 5.3 | 
|Non-audit fees:                                                                                                       |  |         |     |  |         |  |     |         |  |  |     | 
|Audit-related services                                                                                                |  |         | 0.6 |  |         |  | 2.7 |         |  |  | 2.5 | 
|Other taxation advisory services                                                                                      |  |         | 0.1 |  |         |  | 0.2 |         |  |  | 0.3 | 
|Other services                                                                                                        |  |         | 1.9 |  |         |  | 1.7 |         |  |  | 1.2 | 
|Total non-audit fees                                                                                                  |  |         | 2.6 |  |         |  | 4.6 |         |  |  | 4.0 | 

(1) PricewaterhouseCoopers LLP became the Santander UK groups principal auditor in 2016. Deloitte LLP was the principal auditor
during 2015 and 2014. Excluded from 2016 fees are amounts of £0.2m payable to Deloitte LLP in relation to the 2015 statutory audit.

(2) Fees amounting to
£0.3m included as total audit fees in the current year were attributed to audit-related services in the prior year.

Audit-related services relate to services
performed in connection with the statutory and regulatory filings of the Company and its associates. Of this category £0.1m (2015: £1.2m, 2014: £1.3m) accords with the definition of Audit fees per US Securities and
Exchange Commission (SEC) guidance. The remaining £0.5m (2015: £1.5m, 2014: £1.2m) accords with the definition of Audit-related fees per that guidance and relates to services performed in connection with securitization,
debt issuance and related work and reporting to prudential and conduct regulators which is in accordance with the definition Audit-related fees per SEC guidance. Taxation compliance services accord with the SEC definition of Tax
fees and relate to compliance services performed in respect of US Tax returns and other similar tax compliance services. Other services accord with the SEC definition of All other fees and include services performed in respect of
the Global Corporate Banking remediation programme. 2015 included services in respect of Santander UKs preparation for MiFiDII and IFRS9 Implementation. 2014 included services in relation to the ECBs asset quality review.

A framework for ensuring auditors independence has been adopted which defines unacceptable non-audit assignments, pre-approval of acceptable non-audit assignments
and procedures for approval of acceptable non-audit assignments and services by the Santander UK plc Board Audit Committee and services provided by the Santander UK groups external auditor. No services were provided pursuant to contingent fee
arrangements.

8. IMPAIRMENT LOSSES AND PROVISIONS



|                                                                       |  |         |      |  |         |  |      |         |  |  |       | 
|---------------------------------------------------------------------- |  | ------- | ---- |  | ------- |  | ---- | ------- |  |  | ----- | 
|                                                                       |  |         |      |  |         |  |      | Group   | 
|                                                                       |  | 2016
£m |      |  | 2015
£m |  |      | 2014
£m | 
|Impairment losses on loans and advances:                               |  |         |      |  |         |  |      |         |  |  |       | 
|- Loans and advances to customers (Note 15)                            |  |         | 132  |  |         |  | 156  |         |  |  | 369   | 
|Recoveries of loans and advances, net of collection costs (Note
15)    |  |         | (65) |  |         |  | (90) |         |  |  | (111) | 
|                                                                       |  |         | 67   |  |         |  | 66   |         |  |  | 258   | 
|Provisions for other liabilities and charges (Note 33)                 |  |         | 397  |  |         |  | 762  |         |  |  | 416   | 
|Total impairment losses and provisions charged to the income
statement |  |         | 464  |  |         |  | 828  |         |  |  | 674   | 

There were no impairment losses on loans and advances to banks, loans and receivables securities, available-for-sale securities and
held-to-maturity investments.





Santander UK plc201



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##### Table of Contents



Annual Report 2016

Financial
statements









9. TAXATION



|                                          |  |         |      |  |         |  |      |         |  |  |      | 
|----------------------------------------- |  | ------- | ---- |  | ------- |  | ---- | ------- |  |  | ---- | 
|                                          |  |         |      |  |         |  |      | Group   | 
|                                          |  | 2016
£m |      |  | 2015
£m |  |      | 2014
£m | 
|Current tax:                              |  |         |      |  |         |  |      |         |  |  |      | 
|UK corporation tax on profit for the year |  |         | 611  |  |         |  | 346  |         |  |  | 273  | 
|Adjustments in respect of prior years     |  |         | (13) |  |         |  | (16) |         |  |  | (16) | 
|Total current tax                         |  |         | 598  |  |         |  | 330  |         |  |  | 257  | 
|Deferred tax:                             |  |         |      |  |         |  |      |         |  |  |      | 
|(Credit)/charge for the year              |  |         | (11) |  |         |  | 54   |         |  |  | 37   | 
|Adjustments in respect of prior years     |  |         | 11   |  |         |  | (3)  |         |  |  | (5)  | 
|Total deferred tax                        |  |         | -    |  |         |  | 51   |         |  |  | 32   | 
|Tax on profit                             |  |         | 598  |  |         |  | 381  |         |  |  | 289  | 

UK corporation tax is calculated at 20% (2015: 20.25%, 2014: 21.5%) of the estimated assessable profits for the year. The standard rate
of UK corporation tax was 28% for banking entities and 20% for non-banking entities (2015: 20.25%). The standard rate of UK corporation tax was reduced from 21% to 20% with effect from 1 April 2015 and an 8% surcharge is applied to banking
companies from 1 January 2016. Taxation for other jurisdictions is calculated at the rates prevailing in the relevant jurisdictions. The Finance (No.2) Act 2015, which was substantively enacted on 26 October 2015, introduced reductions in
the corporation tax rate from 20% to 19% in 2017 and 18% by 2020.

The Finance Act 2016, introduced a further reduction in the corporation tax rate to 17% from 2020.
As this further change was substantively enacted on 6 September 2016, the effects are included in the deferred tax balances at 31 December 2016.

The
Santander UK groups effective tax rate for 2016, based on profit before tax, was 31.2% (2015: 28.3%, 2014: 20.7%). The tax on profit before tax differs from the theoretical amount that would arise using the basic corporation tax rate of the
Company as follows:



|                                                                             |  |         |       |  |         |  |       |         |  |  |       | 
|---------------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                                                             |  |         |       |  |         |  |       | Group   | 
|                                                                             |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m | 
|Profit before tax                                                            |  |         | 1,917 |  |         |  | 1,345 |         |  |  | 1,399 | 
|Tax calculated at a tax rate of 20% (2015: 20.25%, 2014: 21.5%)              |  |         | 384   |  |         |  | 272   |         |  |  | 301   | 
|Bank surcharge on profits                                                    |  |         | 134   |  |         |  | -     |         |  |  | -     | 
|Non-deductible preference dividends paid                                     |  |         | 8     |  |         |  | 6     |         |  |  | 7     | 
|Non-deductible UK Bank Levy                                                  |  |         | 30    |  |         |  | 20    |         |  |  | 16    | 
|Non-deductible conduct remediation                                           |  |         | 39    |  |         |  | 90    |         |  |  | -     | 
|Other non-equalised items                                                    |  |         | 8     |  |         |  | 8     |         |  |  | (6)   | 
|Effect of non-UK profits and losses                                          |  |         | (1)   |  |         |  | (1)   |         |  |  | (1)   | 
|Utilisation of capital losses for which credit was not previously recognised |  |         | -     |  |         |  | (4)   |         |  |  | (3)   | 
|Effect of change in tax rate on deferred tax provision                       |  |         | (2)   |  |         |  | 9     |         |  |  | (4)   | 
|Adjustment to prior year provisions                                          |  |         | (2)   |  |         |  | (19)  |         |  |  | (21)  | 
|Tax charge                                                                   |  |         | 598   |  |         |  | 381   |         |  |  | 289   | 

The increase in effective tax rate from 2015 to 2016 was largely due to the introduction of the 8% surcharge for banking companies,
in part offset by lower levels of non-deductible conduct remediation in 2016. It is anticipated that the Santander UK groups effective tax rate in future periods will continue to be impacted by the 8% surcharge, the level of any non-deductible
conduct remediation, changes to the cost of the Bank Levy and reductions in the statutory rate as noted above.

Current tax assets and liabilities

Movements in current tax assets and liabilities during the year were as follows:



|                           |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|-------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                           |  |         |       |  | Group   |  |       |         |  |  | Company | 
|                           |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Assets                     |  |         | 49    |  |         |  | -     |         |  |  | 198     |  |  |  | 208   | 
|Liabilities                |  |         | (1)   |  |         |  | (69)  |         |  |  | -       |  |  |  | -     | 
|At 1 January               |  |         | 48    |  |         |  | (69)  |         |  |  | 198     |  |  |  | 208   | 
|Income statement           |  |         | (598) |  |         |  | (330) |         |  |  | (488)   |  |  |  | (175) | 
|Other comprehensive income |  |         | (49)  |  |         |  | 10    |         |  |  | -       |  |  |  | 10    | 
|Corporate income tax paid  |  |         | 507   |  |         |  | 419   |         |  |  | 393     |  |  |  | 132   | 
|Other movements            |  |         | 38    |  |         |  | 18    |         |  |  | 34      |  |  |  | 23    | 
|                           |  |         | (54)  |  |         |  | 48    |         |  |  | 137     |  |  |  | 198   | 
|Assets                     |  |         | -     |  |         |  | 49    |         |  |  | 137     |  |  |  | 198   | 
|Liabilities                |  |         | (54)  |  |         |  | (1)   |         |  |  | -       |  |  |  | -     | 
|At 31 December             |  |         | (54)  |  |         |  | 48    |         |  |  | 137     |  |  |  | 198   | 

The amount of corporation income tax paid differs from the tax charge for the period as a result of the timing of payments due to the tax
authorities together with the effects of movements in temporary differences, adjustments to prior period current tax provisions and current tax recognised directly in other comprehensive income.





202Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





The Santander UK group proactively engages with HM Revenue & Customs to resolve tax
matters relating to prior years. Provision for such matters are described in Note 1 to the Consolidated Financial Statements. It is not expected that there will be any material movement in such provisions within the next twelve months.

The Santander UK group adopted the Code of Practice on Taxation for Banks in 2010. More detail on Santander UKs tax strategy can be found at www.santander.co.uk.

Further information about deferred tax is presented in Note 24.

10. DIVIDENDS

a) Ordinary share capital

Dividends on ordinary shares declared during the year were as follows:



|                                           |  |                      |      |  |                      |  |      |                      |  |  |         |  |  |         |     |  |         |  |     |  |  |  |     | 
|------------------------------------------ |  | -------------------- | ---- |  | -------------------- |  | ---- | -------------------- |  |  | ------- |  |  | ------- | --- |  | ------- |  | --- |  |  |  | --- | 
|                                           |  | Group and Company    |      |  | Group and Company    | 
|                                           |  | 2016
Pence per share |      |  | 2015
Pence per share |  |      | 2014
Pence per share |  |  | 2016
£m |  |  | 2015
£m |     |  | 2014
£m | 
|In respect of current year - first interim |  |                      | 1.02 |  |                      |  | 1.05 |                      |  |  | 0.76    |  |  |         | 317 |  |         |  | 325 |  |  |  | 237 | 
|- second interim                           |  |                      | 0.89 |  |                      |  | 0.33 |                      |  |  | 0.81    |  |  |         | 276 |  |         |  | 102 |  |  |  | 250 | 
|                                           |  |                      | 1.91 |  |                      |  | 1.38 |                      |  |  | 1.57    |  |  |         | 593 |  |         |  | 427 |  |  |  | 487 | 

b) Other equity instruments



|                                                                    |  |  |  |  |                   |  |     |         |  |  |         |  |  |  |    | 
|------------------------------------------------------------------- |  |  |  |  | ----------------- |  | --- | ------- |  |  | ------- |  |  |  | -- | 
|                                                                    |  |  |  |  | Group and Company | 
|                                                                    |  |  |  |  | 2016
£m           |  |     | 2015
£m |  |  | 2014
£m | 
|£300m fixed/floating rate non-cumulative callable preference shares |  |  |  |  |                   |  | 1   |         |  |  | 2       |  |  |  | 19 | 
|£300m Step-up Callable Perpetual Reserve Capital Instruments        |  |  |  |  |                   |  | 17  |         |  |  | 21      |  |  |  | 21 | 
|£300m Step-up Callable Perpetual Preferred Securities               |  |  |  |  |                   |  | -   |         |  |  | -       |  |  |  | -  | 
|AT1 securities:                                                     |  |  |  |  |                   |  |     |         |  |  |         |  |  |  |    | 
|- £750m Perpetual Capital Securities                                |  |  |  |  |                   |  | 55  |         |  |  | 30      |  |  |  | -  | 
|- £300m Perpetual Capital Securities                                |  |  |  |  |                   |  | 23  |         |  |  | 25      |  |  |  | -  | 
|- £500m Perpetual Capital Securities                                |  |  |  |  |                   |  | 32  |         |  |  | 48      |  |  |  | -  | 
|                                                                    |  |  |  |  |                   |  | 128 |         |  |  | 126     |  |  |  | 40 | 

Further details of these securities can be found in Note 36.

c) Non-controlling interests



|                       |  |  |  |  |         |  |    |         |  |  |         |  |  |  |   | 
|---------------------- |  |  |  |  | ------- |  | -- | ------- |  |  | ------- |  |  |  | - | 
|                       |  |  |  |  | Group   | 
|                       |  |  |  |  | 2016
£m |  |    | 2015
£m |  |  | 2014
£m | 
|PSA Finance UK Limited |  |  |  |  |         |  | 12 |         |  |  | -       |  |  |  | - | 

Further details of these securities can be found in Note 37.





Santander UK plc203



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##### Table of Contents



Annual Report 2016

Financial
statements









11. TRADING ASSETS



|                                                                                    |  |  |  |  |         |  |        |         |  |  |        | 
|----------------------------------------------------------------------------------- |  |  |  |  | ------- |  | ------ | ------- |  |  | ------ | 
|                                                                                    |  |  |  |  | Group   | 
|                                                                                    |  |  |  |  | 2016
£m |  |        | 2015
£m | 
|Loans and advances to banks          - securities purchased
under resale agreements |  |  |  |  |         |  | 2,757  |         |  |  | 992    | 
|- other(1)                                                                          |  |  |  |  |         |  | 4,721  |         |  |  | 4,441  | 
|Loans and advances to customers   - securities purchased under resale agreements    |  |  |  |  |         |  | 7,955  |         |  |  | 4,352  | 
|- other(1)                                                                          |  |  |  |  |         |  | 2,368  |         |  |  | 1,608  | 
|Debt securities                                                                     |  |  |  |  |         |  | 6,248  |         |  |  | 5,462  | 
|Equity securities                                                                   |  |  |  |  |         |  | 5,986  |         |  |  | 7,106  | 
|                                                                                    |  |  |  |  |         |  | 30,035 |         |  |  | 23,961 | 

(1) Total other comprises short-term loans of £920m (2015: £665m) and cash collateral of £6,169m (2015:
£5,384m).

Debt securities can be analysed by type of issuer as follows:



|                                                         |  |  |  |  |         |  |       |         |  |  |       | 
|-------------------------------------------------------- |  |  |  |  | ------- |  | ----- | ------- |  |  | ----- | 
|                                                         |  |  |  |  | Group   | 
|                                                         |  |  |  |  | 2016
£m |  |       | 2015
£m | 
|Issued by public bodies:                                 |  |  |  |  |         |  |       |        
|- Government securities                                  |  |  |  |  |         |  | 5,350 |         |  |  | 4,494 | 
|Issued by other issuers:                                 |  |  |  |  |         |  |       |         |  |  |       | 
|- Fixed and floating rate notes: - Government guaranteed |  |  |  |  |         |  | 898   |         |  |  | 968   | 
|                                                         |  |  |  |  |         |  | 6,248 |         |  |  | 5,462 | 

At 31 December 2016 and 2015, the Company had no trading assets. Included in the above balances are amounts due from Banco Santander
SA and other subsidiaries of Banco Santander SA outside the Santander UK group of £52m (2015: £126m) and £56m (2015: £91m) respectively.

A
significant portion of the debt and equity securities are held in our eligible liquidity pool. They comprise mainly of government bonds and quoted stocks. Detailed disclosures can be found in Liquidity risk section of the Risk review.





204Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





12. DERIVATIVE FINANCIAL INSTRUMENTS

a) Use of derivatives

The Santander UK group transacts
derivatives for four primary purposes:

|- | To manage the portfolio risks arising from customer business
|- | ------------------------------------------------------------

|- | To manage and hedge the Santander UK groups own risks
|- | ------------------------------------------------------

|- | To create risk management solutions for customers
|- | -------------------------------------------------

|- | To generate profits through sales activities.
|- | ---------------------------------------------

Under IAS 39, all derivatives are classified as held for
trading (except for derivatives which are designated as effective hedging instruments in accordance with the detailed requirements of IAS 39) even if this is not the purpose of the transaction. The held for trading classification therefore
includes two types of derivatives:

|- | Those used in sales activities and those providing risk solutions for customers
|- | -------------------------------------------------------------------------------

|- | Those used for own risk management purposes but, for various reasons, either the Santander UK group does not elect to claim hedge accounting for or they do not meet the qualifying criteria for hedge accounting. These
consist of:
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Non-qualifying hedging derivatives (economic hedges), whose terms match other on-balance sheet instruments but do not meet the technical criteria for hedge accounting, or which use natural offsets within other
on-balance sheet instruments containing the same risk features as part of an integrated approach to risk management, and hence do not require the application of hedge accounting to achieve a reduction in income statement volatility
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Derivatives managed in conjunction with financial instruments designated at fair value (the fair value option). The fair value option is described more fully in the Accounting Policy Financial assets and
Notes 13 and 29. The Santander UK groups business model is primarily structured to maximise use of the fair value option, rather than electing to apply hedge accounting, in order to reduce the administrative burden on the Santander UK group
associated with complying with the detailed hedge accounting requirements of IAS 39
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Derivatives that do not meet the qualifying criteria for hedge accounting, including ineffective hedging derivatives and any components of hedging derivatives that are excluded from assessing hedge effectiveness
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Derivative contracts that represent the closing-out of existing positions through the use of matching deals.
| | - | ------------------------------------------------------------------------------------------------------------

The
following table summarises the activities undertaken, the related risks associated with such activities and the types of derivatives used in managing such risks. These risks may also be managed using on-balance sheet instruments as part of an
integrated approach to risk management.



|                                                                                                                           |  |                                                                                                                                 |  |                                                                          
|-------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------
|Activity                                                                                                                   |  | Risk                                                                                                                            |  | Type of derivative                                                       
|Management of the return on variable rate assets financed by shareholders funds and net non-interest-bearing liabilities. |  | Reduced profitability due to falls in interest rates.                                                                           |  | Receive fixed interest rate swaps.                                       
|Management of the basis between administered rate assets and liabilities and wholesale market rates.                       |  | Reduced profitability due to adverse changes in the basis spread.                                                               |  | Basis swaps.                                                             
|Management of repricing profile of wholesale funding.                                                                      |  | Reduced profitability due to adverse movement in wholesale interest rates when large volumes of wholesale funding are repriced. |  | Forward rate agreements.                                                 
|Fixed rate lending and investments.                                                                                        |  | Sensitivity to increases in interest rates.                                                                                     |  | Pay fixed interest rate swaps.                                           
|Fixed rate retail and wholesale funding.                                                                                   |  | Sensitivity to falls in interest rates.                                                                                         |  | Receive fixed interest rate swaps.                                       
|Equity-linked retail funding.                                                                                              |  | Sensitivity to increases in equity market indices.                                                                              |  | Receive equity swaps.                                                    
|Management of other net interest income on retail activities.                                                              |  | Sensitivity of income to changes in interest rates.                                                                             |  | Interest rate swaps.                                                     
|Issuance of products with embedded equity options.                                                                         |  | Sensitivity to changes in underlying index and index volatility causing option exercise.                                        |  | Interest rate swaps combined with equity options.                        
|Lending and investments.                                                                                                   |  | Sensitivity to weakening credit quality.                                                                                        |  | Purchase credit default swaps and total return swaps.                    
|Borrowing funds in foreign currencies.                                                                                     |  | Sensitivity to changes in foreign exchange rates.                                                                               |  | Cross currency swaps.                                                    
|Lending and issuance of products with embedded interest rate options.                                                      |  | Sensitivity to changes in underlying rate and rate volatility causing option exercise.                                          |  | Interest rate swaps plus caps/floors.                                    
|Investment in, and issuance of, bonds with put/call features.                                                              |  | Sensitivity to changes in rates causing option exercise.                                                                        |  | Interest rate swaps combined with swaptions(1) and other matched options.
|Management of the cost of offering sharesave schemes to employees.                                                         |  | Reduced profitability due to increases in the Banco Santander SA share price.                                                   |  | Equity options and equity forwards.                                      

(1) A swaption is an option on a swap that gives the holder the right but not the obligation to buy or sell a swap.

The Santander UK groups derivative activities do not give rise to significant open positions in portfolios of derivatives. Any residual position is managed to
ensure that it remains within acceptable risk levels, with matching deals being utilised to achieve this where necessary. When entering into derivative transactions, the Santander UK group employs the same credit risk management procedures to assess
and approve potential credit exposures that are used for traditional lending.





Santander UK plc205



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##### Table of Contents



Annual Report 2016

Financial
statements









b) Trading derivatives

Most of the Santander UK
groups derivative transactions relate to sales activities and derivative contracts that represent the closing-out of existing positions through the use of matching deals. Sales activities include the structuring and marketing of derivative
products to customers to enable them to take, transfer, modify or reduce current or expected risks. Limited positions may be traded actively or be held over a period of time to benefit from expected changes in exchange rates, interest rates, equity
prices or other market parameters. Trading includes market-making, positioning and arbitrage activities. Market-making entails quoting bid and offer prices to other market participants for the purpose of generating revenues based on spread and
volume; positioning means managing market risk positions in the expectation of benefiting from favourable movements in prices, rates or indices; arbitrage involves identifying and profiting from price differentials between markets and products.

Commercial Banking and Global Corporate Banking deal with customers who wish to enter into derivative contracts. Any market risk arising from such transactions is hedged
by Global Corporate Banking. Global Corporate Banking is responsible for implementing Santander UK group derivative hedging with the external market together with its own trading activities. For trading activities, its objectives are to gain value
by:

| | - | Marketing derivatives to end users and hedging the resulting exposures efficiently
| | - | ----------------------------------------------------------------------------------

| | - | The management of trading exposure reflected on the Santander UK groups balance sheet.
| | - | ---------------------------------------------------------------------------------------

c)
Hedging derivatives

The Santander UK group uses derivatives (principally interest rate swaps and cross-currency swaps) for hedging purposes in the management
of its own asset and liability portfolios, including fixed-rate lending, fixed-rate asset purchases, medium-term note issues, capital issues, and structural positions. This enables the Santander UK group to optimise the overall cost to it of
accessing debt capital markets, and to mitigate the market risk which would otherwise arise from structural imbalances in the maturity and other profiles of its assets and liabilities. Such risks may also be managed using natural offsets within
other on-balance sheet instruments as part of an integrated approach to risk management.

Derivative products which are combinations of more basic derivatives (such
as swaps with embedded option features), or which have leverage features, may be used in circumstances where the underlying position being hedged contains the same risk features. In such cases, the derivative used will be structured to match the
risks of the underlying asset or liability. Exposure to market risk on such contracts is therefore hedged.

The contract/notional amounts of derivatives in the
tables below indicate the nominal value of transactions outstanding at the balance sheet date; they do not represent actual exposures.



|                                               |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|---------------------------------------------- |  | ------------------ | --------- |  | ---------- |  | ------ | -------------- |  |  | ------ |  | ----------------- |  |  | --------- | --------- |  | -------------- |  | ------ |  |  |  | ------ | 
|                                               |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  | Group          | 
|                                               |  |                    |           |  |            |  |        | 2016           |  |  |        |  |                   |  |  |           |           |  | 2015           | 
|                                               |  |                    |           |  | Fair value |  |        |                |  |  |        |  | Fair value        | 
|Derivatives held for trading                   |  | Notional amount
£m |           |  | Assets
£m  |  |        | Liabilities
£m |  |  |        |  | Notional amount£m |  |  | Assets
£m |           |  | Liabilities
£m | 
|Exchange rate contracts:                       |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Cross-currency swaps                         |  |                    | 125,850   |  |            |  | 2,700  |                |  |  | 5,040  |  |                   |  |  |           | 124,025   |  |                |  | 3,907  |  |  |  | 4,364  | 
|- Foreign exchange swaps, options and forwards |  |                    | 39,671    |  |            |  | 964    |                |  |  | 982    |  |                   |  |  |           | 37,879    |  |                |  | 358    |  |  |  | 572    | 
|                                               |  |                    | 165,521   |  |            |  | 3,664  |                |  |  | 6,022  |  |                   |  |  |           | 161,904   |  |                |  | 4,265  |  |  |  | 4,936  | 
|Interest rate contracts:                       |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Interest rate swaps                          |  |                    | 719,603   |  |            |  | 11,928 |                |  |  | 12,260 |  |                   |  |  |           | 579,985   |  |                |  | 10,828 |  |  |  | 10,584 | 
|- Caps, floors and swaptions                   |  |                    | 46,705    |  |            |  | 2,165  |                |  |  | 2,002  |  |                   |  |  |           | 49,325    |  |                |  | 1,943  |  |  |  | 1,712  | 
|- Futures (exchange traded)                    |  |                    | 69,501    |  |            |  | 1      |                |  |  | -      |  |                   |  |  |           | 38,633    |  |                |  | -      |  |  |  | 1      | 
|- Forward rate agreements                      |  |                    | 106,989   |  |            |  | 23     |                |  |  | 79     |  |                   |  |  |           | 70,328    |  |                |  | 3      |  |  |  | 47     | 
|                                               |  |                    | 942,798   |  |            |  | 14,117 |                |  |  | 14,341 |  |                   |  |  |           | 738,271   |  |                |  | 12,774 |  |  |  | 12,344 | 
|Equity and credit contracts:                   |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Equity index swaps and similar products      |  |                    | 15,234    |  |            |  | 1,316  |                |  |  | 858    |  |                   |  |  |           | 19,547    |  |                |  | 1,377  |  |  |  | 1,621  | 
|- Equity index options (exchange traded)       |  |                    | 34        |  |            |  | -      |                |  |  | 1      |  |                   |  |  |           | 17,742    |  |                |  | 88     |  |  |  | 2      | 
|- Credit default swaps and similar products    |  |                    | 57        |  |            |  | 5      |                |  |  | 1      |  |                   |  |  |           | 56        |  |                |  | 5      |  |  |  | 2      | 
|                                               |  |                    | 15,325    |  |            |  | 1,321  |                |  |  | 860    |  |                   |  |  |           | 37,345    |  |                |  | 1,470  |  |  |  | 1,625  | 
|Total derivatives held for trading             |  |                    | 1,123,644 |  |            |  | 19,102 |                |  |  | 21,223 |  |                   |  |  |           | 937,520   |  |                |  | 18,509 |  |  |  | 18,905 | 
|                                               |  |                    |           |  |            |  |       
|Derivatives held for hedging                   |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|Derivatives designated as fair value hedges:   |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|Exchange rate contracts:                       |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Cross-currency swaps                         |  |                    | 3,819     |  |            |  | 751    |                |  |  | -      |  |                   |  |  |           | 3,213     |  |                |  | 78     |  |  |  | 113    | 
|Interest rate contracts:                       |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Interest rate swaps                          |  |                    | 70,849    |  |            |  | 1,578  |                |  |  | 1,790  |  |                   |  |  |           | 68,905    |  |                |  | 1,234  |  |  |  | 1,288  | 
|Equity derivative contracts:                   |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Equity derivatives                           |  |                    | 74        |  |            |  | 4      |                |  |  | -      |  |                   |  |  |           | -         |  |                |  | -      |  |  |  | -      | 
|                                               |  |                    | 74,742    |  |            |  | 2,333  |                |  |  | 1,790  |  |                   |  |  |           | 72,118    |  |                |  | 1,312  |  |  |  | 1,401  | 
|Derivatives designated as cash flow hedges:    |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|Exchange rate contracts:                       |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Cross-currency swaps                         |  |                    | 23,786    |  |            |  | 3,907  |                |  |  | 8      |  |                   |  |  |           | 22,727    |  |                |  | 989    |  |  |  | 1,146  | 
|Interest rate contracts:                       |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Interest rate swaps                          |  |                    | 12,683    |  |            |  | 120    |                |  |  | 82     |  |                   |  |  |           | 8,407     |  |                |  | 97     |  |  |  | 56     | 
|Equity derivative contracts:                   |  |                    |           |  |            |  |        |                |  |  |        |  |                   |  |  |           |           |  |                |  |        |  |  |  |        | 
|- Equity derivatives                           |  |                    | 24        |  |            |  | 9      |                |  |  | -      |  |                   |  |  |           | 21        |  |                |  | 4      |  |  |  | -      | 
|                                               |  |                    | 36,493    |  |            |  | 4,036  |                |  |  | 90     |  |                   |  |  |           | 31,155    |  |                |  | 1,090  |  |  |  | 1,202  | 
|Total derivatives held for hedging             |  |                    | 111,235   |  |            |  | 6,369  |                |  |  | 1,880  |  |                   |  |  |           | 103,273   |  |                |  | 2,402  |  |  |  | 2,603  | 
|Total derivatives                              |  |                    | 1,234,879 |  |            |  | 25,471 |                |  |  | 23,103 |  |                   |  |  |           | 1,040,793 |  |                |  | 20,911 |  |  |  | 21,508 | 





206Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





|                                               |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|---------------------------------------------- |  | ------------------ | ------- |  | ---------- |  | ----- | -------------- |  |  | ----- |  | ----------------- |  |  | --------- | ------- |  | -------------- |  | ----- |  |  |  | ----- | 
|                                               |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  | Company        | 
|                                               |  |                    |         |  |            |  |       | 2016           |  |  |       |  |                   |  |  |           |         |  | 2015           | 
|                                               |  |                    |         |  | Fair value |  |       |                |  |  |       |  | Fair value        | 
|Derivatives held for trading                   |  | Notional amount
£m |         |  | Assets
£m  |  |       | Liabilities
£m |  |  |       |  | Notional amount£m |  |  | Assets
£m |         |  | Liabilities
£m | 
|Exchange rate contracts:                       |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Cross-currency swaps                         |  |                    | 8,038   |  |            |  | 1,641 |                |  |  | 1,333 |  |                   |  |  |           | 6,301   |  |                |  | 966   |  |  |  | 1,340 | 
|- Foreign exchange swaps, options and forwards |  |                    | 3,268   |  |            |  | 66    |                |  |  | 66    |  |                   |  |  |           | 2,550   |  |                |  | 40    |  |  |  | 39    | 
|                                               |  |                    | 11,306  |  |            |  | 1,707 |                |  |  | 1,399 |  |                   |  |  |           | 8,851   |  |                |  | 1,006 |  |  |  | 1,379 | 
|Interest rate contracts:                       |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Interest rate swaps                          |  |                    | 43,536  |  |            |  | 1,704 |                |  |  | 835   |  |                   |  |  |           | 61,936  |  |                |  | 1,474 |  |  |  | 795   | 
|- Caps, floors and swaptions                   |  |                    | 1,452   |  |            |  | 6     |                |  |  | 5     |  |                   |  |  |           | 1,930   |  |                |  | 4     |  |  |  | 13    | 
|                                               |  |                    | 44,988  |  |            |  | 1,710 |                |  |  | 840   |  |                   |  |  |           | 63,866  |  |                |  | 1,478 |  |  |  | 808   | 
|Equity and credit contracts:                   |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Equity index swaps and similar products      |  |                    | 496     |  |            |  | 42    |                |  |  | 249   |  |                   |  |  |           | 607     |  |                |  | 41    |  |  |  | 236   | 
|                                               |  |                    | 496     |  |            |  | 42    |                |  |  | 249   |  |                   |  |  |           | 607     |  |                |  | 41    |  |  |  | 236   | 
|Total derivatives held for trading             |  |                    | 56,790  |  |            |  | 3,459 |                |  |  | 2,488 |  |                   |  |  |           | 73,324  |  |                |  | 2,525 |  |  |  | 2,423 | 
|                                               |  |                    |         |  |            |  |      
|Derivatives held for hedging                   |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|Derivatives designated as fair value hedges:   |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|Exchange rate contracts:                       |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Cross-currency swaps                         |  |                    | 4,188   |  |            |  | 899   |                |  |  | 157   |  |                   |  |  |           | 1,284   |  |                |  | 321   |  |  |  | -     | 
|Interest rate contracts:                       |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Interest rate swaps                          |  |                    | 45,916  |  |            |  | 549   |                |  |  | 758   |  |                   |  |  |           | 46,330  |  |                |  | 337   |  |  |  | 592   | 
|Equity derivative contracts:                   |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Equity derivatives                           |  |                    | 74      |  |            |  | 4     |                |  |  | -     |  |                   |  |  |           | -       |  |                |  | -     |  |  |  | -     | 
|                                               |  |                    | 50,178  |  |            |  | 1,452 |                |  |  | 915   |  |                   |  |  |           | 47,614  |  |                |  | 658   |  |  |  | 592   | 
|Derivatives designated as cash flow hedges:    |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|Exchange rate contracts:                       |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Cross-currency swaps                         |  |                    | 15,744  |  |            |  | 2,431 |                |  |  | -     |  |                   |  |  |           | 2,493   |  |                |  | 97    |  |  |  | -     | 
|Interest rate contracts:                       |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Interest rate swaps                          |  |                    | 8,179   |  |            |  | 39    |                |  |  | 37    |  |                   |  |  |           | 2,229   |  |                |  | 18    |  |  |  | 13    | 
|Equity derivative contracts:                   |  |                    |         |  |            |  |       |                |  |  |       |  |                   |  |  |           |         |  |                |  |       |  |  |  |       | 
|- Equity derivatives                           |  |                    | 24      |  |            |  | 10    |                |  |  | -     |  |                   |  |  |           | 21      |  |                |  | 4     |  |  |  | -     | 
|                                               |  |                    | 23,947  |  |            |  | 2,480 |                |  |  | 37    |  |                   |  |  |           | 4,743   |  |                |  | 119   |  |  |  | 13    | 
|Total derivatives held for hedging             |  |                    | 74,125  |  |            |  | 3,932 |                |  |  | 952   |  |                   |  |  |           | 52,357  |  |                |  | 777   |  |  |  | 605   | 
|Total derivatives                              |  |                    | 130,915 |  |            |  | 7,391 |                |  |  | 3,440 |  |                   |  |  |           | 125,681 |  |                |  | 3,302 |  |  |  | 3,028 | 

Included in the above balances are amounts due from Banco Santander SA and other subsidiaries of Banco Santander SA outside the Santander
UK group of £2,091m (2015: £1,320m) and £272m (2015: 458m), respectively, and amounts due to Banco Santander SA and other subsidiaries of Banco Santander SA outside the Santander UK group of £1,850m (2015: £1,502m) and
£272m (2015: £427m), respectively. The net exposures after collateral to the ultimate parent undertaking and fellow subsidiaries at 31 December 2016 amounted to £nil (2015: £nil) and £3m (2015: £nil)
respectively, with collateral held exceeding the net position.

Derivative assets and liabilities are reported on a gross basis on the balance sheet unless there is
a legally enforceable right to set off the recognised amounts and there is an intention to settle on a net basis, or to realise the assets and settle the liabilities simultaneously. Further information about offsetting is presented in Note 44.

The table below analyses the notional and fair values of derivatives by trading and settlement method.



|                            |  |                                |        |  |                                   |  |         |                                        |  |  |          |  |  |           |           |  |                                |  |  |                          |  |  |    |  |  |                                |        |  |                          |  |  |  |  |  |   |  |  |  |        | 
|--------------------------- |  | ------------------------------ | ------ |  | --------------------------------- |  | ------- | -------------------------------------- |  |  | -------- |  |  | --------- | --------- |  | ------------------------------ |  |  | ------------------------ |  |  | -- |  |  | ------------------------------ | ------ |  | ------------------------ |  |  |  |  |  | - |  |  |  | ------ | 
|                            |  | Notional                       |        |  |                                   |  |         | Asset                                  |  |  |          |  |  | Liability |          
|                            |  |                                |        |  | Traded over the counter           |  |         |                                        |  |  |          |  |  |           |           |  |                                |  |  |                          |  |  |    |  |  |                                |       
|2016                        |  | Traded onrecognisedexchanges£m |        |  | Settled bycentralcounterparties£m |  |         | Not settled
by centralcounterparties£m |  |  | Total
£m |  |  |           |           |  | Traded onrecognisedexchanges£m |  |  | Traded
over thecounter£m |  |  |    |  |  | Traded onrecognisedexchanges£m |        |  | Traded
over thecounter£m | 
|Exchange rate contracts     |  |                                | -      |  |                                   |  | -       |                                        |  |  | 193,126  |  |  |           | 193,126   |  |                                |  |  |                          |  |  | -  |  |  |                                | 8,322  |  |                          |  |  |  |  |  | - |  |  |  | 6,030  | 
|Interest rate contracts     |  |                                | 69,501 |  |                                   |  | 725,626 |                                        |  |  | 231,203  |  |  |           | 1,026,330 |  |                                |  |  |                          |  |  | 1  |  |  |                                | 15,814 |  |                          |  |  |  |  |  | - |  |  |  | 16,213 | 
|Equity and credit contracts |  |                                | 34     |  |                                   |  | -       |                                        |  |  | 15,389   |  |  |           | 15,423    |  |                                |  |  |                          |  |  | -  |  |  |                                | 1,334  |  |                          |  |  |  |  |  | 1 |  |  |  | 859    | 
|                            |  |                                | 69,535 |  |                                   |  | 725,626 |                                        |  |  | 439,718  |  |  |           | 1,234,879 |  |                                |  |  |                          |  |  | 1  |  |  |                                | 25,470 |  |                          |  |  |  |  |  | 1 |  |  |  | 23,102 | 
|                            |  |                                |        |  |                                   |  |         |                                        |  | 
|2015                        |  |                                |        |  |                                   |  |         |                                        |  |  |          |  |  |           |           |  |                                |  |  |                          |  |  |    |  |  |                                |        |  |                          |  |  |  |  |  |   |  |  |  |        | 
|Exchange rate contracts     |  |                                | -      |  |                                   |  | -       |                                        |  |  | 187,844  |  |  |           | 187,844   |  |                                |  |  |                          |  |  | -  |  |  |                                | 5,333  |  |                          |  |  |  |  |  | - |  |  |  | 6,195  | 
|Interest rate contracts     |  |                                | 38,633 |  |                                   |  | 529,471 |                                        |  |  | 247,479  |  |  |           | 815,583   |  |                                |  |  |                          |  |  | -  |  |  |                                | 14,105 |  |                          |  |  |  |  |  | 1 |  |  |  | 13,687 | 
|Equity and credit contracts |  |                                | 17,742 |  |                                   |  | -       |                                        |  |  | 19,624   |  |  |           | 37,366    |  |                                |  |  |                          |  |  | 88 |  |  |                                | 1,385  |  |                          |  |  |  |  |  | 2 |  |  |  | 1,623  | 
|                            |  |                                | 56,375 |  |                                   |  | 529,471 |                                        |  |  | 454,947  |  |  |           | 1,040,793 |  |                                |  |  |                          |  |  | 88 |  |  |                                | 20,823 |  |                          |  |  |  |  |  | 3 |  |  |  | 21,505 | 





Santander UK plc207



---

##### Table of Contents



Annual Report 2016

Financial
statements









Net gains or losses arising from fair value and cash flow hedges included in net trading and other income



|                                                              |  |         |       |  |         |  |      |         |  |  |         |  |  |         |       |  |         |  |      |  |  |  |       | 
|------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ---- | ------- |  |  | ------- |  |  | ------- | ----- |  | ------- |  | ---- |  |  |  | ----- | 
|                                                              |  |         |       |  |         |  |      | Group   |  |  |         |  |  |         |       |  | Company | 
|                                                              |  | 2016
£m |       |  | 2015
£m |  |      | 2014
£m |  |  | 2016
£m |  |  | 2015
£m |       |  | 2014
£m | 
|Fair value hedging:                                           |  |         |       |  |         |  |      |         |  |  |         |  |  |         |       |  |         |  |      |  |  |  |       | 
|- (Losses)/gains on hedging instruments                       |  |         | (274) |  |         |  | (26) |         |  |  | (297)   |  |  |         | (258) |  |         |  | 14   |  |  |  | (125) | 
|- Gains/(losses) on hedged items attributable to hedged
risks |  |         | 335   |  |         |  | 87   |         |  |  | 379     |  |  |         | 245   |  |         |  | (14) |  |  |  | 118   | 
|Fair value hedging ineffectiveness                            |  |         | 61    |  |         |  | 61   |         |  |  | 82      |  |  |         | (13)  |  |         |  | -    |  |  |  | (7)   | 
|Cash flow hedging ineffectiveness                             |  |         | (33)  |  |         |  | (81) |         |  |  | (94)    |  |  |         | 18    |  |         |  | 13   |  |  |  | -     | 
|                                                              |  |         | 28    |  |         |  | (20) |         |  |  | (12)    |  |  |         | 5     |  |         |  | 13   |  |  |  | (7)   | 

Santander UK hedges its exposures to various risks, including interest rate risk and foreign currency risk, in connection with certain
mortgage assets, covered bond issuances, and subordinated and senior debt securities in issue. The gains or losses arising on these assets and liabilities are presented in the table above on a combined basis.

Hedged cash flows

The following tables show when the hedged cash flows are
expected to occur and when they will affect income for designated cash flow hedges.



|                                                  |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|------------------------------------------------- |  | --------------- | ------- |  | -------------- |  | ------- | -------------- |  |  | -------------- |  |  | -------------- | ------- |  | --------------- |  | ------- | ---------------- |  |  | ---------------- |  |  | --------- | ----- |  |  |  | ----- |  |  |  | -------- | 
|                                                  |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  | Group     |      
|2016                                              |  | Up to 1
year £m |         |  | 1 - 2
years £m |  |         | 2 - 3
years £m |  |  | 3 - 4
years £m |  |  | 4 - 5
years £m |         |  | 5 - 10
years £m |  |         | 10 - 20
years £m |  |  | 20 - 30
years £m |  |  | Total
 £m |      
|Hedged forecast cash flows expected to occur:     |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 243     |  |                |  | 223     |                |  |  | 218            |  |  |                | 208     |  |                 |  | 151     |                  |  |  | 397              |  |  |           | 170   |  |  |  | 113   |  |  |  | 1,723    | 
|Forecast payable cash flows                       |  |                 | (4,055) |  |                |  | (3,427) |                |  |  | (3,708)        |  |  |                | (3,018) |  |                 |  | (2,350) |                  |  |  | (4,692)          |  |  |           | (569) |  |  |  | (408) |  |  |  | (22,227) | 
|                                                  |  |                 |         |  |                |  |         |                | 
|Hedged forecast cash flows affect profit or loss: |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 240     |  |                |  | 220     |                |  |  | 217            |  |  |                | 202     |  |                 |  | 146     |                  |  |  | 386              |  |  |           | 169   |  |  |  | 113   |  |  |  | 1,693    | 
|Forecast payable cash flows                       |  |                 | (4,059) |  |                |  | (3,392) |                |  |  | (3,681)        |  |  |                | (2,998) |  |                 |  | (2,274) |                  |  |  | (4,645)          |  |  |           | (565) |  |  |  | (401) |  |  |  | (22,015) | 
|                                                  |  |                 |         |  |                |  |         |                | 
|2015                                              |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Hedged forecast cash flows expected to occur:     |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 303     |  |                |  | 354     |                |  |  | 355            |  |  |                | 335     |  |                 |  | 285     |                  |  |  | 696              |  |  |           | 213   |  |  |  | 149   |  |  |  | 2,690    | 
|Forecast payable cash flows                       |  |                 | (4,260) |  |                |  | (3,446) |                |  |  | (2,308)        |  |  |                | (3,158) |  |                 |  | (3,936) |                  |  |  | (6,321)          |  |  |           | (493) |  |  |  | (358) |  |  |  | (24,280) | 
|                                                  |  |                 |         |  |                |  |         |                | 
|Hedged forecast cash flows affect profit or loss: |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 307     |  |                |  | 357     |                |  |  | 350            |  |  |                | 330     |  |                 |  | 273     |                  |  |  | 675              |  |  |           | 211   |  |  |  | 148   |  |  |  | 2,651    | 
|Forecast payable cash flows                       |  |                 | (4,249) |  |                |  | (3,438) |                |  |  | (2,278)        |  |  |                | (3,134) |  |                 |  | (3,914) |                  |  |  | (6,234)          |  |  |           | (488) |  |  |  | (353) |  |  |  | (24,088) | 
|                                                  |  |                 |         |  |                |  |         |                | 
|                                                  |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  | Company   |      
|2016                                              |  | Up to 1
year £m |         |  | 1 - 2
years £m |  |         | 2 - 3
years £m |  |  | 3 - 4
years £m |  |  | 4 - 5
years £m |         |  | 5 - 10
years £m |  |         | 10 - 20
years £m |  |  | 20 - 30
years £m |  |  | Total
 £m |      
|Hedged forecast cash flows expected to occur:     |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 125     |  |                |  | 122     |                |  |  | 118            |  |  |                | 110     |  |                 |  | 75      |                  |  |  | 244              |  |  |           | 141   |  |  |  | 113   |  |  |  | 1,048    | 
|Forecast payable cash flows                       |  |                 | (2,635) |  |                |  | (2,847) |                |  |  | (2,456)        |  |  |                | (1,823) |  |                 |  | (130)   |                  |  |  | (2,854)          |  |  |           | (228) |  |  |  | (408) |  |  |  | (13,381) | 
|                                                  |  |                 |         |  |                |  |         |                | 
|Hedged forecast cash flows affect profit or loss: |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 126     |  |                |  | 118     |                |  |  | 119            |  |  |                | 104     |  |                 |  | 75      |                  |  |  | 238              |  |  |           | 141   |  |  |  | 113   |  |  |  | 1,034    | 
|Forecast payable cash flows                       |  |                 | (2,659) |  |                |  | (2,823) |                |  |  | (2,431)        |  |  |                | (1,804) |  |                 |  | (118)   |                  |  |  | (2,818)          |  |  |           | (228) |  |  |  | (401) |  |  |  | (13,282) | 
|                                                  |  |                 |         |  |                |  |         |                | 
|2015                                              |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Hedged forecast cash flows expected to occur:     |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 42      |  |                |  | 50      |                |  |  | 57             |  |  |                | 61      |  |                 |  | 62      |                  |  |  | 241              |  |  |           | 165   |  |  |  | 149   |  |  |  | 827      | 
|Forecast payable cash flows                       |  |                 | (716)   |  |                |  | (72)    |                |  |  | (89)           |  |  |                | (72)    |  |                 |  | (897)   |                  |  |  | (592)            |  |  |           | (190) |  |  |  | (358) |  |  |  | (2,986)  | 
|                                                  |  |                 |         |  |                |  |         |                | 
|Hedged forecast cash flows affect profit or loss: |  |                 |         |  |                |  |         |                |  |  |                |  |  |                |         |  |                 |  |         |                  |  |  |                  |  |  |           |       |  |  |  |       |  |  |  |          | 
|Forecast receivable cash flows                    |  |                 | 42      |  |                |  | 51      |                |  |  | 57             |  |  |                | 61      |  |                 |  | 62      |                  |  |  | 240              |  |  |           | 165   |  |  |  | 148   |  |  |  | 826      | 
|Forecast payable cash flows                       |  |                 | (716)   |  |                |  | (72)    |                |  |  | (89)           |  |  |                | (71)    |  |                 |  | (893)   |                  |  |  | (582)            |  |  |           | (189) |  |  |  | (353) |  |  |  | (2,965)  | 

There were no transactions for which cash flow hedge accounting had to be ceased during the years ended 31 December 2016 as a result
of the cash flows no longer being expected to occur. In 2015, there was one cash flow hedge of equity price risk for which hedge accounting ceased as a result of the cash flows no longer being expected to occur.

During the year, gains and losses transferred from the cash flow hedging reserve to net interest income were a net gain of £167m (2015: £157m, 2014:
£112m) and to net trading and other income were a net gain of £3,909m (2015: loss of £462m, 2014: loss of £539m).

During the year, the
Company transferred gains from the cash flow hedging reserve to net interest income of £42m (2015: £5m) and to net trading and other income of £2,212m (2015: £76m).





208Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





13. FINANCIAL ASSETS DESIGNATED AT FAIR VALUE



|                                 |  |         |       |  |         |  |       |         |  |  |         |  |  |  |    | 
|-------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | -- | 
|                                 |  |         |       |  | Group   |  |       |         |  |  | Company | 
|                                 |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Loans and advances to customers: |  |         |       |  |         |  |       |         |  |  |         |  |  |  |    | 
|- Loans to housing associations  |  |         | 1,215 |  |         |  | 1,453 |         |  |  | -       |  |  |  | -  | 
|- Other loans                    |  |         | 516   |  |         |  | 438   |         |  |  | 10      |  |  |  | -  | 
|                                 |  |         | 1,731 |  |         |  | 1,891 |         |  |  | 10      |  |  |  | -  | 
|Debt securities:                 |  |         |       |  |         |  |       |         |  |  |         |  |  |  |    | 
|- Mortgage-backed securities     |  |         | 133   |  |         |  | 209   |         |  |  | -       |  |  |  | -  | 
|- Other asset-backed securities  |  |         | 36    |  |         |  | 62    |         |  |  | 36      |  |  |  | 30 | 
|- Other securities               |  |         | 240   |  |         |  | 236   |         |  |  | 39      |  |  |  | 30 | 
|                                 |  |         | 409   |  |         |  | 507   |         |  |  | 75      |  |  |  | 60 | 
|                                 |  |         | 2,140 |  |         |  | 2,398 |         |  |  | 85      |  |  |  | 60 | 

Loans and advances to customers represent loans to housing associations secured on residential property and other loans.

| | - | Loans to housing associations secured on residential property which, at the date of their origination, were managed, and their performance evaluated, on a fair value basis in accordance with a documented investment
strategy, and information about them was provided on that basis to management. Since 2009, the Santander UK groups policy has been not to designate similar new loans at fair value through profit or loss
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Other loans representing a portfolio of roll-up mortgages, are managed, and their performance evaluated, on a fair value basis in accordance with a documented investment strategy, and information about them is provided
on that basis to management.
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Debt securities comprise holdings of mortgage-backed securities, other asset-backed securities and other debt
securities principally representing reversionary UK property securities. These securities are managed and their performance evaluated on a fair value basis in accordance with a documented investment strategy, and information about them is provided
on that basis to management.

The maximum exposure to credit risk on loans and advances designated as held at fair value through profit or loss at the balance sheet
date was mitigated by the Santander UK group having a charge over the residential properties in respect of lending to housing associations. See Maximum exposure and net exposure to credit risk in the Credit risk review
section of the Risk review.

The net gain during the year attributable to changes in credit risk for loans and advances designated at fair value was £40m
(2015: £39m, 2014: £10m). The cumulative net loss attributable to changes in credit risk for loans and advances designated at fair value at 31 December 2016 was £169m (2015: £209m).





Santander UK plc209



---

##### Table of Contents



Annual Report 2016

Financial
statements









14. LOANS AND ADVANCES TO BANKS



|                                                                                                  |  |         |       |  |         |  |       |         |  |  |         |  |  |  |        | 
|------------------------------------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ------ | 
|                                                                                                  |  | Group   |       |  | Company | 
|                                                                                                  |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Placements with other
banks               - securities purchased under resale agreements          |  |         | 1,462 |  |         |  | 1,247 |         |  |  | -       |  |  |  | -      | 
|-
other                                                                                           |  |         | 2,885 |  |         |  | 2,293 |         |  |  | 1,988   |  |  |  | 1,330  | 
|Amounts due from Banco Santander   - securities purchased under resale agreements                 |  |         | -     |  |         |  | -     |         |  |  | -       |  |  |  | -      | 
|-
other                                                                                           |  |         | 1     |  |         |  | 8     |         |  |  | 1       |  |  |  | -      | 
|Amounts due from Santander UK group undertakings   -
securities purchased under resale agreements |  |         | -     |  |         |  | -     |         |  |  | -       |  |  |  | -      | 
|-
other                                                                                           |  |         | -     |  |         |  | -     |         |  |  | 23,710  |  |  |  | 17,632 | 
|                                                                                                  |  |         | 4,348 |  |         |  | 3,548 |         |  |  | 25,699  |  |  |  | 18,962 | 

During the years ended 31 December 2016, 2015 and 2014 no impairment losses were incurred.

Loans and advances to banks are repayable as follows:



|                                               |  |         |       |  |         |  |       |         |  |  |         |  |  |  |        | 
|---------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ------ | 
|                                               |  | Group   |       |  | Company | 
|Repayable:                                     |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|On demand                                      |  |         | 1,200 |  |         |  | 1,561 |         |  |  | 4,247   |  |  |  | 5,608  | 
|In not more than 3 months                      |  |         | 1,072 |  |         |  | 171   |         |  |  | 16,669  |  |  |  | 8,073  | 
|In more than 3 months but not more than 1 year |  |         | 265   |  |         |  | 33    |         |  |  | 1,546   |  |  |  | 3,513  | 
|In more than 1 year but not more than 5 years  |  |         | 1,523 |  |         |  | 1,284 |         |  |  | 2,577   |  |  |  | 1,150  | 
|In more than 5 years                           |  |         | 288   |  |         |  | 499   |         |  |  | 660     |  |  |  | 618    | 
|                                               |  |         | 4,348 |  |         |  | 3,548 |         |  |  | 25,699  |  |  |  | 18,962 | 

15. LOANS AND ADVANCES TO CUSTOMERS



|                                                                        |  |         |         |  |         |  |         |         |  |  |         |  |  |  |         | 
|----------------------------------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  |  | ------- | 
|                                                                        |  | Group   |         |  | Company | 
|                                                                        |  | 2016
£m |         |  | 2015
£m |  |         | 2016
£m |  |  | 2015
£m | 
|Advances secured on residential properties                              |  |         | 154,727 |  |         |  | 153,261 |         |  |  | 154,725 |  |  |  | 153,255 | 
|Corporate loans                                                         |  |         | 31,978  |  |         |  | 31,910  |         |  |  | 15,712  |  |  |  | 15,603  | 
|Finance leases                                                          |  |         | 6,730   |  |         |  | 6,306   |         |  |  | -       |  |  |  | -       | 
|Secured advances                                                        |  |         | 10      |  |         |  | 13      |         |  |  | -       |  |  |  | -       | 
|Other unsecured loans                                                   |  |         | 6,165   |  |         |  | 6,343   |         |  |  | 5,517   |  |  |  | 6,153   | 
|Amounts due from fellow Banco Santander subsidiaries and joint ventures |  |         | 1,112   |  |         |  | 1,367   |         |  |  | 9       |  |  |  | 10      | 
|Amounts due from Santander UK Group Holdings plc                        |  |         | 5       |  |         |  | 2       |         |  |  | 5       |  |  |  | 2       | 
|Amounts due from subsidiaries                                           |  |         | -       |  |         |  | -       |         |  |  | 25,586  |  |  |  | 7,759   | 
|Loans and advances to customers                                         |  |         | 200,727 |  |         |  | 199,202 |         |  |  | 201,554 |  |  |  | 182,782 | 
|Less: impairment loss allowances                                        |  |         | (989)   |  |         |  | (1,157) |         |  |  | (980)   |  |  |  | (1,174) | 
|Loans and advances to customers, net of impairment loss
allowances      |  |         | 199,738 |  |         |  | 198,045 |         |  |  | 200,574 |  |  |  | 181,608 | 
|                                                                        |  |         |         | 
|Repayable:                                                              |  |         |         |  |         |  |         |         |  |  |         | 
|On demand                                                               |  |         | 1,273   |  |         |  | 1,243   |         |  |  | 866     |  |  |  | 1,096   | 
|In no more than 3 months                                                |  |         | 6,993   |  |         |  | 4,684   |         |  |  | 7,315   |  |  |  | 3,810   | 
|In more than 3 months but not more than 1 year                          |  |         | 6,205   |  |         |  | 5,687   |         |  |  | 6,927   |  |  |  | 4,823   | 
|In more than 1 year but not more than 5 years                           |  |         | 28,485  |  |         |  | 28,783  |         |  |  | 30,957  |  |  |  | 21,262  | 
|In more than 5 years                                                    |  |         | 157,771 |  |         |  | 158,805 |         |  |  | 155,489 |  |  |  | 151,791 | 
|Loans and advances to customers                                         |  |         | 200,727 |  |         |  | 199,202 |         |  |  | 201,554 |  |  |  | 182,782 | 
|Less: impairment loss allowances                                        |  |         | (989)   |  |         |  | (1,157) |         |  |  | (980)   |  |  |  | (1,174) | 
|Loans and advances to customers, net of impairment loss
allowances      |  |         | 199,738 |  |         |  | 198,045 |         |  |  | 200,574 |  |  |  | 181,608 | 





210Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Movement in impairment loss allowances:



|                                          |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|----------------------------------------- |  | ---------------------------------------- | ----- |  | ------------------ |  | ----- | ----------------- |  |  | --------------------------- |  |  | -------- | ----- |  |  |  | ----- | 
|                                          |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  | Group    |      
|2016                                      |  | Loans secured
on residential property
£m |       |  | Corporate
loans £m |  |       | Finance
leases £m |  |  | Other
unsecured advances
£m |  |  | Total
£m |      
|At 1 January 2016:                        |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | 26    |  |                    |  | 237   |                   |  |  | -                           |  |  |          | -     |  |  |  | 263   | 
|- Collective                              |  |                                          | 133   |  |                    |  | 45    |                   |  |  | 12                          |  |  |          | 78    |  |  |  | 268   | 
|- Incurred but not yet observed           |  |                                          | 265   |  |                    |  | 113   |                   |  |  | 57                          |  |  |          | 191   |  |  |  | 626   | 
|                                          |  |                                          | 424   |  |                    |  | 395   |                   |  |  | 69                          |  |  |          | 269   |  |  |  | 1,157 | 
|Charge/(release) to the income statement: |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | (6)   |  |                    |  | 78    |                   |  |  | -                           |  |  |          | -     |  |  |  | 72    | 
|- Collective                              |  |                                          | 6     |  |                    |  | (1)   |                   |  |  | 12                          |  |  |          | 174   |  |  |  | 191   | 
|- Incurred but not yet observed           |  |                                          | (116) |  |                    |  | (18)  |                   |  |  | 35                          |  |  |          | (32)  |  |  |  | (131) | 
|                                          |  |                                          | (116) |  |                    |  | 59    |                   |  |  | 47                          |  |  |          | 142   |  |  |  | 132   | 
|Write-offs and other items(1)             |  |                                          | (29)  |  |                    |  | (72)  |                   |  |  | (3)                         |  |  |          | (196) |  |  |  | (300) | 
|At 31 December 2016:                      |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | 20    |  |                    |  | 247   |                   |  |  | -                           |  |  |          | -     |  |  |  | 267   | 
|- Collective                              |  |                                          | 110   |  |                    |  | 40    |                   |  |  | 13                          |  |  |          | 73    |  |  |  | 236   | 
|- Incurred but not yet observed           |  |                                          | 149   |  |                    |  | 95    |                   |  |  | 100                         |  |  |          | 142   |  |  |  | 486   | 
|                                          |  |                                          | 279   |  |                    |  | 382   |                   |  |  | 113                         |  |  |          | 215   |  |  |  | 989   | 
|                                          |  |                                          |       |  |                   
|2015                                      |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |      
|At 1 January 2015:                        |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | 27    |  |                    |  | 354   |                   |  |  | -                           |  |  |          | -     |  |  |  | 381   | 
|- Collective                              |  |                                          | 221   |  |                    |  | 58    |                   |  |  | 7                           |  |  |          | 85    |  |  |  | 371   | 
|- Incurred but not yet observed           |  |                                          | 331   |  |                    |  | 146   |                   |  |  | 47                          |  |  |          | 163   |  |  |  | 687   | 
|                                          |  |                                          | 579   |  |                    |  | 558   |                   |  |  | 54                          |  |  |          | 248   |  |  |  | 1,439 | 
|Charge/(release) to the income statement: |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | (1)   |  |                    |  | 39    |                   |  |  | -                           |  |  |          | -     |  |  |  | 38    | 
|- Collective                              |  |                                          | (56)  |  |                    |  | (15)  |                   |  |  | 12                          |  |  |          | 248   |  |  |  | 189   | 
|- Incurred but not yet observed           |  |                                          | (66)  |  |                    |  | (30)  |                   |  |  | 8                           |  |  |          | 17    |  |  |  | (71)  | 
|                                          |  |                                          | (123) |  |                    |  | (6)   |                   |  |  | 20                          |  |  |          | 265   |  |  |  | 156   | 
|Write-offs and other items(1)             |  |                                          | (32)  |  |                    |  | (157) |                   |  |  | (5)                         |  |  |          | (244) |  |  |  | (438) | 
|At 31 December 2015:                      |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | 26    |  |                    |  | 237   |                   |  |  | -                           |  |  |          | -     |  |  |  | 263   | 
|- Collective                              |  |                                          | 133   |  |                    |  | 45    |                   |  |  | 12                          |  |  |          | 78    |  |  |  | 268   | 
|- Incurred but not yet observed           |  |                                          | 265   |  |                    |  | 113   |                   |  |  | 57                          |  |  |          | 191   |  |  |  | 626   | 
|                                          |  |                                          | 424   |  |                    |  | 395   |                   |  |  | 69                          |  |  |          | 269   |  |  |  | 1,157 | 
|                                          |  |                                          |       |  |                   
|2014                                      |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |      
|At 1 January 2014:                        |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | 39    |  |                    |  | 388   |                   |  |  | -                           |  |  |          | -     |  |  |  | 427   | 
|- Collective                              |  |                                          | 264   |  |                    |  | 94    |                   |  |  | 8                           |  |  |          | 80    |  |  |  | 446   | 
|- Incurred but not yet observed           |  |                                          | 290   |  |                    |  | 151   |                   |  |  | 36                          |  |  |          | 205   |  |  |  | 682   | 
|                                          |  |                                          | 593   |  |                    |  | 633   |                   |  |  | 44                          |  |  |          | 285   |  |  |  | 1,555 | 
|Charge/(release) to the income statement: |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | (12)  |  |                    |  | 116   |                   |  |  | -                           |  |  |          | -     |  |  |  | 104   | 
|- Collective                              |  |                                          | 13    |  |                    |  | (36)  |                   |  |  | 6                           |  |  |          | 277   |  |  |  | 260   | 
|- Incurred but not yet observed           |  |                                          | 41    |  |                    |  | (5)   |                   |  |  | 11                          |  |  |          | (42)  |  |  |  | 5     | 
|                                          |  |                                          | 42    |  |                    |  | 75    |                   |  |  | 17                          |  |  |          | 235   |  |  |  | 369   | 
|Write-offs and other items(1)             |  |                                          | (56)  |  |                    |  | (150) |                   |  |  | (7)                         |  |  |          | (272) |  |  |  | (485) | 
|At 31 December 2014:                      |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Observed                                |  |                                          |       |  |                    |  |       |                   |  |  |                             |  |  |          |       |  |  |  |       | 
|- Individual                              |  |                                          | 27    |  |                    |  | 354   |                   |  |  | -                           |  |  |          | -     |  |  |  | 381   | 
|- Collective                              |  |                                          | 221   |  |                    |  | 58    |                   |  |  | 7                           |  |  |          | 85    |  |  |  | 371   | 
|- Incurred but not yet observed           |  |                                          | 331   |  |                    |  | 146   |                   |  |  | 47                          |  |  |          | 163   |  |  |  | 687   | 
|                                          |  |                                          | 579   |  |                    |  | 558   |                   |  |  | 54                          |  |  |          | 248   |  |  |  | 1,439 | 

|(1) | Mortgage write-offs exclude the effect of the unwind over time of the discounting in estimating losses, as described in the accounting policy Impairment of financial assets in Note 1. Mortgage write-offs
including this effect were £33m (2015: £40m).
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





Santander UK plc211



---

##### Table of Contents



Annual Report 2016

Financial
statements











|                                         |  |                                          |       |  |                                  |  |     |                    |  |  |                             |  |  |          |       |  |  |  |       | 
|---------------------------------------- |  | ---------------------------------------- | ----- |  | -------------------------------- |  | --- | ------------------ |  |  | --------------------------- |  |  | -------- | ----- |  |  |  | ----- | 
|                                         |  |                                          |       |  |                                  |  |     |                    |  |  |                             |  |  | Company  |      
|                                         |  | Loans secured
on residential property
£m |       |  | Amounts
due from subsidiaries
£m |  |     | Corporate
loans £m |  |  | Other
unsecured advances
£m |  |  | Total
£m |      
|At 1 January 2016                        |  |                                          | 426   |  |                                  |  | 232 |                    |  |  | 321                         |  |  |          | 195   |  |  |  | 1,174 | 
|Charge/(release) to the income statement |  |                                          | (117) |  |                                  |  | -   |                    |  |  | 28                          |  |  |          | 148   |  |  |  | 59    | 
|Write-offs and other items               |  |                                          | (32)  |  |                                  |  | -   |                    |  |  | (58)                        |  |  |          | (163) |  |  |  | (253) | 
|At 31 December 2016                      |  |                                          | 277   |  |                                  |  | 232 |                    |  |  | 291                         |  |  |          | 180   |  |  |  | 980   | 
|                                         |  |                                          |       |  |                                 
|At 1 January 2015                        |  |                                          | 579   |  |                                  |  | 232 |                    |  |  | 388                         |  |  |          | 207   |  |  |  | 1,406 | 
|Charge/(release) to the income statement |  |                                          | (122) |  |                                  |  | -   |                    |  |  | 33                          |  |  |          | 191   |  |  |  | 102   | 
|Write-offs and other items               |  |                                          | (31)  |  |                                  |  | -   |                    |  |  | (100)                       |  |  |          | (203) |  |  |  | (334) | 
|At 31 December 2015                      |  |                                          | 426   |  |                                  |  | 232 |                    |  |  | 321                         |  |  |          | 195   |  |  |  | 1,174 | 
|                                         |  |                                          |       |  |                                 
|At 1 January 2014                        |  |                                          | 593   |  |                                  |  | 232 |                    |  |  | 402                         |  |  |          | 162   |  |  |  | 1,389 | 
|Charge to the income statement           |  |                                          | 42    |  |                                  |  | -   |                    |  |  | 92                          |  |  |          | 213   |  |  |  | 347   | 
|Write-offs and other items               |  |                                          | (56)  |  |                                  |  | -   |                    |  |  | (106)                       |  |  |          | (168) |  |  |  | (330) | 
|At 31 December 2014                      |  |                                          | 579   |  |                                  |  | 232 |                    |  |  | 388                         |  |  |          | 207   |  |  |  | 1,406 | 

Recoveries of loans and advances, net of collection costs:



|     |  |                                         |   |  |                    |  |   |                   |  |  |                             |  |  |          |     |  |  |  |     | 
|---- |  | --------------------------------------- | - |  | ------------------ |  | - | ----------------- |  |  | --------------------------- |  |  | -------- | --- |  |  |  | --- | 
|     |  |                                         |   |  |                    |  |   |                   |  |  |                             |  |  | Group    |    
|     |  | Loanssecured
on residential property
£m |   |  | Corporate
loans £m |  |   | Finance
leases £m |  |  | Other
unsecured advances
£m |  |  | Total
£m |    
|2016 |  |                                         | 4 |  |                    |  | 3 |                   |  |  | 2                           |  |  |          | 56  |  |  |  | 65  | 
|2015 |  |                                         | 2 |  |                    |  | 3 |                   |  |  | 2                           |  |  |          | 83  |  |  |  | 90  | 
|2014 |  |                                         | 3 |  |                    |  | 4 |                   |  |  | 2                           |  |  |          | 102 |  |  |  | 111 | 

Loans and advances to customers have the following interest rate structures:



|                                 |  |         |         |  |         |  |         |         |  |  |         |  |  |  |         | 
|-------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  |  | ------- | 
|                                 |  |         |         |  | Group   |  |         |         |  |  | Company | 
|                                 |  | 2016
£m |         |  | 2015
£m |  |         | 2016
£m |  |  | 2015
£m | 
|Fixed rate                       |  |         | 109,595 |  |         |  | 104,501 |         |  |  | 115,734 |  |  |  | 96,472  | 
|Variable rate                    |  |         | 91,132  |  |         |  | 94,701  |         |  |  | 85,820  |  |  |  | 86,310  | 
|Less: impairment loss allowances |  |         | (989)   |  |         |  | (1,157) |         |  |  | (980)   |  |  |  | (1,174) | 
|                                 |  |         | 199,738 |  |         |  | 198,045 |         |  |  | 200,574 |  |  |  | 181,608 | 

Finance lease and hire purchase contract receivables may be analysed as follows:



|                                     |  |         |       |  |         |  |       | 
|------------------------------------ |  | ------- | ----- |  | ------- |  | ----- | 
|                                     |  | Group   |      
|Gross investment:                    |  | 2016
£m |       |  | 2015
£m | 
|Within 1 year                        |  |         | 3,047 |  |         |  | 3,264 | 
|Between 1-5 years                    |  |         | 3,906 |  |         |  | 3,405 | 
|In more than 5 years                 |  |         | 264   |  |         |  | 253   | 
|                                     |  |         | 7,217 |  |         |  | 6,922 | 
|Less: unearned future finance income |  |         | (487) |  |         |  | (616) | 
|Net investment                       |  |         | 6,730 |  |         |  | 6,306 | 

The net investment in finance leases and hire purchase contracts represents amounts recoverable as follows:



|                     |  |         |       |  |         |  |       | 
|-------------------- |  | ------- | ----- |  | ------- |  | ----- | 
|                     |  | Group   |      
|                     |  | 2016
£m |       |  | 2015
£m | 
|Within 1 year        |  |         | 2,864 |  |         |  | 2,937 | 
|Between 1-5 years    |  |         | 3,670 |  |         |  | 3,191 | 
|In more than 5 years |  |         | 196   |  |         |  | 178   | 
|                     |  |         | 6,730 |  |         |  | 6,306 | 

At 31 December 2016 and 2015, the Company had no finance lease and hire purchase contract receivables. The Santander UK group enters
into finance leasing arrangements primarily for the financing of motor vehicles and a range of assets to its corporate customers. Included in the carrying value of net investment in finance leases and hire purchase contracts is £19m (2015:
£38m) of unguaranteed residual value at the end of the current lease terms, which is expected to be recovered through re-letting or sale. Contingent rent income of £4m (2015: £4m, 2014: £5m) was earned during the year, which
was classified in Interest and similar income.

Finance lease receivable balances are secured over the asset leased. The Santander UK group is not
permitted to sell or repledge the asset in the absence of default by the lessee. The Directors consider that the carrying amount of the finance lease receivables approximates to their fair value.

Included within loans and advances to customers are advances assigned to bankruptcy remote structured entities and Abbey Covered Bonds LLP. These loans provide security
to issues of covered bonds and asset or mortgage-backed securities made by the Santander UK group. See Note 16 for further details.





212Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





16. SECURITISATIONS AND COVERED BONDS

The Santander UK group uses structured entities to securitise some of the mortgage and other loans to customers that it originates. The Santander UK group also issues
covered bonds, which are guaranteed by a pool of the Santander UK groups mortgage loans that it has transferred into Abbey Covered Bonds LLP. The Santander UK group issues mortgage-backed securities, other asset-backed securities and covered
bonds mainly in order to obtain diverse, low cost funding, but also to be used as collateral for raising funds via third party bilateral secured funding transactions or for creating collateral which could in the future be used for liquidity
purposes. The Santander UK group has successfully used bilateral secured transactions as an additional form of medium-term funding; this has allowed the Santander UK group to further diversify its medium-term funding investor base. The Santander UK
groups principal securitisation programmes and covered bond programme, together with the balances of the advances subject to securitisation and the carrying value of the notes in issue at 31 December 2016 and 2015 are listed below. The
related notes in issue are set out in Note 30.

Loans and advances to customers include portfolios of residential mortgage loans, and receivables derived from credit
agreements with retail customers for the purchases of financed vehicles, which are subject to non-recourse finance arrangements. These loans and receivables have been purchased by, or assigned to, structured entities or Abbey Covered Bonds LLP, and
have been funded primarily through the issue of mortgage-backed securities, other asset-backed securities or covered bonds. No gain or loss has been recognised as a result of these sales. The structured entities and Abbey Covered Bonds LLP are
consolidated as subsidiaries. The Company and its subsidiaries do not own directly, or indirectly, any of the share capital of any of the structured entities.

a) Securitisations

The gross assets securitised at 31 December 2016 and 2015 under the structures described below were:



|                                 |  |                            |        |  |                            |  |        | 
|-------------------------------- |  | -------------------------- | ------ |  | -------------------------- |  | ------ | 
|                                 |  | 2016                       |        |  | 2015                       | 
|                                 |  | Gross assetssecuritised
£m |        |  | Gross assetssecuritised
£m | 
|Master Trust Structures:         |  |                            |        |  |                            |  |        | 
|- Holmes                         |  |                            | 5,560  |  |                            |  | 7,045  | 
|- Fosse                          |  |                            | 7,182  |  |                            |  | 8,902  | 
|- Langton                        |  |                            | 5,211  |  |                            |  | 6,683  | 
|Other securitisation structures: |  |                            |        |  |                            |  |        | 
|- Motor                          |  |                            | 1,117  |  |                            |  | 1,069  | 
|- Auto ABS UK Loans              |  |                            | 1,260  |  |                            |  | 1,138  | 
|                                 |  |                            | 20,330 |  |                            |  | 24,837 | 

i) Master Trust Structures

The Santander UK
group makes use of a type of securitisation known as a master trust structure. In this structure, a pool of assets is assigned to a trust company by the asset originator. A funding entity acquires a beneficial interest in the pool of assets held by
the trust company with funds borrowed from qualifying structured entities, which at the same time issue asset-backed securities to third-party investors or the Santander UK group. The trust company holds the pool of assets on trust for the funding
entity and the originator. The originator holds a beneficial interest over the share of the pool of assets not purchased by the funding entity, known as the seller share.

The Company and its subsidiaries are under no obligation to support any losses that may be incurred by the securitisation companies or holders of the securities and do
not intend to provide such further support. Holders of the securities are only entitled to obtain payment of principal and interest to the extent that the resources of the securitisation companies are sufficient to support such payments, and the
holders of the securities have agreed in writing not to seek recourse in any other form.

Santander UK plc and its subsidiaries receive payments from the
securitisation companies in respect of fees for administering the loans, and payment of deferred consideration for the sale of the loans. Santander UK plc and its subsidiaries have no right or obligation to repurchase any securitised loan, except if
certain representations and warranties given by Santander UK plc or its subsidiaries at the time of transfer are breached and, in certain cases, if there is a product switch.

Holmes

Outstanding balances of assets securitised and notes in issue
(non-recourse finance) at 31 December 2016 and 2015 were:



|                                                             |  |                                |  |                             |       |  |                  |  |       |                                             |  |  |                             |  |  |                   |       |  |                                             |  |       |  |  |  |       | 
|------------------------------------------------------------ |  | ------------------------------ |  | --------------------------- | ----- |  | ---------------- |  | ----- | ------------------------------------------- |  |  | --------------------------- |  |  | ----------------- | ----- |  | ------------------------------------------- |  | ----- |  |  |  | ----- | 
|                                                             |  |                                |  |                             |       |  |                  |  |       | 2016                                        |  |  |                             |  |  |                   |       |  | 2015                                        | 
|Securitisation company                                       |  | Closing date
of securitisation |  | Gross assets
securitised £m |       |  | Notes inissue
£m |  |       | Issued to
Santander UK plc as collateral
£m |  |  | Gross assets
securitised £m |  |  | Notes in
issue £m |       |  | Issued to
Santander UK plc as collateral
£m | 
|Holmes Master Issuer plc  2010/1                            |  | 12 November 2010               |  |                             | 318   |  |                  |  | 383   |                                             |  |  | -                           |  |  |                   | 1,199 |  |                                             |  | 674   |  |  |  | 601   | 
|Holmes Master Issuer plc  2011/1                            |  | 9 February 2011                |  |                             | -     |  |                  |  | -     |                                             |  |  | -                           |  |  |                   | 809   |  |                                             |  | 409   |  |  |  | 451   | 
|Holmes Master Issuer plc  2011/3                            |  | 21 September 2011              |  |                             | 512   |  |                  |  | 618   |                                             |  |  | -                           |  |  |                   | 599   |  |                                             |  | 637   |  |  |  | -     | 
|Holmes Master Issuer plc  2012/1                            |  | 24 January 2012                |  |                             | 98    |  |                  |  | 118   |                                             |  |  | -                           |  |  |                   | 778   |  |                                             |  | 216   |  |  |  | 612   | 
|Holmes Master Issuer plc  2012/2                            |  | 17 April 2012                  |  |                             | 585   |  |                  |  | 706   |                                             |  |  | -                           |  |  |                   | 960   |  |                                             |  | 845   |  |  |  | 176   | 
|Holmes Master Issuer plc  2012/3                            |  | 7 June 2012                    |  |                             | 426   |  |                  |  | 514   |                                             |  |  | -                           |  |  |                   | 606   |  |                                             |  | 645   |  |  |  | -     | 
|Holmes Master Issuer plc  2013/1                            |  | 30 May 2013                    |  |                             | 28    |  |                  |  | -     |                                             |  |  | 34                          |  |  |                   | 443   |  |                                             |  | 386   |  |  |  | 85    | 
|Holmes Master Issuer plc  2016/1                            |  | 26 May 2016                    |  |                             | 1,017 |  |                  |  | 644   |                                             |  |  | 584                         |  |  |                   | -     |  |                                             |  | -     |  |  |  | -     | 
|Beneficial interest in mortgages held by Holmes Trustees Ltd |  |                                |  |                             | 2,576 |  |                  |  | -     |                                             |  |  | -                           |  |  |                   | 1,651 |  |                                             |  | -     |  |  |  | -     | 
|                                                             |  |                                |  |                             | 5,560 |  |                  |  | 2,983 |                                             |  |  | 618                         |  |  |                   | 7,045 |  |                                             |  | 3,812 |  |  |  | 1,925 | 
|Less: Held by the Santander UK group                         |  |                                |  |                             |       |  | -                |  |       |                                             |  |  |                             |  |  |                   |       |  | -                                           |  |       |  |  | 
|Total securitisations (See Note 30)                          |  |                                |  |                             |       |  | 2,983            |  |       |                                             |  |  |                             |  |  |                   |       |  | 3,812                                       |  |       |  |  | 





Santander UK plc213



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##### Table of Contents



Annual Report 2016

Financial
statements









Using a master trust structure, Santander UK plc has assigned portfolios of residential mortgages and their related security to Holmes Trustees Limited, a trust company
that holds the portfolios of mortgages on trust for Santander UK plc and Holmes Funding Limited. Proceeds from notes issued to third party investors or the Santander UK group by structured entities under the Holmes master trust structure have been
loaned to Holmes Funding Limited, which in turn used the funds to purchase its referred beneficial interests in the portfolio of assets held by Holmes Trustees Limited. The minimum value of assets required to be held by Holmes Trustees Limited is a
function of the notes in issue under the Holmes master trust structure and Santander UK plcs required minimum share. The Holmes securitisation companies have placed cash deposits totalling £231m (2015: £303m), which have been
accumulated to finance the redemption of a number of securities issued by the Holmes securitisation companies. The share of Holmes Funding Limited in the trust assets is therefore reduced by this amount.

Holmes Funding Limited has a beneficial interest of £3bn (2015: £5.4bn) in the residential mortgage loans held by Holmes Trustees Limited, the remaining
share of the beneficial interest in residential mortgage loans held by Holmes Trustees Limited belongs to Santander UK plc.

In 2016, £1.2bn (2015: £nil)
of mortgage-backed notes were issued from Holmes Master Issuer plc. Mortgage-backed securities totalling £3.7bn (2015: £2.7bn) equivalent were redeemed during the year.

Fosse

Outstanding balances of assets securitised and notes in issue
(non-recourse finance) at 31 December 2016 and 2015 were:



|                                                                |  |                                |  |                             |       |  |                  |  |       |                                           |  |  |                            |  |  |                  |       |  |                                           |  |       |  |  |  |       | 
|--------------------------------------------------------------- |  | ------------------------------ |  | --------------------------- | ----- |  | ---------------- |  | ----- | ----------------------------------------- |  |  | -------------------------- |  |  | ---------------- | ----- |  | ----------------------------------------- |  | ----- |  |  |  | ----- | 
|                                                                |  |                                |  |                             |       |  |                  |  |       | 2016                                      |  |  |                            |  |  |                  |       |  | 2015                                      | 
|Securitisation company                                          |  | Closing date
of securitisation |  | Gross assets
securitised £m |       |  | Notes inissue
£m |  |       | Issued toSantander UK plcas collateral
£m |  |  | Grossassets
securitised £m |  |  | Notes inissue
£m |       |  | Issued toSantander UK plcas collateral
£m | 
|Fosse Master Issuer plc  2010/1                                |  | 12 March 2010                  |  |                             | 446   |  |                  |  | 535   |                                           |  |  | -                          |  |  |                  | 494   |  |                                           |  | 535   |  |  |  | -     | 
|Fosse Master Issuer plc  2010/3                                |  | 27 July 2010                   |  |                             | -     |  |                  |  | -     |                                           |  |  | -                          |  |  |                  | 742   |  |                                           |  | 803   |  |  |  | -     | 
|Fosse Master Issuer plc  2011/1                                |  | 25 May 2011                    |  |                             | -     |  |                  |  | -     |                                           |  |  | -                          |  |  |                  | 1,256 |  |                                           |  | 392   |  |  |  | 967   | 
|Fosse Master Issuer plc  2011/2                                |  | 6 December 2011                |  |                             | 204   |  |                  |  | 211   |                                           |  |  | 34                         |  |  |                  | 513   |  |                                           |  | 320   |  |  |  | 235   | 
|Fosse Master Issuer plc  2012/1                                |  | 22 May 2012                    |  |                             | 700   |  |                  |  | 738   |                                           |  |  | 105                        |  |  |                  | 812   |  |                                           |  | 774   |  |  |  | 105   | 
|Fosse Master Issuer plc  2014/1                                |  | 19 June 2014                   |  |                             | 366   |  |                  |  | 441   |                                           |  |  | -                          |  |  |                  | 463   |  |                                           |  | 501   |  |  |  | -     | 
|Fosse Master Issuer plc  2015/1                                |  | 24 March 2015                  |  |                             | 559   |  |                  |  | 673   |                                           |  |  | -                          |  |  |                  | 805   |  |                                           |  | 871   |  |  |  | -     | 
|Beneficial interest in mortgages held by Fosse Master Trust
Ltd |  |                                |  |                             | 4,907 |  |                  |  | -     |                                           |  |  | -                          |  |  |                  | 3,817 |  |                                           |  | -     |  |  |  | -     | 
|                                                                |  |                                |  |                             | 7,182 |  |                  |  | 2,598 |                                           |  |  | 139                        |  |  |                  | 8,902 |  |                                           |  | 4,196 |  |  |  | 1,307 | 
|Less: Held by the Santander UK group                            |  |                                |  | -                           |       |  |                  |  |       |                                           |  |  |                            |  |  | -                |       |  |                                           |  |      
|Total securitisations (See Note 30)                             |  |                                |  |                             |       |  |                  |  | 2,598 |                                           |  |  |                            |  |  |                  |       |  |                                           |  | 4,196 |  |  |  |       | 

The Fosse Master Trust securitisation structure was established in 2006. Notes were issued by Fosse Master Issuer plc to third party
investors and the proceeds loaned to Fosse Funding (No. 1) Limited, which in turn used the funds to purchase beneficial interests in mortgages held by Fosse Trustee Limited. Both Fosse Funding (No.1) Limited and Santander UK plc have a beneficial
interest in the mortgages held in trust by Fosse Trustee Limited. The minimum value of assets required to be held by Fosse Trustee Limited is a function of the notes in issue under the Fosse master trust structure and Santander UK plcs
required minimum share.

Fosse Master Issuer plc has cash deposits totalling £260m (2015: £439m), which have been accumulated to finance the redemption
of a number of securities issued by Fosse Master Issuer plc. Fosse Funding (No.1) Limiteds beneficial interest in the assets held by Fosse Trustee Limited is therefore reduced by this amount.

In 2016, there were no mortgage-backed notes issued from Fosse Master Issuer plc (2015: £1bn). Mortgage-backed notes totalling £2.9bn (2015: £5.1bn)
equivalent were redeemed during the year.

Langton

Outstanding balances of
assets securitised and notes in issue (non-recourse finance) at 31 December 2016 and 2015 were:



|                                                                  |  |                                |  |                             |       |  |                   |  |   |                                           |  |  |                             |  |  |                   |       |  |                                           |  |   |  |  |  |       | 
|----------------------------------------------------------------- |  | ------------------------------ |  | --------------------------- | ----- |  | ----------------- |  | - | ----------------------------------------- |  |  | --------------------------- |  |  | ----------------- | ----- |  | ----------------------------------------- |  | - |  |  |  | ----- | 
|                                                                  |  |                                |  |                             |       |  |                   |  |   | 2016                                      |  |  |                             |  |  |                   |       |  | 2015                                      | 
|Securitisation company                                            |  | Closing date
of securitisation |  | Gross assets
securitised £m |       |  | Notes in
issue £m |  |   | Issued toSantander UK plcas collateral
£m |  |  | Gross assets
securitised £m |  |  | Notes in
issue £m |       |  | Issued toSantander UK plcas collateral
£m | 
|Langton Securities (2010-1) plc (1)                               |  | 1 October 2010                 |  |                             | 987   |  |                   |  | - |                                           |  |  | 984                         |  |  |                   | 1,363 |  |                                           |  | - |  |  |  | 1,384 | 
|Langton Securities (2010-1) plc (2)                               |  | 12 October 2010                |  |                             | -     |  |                   |  | - |                                           |  |  | -                           |  |  |                   | 876   |  |                                           |  | - |  |  |  | 889   | 
|Langton Securities (2010-2) plc (1)                               |  | 12 October 2010                |  |                             | -     |  |                   |  | - |                                           |  |  | -                           |  |  |                   | 601   |  |                                           |  | - |  |  |  | 610   | 
|Langton Securities (2008-1) plc (2)                               |  | 23 March 2011                  |  |                             | 1,376 |  |                   |  | - |                                           |  |  | 1,372                       |  |  |                   | 1,352 |  |                                           |  | - |  |  |  | 1,372 | 
|Langton Securities (2010-2) plc (2)                               |  | 28 July 2011                   |  |                             | -     |  |                   |  | - |                                           |  |  | -                           |  |  |                   | 1,580 |  |                                           |  | - |  |  |  | 1,604 | 
|Beneficial interest in mortgages held by Langton Master Trust
Ltd |  |                                |  |                             | 2,848 |  |                   |  | - |                                           |  |  | -                           |  |  |                   | 911   |  |                                           |  | - |  |  |  | -     | 
|                                                                  |  |                                |  |                             | 5,211 |  |                   |  | - |                                           |  |  | 2,356                       |  |  |                   | 6,683 |  |                                           |  | - |  |  |  | 5,859 | 

The Langton Master Trust securitisation structure was established in 2008. Notes were issued by the Langton Securities entities to
Santander UK plc for the purpose of creating collateral to be used for funding and liquidity. Each entity loaned the proceeds of the Notes issued to Langton Funding (No.1) Limited, which in turn used the funds to purchase a beneficial interest in
the mortgages held by Langton Mortgages Trustee Limited. Both Langton Funding (No.1) Limited and Santander UK plc have a beneficial interest in the mortgages held in trust by Langton Mortgages Trustee Limited. The minimum value of assets required to
be held by Langton Mortgages Trustee Limited is a function of the notes in issue under the Langton master trust structure and Santander UK plcs required minimum share.

In 2016 and 2015, there were no issuances from any of the Langton issuing companies. Mortgage-backed notes totalling £3.4bn (2015: £1.3bn) equivalent were
redeemed during the year.





214Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





ii) Other securitisation structures

The Santander UK group issues notes through pass-through stand-alone vehicles for the securitisation of receivables derived from credit agreements with retail customers
for the purchases of financed vehicles.

Motor

Outstanding balances of
assets securitised and notes in issue (non-recourse finance) at 31 December 2016 and 2015 were:



|                                     |  |                                |  |                             |       |  |                   |  |     |                                                     |  |  |                             |  |  |                   |       |  |                                                     |  |     |  |  |  |     | 
|------------------------------------ |  | ------------------------------ |  | --------------------------- | ----- |  | ----------------- |  | --- | --------------------------------------------------- |  |  | --------------------------- |  |  | ----------------- | ----- |  | --------------------------------------------------- |  | --- |  |  |  | --- | 
|                                     |  |                                |  |                             |       |  |                   |  |     | 2016                                                |  |  |                             |  |  |                   |       |  | 2015                                                | 
|Securitisation company               |  | Closing date
of securitisation |  | Gross assets
securitised £m |       |  | Notes in
issue £m |  |     | Issued
toSantanderConsumer (UK)plc as collateral £m |  |  | Gross assets
securitised £m |  |  | Notes in
issue £m |       |  | Issued
toSantanderConsumer (UK)plc as collateral £m | 
|Motor 2014-1 plc                     |  | 16 April 2014                  |  |                             | 125   |  |                   |  | -   |                                                     |  |  | 136                         |  |  |                   | 343   |  |                                                     |  | 213 |  |  |  | 163 | 
|Motor 2015-1 plc                     |  | 2 March 2015                   |  |                             | 436   |  |                   |  | 352 |                                                     |  |  | 136                         |  |  |                   | 726   |  |                                                     |  | 628 |  |  |  | 136 | 
|Motor 2016-1 plc                     |  | 15 December 2016               |  |                             | 556   |  |                   |  | 298 |                                                     |  |  | 300                         |  |  |                   | -     |  |                                                     |  | -   |  |  |  | -   | 
|                                     |  |                                |  |                             | 1,117 |  |                   |  | 650 |                                                     |  |  | 572                         |  |  |                   | 1,069 |  |                                                     |  | 841 |  |  |  | 299 | 
|Less: Held by the Santander UK group |  |                                |  | -                           |       |  |                   |  |     |                                                     |  |  |                             |  |  | -                 |       |  |                                                     |  |    
|Total securitisations (See Note 30)  |  |                                |  |                             |       |  |                   |  | 650 |                                                     |  |  |                             |  |  |                   |       |  |                                                     |  | 841 |  |  |  |     | 

In 2016 there were issuances of £0.6bn (2015: £0.8bn) of asset-backed notes from the Motor securitisation structures.
Asset-backed notes totalling £0.5bn (2015: £0.9bn) equivalent were redeemed during the year. Motor 2016-1M Limited borrowed £0.2bn (2015: £nil) through an asset-backed senior loan facility.

Auto ABS UK Loans

Outstanding balances of assets securitised and notes in
issue (non-recourse finance) at 31 December 2016 and 2015 were:



|                                     |  |                                |  |                             |       |  |                   |  |       |                                                |  |  |                             |  |  |                   |       |  |                                                |  |     |  |  |  |     | 
|------------------------------------ |  | ------------------------------ |  | --------------------------- | ----- |  | ----------------- |  | ----- | ---------------------------------------------- |  |  | --------------------------- |  |  | ----------------- | ----- |  | ---------------------------------------------- |  | --- |  |  |  | --- | 
|                                     |  |                                |  |                             |       |  |                   |  |       | 2016                                           |  |  |                             |  |  |                   |       |  | 2015                                           | 
|Securitisation company               |  | Closing date
of securitisation |  | Gross assets
securitised £m |       |  | Notes in
issue £m |  |       | Issued to PSAFinance UKLimited ascollateral
£m |  |  | Gross assets
securitised £m |  |  | Notes in
issue £m |       |  | Issued to PSAFinance UKLimited ascollateral
£m | 
|Auto ABS UK Loans plc                |  | 30 April 2017                  |  |                             | 1,260 |  |                   |  | 1,275 |                                                |  |  | 113                         |  |  |                   | 1,138 |  |                                                |  | 996 |  |  |  | 188 | 
|                                     |  |                                |  |                             | 1,260 |  |                   |  | 1,275 |                                                |  |  | 113                         |  |  |                   | 1,138 |  |                                                |  | 996 |  |  |  | 188 | 
|Less: Held by the Santander UK group |  |                                |  | -                           |       |  |                   |  |       |                                                |  |  |                             |  |  | -                 |       |  |                                                |  |    
|Total securitisations (See Note 30)  |  |                                |  |                             |       |  | 1,275             |  |       |                                                |  |  |                             |  |  |                   |       |  | 996                                            |  |     |  |  | 

In 2016, asset-backed notes totalling £0.5bn (2015: £nil) were issued to new senior tranche investors. Additionally,
asset-backed notes totalling £0.4bn (2015: £nil) were redeemed during the year as the new investment allowed some existing investors to reduce their holdings. As part of the acquisition of PSA Finance UK Limited in the first half of
2015, the Santander UK group recognised £1.2bn notes issued through Auto ABS UK Loans plc.

b) Covered Bonds

The Santander UK group also issues covered bonds. In this structure, until 1 June 2016, Abbey National Treasury Services plc (the Issuer) issued covered bonds,
which are a direct, unsecured and unconditional obligation of the Issuer. The covered bonds benefitted from a guarantee from Santander UK plc and Abbey Covered Bonds LLP. The Issuer makes a term advance to Abbey Covered Bonds LLP equal to the
sterling proceeds of each issue of covered bonds. Abbey Covered Bonds LLP uses the proceeds of the term advance to purchase portfolios of residential mortgage loans and their security from Santander UK plc. Under the terms of the guarantee, Abbey
Covered Bonds LLP has agreed to pay an amount equal to the guaranteed amounts when the same shall become due for payment but which would otherwise be unpaid by the Issuer or Santander UK plc.

With effect on and from 1 June 2016, Santander UK plc was substituted in place of Abbey National Treasury Services plc as principal obligor under the covered bond
programme. This substitution was effected pursuant to a deed of substitution, novation and amendment dated 26 April 2016. On and from 1 June 2016, the covered bonds continue to be guaranteed, in respect of payments of interest and
principal, by Abbey Covered Bonds LLP, but are not guaranteed by any other entity in the Santander UK group. These steps were taken as Santander UK began repositioning the structure of its funding vehicles in preparation for Banking Reform.

Outstanding balances of loans and advances assigned to the covered bond programme at 31 December 2016 and 2015 were:



|                                        |  |                          |        |  |                   |  |         |                                            |  |  |                          |  |  |                   |        |  |                                           |  |         |  |  |  |   | 
|--------------------------------------- |  | ------------------------ | ------ |  | ----------------- |  | ------- | ------------------------------------------ |  |  | ------------------------ |  |  | ----------------- | ------ |  | ----------------------------------------- |  | ------- |  |  |  | - | 
|                                        |  |                          |        |  |                   |  |         | 2016                                       |  |  |                          |  |  |                   |        |  | 2015                                      | 
|                                        |  | Gross assets
assigned £m |        |  | Notes in
issue £m |  |         | Issued toSantander UK plc
as collateral £m |  |  | Gross assets
assigned £m |  |  | Notes in
issue £m |        |  | Issued toSantander UK plc ascollateral
£m | 
|Euro 35bn Global Covered Bond Programme |  |                          | 20,263 |  |                   |  | 17,941  |                                            |  |  | -                        |  |  |                   | 23,613 |  |                                           |  | 17,760  |  |  |  | - | 
|Less: Held by the Santander UK group    |  |                          |        |  |                   |  | (1,313) |                                            |  |  |                          |  |  |                   |        |  |                                           |  | (1,720) |  |  |  |   | 
|Total Covered Bonds (See Note 30)       |  |                          |        |  |                   |  | 16,628  |                                            |  |  |                          |  |  |                   |        |  |                                           |  | 16,040  |  |  |  |   | 





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Annual Report 2016

Financial
statements









17. TRANSFERS OF FINANCIAL ASSETS NOT QUALIFYING FOR DERECOGNITION

The Santander UK group enters into transactions in the normal course of business by which it transfers recognised financial assets directly to third parties or to
structured entities. These transfers may give rise to the full or partial derecognition of the financial assets concerned.

|- | Full derecognition occurs when the Santander UK group transfers its contractual right to receive cash flows from the financial assets, or retains the right but assumes an obligation to pass on the cash flows from the
asset, and transfers substantially all the risks and rewards of ownership. The risks include credit, interest rate, currency, prepayment and other price risks
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | Partial derecognition occurs when the Santander UK group sells or otherwise transfers financial assets in such a way that some but not substantially all of the risks and rewards of ownership are transferred but control
is retained. These financial assets are recognised on the balance sheet to the extent of the Santander UK groups continuing involvement. There are no assets subject to partial derecognition.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Financial assets that do not qualify for derecognition consist of (i) securities held by counterparties as collateral under repurchase agreements,
(ii) securities lent under securities lending agreements, and (iii) loans that have been securitised under arrangements by which the Santander UK group retains a continuing involvement in such transferred assets.

As the substance of the sale and repurchase and securities lending transactions is secured borrowings, the asset collateral continues to be recognised in full and the
related liability reflecting the Santander UK groups obligation to repurchase the transferred assets for a fixed price at a future date is recognised in deposits from banks or customers, as appropriate. As a result of these transactions, the
Santander UK group is unable to use, sell or pledge the transferred assets for the duration of the transaction. The Santander UK group remains exposed to interest rate risk and credit risk on these pledged instruments. The counterpartys
recourse is not limited to the transferred assets.

The Santander UK group securitisation transfers do not qualify for derecognition. The Santander UK group remains
exposed to credit risks arising from the mortgage loans and has retained control of the transferred assets. Circumstances in which the Santander UK group has continuing involvement in the transferred assets may include retention of servicing rights
over the transferred assets, entering into a derivative transaction with the securitisation vehicle, retaining an interest in the securitisation vehicle or providing a cash reserve fund. Where the Santander UK group has continuing involvement it
continues to recognise the transferred assets to the extent of its continuing involvement and recognises an associated liability. The net carrying amount of the transferred assets and associated liabilities reflects the rights and obligations that
the Santander UK group has retained.

The following table analyses the carrying amount of financial assets that did not qualify for derecognition and their
associated financial liabilities:



|                                      |  |                                    |        |  |                                        |  |        |                                    |  |  |                                        |  |  |  |        | 
|------------------------------------- |  | ---------------------------------- | ------ |  | -------------------------------------- |  | ------ | ---------------------------------- |  |  | -------------------------------------- |  |  |  | ------ | 
|                                      |  | Group                              |       
|                                      |  | 2016                               |        |  | 2016                                   |  |        | 2015                               |  |  | 2015                                   | 
|                                      |  | Carryingamount oftransferredassets |        |  | Carryingamount ofassociatedliabilities |  |        | Carryingamount oftransferredassets |  |  | Carryingamount ofassociatedliabilities | 
|Nature of transaction                 |  | £m                                 |        |  | £m                                     |  |        | £m                                 |  |  | £m                                     | 
|Sale and repurchase agreements        |  |                                    | 5,600  |  |                                        |  | 3,831  |                                    |  |  | 3,856                                  |  |  |  | 3,564  | 
|Securities lending agreements         |  |                                    | 244    |  |                                        |  | 117    |                                    |  |  | 650                                    |  |  |  | 600    | 
|Securitisations (See Notes 16 and 30) |  |                                    | 15,066 |  |                                        |  | 7,434  |                                    |  |  | 18,049                                 |  |  |  | 9,844  | 
|                                      |  |                                    | 20,910 |  |                                        |  | 11,382 |                                    |  |  | 22,555                                 |  |  |  | 14,008 | 
|                                      | 
|                                      |  | Company                            |       
|                                      |  | 2016                               |        |  | 2016                                   |  |        | 2015                               |  |  | 2015                                   | 
|                                      |  | Carryingamount oftransferredassets |        |  | Carryingamount ofassociatedliabilities |  |        | Carryingamount oftransferredassets |  |  | Carryingamount ofassociatedliabilities | 
|Nature of transaction                 |  | £m                                 |        |  | £m                                     |  |        | £m                                 |  |  | £m                                     | 
|Sale and repurchase agreements        |  |                                    | 1,023  |  |                                        |  | 1,023  |                                    |  |  | -                                      |  |  |  | -      | 
|                                      |  |                                    | 1,023  |  |                                        |  | 1,023  |                                    |  |  | -                                      |  |  |  | -      | 

18. LOANS AND RECEIVABLES SECURITIES



|                                                               |  |         |     |  |         |  |    |         |  |  |         |  |  |  |       | 
|-------------------------------------------------------------- |  | ------- | --- |  | ------- |  | -- | ------- |  |  | ------- |  |  |  | ----- | 
|                                                               |  | Group   |     |  | Company | 
|                                                               |  | 2016
£m |     |  | 2015
£m |  |    | 2016
£m |  |  | 2015
£m | 
|Asset-backed securities                                        |  |         | 257 |  |         |  | 52 |         |  |  | 795     |  |  |  | 4,990 | 
|Other                                                          |  |         | -   |  |         |  | -  |         |  |  | 1       |  |  |  | 1     | 
|Loans and receivables securities                               |  |         | 257 |  |         |  | 52 |         |  |  | 796     |  |  |  | 4,991 | 
|Less: Impairment allowances                                    |  |         | -   |  |         |  | -  |         |  |  | -       |  |  |  | -     | 
|Loans and receivables securities, net of impairment
allowances |  |         | 257 |  |         |  | 52 |         |  |  | 796     |  |  |  | 4,991 | 

The Companys loans and receivables securities consist of investments in debt securities issued by Santander UK group entities.





216Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





19. AVAILABLE-FOR-SALE SECURITIES



|                                                                                                                        |  |                  |       |  |              |  |        |               |  |  |                  |  |  |          |        |  |  |  |        | 
|----------------------------------------------------------------------------------------------------------------------- |  | ---------------- | ----- |  | ------------ |  | ------ | ------------- |  |  | ---------------- |  |  | -------- | ------ |  |  |  | ------ | 
|                                                                                                                        |  |                  |       |  | Group        |  |        | Company       | 
|                                                                                                                        |  |                  |       |  | 2016
£m      |  |        | 2015
£m       |  |  | 2016
£m          |  |  | 2015
£m  |       
|Debt securities                                                                                                         |  |                  |       |  |              |  | 10,449 |               |  |  | 8,883            |  |  |          | 9,974  |  |  |  | 7,716  | 
|Equity securities                                                                                                       |  |                  |       |  |              |  | 112    |               |  |  | 129              |  |  |          | 95     |  |  |  | 112    | 
|                                                                                                                        |  |                  |       |  |              |  | 10,561 |               |  |  | 9,012            |  |  |          | 10,069 |  |  |  | 7,828  | 
|Debt securities can be analysed by contractual maturity and the
related weighted average yield for the year as follows: | 
|                                                                                                                        |  |                  |       |  |              |  |        |               |  |  | Group            | 
|2016                                                                                                                    |  | Within
1 year £m |       |  | 1-5
years £m |  |        | 5-10
years £m |  |  | Over 10
years £m |  |  | Total
£m |       
|Issued by public bodies:                                                                                                |  |                  |       |  |              |  |        |               |  |  |                  |  |  |          |        |  |  |  |        | 
|- UK Government                                                                                                         |  |                  | 300   |  |              |  | 508    |               |  |  | 1,240            |  |  |          | 175    |  |  |  | 2,223  | 
|- Other Government                                                                                                      |  |                  | -     |  |              |  | 416    |               |  |  | 1,149            |  |  |          | -      |  |  |  | 1,565  | 
|Banks, Building societies and Other issuers                                                                             |  |                  | 307   |  |              |  | 3,359  |               |  |  | 2,382            |  |  |          | 613    |  |  |  | 6,661  | 
|                                                                                                                        |  |                  | 607   |  |              |  | 4,283  |               |  |  | 4,771            |  |  |          | 788    |  |  |  | 10,449 | 
|Weighted average yield                                                                                                  |  |                  | 1.87% |  |              |  | 1.85%  |               |  |  | 2.20%            |  |  |          | 1.46%  |  |  |  | 1.98%  | 
|                                                                                                                        |  |                  |       |  |             
|2015                                                                                                                    |  |                  |       |  |              |  |        |               |  |  |                  |  |  |          |       
|Issued by public bodies:                                                                                                |  |                  |       |  |              |  |        |               |  |  |                  |  |  |          |        |  |  |  |        | 
|- UK Government                                                                                                         |  |                  | 617   |  |              |  | 837    |               |  |  | 1,510            |  |  |          | -      |  |  |  | 2,964  | 
|- Other Government                                                                                                      |  |                  | -     |  |              |  | 157    |               |  |  | 259              |  |  |          | -      |  |  |  | 416    | 
|Banks, Building societies and Other issuers                                                                             |  |                  | 281   |  |              |  | 2,156  |               |  |  | 2,431            |  |  |          | 635    |  |  |  | 5,503  | 
|                                                                                                                        |  |                  | 898   |  |              |  | 3,150  |               |  |  | 4,200            |  |  |          | 635    |  |  |  | 8,883  | 
|Weighted average yield                                                                                                  |  |                  | 2.55% |  |              |  | 1.78%  |               |  |  | 2.44%            |  |  |          | 1.56%  |  |  |  | 2.16%  | 

A significant portion of the debt securities are held in our eligible liquidity pool and consist mainly of government bonds and covered
bonds. Detailed disclosures can be found in the Liquidity risk section of the Risk review.

20. HELD-TO-MATURITY INVESTMENTS



|                |  |                   |       |  |         |  |   | 
|--------------- |  | ----------------- | ----- |  | ------- |  | - | 
|                |  | Group and Company |      
|                |  | 2016
£m           |       |  | 2015
£m | 
|Debt securities |  |                   | 6,648 |  |         |  | - | 

Debt securities can be analysed by contractual maturity and the related weighted average yield for the year as follows:



|                         |  |                  |   |  |              |  |   |               |  |  |                   |  |  |          |   |  |  |  |       | 
|------------------------ |  | ---------------- | - |  | ------------ |  | - | ------------- |  |  | ----------------- |  |  | -------- | - |  |  |  | ----- | 
|                         |  |                  |   |  |              |  |   |               |  |  | Group and Company | 
|2016                     |  | Within
1 year £m |   |  | 1-5
years £m |  |   | 5-10
years £m |  |  | Over10
years £m   |  |  | Total
£m |  
|UK Government securities |  |                  | - |  |              |  | - |               |  |  | 6,648             |  |  |          | - |  |  |  | 6,648 | 
|                         |  |                  |   |  |              |  |   |               |  |  |                   |  |  |          |   |  |  |  |       | 
|Weighted average yield   |  |                  | - |  |              |  | - |               |  |  | 1.76%             |  |  |          | - |  |  |  | 1.76% | 

During the year, the Santander UK group purchased a portfolio of UK Government debt securities which were classified as held-to-maturity
investments on acquisition. At 31 December 2015, the Santander UK group did not hold any held-to-maturity investments. A significant portion of the debt securities are held in our eligible liquidity pool and consist mainly of government bonds
and covered bonds. Detailed disclosures can be found in the Liquidity risk section of the Risk review.





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Annual Report 2016

Financial
statements









21. INTERESTS IN OTHER ENTITIES



|               |  |         |    |  |         |  |    |         |  |  |         |  |  |  |       | 
|-------------- |  | ------- | -- |  | ------- |  | -- | ------- |  |  | ------- |  |  |  | ----- | 
|               |  |         |    |  | Group   |  |    |         |  |  | Company | 
|               |  | 2016
£m |    |  | 2015
£m |  |    | 2016
£m |  |  | 2015
£m | 
|Subsidiaries   |  |         | -  |  |         |  | -  |         |  |  | 4,481   |  |  |  | 5,200 | 
|Joint ventures |  |         | 61 |  |         |  | 48 |         |  |  | 5       |  |  |  | 3     | 
|               |  |         | 61 |  |         |  | 48 |         |  |  | 4,486   |  |  |  | 5,203 | 

The Santander UK group consists of a parent company, Santander UK plc, incorporated in the UK and a number of subsidiaries and joint
ventures held directly and indirectly by the Company. The Company has no individually significant associates. Details of subsidiaries, joint ventures and associates are set out in the Shareholder Information section and form an integral part of
these financial statements.

a) Interests in subsidiaries

The Company holds directly or indirectly 100% of the issued ordinary share capital of its principal subsidiaries. All companies operate principally in their country of
incorporation or registration. Santander UK plc has branches in the Isle of Man and Jersey. Abbey National Treasury Services plc has branch offices in the US and the Cayman Islands.

The movement in the Companys interests in subsidiaries was as follows:



|                                                |  |         |       |  |               |  |       |                  |  |  |       | 
|----------------------------------------------- |  | ------- | ----- |  | ------------- |  | ----- | ---------------- |  |  | ----- | 
|                                                |  |         |       |  |               |  |       | Company          | 
|2016                                            |  | Cost
£m |       |  | Impairment
£m |  |       | Netbook value
£m | 
|At 1 January                                    |  |         | 5,754 |  |               |  | (554) |                  |  |  | 5,200 | 
|Reversal                                        |  |         | -     |  |               |  | 38    |                  |  |  | 38    | 
|Dissolution/Disposal                            |  |         | (110) |  |               |  | 84    |                  |  |  | (26)  | 
|Capital reduction of investment in subsidiaries |  |         | (731) |  |               |  | -     |                  |  |  | (731) | 
|At 31 December                                  |  |         | 4,913 |  |               |  | (432) |                  |  |  | 4,481 | 
|2015                                            |  |         |       |  |               |  |       |                  |  |  |       | 
|At 1 January                                    |  |         | 6,016 |  |               |  | (650) |                  |  |  | 5,366 | 
|Additions                                       |  |         | -     |  |               |  | (4)   |                  |  |  | (4)   | 
|Reversal                                        |  |         | -     |  |               |  | 77    |                  |  |  | 77    | 
|Dissolution/Disposal                            |  |         | (48)  |  |               |  | 23    |                  |  |  | (25)  | 
|Capital reduction of subsidiaries               |  |         | (214) |  |               |  | -     |                  |  |  | (214) | 
|At 31 December                                  |  |         | 5,754 |  |               |  | (554) |                  |  |  | 5,200 | 

On 3 February 2015, the Santander UK group through Santander Consumer (UK) plc (SCUK) purchased 50% of the shares of PSA Finance UK
Limited, a company that offers a range of consumer finance and insurance products and services for individuals, businesses and distribution networks in the automotive industry. PSA Finance UK Limited has been consolidated as SCUK has control through
its ability to direct the activities that most significantly affect SCUKs return.

In 2016 and 2015, the movements on interests in subsidiaries principally
represented changes in the capital invested in certain subsidiaries as a result of an internal reorganisation within the Santander UK group.

Subsidiaries with
significant non-controlling interests

The only subsidiary with significant non-controlling interests is PSA Finance UK Limited.



|                                                                                      |  |      |       |      |  |  |       | 
|------------------------------------------------------------------------------------- |  | ---- | ----- | ---- |  |  | ----- | 
|                                                                                      |  | 2016 |       | 2015
|Proportion of ownership interests and voting rights held by
non-controlling interests |  |      | 50%   |      |  |  | 50%   | 
|Place of business                                                                     |  |      | UK    |      |  |  | UK    | 
|                                                                                      |  |      | £m    |      |  |  | £m    | 
|Profit attributable to non-controlling interests                                      |  |      | 27    |      |  |  | 25    | 
|Accumulated non-controlling interests of the subsidiary                               |  |      | 150   |      |  |  | 135   | 
|Dividends paid to non-controlling interests                                           |  |      | 12    |      |  |  | -     | 
|Summarised financial information:                                                     |  |      |       |      |  |  |       | 
|- Total assets                                                                        |  |      | 3,450 |      |  |  | 3,448 | 
|- Total liabilities                                                                   |  |      | 3,417 |      |  |  | 3,399 | 
|- Profit for the year                                                                 |  |      | 55    |      |  |  | 50    | 
|- Total comprehensive income for the year                                             |  |      | 55    |      |  |  | 52    | 





218Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Interests in consolidated structured entities

Structured entities are formed by Santander UK to accomplish specific and well-defined objectives. Santander UK consolidates these structured entities when the substance
of the relationship indicates control, as described in Note 1. In addition to the structured entities disclosed in Note 16 which are used for securitisation and covered bond programmes, the only other structured entities consolidated by the
Santander UK group are described below. All the external assets in these entities are included in the financial statements and in relevant Notes of these Consolidated Financial Statements. Other than as set out below, no significant judgements were
required with respect to control or significant influence.

i) Guaranteed Investment Products 1 PCC (GIP)

GIP is a Guernsey-incorporated, closed-ended, protected cell company. The objective of each cell is to achieve capital growth for retail investors. In order to achieve
the investment objective, GIP, on behalf of the respective cells, has entered into transactions with Santander UK. Santander Guarantee Company, a Santander UK group company, also guarantees the shareholders of cells a fixed return on their
investment and/or the investment amount. GIP has no third party assets. Although the share capital is owned by the retail investors, Santander UK continues to have exposure to variable risks and returns through Santander Guarantee Companys
guarantee and has therefore consolidated this entity.

ii) Santander UK Foundation Limited

Santander UK Foundation Limited supports disadvantaged people throughout the UK through the charitable priorities of education and financial capability. The entity was
set up by Santander UK and all its revenue arise through donations from Santander UK, and its third party assets are minimal, comprising of available-for-sale assets of £15m (2015: £15m). This entity has been consolidated as Santander UK
directs its activities.

b) Interests in joint ventures

Santander UK does not have any individually material interests in joint ventures. As set out in the accounting policies in Note 1, interests in joint ventures are
accounted for using the equity method. In the year ended 31 December 2016, Santander UKs share in the profit after tax of its joint ventures was £13m (2015: £9m) before elimination of transactions between Santander UK and the
joint ventures. At 31 December 2016, the carrying amount of Santander UKs interest was £61m (2015: £48m). At 31 December 2016 and 2015, the joint ventures had no commitments and contingent liabilities.

c) Interests in unconsolidated structured entities

Structured entities sponsored by the Santander UK group

Santander UK has
interests in structured entities which it sponsors but does not control. Santander UK considers itself a sponsor of a structured entity when it facilitates the establishment of the structured entity. The structured entities sponsored but not
consolidated by Santander UK are as follows. Other than as set out below, no significant judgements were required with respect to control or significant influence.

i) Santander (UK) Common Investment Fund

In 2008, a common investment fund was
established to hold the assets of the Santander UK Group Pension Scheme. The Santander (UK) Common Investment Fund is not consolidated by Santander UK, but its assets of £11,125m (2015: £9,359m) are accounted for as part of the defined
benefit assets and obligations recognised on Santander UKs balance sheet. See Note 34 for further information about the entity. As this entity holds the assets of the pension scheme it is outside the scope of IFRS 10. Santander UKs
maximum exposure to loss is equal to the sum of the carrying amount of the assets held.

ii) Trust preferred entities

The trust preferred entities, Abbey National Capital Trust I and Abbey National Capital LP I are 100% owned finance subsidiaries (as defined in Regulation S-X under the
US Securities Act 1933, as amended) of Santander UK plc which were set up by Santander UK solely for the issuance of trust preferred securities to third parties and lend the funds on to other Santander UK companies. On 7 February 2000, Abbey
National Capital Trust I issued US$1bn of 8.963% Non-cumulative Trust Preferred Securities, which have been registered under the US Securities Act of 1933, as amended. Abbey National Capital Trust I serves solely as a passive vehicle holding the
partnership preferred securities issued by Abbey National Capital LP I and each has passed all the rights relating to such partnership preferred securities to the holders of trust preferred securities issued by Abbey National Capital Trust I. All of
the trust preferred securities and the partnership preferred securities have been fully and unconditionally guaranteed on a subordinated basis by Santander UK plc. The terms of the securities do not include any significant restrictions on the
ability of Santander UK plc to obtain funds, by dividend or loan, from any subsidiary. The trust preferred entities are not consolidated by Santander UK as Santander UK plc is not exposed to variability of returns from the entities.

iii) Grafton

In December 2016, ANTS plc established Grafton CLO 2016-1
Designated Activity Company (Grafton), a private limited liability company incorporated in Ireland, to issue a £100m Credit Linked Note to third party investors which references a portfolio of ANTS loans. Concurrently, Grafton sold
credit protection to ANTS in respect of that portfolio and, in return for a fee, is liable to make protection payment amounts to ANTS upon the occurrence of a credit event in relation to any of the referenced entities. Because the third party
investors have exposure, or rights, to the variable returns from Grafton, the company is not consolidated by Santander UK. The maximum exposure to loss is equal to any unamortised fees paid to Grafton in connection with the credit protection
outlined above.

Structured entities not sponsored by the Santander UK group

Santander UK also has interests in structured entities which it does not sponsor or control. These largely relate to the legacy treasury asset portfolio and consist of
holdings of mortgage and other asset-backed securities issued by entities that were established and/or sponsored by other unrelated financial institutions. Details of these securities are set out in Note 18. Management has concluded that the
Santander UK group has no control or significant influence over these entities and that the carrying value of the interests held in these entities represents the maximum exposure to loss.





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Annual Report 2016

Financial
statements









22. INTANGIBLE ASSETS



|                  |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|----------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                  |  | Group   |       |  | Company | 
|                  |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Goodwill          |  |         | 1,834 |  |         |  | 1,834 |         |  |  | 1,650   |  |  |  | 1,650 | 
|Other intangibles |  |         | 482   |  |         |  | 397   |         |  |  | 439     |  |  |  | 367   | 
|                  |  |         | 2,316 |  |         |  | 2,231 |         |  |  | 2,089   |  |  |  | 2,017 | 

a) Goodwill



|                          |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                          |  | Group   |       |  | Company | 
|                          |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Cost                      |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|At 1 January/ 31 December |  |         | 1,916 |  |         |  | 1,916 |         |  |  | 1,650   |  |  |  | 1,650 | 
|Accumulated impairment    |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|At 1 January/ 31 December |  |         | 82    |  |         |  | 82    |         |  |  |        |  |  |  |      | 
|Net book value            |  |         | 1,834 |  |         |  | 1,834 |         |  |  | 1,650   |  |  |  | 1,650 | 

Impairment of goodwill

During 2016 and 2015,
no impairment of goodwill was recognised. Impairment testing in respect of goodwill allocated to each cash-generating unit (CGU) is performed annually or more frequently if there are impairment indicators present. For the purpose of impairment
testing, the CGU are based on customer groups within the relevant business divisions.

The cash flow projections for each CGU are based on the five-year plan
prepared for regulatory purposes, based on Santander UKs 3-Year Plan and approved by the Santander UK plc Board. The assumptions included in the expected future cash flows for each CGU take into consideration the UK economic environment and
financial outlook within which the CGU operates. Key assumptions include projected GDP growth rates, the level of interest rates and the level and change in unemployment rates in the UK. The discount rate used to discount the cash flows is based on
a pre-tax rate that reflects the weighted average cost of capital allocated by Santander UK to investments in the business division in which the CGU operates. The growth rate used reflects managements five-year forecasts, with a terminal
growth rate for each year applied thereafter, in line with the estimated long-term average UK GDP growth rate.

Based on the conditions at the balance sheet date,
management determined that a reasonably possible change in any of the key assumptions described above would not cause an impairment of goodwill to be recognised.

The following CGUs include in their carrying values goodwill that comprises the goodwill reported by Santander UK. The CGUs do not carry on their balance sheets any
other intangible assets with indefinite useful lives.

2016



|                  |  |                             |  |             |       |  |                    |                                              |                 |  |      |                  |  |  |   | 
|----------------- |  | --------------------------- |  | ----------- | ----- |  | ------------------ | -------------------------------------------- | --------------- |  | ---- | ---------------- |  |  | - | 
|Business Division |  | CGU                         |  | Goodwill
£m |       |  | Basis of valuation |                                              | Discount
rate % |  |      | Growth
rate(1)
% | 
|Retail Banking    |  | Personal financial services |  |             | 1,625 |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 11.4 |                  |  |  | 2 | 
|Retail Banking    |  | Consumer finance            |  |             | 175   |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 11.4 |                  |  |  | 1 | 
|Retail Banking    |  | Private banking             |  |             | 30    |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 11.4 |                  |  |  | 1 | 
|Retail Banking    |  | Other                       |  |             | 4     |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 11.4 |                  |  |  | 2 | 
|                  |  |                             |  |             | 1,834 |  |                    |                                              |                 |  |      |                  |  |  |   | 
|                  |  |                             |  |             |      
|2015              |  |                             |  |             |       |  |                    |                                              |                 |  |      |                  |  |  |   | 
|Retail Banking    |  | Personal financial services |  |             | 1,625 |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 10.4 |                  |  |  | 3 | 
|Retail Banking    |  | Consumer finance            |  |             | 175   |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 10.4 |                  |  |  | 1 | 
|Retail Banking    |  | Private banking             |  |             | 30    |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 10.4 |                  |  |  | 1 | 
|Retail Banking    |  | Other                       |  |             | 4     |  |                    | Value in use: cash flow based on 5 year plan |                 |  | 10.4 |                  |  |  | 3 | 
|                  |  |                             |  |             | 1,834 |  |                    |                                              |                 |  |      |                  |  |  |   | 

|(1) | Average growth rate based on the five-year plan for the first five years and a growth rate of 2.0% (2015: 2.3%) applied thereafter.
|--- | -----------------------------------------------------------------------------------------------------------------------------------

In 2016, the discount rate increased by 1 percentage point to 11.4% (2015: 10.4%). The increase reflected changes in current market and economic conditions. In 2016, the
change in growth rates reflected Santander UKs updated strategic priorities in the context of forecast economic conditions.





220Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





b) Other intangibles



|                                      |  |         |      |  |         |  |     |         |  |  |         |  |  |  |     | 
|------------------------------------- |  | ------- | ---- |  | ------- |  | --- | ------- |  |  | ------- |  |  |  | --- | 
|                                      |  |         |      |  | Group   |  |     |         |  |  | Company | 
|                                      |  | 2016
£m |      |  | 2015
£m |  |     | 2016
£m |  |  | 2015
£m | 
|Cost                                  |  |         |      |  |         |  |     |         |  |  |         |  |  |  |     | 
|At 1 January                          |  |         | 601  |  |         |  | 516 |         |  |  | 630     |  |  |  | 560 | 
|Additions                             |  |         | 213  |  |         |  | 85  |         |  |  | 197     |  |  |  | 70  | 
|Disposals                             |  |         | (54) |  |         |  | -   |         |  |  | (54)    |  |  |  | -   | 
|At 31 December                        |  |         | 760  |  |         |  | 601 |         |  |  | 773     |  |  |  | 630 | 
|Accumulated amortisation / impairment |  |         |      |  |         |  |     |         |  |  |         |  |  |  |     | 
|At 1 January                          |  |         | 204  |  |         |  | 163 |         |  |  | 263     |  |  |  | 224 | 
|Charge for the year                   |  |         | 76   |  |         |  | 41  |         |  |  | 73      |  |  |  | 39  | 
|Disposals                             |  |         | (47) |  |         |  | -   |         |  |  | (47)    |  |  |  | -   | 
|Impairment during the year            |  |         | 45   |  |         |  | -   |         |  |  | 45      |  |  |  | -   | 
|At 31 December                        |  |         | 278  |  |         |  | 204 |         |  |  | 334     |  |  |  | 263 | 
|Net book value                        |  |         | 482  |  |         |  | 397 |         |  |  | 439     |  |  |  | 367 | 

Other intangible assets consist of computer software. The assessment of whether an asset is exhibiting indicators of impairment as well
as the calculation of impairment, which requires the estimate of future cash flows and fair values less costs to sell, also requires the preparation of cash flow forecasts and fair values for assets that may not be regularly bought and sold.

In 2016, intangible asset impairment write-downs primarily relate to a multi-entity banking platform developed for our non-ring-fenced bank under the original Banking
Reform structure.

23. PROPERTY, PLANT AND EQUIPMENT



|                           |  |             |       |  |                                  |  |       |                      |  |  |                          |  |  |          |      |  |  |  |       | 
|-------------------------- |  | ----------- | ----- |  | -------------------------------- |  | ----- | -------------------- |  |  | ------------------------ |  |  | -------- | ---- |  |  |  | ----- | 
|                           |  | Group       |      
|                           |  | Property
£m |       |  | Office fixtures
and equipment £m |  |       | Computer
software £m |  |  | Operating leaseassets
£m |  |  | Total
£m |     
|Cost:                      |  |             |       |  |                                  |  |       |                      |  |  |                          |  |  |          |      |  |  |  |       | 
|At 1 January 2016          |  |             | 1,071 |  |                                  |  | 1,316 |                      |  |  | 434                      |  |  |          | 106  |  |  |  | 2,927 | 
|Additions                  |  |             | 25    |  |                                  |  | 117   |                      |  |  | -                        |  |  |          | 19   |  |  |  | 161   | 
|Disposals                  |  |             | (41)  |  |                                  |  | (69)  |                      |  |  | -                        |  |  |          | (57) |  |  |  | (167) | 
|At 31 December 2016        |  |             | 1,055 |  |                                  |  | 1,364 |                      |  |  | 434                      |  |  |          | 68   |  |  |  | 2,921 | 
|Accumulated depreciation:  |  |             |       |  |                                  |  |       |                      |  |  |                          |  |  |          |      |  |  |  |       | 
|At 1 January 2016          |  |             | 197   |  |                                  |  | 697   |                      |  |  | 434                      |  |  |          | 2    |  |  |  | 1,330 | 
|Charge for the year        |  |             | 36    |  |                                  |  | 135   |                      |  |  | -                        |  |  |          | 30   |  |  |  | 201   | 
|Disposals                  |  |             | (23)  |  |                                  |  | (44)  |                      |  |  | -                        |  |  |          | (34) |  |  |  | (101) | 
|At 31 December 2016        |  |             | 210   |  |                                  |  | 788   |                      |  |  | 434                      |  |  |          | (2)  |  |  |  | 1,430 | 
|Net book value             |  |             | 845   |  |                                  |  | 576   |                      |  |  | -                        |  |  |          | 70   |  |  |  | 1,491 | 
|                           |  |             |       |  |                                  |  |       |                      |  |  |                          |  |  |          |      |  |  |  |       | 
|Cost:                      |  |             |       |  |                                  |  |       |                      |  |  |                          |  |  |          |      |  |  |  |       | 
|At 1 January 2015          |  |             | 1,099 |  |                                  |  | 1,136 |                      |  |  | 434                      |  |  |          | 143  |  |  |  | 2,812 | 
|Additions                  |  |             | 19    |  |                                  |  | 230   |                      |  |  | 1                        |  |  |          | 21   |  |  |  | 271   | 
|Disposals                  |  |             | (47)  |  |                                  |  | (50)  |                      |  |  | (1)                      |  |  |          | (58) |  |  |  | (156) | 
|At 31 December 2015        |  |             | 1,071 |  |                                  |  | 1,316 |                      |  |  | 434                      |  |  |          | 106  |  |  |  | 2,927 | 
|Accumulated depreciation:  |  |             |       |  |                                  |  |       |                      |  |  |                          |  |  |          |      |  |  |  |       | 
|At 1 January 2015          |  |             | 172   |  |                                  |  | 591   |                      |  |  | 417                      |  |  |          | 8    |  |  |  | 1,188 | 
|Charge for the year        |  |             | 36    |  |                                  |  | 134   |                      |  |  | 18                       |  |  |          | 39   |  |  |  | 227   | 
|Disposals                  |  |             | (25)  |  |                                  |  | (41)  |                      |  |  | (1)                      |  |  |          | (45) |  |  |  | (112) | 
|Impairment during the year |  |             | 14    |  |                                  |  | 13    |                      |  |  | -                        |  |  |          | -    |  |  |  | 27    | 
|At 31 December 2015        |  |             | 197   |  |                                  |  | 697   |                      |  |  | 434                      |  |  |          | 2    |  |  |  | 1,330 | 
|Net book value             |  |             | 874   |  |                                  |  | 619   |                      |  |  | -                        |  |  |          | 104  |  |  |  | 1,597 | 





Santander UK plc221



---

##### Table of Contents



Annual Report 2016

Financial
statements











|                           |  |             |       |  |                                  |  |       |                      |  |  |          |  |  |  |       | 
|-------------------------- |  | ----------- | ----- |  | -------------------------------- |  | ----- | -------------------- |  |  | -------- |  |  |  | ----- | 
|                           |  | Company     |      
|                           |  | Property
£m |       |  | Office fixtures
and equipment £m |  |       | Computer
software £m |  |  | Total
£m | 
|Cost:                      |  |             |       |  |                                  |  |       |                      |  |  |          |  |  |  |       | 
|At 1 January 2016          |  |             | 1,024 |  |                                  |  | 1,446 |                      |  |  | 362      |  |  |  | 2,832 | 
|Additions                  |  |             | 25    |  |                                  |  | 115   |                      |  |  | -        |  |  |  | 140   | 
|Disposals                  |  |             | (41)  |  |                                  |  | (66)  |                      |  |  | -        |  |  |  | (107) | 
|At 31 December 2016        |  |             | 1,008 |  |                                  |  | 1,495 |                      |  |  | 362      |  |  |  | 2,865 | 
|Accumulated depreciation:  |  |             |       |  |                                  |  |       |                      |  |  |          |  |  |  |       | 
|At 1 January 2016          |  |             | 362   |  |                                  |  | 842   |                      |  |  | 362      |  |  |  | 1,566 | 
|Charge for the year        |  |             | 31    |  |                                  |  | 129   |                      |  |  | -        |  |  |  | 160   | 
|Disposals                  |  |             | (23)  |  |                                  |  | (42)  |                      |  |  | -        |  |  |  | (65)  | 
|At 31 December 2016        |  |             | 370   |  |                                  |  | 929   |                      |  |  | 362      |  |  |  | 1,661 | 
|Net book value             |  |             | 638   |  |                                  |  | 566   |                      |  |  | -        |  |  |  | 1,204 | 
|                           |  |             |       |  |                                  |  |       |                      |  |  |          |  |  |  |       | 
|Cost:                      |  |             |       |  |                                  |  |       |                      |  |  |          |  |  |  |       | 
|At 1 January 2015          |  |             | 1,053 |  |                                  |  | 1,271 |                      |  |  | 361      |  |  |  | 2,685 | 
|Additions                  |  |             | 18    |  |                                  |  | 224   |                      |  |  | 1        |  |  |  | 243   | 
|Disposals                  |  |             | (47)  |  |                                  |  | (49)  |                      |  |  | -        |  |  |  | (96)  | 
|At 31 December 2015        |  |             | 1,024 |  |                                  |  | 1,446 |                      |  |  | 362      |  |  |  | 2,832 | 
|Accumulated depreciation:  |  |             |       |  |                                  |  |       |                      |  |  |          |  |  |  |       | 
|At 1 January 2015          |  |             | 340   |  |                                  |  | 739   |                      |  |  | 346      |  |  |  | 1,425 | 
|Charge for the year        |  |             | 33    |  |                                  |  | 129   |                      |  |  | 16       |  |  |  | 178   | 
|Disposals                  |  |             | (25)  |  |                                  |  | (39)  |                      |  |  | -        |  |  |  | (64)  | 
|Impairment during the year |  |             | 14    |  |                                  |  | 13    |                      |  |  | -        |  |  |  | 27    | 
|At 31 December 2015        |  |             | 362   |  |                                  |  | 842   |                      |  |  | 362      |  |  |  | 1,566 | 
|Net book value             |  |             | 662   |  |                                  |  | 604   |                      |  |  | -        |  |  |  | 1,266 | 

At 31 December 2016, capital expenditure contracted but not provided for in respect of property, plant and equipment was £48m
(2015: £46m). Of the carrying value at the balance sheet date, £22m (2015: £98m) related to assets under construction.

Operating lease assets

The Santander UK groups operating lease assets consist of motor vehicles and other assets leased to its corporate customers. The Company has no operating
lease assets. Future minimum lease receipts under non-cancellable operating leases are due over the following periods:



|                                             |  |         |    |  |         |  |    | 
|-------------------------------------------- |  | ------- | -- |  | ------- |  | -- | 
|                                             |  | Group   |   
|                                             |  | 2016
£m |    |  | 2015
£m | 
|In no more than 1 year                       |  |         | 24 |  |         |  | 25 | 
|In more than 1 year but no more than 5 years |  |         | 36 |  |         |  | 39 | 
|                                             |  |         | 60 |  |         |  | 64 | 

Contingent rent income of £4m (2015: £4m) was recognised in the year.

24. DEFERRED TAX

The table below shows the deferred
tax assets and liabilities including the movement in the deferred tax account during the year:



|                                      |  |                                   |      |  |                      |  |       |                 |  |  |                    |  |  |                          |      |  |                              |  |     |                            |  |  |       |  |  |  |      |  |  |  |       | 
|------------------------------------- |  | --------------------------------- | ---- |  | -------------------- |  | ----- | --------------- |  |  | ------------------ |  |  | ------------------------ | ---- |  | ---------------------------- |  | --- | -------------------------- |  |  | ----- |  |  |  | ---- |  |  |  | ----- | 
|                                      |  | Group                             |     
|                                      |  | Fair value offinancialinstruments |      |  | Pensionremeasurement |  |       | Cash flowhedges |  |  | Available-for-sale |  |  | Tax lossescarriedforward |      |  | Accelerated
tax depreciation |  |     | Other
temporarydifferences |  |  | Total | 
|                                      |  | £m                                |      |  | £m                   |  |       | £m              |  |  | £m                 |  |  | £m                       |      |  | £m                           |  |     | £m                         |  |  | £m    | 
|At 1 January 2016                     |  |                                   | (76) |  |                      |  | (115) |                 |  |  | (27)               |  |  |                          | (11) |  |                              |  | 8   |                            |  |  | 3     |  |  |  | (5)  |  |  |  | (223) | 
|Income statement charge               |  |                                   | 44   |  |                      |  | (53)  |                 |  |  | -                  |  |  |                          | -    |  |                              |  | (3) |                            |  |  | (8)   |  |  |  | 20   |  |  |  | -     | 
|Charged to other comprehensive income |  |                                   | 1    |  |                      |  | 133   |                 |  |  | (23)               |  |  |                          | (16) |  |                              |  | -   |                            |  |  | -     |  |  |  | -    |  |  |  | 95    | 
|                                      |  |                                   |      |  |                      |  |       |                
|At 31 December 2016                   |  |                                   | (31) |  |                      |  | (35)  |                 |  |  | (50)               |  |  |                          | (27) |  |                              |  | 5   |                            |  |  | (5)   |  |  |  | 15   |  |  |  | (128) | 
|                                      |  |                                   |      |  |                      |  |       |                
|At 1 January 2015                     |  |                                   | (26) |  |                      |  | (26)  |                 |  |  | (20)               |  |  |                          | -    |  |                              |  | 11  |                            |  |  | (9)   |  |  |  | 11   |  |  |  | (59)  | 
|Income statement charge               |  |                                   | (50) |  |                      |  | 1     |                 |  |  | -                  |  |  |                          | -    |  |                              |  | (3) |                            |  |  | 17    |  |  |  | (16) |  |  |  | (51)  | 
|Charged to other comprehensive income |  |                                   | -    |  |                      |  | (89)  |                 |  |  | (7)                |  |  |                          | (11) |  |                              |  | -   |                            |  |  | -     |  |  |  | -    |  |  |  | (107) | 
|Eliminated on disposal                |  |                                   | -    |  |                      |  | (1)   |                 |  |  | -                  |  |  |                          | -    |  |                              |  | -   |                            |  |  | (5)   |  |  |  | -    |  |  |  | (6)   | 
|At 31 December 2015                   |  |                                   | (76) |  |                      |  | (115) |                 |  |  | (27)               |  |  |                          | (11) |  |                              |  | 8   |                            |  |  | 3     |  |  |  | (5)  |  |  |  | (223) | 





222Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements







|                                      |  |                                   |      |  |                      |  |       |                 |  |  |                    |  |  |                          |      |  |                              |  |   |                            |  |  |       |  |  |  |      |  |  |  |       | 
|------------------------------------- |  | --------------------------------- | ---- |  | -------------------- |  | ----- | --------------- |  |  | ------------------ |  |  | ------------------------ | ---- |  | ---------------------------- |  | - | -------------------------- |  |  | ----- |  |  |  | ---- |  |  |  | ----- | 
|                                      |  | Company                           |     
|                                      |  | Fair valueof financialinstruments |      |  | Pensionremeasurement |  |       | Cash flowhedges |  |  | Available-for-sale |  |  | Tax lossescarriedforward |      |  | Accelerated
tax depreciation |  |   | Other
temporarydifferences |  |  | Total | 
|                                      |  | £m                                |      |  | £m                   |  |       | £m              |  |  | £m                 |  |  | £m                       |      |  | £m                           |  |   | £m                         |  |  | £m    | 
|At 1 January 2016                     |  |                                   | (77) |  |                      |  | (113) |                 |  |  | 1                  |  |  |                          | (11) |  |                              |  | - |                            |  |  | 17    |  |  |  | 7    |  |  |  | (176) | 
|Income statement charge               |  |                                   | 40   |  |                      |  | (53)  |                 |  |  | -                  |  |  |                          | -    |  |                              |  | - |                            |  |  | (11)  |  |  |  | 16   |  |  |  | (8)   | 
|Charged to other comprehensive income |  |                                   | -    |  |                      |  | 134   |                 |  |  | (8)                |  |  |                          | (12) |  |                              |  | - |                            |  |  | -     |  |  |  | -    |  |  |  | 114   | 
|At 31 December 2016                   |  |                                   | (37) |  |                      |  | (32)  |                 |  |  | (7)                |  |  |                          | (23) |  |                              |  | - |                            |  |  | 6     |  |  |  | 23   |  |  |  | (70)  | 
|                                      |  |                                   |      |  |                      |  |       |                 |  |  |                    |  |  |                          |      |  |                              |  |   |                            |  |  |       |  |  |  |      |  |  |  |       | 
|At 1 January 2015                     |  |                                   | (39) |  |                      |  | (25)  |                 |  |  | -                  |  |  |                          | -    |  |                              |  | - |                            |  |  | 10    |  |  |  | 28   |  |  |  | (26)  | 
|Income statement charge               |  |                                   | (38) |  |                      |  | 1     |                 |  |  | -                  |  |  |                          | -    |  |                              |  | - |                            |  |  | 7     |  |  |  | (21) |  |  |  | (51)  | 
|Charged to other comprehensive income |  |                                   | -    |  |                      |  | (89)  |                 |  |  | 1                  |  |  |                          | (11) |  |                              |  | - |                            |  |  | -     |  |  |  | -    |  |  |  | (99)  | 
|At 31 December 2015                   |  |                                   | (77) |  |                      |  | (113) |                 |  |  | 1                  |  |  |                          | (11) |  |                              |  | - |                            |  |  | 17    |  |  |  | 7    |  |  |  | (176) | 

The deferred tax assets/(liabilities) scheduled above have been recognised in both Santander UK plc and the Santander UK group on the
basis that sufficient future taxable profits are forecast within the foreseeable future, in excess of the profits arising from the reversal of existing taxable temporary differences, to allow for the utilisation of the assets as they reverse. Based
on the conditions at the balance sheet date, management determined that a reasonably possible change in any of the key assumptions underlying the estimated future taxable profits in the Santander UK groups five-year plan (described in Note 22)
would not cause a reduction in the deferred tax assets recognised.

At 31 December 2016, the Santander UK group and a trading subsidiary Santander Lending
Limited recognised a deferred tax asset of £5m (2015: £8m) in respect of prior year trading losses. Future profit forecasts are such that recognition criteria under IAS 12 have been met. These tax losses do not time expire.

At 31 December 2016, the Santander UK group has recognised UK capital losses carried forward of £nil (2015: £50m). There are no unrecognised capital
losses carried forward (2015: £nil).

In addition, the Santander UK group has net operating losses carried forward in the US of $80m (2015: $80m). The deferred
tax asset has not been recognised as the Santander UK group does not currently anticipate being able to offset the losses against future profits or gains in order to realise any economic benefit in the foreseeable future.

25. OTHER ASSETS



|                            |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|--------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                            |  | Group   |       |  | Company | 
|                            |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Trade and other receivables |  |         | 1,261 |  |         |  | 1,261 |         |  |  | 1,210   |  |  |  | 1,079 | 
|Prepayments                 |  |         | 140   |  |         |  | 87    |         |  |  | 71      |  |  |  | 57    | 
|Accrued income              |  |         | 72    |  |         |  | 27    |         |  |  | 21      |  |  |  | 23    | 
|                            |  |         | 1,473 |  |         |  | 1,375 |         |  |  | 1,302   |  |  |  | 1,159 | 

Included in the above balances are amounts due from Banco Santander SA and other subsidiaries of Banco Santander SA outside the Santander
UK group of £5m (2015: £4m) and £12m (2015: £11m) respectively.

26. DEPOSITS BY BANKS



|                                                                |  |         |       |  |         |  |       |         |  |  |         |  |  |  |        | 
|--------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ------ | 
|                                                                |  | Group   |       |  | Company | 
|                                                                |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Items in the course of transmission                             |  |         | 308   |  |         |  | 326   |         |  |  | 302     |  |  |  | 323    | 
|Deposits by banks - securities sold under repurchase agreements |  |         | 2,384 |  |         |  | 3,900 |         |  |  | 1,706   |  |  |  | 1,564  | 
|Amounts due to Santander UK subsidiaries                        |  |         | -     |  |         |  | -     |         |  |  | 12,269  |  |  |  | 23,897 | 
|Amounts due to Banco Santander SA:                              |  |         |       |  |         |  |       |         |  |  |         |  |  |  |        | 
|- securities sold under repurchase agreements                   |  |         | -     |  |         |  | 309   |         |  |  | -       |  |  |  | -      | 
|- other                                                         |  |         | 24    |  |         |  | 1,014 |         |  |  | 24      |  |  |  | 1,003  | 
|Amounts due to fellow Banco Santander subsidiaries:             |  |         |       |  |         |  |       |         |  |  |         |  |  |  |        | 
|- securities sold under repurchase agreements                   |  |         | -     |  |         |  | -     |         |  |  | -       |  |  |  | -      | 
|- other                                                         |  |         | -     |  |         |  | 135   |         |  |  | -       |  |  |  | 135    | 
|Deposits held as collateral                                     |  |         | 755   |  |         |  | 438   |         |  |  | 35      |  |  |  | 45     | 
|Other
deposits(1)                                               |  |         | 6,298 |  |         |  | 2,156 |         |  |  | 5,405   |  |  |  | 1,301  | 
|                                                                |  |         | 9,769 |  |         |  | 8,278 |         |  |  | 19,741  |  |  |  | 28,268 | 

|(1) | Includes drawdown from the TFS of £4,500m (2015: £nil).
|--- | -------------------------------------------------------





Santander UK plc223



---

##### Table of Contents



Annual Report 2016

Financial
statements









|                                               |  |         |       |  |         |  |       |         |  |  |         |  |  |  |        | 
|---------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ------ | 
|                                               |  | Group   |       |  |         |  |       | Company | 
|                                               |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Repayable:                                     |  |         |       |  |         |  |       |         |  |  |         |  |  |  |        | 
|On demand                                      |  |         | 2,366 |  |         |  | 3,331 |         |  |  | 1,725   |  |  |  | 7,172  | 
|In not more than 3 months                      |  |         | 909   |  |         |  | 1,258 |         |  |  | 11,488  |  |  |  | 7,216  | 
|In more than 3 months but not more than 1 year |  |         | 650   |  |         |  | 1,949 |         |  |  | 952     |  |  |  | 4,885  | 
|In more than 1 year but not more than 5 years  |  |         | 5,751 |  |         |  | 1,632 |         |  |  | 5,553   |  |  |  | 7,106  | 
|In more than 5 years                           |  |         | 93    |  |         |  | 108   |         |  |  | 23      |  |  |  | 1,889  | 
|                                               |  |         | 9,769 |  |         |  | 8,278 |         |  |  | 19,741  |  |  |  | 28,268 | 

27. DEPOSITS BY CUSTOMERS



|                                                   |  |         |         |  |         |  |         |         |  |  |         |  |  |  |         | 
|-------------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  |  | ------- | 
|                                                   |  |         |         |  | Group   |  |         |         |  |  | Company | 
|                                                   |  | 2016
£m |         |  | 2015
£m |  |         | 2016
£m |  |  | 2015
£m | 
|Current and demand accounts:                       |  |         |         |  |         |  |         |         |  |  |         |  |  |  |         | 
|- Interest-bearing                                 |  |         | 85,967  |  |         |  | 74,256  |         |  |  | 83,134  |  |  |  | 69,834  | 
|- Non-interest-bearing                             |  |         | 67      |  |         |  | 532     |         |  |  | 67      |  |  |  | 897     | 
|Savings accounts(1)                                |  |         | 58,305  |  |         |  | 59,420  |         |  |  | 57,400  |  |  |  | 56,111  | 
|Time deposits                                      |  |         | 27,203  |  |         |  | 27,959  |         |  |  | 24,623  |  |  |  | 28,941  | 
|Securities sold under repurchase agreements        |  |         | 502     |  |         |  | 502     |         |  |  | 502     |  |  |  | 502     | 
|Amounts due to Santander UK subsidiaries           |  |         | -       |  |         |  | -       |         |  |  | 23,827  |  |  |  | 31,604  | 
|Amounts due to Santander UK Group Holdings
plc(2)  |  |         | 4,464   |  |         |  | 842     |         |  |  | 4,464   |  |  |  | 842     | 
|Amounts due to fellow Banco Santander subsidiaries |  |         | 664     |  |         |  | 563     |         |  |  | 657     |  |  |  | 560     | 
|                                                   |  |         | 177,172 |  |         |  | 164,074 |         |  |  | 194,674 |  |  |  | 189,291 | 
|                                                   |  |         |         | 
|Repayable:                                         |  |         |         |  |         |  |         |         |  |  |         |  |  |  |         | 
|On demand                                          |  |         | 145,810 |  |         |  | 130,680 |         |  |  | 142,234 |  |  |  | 128,093 | 
|In no more than 3 months                           |  |         | 4,944   |  |         |  | 5,670   |         |  |  | 4,790   |  |  |  | 6,205   | 
|In more than 3 months but not more than 1 year     |  |         | 13,272  |  |         |  | 16,392  |         |  |  | 13,144  |  |  |  | 17,038  | 
|In more than 1 year but not more than 5 years      |  |         | 10,851  |  |         |  | 10,810  |         |  |  | 10,081  |  |  |  | 9,514   | 
|In more than 5 years                               |  |         | 2,295   |  |         |  | 522     |         |  |  | 24,425  |  |  |  | 28,441  | 
|                                                   |  |         | 177,172 |  |         |  | 164,074 |         |  |  | 194,674 |  |  |  | 189,291 | 

|(1) | Includes equity index-linked deposits of £1,618m (2015: £2,029m). The capital amount guaranteed/protected and the amount of return guaranteed in respect of the equity index-linked deposits were £1,618m
and £129m (2015: £2,029m and £160m) respectively.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Includes downstreamed funding from our immediate parent company Santander UK Group Holdings plc.
|--- | ------------------------------------------------------------------------------------------------

28. TRADING LIABILITIES



|                                                                             |  |         |        |  |         |  |        | 
|---------------------------------------------------------------------------- |  | ------- | ------ |  | ------- |  | ------ | 
|                                                                             |  | Group   |       
|                                                                             |  | 2016
£m |        |  | 2015
£m | 
|Deposits by banks:            - securities sold
under repurchase agreements  |  |         | 780    |  |         |  | 1,148  | 
|-
other(1)                                                                   |  |         | 3,420  |  |         |  | 1,629  | 
|Deposits by customers:         - securities sold under repurchase
agreements |  |         | 8,018  |  |         |  | 6,510  | 
|-
other(1)                                                                   |  |         | 541    |  |         |  | 641    | 
|Short positions in securities and unsettled trades                           |  |         | 2,801  |  |         |  | 2,794  | 
|                                                                             |  |         | 15,560 |  |         |  | 12,722 | 

|(1) | Comprises cash collateral of £3,535m (2015: £1,559m) and short-term deposits of £426m (2015: £711m).
|--- | ----------------------------------------------------------------------------------------------------

At 31 December 2016 and 2015, the Company had no trading liabilities. Included in the above balances are amounts due to Banco Santander SA of £312m (2015:
£nil) and to fellow subsidiaries of Banco Santander SA of £37m (2015: £126m).

29. FINANCIAL LIABILITIES DESIGNATED AT FAIR
VALUE



|                                                                                           |  |         |       |  |         |  |       |         |  |  |         |  |  |  |   | 
|------------------------------------------------------------------------------------------ |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | - | 
|                                                                                           |  | Group   |       |  |         |  |       | Company | 
|                                                                                           |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|US$10bn Euro Commercial Paper Programme                                                    |  |         | 454   |  |         |  | 474   |         |  |  | -       |  |  |  | - | 
|US$30bn Euro Medium Term Note Programme                                                    |  |         | 184   |  |         |  | 223   |         |  |  | 184     |  |  |  | - | 
|Euro 10bn Note Certificate and Warrant Programme and Global Structured Solutions Programme |  |         | 1,137 |  |         |  | 1,184 |         |  |  | -       |  |  |  | - | 
|Warrants programme                                                                         |  |         | 2     |  |         |  | 10    |         |  |  | -       |  |  |  | - | 
|Eurobonds                                                                                  |  |         | 137   |  |         |  | 125   |         |  |  | 137     |  |  |  | - | 
|Structured deposits                                                                        |  |         | 526   |  |         |  | -     |         |  |  | -       |  |  |  | - | 
|                                                                                           |  |         | 2,440 |  |         |  | 2,016 |         |  |  | 321     |  |  |  | - | 





224Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Historically, financial liabilities were designated at fair value through profit or loss where they
would otherwise be measured at amortised cost, and any embedded derivatives or associated derivatives used to economically hedge the risk are held at fair value. Since 2009, the Santander UK groups policy has been not to designate similar new
loans at fair value through profit or loss.

The fair value is based on quoted prices in an active market for the specific instrument concerned, if available. When
quoted market prices are unavailable, the fair value is estimated using valuation techniques, the inputs for which are either based upon quoted prices in an inactive market for the instrument, or are estimated by comparison with quoted prices in an
active market for similar instruments. In both cases, the fair value includes the effect of applying the credit spread which is appropriate to the Santander UK groups liabilities. The change in fair value attributable to the Santander UK
groups own credit spread is computed as follows: for each security at each reporting date, an externally verifiable price is obtained or a price is derived using credit spreads for similar securities for the same issuer or credit default
swaps. Each security is then valued using discounted cash flows, incorporating a LIBOR-based discount curve. The difference in the valuations is attributable to the Santander UK groups own credit spread. This methodology is applied
consistently across all securities where it is believed that counterparties would consider the Santander UK groups creditworthiness when pricing trades.

With
effect on and from 1 June 2016, Santander UK plc was substituted in place of Abbey National Treasury Services plc as principal obligor under the US$30bn Euro Medium Term Note Programme. This substitution was effected pursuant to a deed of
substitution dated 26 April 2016. On and from 1 June 2016, notes issued under the US$30bn Euro Medium Term Note Programme are the sole liability of Santander UK plc and are not guaranteed by any other entity in the Santander UK group.
Santander UK plc also became the issuer for the following standalone securities: the Euro 60m Guaranteed Step-Down Fixed/Inverse Floating Rate Notes due 2019, and the £166,995,000 Zero Coupon Amortising Guaranteed Notes due 2038. These steps
were taken as Santander UK began repositioning the structure of its funding vehicles in preparation for Banking Reform.

Details of the main programmes listed above
are available on our website www.aboutsantander.co.uk.

Included in the above balances are amounts due to Banco Santander SA of £10m (2015: £25m).

Gains and losses arising from changes in the credit spread of securities issued by the Santander UK group reverse over the contractual life of the debt, provided that
the debt is not repaid at a premium or a discount. The net gain during the year attributable to changes in the Santander UK groups own credit risk on the above securities was £6m (2015: net gain of £23m, 2014: net loss of
£1m). The cumulative net gain attributable to changes in the Santander UK groups own credit risk on the above securities at 31 December 2016 was £22m (2015: cumulative net gain of £16m).

At 31 December 2016, the amount that would be required to be contractually paid at maturity of the securities above was £35m lower (2015: £162m higher)
than the carrying value.

30. DEBT SECURITIES IN ISSUE



|                                                           |  |         |        |  |         |  |        |         |  |  |         |  |  |  |   | 
|---------------------------------------------------------- |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------- |  |  |  | - | 
|                                                           |  |         |        |  | Group   |  |        |         |  |  | Company | 
|                                                           |  | 2016
£m |        |  | 2015
£m |  |        | 2016
£m |  |  | 2015
£m | 
|Medium term notes:                                         |  |         |        |  |         |  |        |         |  |  |         |  |  |  |   | 
|- US$30bn Euro Medium Term Note Programme (See Note 29)    |  |         | 10,818 |  |         |  | 11,404 |         |  |  | 10,921  |  |  |  | - | 
|- US SEC-registered  Santander UK plc                     |  |         | 7,499  |  |         |  | -      |         |  |  | 7,578   |  |  |  | - | 
|- US SEC-registered  Abbey National Treasury Services plc |  |         | -      |  |         |  | 5,585  |         |  |  | -       |  |  |  | - | 
|- US$20bn Commercial Paper Programme                       |  |         | 2,678  |  |         |  | 2,270  |         |  |  | -       |  |  |  | - | 
|Euro 35bn Global Covered Bond Programme                    |  |         | 16,628 |  |         |  | 16,040 |         |  |  | 15,997  |  |  |  | - | 
|Certificates of deposit                                    |  |         | 5,217  |  |         |  | 4,473  |         |  |  | -       |  |  |  | - | 
|Securitisation programmes (See Note 16)                    |  |         | 7,506  |  |         |  | 9,843  |         |  |  | -       |  |  |  | - | 
|                                                           |  |         | 50,346 |  |         |  | 49,615 |         |  |  | 34,496  |  |  |  | - | 
|                                                           |  |         |        | 
|Repayable:                                                 |  |         |        |  |         |  |        |         |  |  |         |  |  |  |   | 
|On demand                                                  |  |         | -      |  |         |  | -      |         |  |  | -       |  |  |  | - | 
|In not more than 3 months                                  |  |         | 9,070  |  |         |  | 5,199  |         |  |  | 3,290   |  |  |  | - | 
|In more than 3 months but not more than 1 year             |  |         | 6,553  |  |         |  | 6,282  |         |  |  | 4,074   |  |  |  | - | 
|In more than 1 year but not more than 5 years              |  |         | 20,821 |  |         |  | 18,661 |         |  |  | 20,213  |  |  |  | - | 
|In more than 5 years                                       |  |         | 13,902 |  |         |  | 19,473 |         |  |  | 6,919   |  |  |  | - | 
|                                                           |  |         | 50,346 |  |         |  | 49,615 |         |  |  | 34,496  |  |  |  | - | 

With effect on and from 1 June 2016, Santander UK plc was substituted in place of Abbey National Treasury Services plc as principal
obligor under the Euro 35bn Global Covered Bond Programme, US SEC-registered debt shelf and the US$30bn Euro Medium Term Note Programme. This substitution was effected pursuant to a deed of substitution, novation and amendment dated 26 April
2016. On and from 1 June 2016, the Covered Bonds continue to be guaranteed, in respect of payments of interest and principal, by Abbey Covered Bonds LLP, but are not guaranteed by any other entity in the Santander UK group. On and from
1 June 2016, notes issued under the US$30bn Euro Medium Term Note Programme are the sole liability of Santander UK plc and are not guaranteed by any other entity in the Santander UK group. These steps were taken as Santander UK began
repositioning the structure of its funding vehicles in preparation for Banking Reform.

Details of the main programmes listed above are available on our website
www.aboutsantander.co.uk.

Included in the above balances are amounts due to Banco Santander SA and other subsidiaries of Banco Santander SA outside the Santander UK
group of £36m (2015: £67m) and £162m (2015: £60m) respectively.





Santander UK plc225



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##### Table of Contents



Annual Report 2016

Financial
statements









31. SUBORDINATED LIABILITIES



|                                                                       |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|---------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                                                                       |  | Group   |       |  | Company | 
|                                                                       |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|£325m Sterling Preference Shares                                       |  |         | 344   |  |         |  | 344   |         |  |  | 344     |  |  |  | 344   | 
|£175m Fixed/Floating Rate Tier One Preferred Income Capital Securities |  |         | 2     |  |         |  | 2     |         |  |  | 2       |  |  |  | 2     | 
|Undated subordinated liabilities                                       |  |         | 768   |  |         |  | 809   |         |  |  | 817     |  |  |  | 821   | 
|Dated subordinated liabilities                                         |  |         | 3,189 |  |         |  | 2,730 |         |  |  | 3,248   |  |  |  | 2,784 | 
|                                                                       |  |         | 4,303 |  |         |  | 3,885 |         |  |  | 4,411   |  |  |  | 3,951 | 

The above securities will, in the event of the winding up of the issuer, be subordinated to the claims of depositors and all other
creditors of the issuer, other than creditors whose claims rank equally with, or are junior to, the claims of the holders of the subordinated liabilities. The subordination of specific subordinated liabilities is determined in respect of the issuer
and any guarantors of that liability. The claims of holders of preference shares and preferred securities are generally junior to those of the holders of undated subordinated liabilities, which in turn are junior to the claims of holders of the
dated subordinated liabilities. The subordination of the preference shares and preferred securities ranks equally with that of the £300m fixed/floating rate non-cumulative callable preference shares and £300m Step-up Callable Perpetual
Reserve Capital Instruments classified as other equity instruments, as described in Note 36.

The Santander UK group has not had any defaults of principal, interest
or other breaches with respect to its subordinated liabilities during the year (2015: none). No repayment or purchase by the issuer of the subordinated liabilities may be made prior to their stated maturity without the consent of the PRA.

Included in the above balances are amounts due to Banco Santander SA of £650m (2015: £640m) and to Santander UK Group Holdings plc of £1,222m (2015:
£1,016m).

£325m Sterling Preference Shares

Holders of
sterling preference shares are entitled to receive a bi-annual non-cumulative preferential dividend payable in sterling out of the distributable profits of Santander UK plc at a rate of 8 5/8% per annum of the nominal amount of shares issued in
1997, and an annual rate of 10 3/8% for shares issued in 1995 and 1996.

On a return of capital or on a distribution of assets on a winding up, the sterling
preference shares shall rank pari passu with any other shares that are expressed to rank pari passu therewith as regards participation in assets, and otherwise in priority to any other share capital of Santander UK plc. On such a return of capital
or winding up, each sterling preference share shall, out of the surplus assets of Santander UK plc available for distribution amongst the members after payment of Santander UK plcs liabilities, carry the right to receive an amount equal to the
amount paid up or credited as paid together with any premium paid on issue and the full amount of any dividend otherwise due for payment. Other than as set out above, no sterling preference share confers any right to participate on a return of
capital or a distribution of assets of Santander UK plc.

Holders of the sterling preference shares are not entitled to receive notice of or attend, speak and vote
at general meetings of Santander UK plc unless the business of the meeting includes the consideration of a resolution to wind up Santander UK plc or any resolution varying, altering or abrogating any of the rights, privileges, limitations or
restrictions attached to the sterling preference shares or if the dividend on the sterling preference shares has not been paid in full for the three consecutive dividend periods immediately prior to the relevant general meeting. In any such case,
the sterling preference shareholders are entitled to receive notice of and attend the general meeting at which such resolution is proposed and will be entitled to speak and vote on such a resolution but not on any other resolution.

£175m Fixed/Floating Rate Tier One Preferred Income Capital Securities

The Tier One Preferred Income Capital Securities were issued on 9 August 2002 by Santander UK plc and have no fixed redemption date. Santander UK plc has the right
to redeem the Tier One Preferred Income Capital Securities whole but not in part on 9 February 2018 or on any coupon payment date thereafter, subject to the prior approval of the PRA. The Tier One Preferred Income Capital Securities bear
interest at a rate of 6.984% per annum, payable semi-annually in arrears. From (and including) 9 February 2018, the Tier One Preferred Income Capital Securities will bear interest, at a rate reset semi-annually of 1.86% per annum
above the six-month sterling LIBOR rate, payable semi-annually in arrears. Interest payments may be deferred in limited circumstances, such as when the payment would cause Santander UK plc to become insolvent or breach applicable Capital
Regulations.

The Tier One Preferred Income Capital Securities are not redeemable at the option of the holders and the holders do not have any rights against other
Santander UK group companies. Where interest payments have been deferred, Santander UK plc may not declare or pay dividends on or redeem or repurchase any junior securities until it next makes a scheduled payment on the Tier One Preferred Income
Capital Securities and the Reserve Capital Instruments.

The Tier One Preferred Income Capital Securities are unsecured securities of Santander UK plc and are
subordinated to the claims of unsubordinated creditors and subordinated creditors holding loan capital of Santander UK plc. Upon the winding up of Santander UK plc, holders of Tier One Preferred Income Capital Securities will rank pari passu with
the holders of the most senior class or classes of preference shares (if any) of Santander UK plc then in issue and in priority to all other Santander UK plc shareholders.





226Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Undated subordinated liabilities



|                                                             |  |         |     |  |         |  |     |         |  |  |         |  |  |  |     | 
|------------------------------------------------------------ |  | ------- | --- |  | ------- |  | --- | ------- |  |  | ------- |  |  |  | --- | 
|                                                             |  | Group   |     |  | Company | 
|                                                             |  | 2016
£m |     |  | 2015
£m |  |     | 2016
£m |  |  | 2015
£m | 
|10.0625% Exchangeable subordinated capital securities        |  |         | 205 |  |         |  | 205 |         |  |  | 205     |  |  |  | 205 | 
|Fixed/Floating Rate subordinated notes (Yen 5,000m)          |  |         | -   |  |         |  | 29  |         |  |  | -       |  |  |  | 29  | 
|7.375% 20 Year Step-up perpetual callable subordinated notes |  |         | 198 |  |         |  | 205 |         |  |  | 201     |  |  |  | 203 | 
|7.125% 30 Year Step-up perpetual callable subordinated notes |  |         | 365 |  |         |  | 370 |         |  |  | 411     |  |  |  | 384 | 
|                                                             |  |         | 768 |  |         |  | 809 |         |  |  | 817     |  |  |  | 821 | 

The 10.0625% exchangeable subordinated capital securities are exchangeable into fully paid 10.375% non-cumulative non-redeemable sterling
preference shares of £1 each, at the option of Santander UK plc. Exchange may take place on any interest payment date providing that between 30 and 60 days notice has been given to the holders. The holders will receive one new sterling
preference share for each £1 principal amount of capital securities held.

The Fixed/Floating Rate Subordinated notes are redeemable at par, at the option of
Santander UK plc, on 27 December 2016 and each interest payment date (quarterly) thereafter. During 2016, Santander UK plc exercised its options to call these notes and the notes were fully redeemed.

The 7.375% 20 Year Step-up perpetual callable subordinated notes are redeemable at par, at the option of Santander UK plc, on 28 September 2020 and each fifth
anniversary thereafter.

The 7.125% 30 Year Step-up perpetual callable subordinated notes are redeemable at par, at the option of Santander UK plc, on
30 September 2030 and each fifth anniversary thereafter.

In common with other debt securities issued by Santander UK group companies, the undated subordinated
liabilities are redeemable in whole at the option of Santander UK plc, on any interest payment date, in the event of certain tax changes affecting the treatment of payments of interest on the subordinated liabilities in the UK, at their principal
amount together with any accrued interest.

Dated subordinated liabilities



|                                           |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|------------------------------------------ |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                                           |  | Group   |       |  | Company | 
|                                           |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|10.125% Subordinated guaranteed bond 2023  |  |         | 84    |  |         |  | 90    |         |  |  | 84      |  |  |  | 90    | 
|11.50% Subordinated guaranteed bond 2017   |  |         | 58    |  |         |  | 63    |         |  |  | 58      |  |  |  | 63    | 
|7.95% Subordinated notes 2029 (US$1,000m)  |  |         | 307   |  |         |  | 262   |         |  |  | 307     |  |  |  | 262   | 
|6.50% Subordinated notes 2030              |  |         | 40    |  |         |  | 41    |         |  |  | 45      |  |  |  | 42    | 
|8.963% Subordinated notes 2030 (US$1,000m) |  |         | 126   |  |         |  | 107   |         |  |  | 126     |  |  |  | 107   | 
|5.875% Subordinated notes 2031             |  |         | 10    |  |         |  | 10    |         |  |  | 11      |  |  |  | 10    | 
|9.625% Subordinated notes 2023             |  |         | 134   |  |         |  | 139   |         |  |  | 135     |  |  |  | 138   | 
|5% Subordinated notes 2023 (US$1,500m)     |  |         | 1,208 |  |         |  | 1,002 |         |  |  | 1,260   |  |  |  | 1,056 | 
|4.75% Subordinated notes 2025 (US$1,000m)  |  |         | 816   |  |         |  | 678   |         |  |  | 816     |  |  |  | 678   | 
|5.625% Subordinated notes 2045 (US$500m)   |  |         | 406   |  |         |  | 338   |         |  |  | 406     |  |  |  | 338   | 
|                                           |  |         | 3,189 |  |         |  | 2,730 |         |  |  | 3,248   |  |  |  | 2,784 | 

The dated subordinated liabilities are redeemable in whole at the option of Santander UK plc, on any interest payment date, in the event
of certain tax changes affecting the treatment of payments of interest on the subordinated liabilities in the UK, at their principal amount together with any accrued interest.

Each of the subordinated liabilities issued by Santander UK Group Holdings plc has been downstreamed to Santander UK plc by means of Santander UK plc issuing equivalent
subordinated liabilities to Santander UK Group Holdings plc.

Subordinated liabilities are repayable:



|                                             |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|-------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                                             |  | Group   |       |  | Company | 
|                                             |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Less than one year                           |  |         | 58    |  |         |  | -     |         |  |  | 58      |  |  |  | -     | 
|In more than 1 year but no more than 5 years |  |         | -     |  |         |  | 63    |         |  |  | -       |  |  |  | 63    | 
|In more than 5 years                         |  |         | 3,131 |  |         |  | 2,667 |         |  |  | 3,190   |  |  |  | 2,721 | 
|Undated                                      |  |         | 1,114 |  |         |  | 1,155 |         |  |  | 1,163   |  |  |  | 1,167 | 
|                                             |  |         | 4,303 |  |         |  | 3,885 |         |  |  | 4,411   |  |  |  | 3,951 | 





Santander UK plc227



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##### Table of Contents



Annual Report 2016

Financial
statements









32. OTHER LIABILITIES



|                         |  |         |       |  |         |  |       |         |  |  |         |  |  |  |       | 
|------------------------ |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                         |  | Group   |       |  | Company | 
|                         |  | 2016
£m |       |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Trade and other payables |  |         | 1,994 |  |         |  | 1,343 |         |  |  | 1,869   |  |  |  | 1,256 | 
|Accrued expenses         |  |         | 814   |  |         |  | 959   |         |  |  | 621     |  |  |  | 802   | 
|Deferred income          |  |         | 63    |  |         |  | 33    |         |  |  | 14      |  |  |  | 15    | 
|                         |  |         | 2,871 |  |         |  | 2,335 |         |  |  | 2,504   |  |  |  | 2,073 | 

Included in the above balances are amounts due to Banco Santander SA of £nil (2015: £nil), and other subsidiaries of Banco
Santander SA outside the Santander UK group of £3m (2015: £32m) and to Santander UK Group Holdings plc of £276m (2015: £102m) respectively.

33. PROVISIONS



|                         |  |                     |       |  |                          |  |       |                   |  |  |                       |  |  |                    |       |  |          |  |      |          |  |  |       |  |  |  |       | 
|------------------------ |  | ------------------- | ----- |  | ------------------------ |  | ----- | ----------------- |  |  | --------------------- |  |  | ------------------ | ----- |  | -------- |  | ---- | -------- |  |  | ----- |  |  |  | ----- | 
|                         |  |                     |       |  | Group                    | 
|                         |  | Conduct remediation |       |  |                          |  |       |                   |  |  |                       |  |  |                    |      
|                         |  | PPI
£m              |       |  | Wealth and Investment
£m |  |       | Other products
£m |  |  | Regulatory-related
£m |  |  | Vacant property
£m |       |  | Other
£m |  |      | Total
£m | 
|At 1 January 2016        |  |                     | 465   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 93    |  |          |  | 68   |          |  |  | 72    |  |  |  | 870   | 
|Additional provisions    |  |                     | 144   |  |                          |  | -     |                   |  |  | 2                     |  |  |                    | 141   |  |          |  | (6)  |          |  |  | 116   |  |  |  | 397   | 
|Used during the year     |  |                     | (152) |  |                          |  | (124) |                   |  |  | (14)                  |  |  |                    | (138) |  |          |  | (15) |          |  |  | (124) |  |  |  | (567) | 
|At 31 December 2016      |  |                     | 457   |  |                          |  | 22    |                   |  |  | 14                    |  |  |                    | 96    |  |          |  | 47   |          |  |  | 64    |  |  |  | 700   | 
|To be settled:           |  |                     |       |  |                          |  |       |                   |  |  |                       |  |  |                    |       |  |          |  |      |          |  |  |       |  |  |  |       | 
|- Within 12 months       |  |                     | 294   |  |                          |  | 22    |                   |  |  | 4                     |  |  |                    | 96    |  |          |  | 25   |          |  |  | 59    |  |  |  | 500   | 
|- In more than 12 months |  |                     | 163   |  |                          |  | -     |                   |  |  | 10                    |  |  |                    | -     |  |          |  | 22   |          |  |  | 5     |  |  |  | 200   | 
|                         |  |                     | 457   |  |                          |  | 22    |                   |  |  | 14                    |  |  |                    | 96    |  |          |  | 47   |          |  |  | 64    |  |  |  | 700   | 
|                         |  |                     |       |  |                          |  |       |                   |  |  |                       |  |  |                    |       |  |          |  |      |          |  |  |       |  |  |  |       | 
|At 1 January 2015        |  |                     | 129   |  |                          |  | 127   |                   |  |  | 35                    |  |  |                    | 85    |  |          |  | 76   |          |  |  | 39    |  |  |  | 491   | 
|Additional provisions    |  |                     | 450   |  |                          |  | 43    |                   |  |  | 7                     |  |  |                    | 177   |  |          |  | 6    |          |  |  | 79    |  |  |  | 762   | 
|Used during the year     |  |                     | (125) |  |                          |  | (24)  |                   |  |  | (16)                  |  |  |                    | (169) |  |          |  | (14) |          |  |  | (46)  |  |  |  | (394) | 
|Transfers                |  |                     | 11    |  |                          |  | -     |                   |  |  | -                     |  |  |                    | -     |  |          |  | -    |          |  |  | -     |  |  |  | 11    | 
|At 31 December 2015      |  |                     | 465   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 93    |  |          |  | 68   |          |  |  | 72    |  |  |  | 870   | 
|To be settled:           |  |                     |       |  |                          |  |       |                   |  |  |                       |  |  |                    |       |  |          |  |      |          |  |  |       |  |  |  |       | 
|- Within 12 months       |  |                     | 227   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 93    |  |          |  | 22   |          |  |  | 67    |  |  |  | 581   | 
|- In more than 12 months |  |                     | 238   |  |                          |  | -     |                   |  |  | -                     |  |  |                    | -     |  |          |  | 46   |          |  |  | 5     |  |  |  | 289   | 
|                         |  |                     | 465   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 93    |  |          |  | 68   |          |  |  | 72    |  |  |  | 870   | 
|                         |  |                    
|                         |  |                     |       |  | Company                  | 
|                         |  | Conduct remediation |       |  |                          |  |       |                   |  |  |                       |  |  |                    |      
|                         |  | PPI
£m              |       |  | Wealth and Investment
£m |  |       | Other products
£m |  |  | Regulatory-related
£m |  |  | Vacant property
£m |       |  | Other
£m |  |      | Total
£m | 
|At 1 January 2016        |  |                     | 465   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 47    |  |          |  | 67   |          |  |  | 64    |  |  |  | 815   | 
|Additional provisions    |  |                     | 144   |  |                          |  | -     |                   |  |  | 2                     |  |  |                    | 126   |  |          |  | (6)  |          |  |  | 111   |  |  |  | 377   | 
|Used during the year     |  |                     | (152) |  |                          |  | (124) |                   |  |  | (14)                  |  |  |                    | (92)  |  |          |  | (14) |          |  |  | (122) |  |  |  | (518) | 
|At 31 December 2016      |  |                     | 457   |  |                          |  | 22    |                   |  |  | 14                    |  |  |                    | 81    |  |          |  | 47   |          |  |  | 53    |  |  |  | 674   | 
|To be settled:           |  |                     |       |  |                          |  |       |                   |  |  |                       |  |  |                    |       |  |          |  |      |          |  |  |       |  |  |  |       | 
|- Within 12 months       |  |                     | 294   |  |                          |  | 22    |                   |  |  | 4                     |  |  |                    | 81    |  |          |  | 25   |          |  |  | 53    |  |  |  | 479   | 
|- In more than 12 months |  |                     | 163   |  |                          |  | -     |                   |  |  | 10                    |  |  |                    | -     |  |          |  | 22   |          |  |  | -     |  |  |  | 195   | 
|                         |  |                     | 457   |  |                          |  | 22    |                   |  |  | 14                    |  |  |                    | 81    |  |          |  | 47   |          |  |  | 53    |  |  |  | 674   | 
|                         |  |                     |       |  |                          |  |       |                   |  |  |                       |  |  |                    |       |  |          |  |      |          |  |  |       |  |  |  |       | 
|At 1 January 2015        |  |                     | 115   |  |                          |  | 127   |                   |  |  | 35                    |  |  |                    | 53    |  |          |  | 75   |          |  |  | 31    |  |  |  | 436   | 
|Additional provisions    |  |                     | 450   |  |                          |  | 43    |                   |  |  | 7                     |  |  |                    | 134   |  |          |  | 6    |          |  |  | 79    |  |  |  | 719   | 
|Used during the year     |  |                     | (125) |  |                          |  | (24)  |                   |  |  | (16)                  |  |  |                    | (140) |  |          |  | (14) |          |  |  | (46)  |  |  |  | (365) | 
|Transfers                |  |                     | 25    |  |                          |  | -     |                   |  |  | -                     |  |  |                    | -     |  |          |  | -    |          |  |  | -     |  |  |  | 25    | 
|At 31 December 2015      |  |                     | 465   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 47    |  |          |  | 67   |          |  |  | 64    |  |  |  | 815   | 
|To be settled:           |  |                     |       |  |                          |  |       |                   |  |  |                       |  |  |                    |       |  |          |  |      |          |  |  |       |  |  |  |       | 
|- Within 12 months       |  |                     | 227   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 47    |  |          |  | 22   |          |  |  | 64    |  |  |  | 532   | 
|- In more than 12 months |  |                     | 238   |  |                          |  | -     |                   |  |  | -                     |  |  |                    | -     |  |          |  | 45   |          |  |  | -     |  |  |  | 283   | 
|                         |  |                     | 465   |  |                          |  | 146   |                   |  |  | 26                    |  |  |                    | 47    |  |          |  | 67   |          |  |  | 64    |  |  |  | 815   | 





228Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





a) Conduct remediation

The amounts in respect of conduct remediation comprise the estimated cost of making redress payments, including related costs, with respect to the past sales or
administration of products. The provision for conduct remediation represents managements best estimate of the anticipated costs of related customer contact and/or redress, including related costs.

(i) Payment Protection Insurance (PPI)

In August 2010, the FSA (now the FCA)
published a policy statement entitled The assessment and redress of Payment Protection Insurance complaints (the Policy Statement). The Policy Statement contained rules which altered the basis on which regulated firms must consider and
deal with complaints in relation to the sale of PPI and potentially increased the amount of compensation payable to customers whose complaints are upheld.

In
November 2015, the FCA issued a Consultation Paper 15/39 (Rules and guidance on payment protection insurance complaints) which introduces the concept of unfair commission in relation to Plevin for customer redress plus a deadline by which customers
need to make their PPI complaints. On 2 August 2016, the FCA issued Consultation Paper 16/20 (Rules and Guidance on payment protection insurance complaints: Feedback on CP 15/39 and further consultation). The paper outlines the FCAs
proposed approach to PPI in light of the 2014 decision of the Supreme Court in Plevin v Paragon Personal Finance Ltd (Plevin) and also recommends a two-year time bar period starting in June 2017, which is later than proposed in CP 15/39 issued by
the FCA in November 2015. The paper also includes proposals in relation to how redress for Plevin-related claims should be calculated including consideration of how profit share arrangements should be reflected in commission levels. These changes
may impact on the future amounts expected to be paid. The final rules were expected in December 2016; however, the FCA announced that they would be delayed until the first quarter of 2017 due to the feedback received. Santander UK has applied the
principles published in Consultation Paper 16/20 to current assumptions, including the potential impact on the provision in December 2016.

A provision for conduct
remediation has been recognised in respect of the misselling of PPI policies. The provision is calculated based on a number of key assumptions which involve significant management judgement. These are:

|- | Claim volumes  the estimated number of customer complaints received
|- | --------------------------------------------------------------------

|- | Uphold rate  the estimated percentage of complaints that are, or will be, upheld in favour of the customer
|- | -----------------------------------------------------------------------------------------------------------

|- | Average cost of redress  the estimated payment to customers, including compensation for any direct loss plus interest and commissions and profit share earned on the policy.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The assumptions have been based on the following:

|- | Analysis completed of the causes of complaints, and uphold rates, and how these are likely to vary in the future
|- | ----------------------------------------------------------------------------------------------------------------

|- | Actual claims activity registered to date
|- | -----------------------------------------

|- | The level of redress paid to customers, together with a forecast of how this is likely to change over time
|- | ----------------------------------------------------------------------------------------------------------

|- | The impact on complaints levels of proactive customer contact
|- | -------------------------------------------------------------

|- | The effect media coverage and time bar are expected to have on the complaints inflows
|- | -------------------------------------------------------------------------------------

|- | Commission and profit share earned from Insurance providers over the lifetime of the products.
|- | ----------------------------------------------------------------------------------------------

The assumptions are kept
under review, and regularly reassessed and validated against actual customer data, e.g. claims received; uphold rates, the impact of any changes in approach to uphold rates, and any re-evaluation of the estimated population.

The most critical factor in determining the level of provision is the volume of claims. The uphold rate is a reasonably consistent function of the sales process and the
average cost of redress can be predicted reasonably accurately given that management is dealing with a high volume and reasonably homogeneous population. In setting the provision, management estimated the total claims that were likely to be
received. Previous experience has indicated that claims could be received over a number of years.

The table below sets out the key drivers of the provision balance
and forecast assumptions used in calculating the provision, as well as the sensitivity of the provision to changes in the assumptions.



|                                  |  |                                |       |  |                             |   |       |                                                     |  |   |            | 
|--------------------------------- |  | ------------------------------ | ----- |  | --------------------------- | - | ----- | --------------------------------------------------- |  | - | ---------- | 
|                                  |  | Cumulative to
31 December 2016 |       |  | Future expected
(unaudited) |   |       | Sensitivity analysis
Increase/decrease in provision | 
|Inbound complaints(1) (000)      |  |                                | 1,209 |  |                             |   | 1,058 |                                                     |  |   | 25 = £9m   | 
|Outbound contact (000)           |  |                                | 394   |  |                             |   | 15    |                                                     |  |   | 25 = £19m  | 
|Response rate to outbound contact |  |                                | 35%   |  |                             |   | 90%   |                                                     |  |   | 1% = £0.4m | 
|Average uphold rate per claim(2)  |  |                                | 57%   |  |                             |   | 69%   |                                                     |  |   | 1% = £6m   | 
|Average redress per
claim(3)      |  | £                              | 1,692 |  |                             | £ | 535   |                                                     |  | £ | 100 = £73m | 

|(1) | Excludes invalid claims where the complainant has not held a PPI policy.
|--- | ------------------------------------------------------------------------

|(2) | Claims include inbound and responses to outbound contact.
|--- | ---------------------------------------------------------

|(3) | The average redress per claim reduced from the cumulative average value at 31 December 2016 of £1,692 to a future average value of £535 due to the inclusion of Plevin cases in the provision, as well as
a shift in the complaint mix to a greater proportion of storecards, which typically held lower average balances.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

2016 compared to 2015

We made an additional £144m provision charge in the year, which included our best estimate of Plevin related claim costs and a £30m charge for a
specific portfolio under a past business review. With the FCA consultation expected to close in the first quarter of 2017, we have assessed the adequacy of our provision and applied the principles published in the August 2016 FCA consultation paper
to our current assumptions. We will continue to review our provision levels in respect of recent claims experience and once the final FCA guidance is published, and it is possible further PPI-related provision adjustments will be required in future
years.

Monthly utilisation during the year, excluding the impact of past business review activity, was slightly higher than the 2015 average and in line with our
assumptions.





Santander UK plc229



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##### Table of Contents



Annual Report 2016

Financial
statements









2015 compared to 2014

When assessing the adequacy of our provision, we
have applied the November 2015 FCA consultation paper, including the Plevin case, to our current assumptions. This application has resulted in an additional £450m provision charge for the fourth quarter of 2015, which represents our best
estimate of the remaining redress and costs. The additional provision is predicated on the probable two-year deadline by which customers would need to make their PPI complaints and the anticipated increase in claim volumes as a result of the finite
claim period.

Monthly utilisation, excluding pro-active customer contact, during 2015 was £10m per month (including related costs), against an average of
£9m in 2014. While we saw a reduction in PPI redress costs in the first half of the year, we have seen an increase in the third quarter in line with industry trends, with the fourth quarter remaining flat. Although we are comfortable with our
current position, we will continue to review our provision levels in respect of recent claims experiences and the observed impact of the two-year deadline.

(ii)
Wealth and investment

During 2012, the FCA (then known as the FSA) undertook an industry-wide thematic review of the sale of investment products, and
subsequently sales of premium investment funds. The FCAs review included Santander UK, and identified shortcomings in the collection of customer information and risk profile alignment, and concerns about product suitability, fees and charges.
As a result, Santander UK initiated customer contact exercises to provide appropriate redress to customers who had suffered detriment.

A provision has been
recognised in respect of the above sales for redress payments and related costs. The provision is calculated based on a number of factors and assumptions including:

|- | Customer communications  the results of contact with affected customers
|- | ------------------------------------------------------------------------

|- | Acceptance of offers made - acceptances by affected customers and additional losses claimed from some customers
|- | ---------------------------------------------------------------------------------------------------------------

|- | Average redress paid  the estimated payment to customers, including compensation for any direct loss plus interest.
|- | --------------------------------------------------------------------------------------------------------------------

At 31 December 2016, the provision was £22m (2015: £146m).

(iii)
Other products

A provision for conduct remediation has also been recognised in respect of sales or administration of other products. The provision represents
managements best estimate of the anticipated costs of related customer contact and/or redress, including related costs. A number of uncertainties remain as to the eventual costs with respect to conduct remediation in respect of these products
given the inherent difficulties in determining the number of customers involved and the amount of any redress to be provided to them.

b)
Regulatory-related

(i) Financial Services Compensation Scheme (FSCS)

The FSCS is the UKs independent statutory compensation fund for customers of authorised financial services firms and pays compensation if a firm is unable to pay
claims against it. The FSCS is funded by levies on the industry (and recoveries and borrowings where appropriate). The levies raised comprise both management expenses levies and, where necessary, compensation levies on authorised firms.

Each deposit-taking institution contributes towards the management expenses levies in proportion to their share of total protected deposits on 31 December of the
year preceding the scheme year, which runs from 1 April to 31 March. In determining an appropriate accrual in respect of the management expenses levy, certain assumptions have been made, based on information received from the FSCS, and the
Santander UK groups historic share of industry protected deposits.

Following the default of a number of deposit takers since 2008, the FSCS borrowed funds
from HM Treasury to meet the compensation costs for customers of those firms. The interest on the borrowings with HM Treasury, which are approximately £16bn, are now assessed at the higher of 12 month LIBOR plus 111 basis points and the
relevant gilt rate published by the Debt Management Office. A margin of 100bp was applied to the loan balance up to 29 March 2015.

Whilst it is expected that
the substantial majority of the principal will be repaid from funds the FSCS receives from asset sales, surplus cash flow or other recoveries in relation to the assets of the firms that defaulted, to the extent that there remains a shortfall, the
FSCS can recover any shortfall of the principal by levying the deposit-taking sector in instalments. The Santander UK group made capital contributions in August 2013, August 2014 and August 2015.

The FSCS and HM Treasury have agreed that the terms of the repayment of the borrowings will be reviewed every three years in light of market conditions and of the actual
repayment from the estates of failed banks. The ultimate amount of any compensation levies to be charged in future years also depends on a number of factors including the level of protected deposits and the population of deposit-taking participants
and will be determined at a later date.

Dunfermline Building Society was the first deposit taker to be resolved under the Special Resolution Regime which came into
force under the Banking Act 2009. Recoveries were paid to HM Treasury and the FSCS has an obligation to contribute to the costs of the resolution, subject to a statutory cap. The Santander UK groups contributions in 2015 and 2016 included
payments for this resolution.

For the year ended 31 December 2016, the Santander UK group charged £34m (2015: £76m, 2014: £91m) to the income
statement in respect of the costs of the FSCS. The charge includes the effect of adjustments to provisions made in prior years as a result of more accurate information now being available.





230Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





(ii) UK Bank Levy

The Finance Act 2011 introduced an annual bank levy in the UK. The UK Bank Levy is based on the total chargeable equity and liabilities as reported in the balance sheet
of a Relevant Group at the end of a chargeable period. The Relevant Group for this purpose is a Foreign Banking Group whose ultimate parent is Banco Santander SA. The UK Bank Levy is calculated principally on the consolidated balance sheet of the UK
sub-group parented by Santander UK Group Holdings plc, of which this Company is part. In determining the chargeable equity and liabilities the following amounts are excluded: adjusted Tier 1 capital; certain protected deposits (for
example those protected under the FSCS); liabilities that arise from certain insurance business within banking groups; liabilities in respect of currency notes in circulation; FSCS liabilities; liabilities representing segregated client money; and
deferred tax liabilities, current tax liabilities, liabilities in respect of the UK Bank Levy, revaluation of property liabilities, liabilities representing the revaluation of business premises and defined benefit retirement liabilities.

It is also permitted in specified circumstances to reduce certain liabilities: by netting them against certain assets; offsetting assets on the relevant balance sheets
that would qualify as high quality liquid assets (in accordance with the PRA definition); and repo liabilities secured against sovereign and supranational debt.

In
addition to changes in corporation tax rates, Finance (No.2) Act 2015 reduced the UK Bank Levy rate from 0.21% to 0.18% from 1 January 2016. As a result a rate of 0.18% applied for 2016 (2015: blended rate of 0.1967%). Certain liabilities are
subject to only a half rate, namely any deposits not otherwise excluded, (except for those from financial institutions and financial traders) and liabilities with a maturity greater than one year at the balance sheet date. The UK Bank Levy is not
charged on the first £20bn of chargeable equity and liabilities. Finance (No.2) Act 2015 also introduced subsequent annual reductions to 0.1% from 1 January 2021.

The cost of the UK Bank Levy for 2016 was £107m (2015: £101m, 2014: £74m). The Santander UK group paid £101m in 2016 (2015: £87m) and
provided for a liability of £60m at 31 December 2016 (2015: £54m).

c) Vacant property

Vacant property provisions are made by reference to an estimate of any expected sub-let income, compared to the head rent, and the possibility of disposing of Santander
UKs interest in the lease, taking into account conditions in the property market. These provisions are reassessed on a semi-annual basis and will normally run off over the period of the leases concerned, where a property is disposed of earlier
than anticipated any remaining balance in the provision relating to that property is released.

d) Other

Other provisions principally comprise amounts in respect of operational loss provisions, restructuring charges and litigation and related expenses.





Santander UK plc231



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##### Table of Contents



Annual Report 2016

Financial
statements









34. RETIREMENT BENEFIT PLANS

The amounts recognised in
the balance sheet were as follows:



|                                                |  |         |       |  |         |  |      |         |  |  |         |  |  |  |      | 
|----------------------------------------------- |  | ------- | ----- |  | ------- |  | ---- | ------- |  |  | ------- |  |  |  | ---- | 
|                                                |  | Group   |       |  | Company | 
|                                                |  | 2016
£m |       |  | 2015
£m |  |      | 2016
£m |  |  | 2015
£m | 
|Assets/(liabilities)                            |  |         |       |  |         |  |      |         |  |  |         |  |  |  |      | 
|Funded defined benefit pension scheme  surplus |  |         | 398   |  |         |  | 556  |         |  |  | 384     |  |  |  | 537  | 
|Funded defined benefit pension scheme  deficit |  |         | (223) |  |         |  | (73) |         |  |  | (223)   |  |  |  | (73) | 
|Unfunded defined benefit pension scheme         |  |         | (39)  |  |         |  | (37) |         |  |  | (39)    |  |  |  | (37) | 
|Total net assets                                |  |         | 136   |  |         |  | 446  |         |  |  | 122     |  |  |  | 427  | 

Remeasurement (gains)/losses recognised in other comprehensive income during the year were as follows:



|                      |  |         |     |  |         |  |       |         |  |  |       | 
|--------------------- |  | ------- | --- |  | ------- |  | ----- | ------- |  |  | ----- | 
|                      |  |         |     |  |         |  |       | Group   | 
|                      |  | 2016
£m |     |  | 2015
£m |  |       | 2014
£m | 
|Pension remeasurement |  |         | 528 |  |         |  | (319) |         |  |  | (132) | 

a) Defined contribution pension plans

The Santander UK group operates a number of defined contribution pension plans. The assets of the defined contribution pension plans are held and administered separately
from those of the Santander UK group. The Santander Retirement Plan, an occupational defined contribution plan, is the plan into which eligible employees are enrolled automatically. The assets of the Santander Retirement Plan are held in separate
trustee-administered funds.

An expense of £52m (2015: £50m, 2014: £52m) was recognised for defined contribution plans in the year, and is included
in staff costs classified within operating expenses in the Income Statement. None of this amount was recognised in respect of key management personnel for the years ended 31 December 2016, 2015 and 2014.

b) Defined benefit pension schemes

The Santander UK
group operates a number of defined benefit pension schemes. The main pension scheme is the Santander (UK) Group Pension Scheme. It comprises seven legally segregated sections under the terms of a merger of former schemes operated by Santander UK plc
agreed in 2012. The scheme covers 18% (2015: 19%) of the Santander UK groups employees, and is a closed funded defined benefit scheme. Under the projected unit method, the current service cost when expressed as a percentage of pensionable
salaries will gradually increase over time.

The corporate trustee of the Santander (UK) Group Pension Scheme is Santander (UK) Group Pension Scheme Trustee Limited,
a private limited company incorporated in 1996 and a wholly-owned subsidiary of Santander UK plc. The principal duty of the trustees is to act in the best interests of the members of the schemes. The Trustee board comprises seven Directors selected
by Santander UK plc, plus seven member-nominated Directors selected from eligible members who apply for the role.

Formal actuarial valuation of the assets and
liabilities of the defined benefit schemes are carried out on at least a triennial basis by independent professionally-qualified actuaries and valued for accounting purposes at each balance sheet date. The latest formal actuarial valuation for the
Santander (UK) Group Pension scheme at 31 March 2013 was finalised in June 2014. The latest triennial funding valuation commenced as at 31 March 2016.

The
assets of the Scheme are held independently of the Santander UK groups assets in separate trustee administered funds. Investment strategy across the Scheme remains under regular review. Investment decisions are delegated by the Santander (UK)
Group Pension Scheme Trustees to a common investment fund, managed by Santander (CF) Trustee Limited, a private limited company owned by six Trustee directors, three appointed by Santander UK plc and three by Santander (UK) Group Pension Trustee
Limited. The Trustee directors principal duty, within the investment powers delegated to them is to act in the best interest of the members of the Santander (UK) Group Pension Scheme. Ultimate responsibility for investment strategy rests with
the Trustee of the Scheme who are required under the Pensions Act 2004 to prepare a statement of investment principles.

The Trustee of the Santander (UK) Group
Pension Scheme has developed the following investment principles:

|- | To maintain a portfolio of suitable assets of appropriate quality, suitability and liquidity which will generate income and capital growth to meet, together with new contributions from members and the employers, the
cost of current and future benefits which the pension scheme provides, as set out in the trust deed and rules
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | To limit the risk of the assets failing to meet the liabilities, over the long-term and on a shorter-term basis as required by prevailing legislation
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------



|- | To invest in a manner appropriate to the nature and duration of the expected future retirement benefit payments
|- | ---------------------------------------------------------------------------------------------------------------



|- | To minimise the long-term costs of the pension scheme by maximising the return on the assets whilst having regard to the objectives shown above.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------





232Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Key actuarial risks

The Santander UK groups defined benefit pension schemes expose it to actuarial risks such as investment risk, interest rate risk, longevity risk, salary risk and
inflation risk:



|                   |  |                                                                                                                                                                                                                                                                                                                                                  
|------------------ |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Investment risk    |  | The present value of the defined benefit scheme liability is calculated using a discount rate determined by reference to high quality corporate bond yields; if the return on Scheme assets is below this rate, it will create a Scheme
deficit.                                                                                                 
|                   | 
|Interest rate risk |  | A decrease in the reference bond yield will increase the Scheme liability; however this will be partially offset by an increase in the value of the Schemes debt investments.                                                                                                                                                                   
|                   | 
|Longevity risk     |  | The present value of the defined benefit scheme liability is calculated by reference to the best estimate of the life expectancy of scheme participants both during and after their employment. An increase in life expectancy of the
scheme participants will increase the schemes liability as benefits will be paid for longer.              
|                   | 
|Salary risk        |  | The present value of the defined benefit schemes liability is calculated by reference to the future salaries of scheme participants. As such, an increase in the salary of the scheme participants will increase the schemes
liability. This risk has been minimised by the introduction of a salary increase cap of 1% p.a. from 1 March 2015.
|                   | 
|Inflation risk     |  | An increase in inflation rate will increase the Scheme liability as benefits will increase more quickly, accompanied by an expected increase in the return on the schemes investments.                                                                                                                                                          

The Santander UK group does not hold insurance policies over the schemes, and has not entered into any significant transactions with the
schemes.

The total amount charged/(credited) to the income statement, including any amounts classified as redundancy costs and in discontinued operations was as
follows:



|                              |  |         |      |  |         |  |     |         |  |  |       | 
|----------------------------- |  | ------- | ---- |  | ------- |  | --- | ------- |  |  | ----- | 
|                              |  | Group   |     
|                              |  | 2016
£m |      |  | 2015
£m |  |     | 2014
£m | 
|Net interest (income)/expense |  |         | (18) |  |         |  | (4) |         |  |  | 13    | 
|Current service cost          |  |         | 33   |  |         |  | 37  |         |  |  | 34    | 
|Past service cost/(credit)    |  |         | 1    |  |         |  | 2   |         |  |  | (230) | 
|Administration costs          |  |         | 8    |  |         |  | 6   |         |  |  | 7     | 
|                              |  |         | 24   |  |         |  | 41  |         |  |  | (176) | 

In 2014, following a review of the Santander (UK) Group Pension Scheme, pension arrangements for colleagues in that Scheme were amended
through the introduction of a cap on pensionable pay increases by 1% per annum from 1 March 2015. The impact of this change was a reduction in the defined benefit obligation of £230m, partially offset by a one off contribution to the
defined contribution plan for affected member of £10m and implementation costs of £2m. Consequently, a net gain of £218m was recognised in the income statement during the year as set out in Note 6.

The amounts recognised in other comprehensive income during the year were as follows:



|                                                                           |  |         |         |  |         |  |       |         |  |  |         | 
|-------------------------------------------------------------------------- |  | ------- | ------- |  | ------- |  | ----- | ------- |  |  | ------- | 
|                                                                           |  | Group   |        
|                                                                           |  | 2016
£m |         |  | 2015
£m |  |       | 2014
£m | 
|Return on plan assets (excluding amounts included in net interest expense) |  |         | (1,447) |  |         |  | 164   |         |  |  | (1,048) | 
|Actuarial losses/(gains) arising from changes in demographic assumptions   |  |         | 30      |  |         |  | (67)  |         |  |  | 129     | 
|Actuarial (gains)/losses arising from experience adjustments               |  |         | (80)    |  |         |  | (202) |         |  |  | 59      | 
|Actuarial losses/(gains) arising from changes in financial assumptions     |  |         | 2,025   |  |         |  | (211) |         |  |  | 728     | 
|Cumulative actuarial reserve acquired with subsidiary                      |  |         | -       |  |         |  | (3)   |         |  |  | -       | 
|Pension remeasurement                                                      |  |         | 528     |  |         |  | (319) |         |  |  | (132)   | 

Movements in the present value of defined benefit obligations during the year were as follows:



|                                                                           |  |         |          |  |         |  |         |         |  |  |          |  |  |  |         | 
|-------------------------------------------------------------------------- |  | ------- | -------- |  | ------- |  | ------- | ------- |  |  | -------- |  |  |  | ------- | 
|                                                                           |  | Group   |          |  | Company | 
|                                                                           |  | 2016
£m |          |  | 2015
£m |  |         | 2016
£m |  |  | 2015
£m  | 
|Balance at 1 January                                                       |  |         | (9,004)  |  |         |  | (9,314) |         |  |  | (8,953)  |  |  |  | (9,299) | 
|Assumed through business combinations                                      |  |         | -        |  |         |  | (34)    |         |  |  | -        |  |  |  | -       | 
|Current service cost                                                       |  |         | (23)     |  |         |  | (25)    |         |  |  | (23)     |  |  |  | (25)    | 
|Current service cost paid by subsidiaries                                  |  |         | (2)      |  |         |  | (2)     |         |  |  | (2)      |  |  |  | (2)     | 
|Current service cost paid by fellow Banco Santander subsidiaries           |  |         | (8)      |  |         |  | (10)    |         |  |  | (8)      |  |  |  | (9)     | 
|Interest cost                                                              |  |         | (333)    |  |         |  | (338)   |         |  |  | (330)    |  |  |  | (336)   | 
|Employer salary sacrifice contributions                                    |  |         | (7)      |  |         |  | (7)     |         |  |  | (7)      |  |  |  | (7)     | 
|Past service cost                                                          |  |         | (1)      |  |         |  | (2)     |         |  |  | (1)      |  |  |  | (2)     | 
|Remeasurement gains/(losses):                                              |  |         |          |  |         |  |         |         |  |  |          |  |  |  |         | 
|- Actuarial (losses)/gains arising from changes in demographic assumptions |  |         | (30)     |  |         |  | 67      |         |  |  | (30)     |  |  |  | 67      | 
|- Actuarial gains/(losses) arising from experience adjustments             |  |         | 80       |  |         |  | 202     |         |  |  | 80       |  |  |  | 202     | 
|- Actuarial (losses)/gains arising from changes in financial assumptions   |  |         | (2,025)  |  |         |  | 211     |         |  |  | (2,020)  |  |  |  | 211     | 
|Benefits paid                                                              |  |         | 271      |  |         |  | 248     |         |  |  | 269      |  |  |  | 247     | 
|Balance at 31 December                                                     |  |         | (11,082) |  |         |  | (9,004) |         |  |  | (11,025) |  |  |  | (8,953) | 





Santander UK plc233



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##### Table of Contents



Annual Report 2016

Financial
statements









Movements in the fair value of scheme assets during the year were as follows:



|                                                                           |  |         |        |  |         |  |       |         |  |  |         |  |  |  |       | 
|-------------------------------------------------------------------------- |  | ------- | ------ |  | ------- |  | ----- | ------- |  |  | ------- |  |  |  | ----- | 
|                                                                           |  | Group   |        |  | Company | 
|                                                                           |  | 2016
£m |        |  | 2015
£m |  |       | 2016
£m |  |  | 2015
£m | 
|Balance at 1 January                                                       |  |         | 9,450  |  |         |  | 9,430 |         |  |  | 9,380   |  |  |  | 9,411 | 
|Acquired through business combinations                                     |  |         | -      |  |         |  | 47    |         |  |  | -       |  |  |  | -     | 
|Interest income                                                            |  |         | 351    |  |         |  | 342   |         |  |  | 348     |  |  |  | 340   | 
|Contributions paid by employer and scheme members                          |  |         | 236    |  |         |  | 37    |         |  |  | 235     |  |  |  | 35    | 
|Contributions paid by fellow Banco Santander subsidiaries                  |  |         | 13     |  |         |  | 12    |         |  |  | 10      |  |  |  | 11    | 
|Administration costs paid                                                  |  |         | (8)    |  |         |  | (6)   |         |  |  | (8)     |  |  |  | (6)   | 
|Return on plan assets (excluding amounts included in net interest expense) |  |         | 1,447  |  |         |  | (164) |         |  |  | 1,451   |  |  |  | (164) | 
|Benefits paid                                                              |  |         | (271)  |  |         |  | (248) |         |  |  | (269)   |  |  |  | (247) | 
|Balance at 31 December                                                     |  |         | 11,218 |  |         |  | 9,450 |         |  |  | 11,147  |  |  |  | 9,380 | 

Costs of £8m (2015: £6m, 2014: £7m) and £8m (2015: £6m, 2014: £7m) associated with the management of
scheme assets have been deducted from the interest income on plan assets for the Santander UK group and the Company, respectively.

The following tables provide
information on the composition and fair value of the plan assets at 31 December 2016 and 2015.

2016

|                                |  |    |                                 |  |   |  |                                     |         |  |  |       |  |  |    |    |  |   |  |        |  |  |  |     | 
|------------------------------- |  | -- | ------------------------------- |  | - |  | ----------------------------------- | ------- |  |  | ----- |  |  | -- | -- |  | - |  | ------ |  |  |  | --- | 
|                                |  |    |                                 |  |   |  |                                     | Group   | 
|                                |  |    | Quoted prices in active markets |  |   |  | Prices not quoted in active markets |         |  |  | Total |  |  |    |    | 
|Category of plan assets         |  | £m |                                 |  | % |  |                                     | £m      |  |  | %     |  |  | £m |    |  | % | 
|UK equities                     |  |    | 148                             |  |   |  | 1                                   |         |  |  | -     |  |  |    | -  |  |   |  | 148    |  |  |  | 1   | 
|Overseas equities               |  |    | 2,064                           |  |   |  | 19                                  |         |  |  | 597   |  |  |    | 5  |  |   |  | 2,661  |  |  |  | 24  | 
|Corporate bonds                 |  |    | 1,778                           |  |   |  | 16                                  |         |  |  | 162   |  |  |    | 1  |  |   |  | 1,940  |  |  |  | 17  | 
|Government fixed interest bonds |  |    | 226                             |  |   |  | 2                                   |         |  |  | -     |  |  |    | -  |  |   |  | 226    |  |  |  | 2   | 
|Government index-linked bonds   |  |    | 3,294                           |  |   |  | 29                                  |         |  |  | -     |  |  |    | -  |  |   |  | 3,294  |  |  |  | 29  | 
|Property                        |  |    | -                               |  |   |  | -                                   |         |  |  | 1,361 |  |  |    | 12 |  |   |  | 1,361  |  |  |  | 12  | 
|Cash                            |  |    | -                               |  |   |  | -                                   |         |  |  | 197   |  |  |    | 2  |  |   |  | 197    |  |  |  | 2   | 
|Other                           |  |    | -                               |  |   |  | -                                   |         |  |  | 1,391 |  |  |    | 13 |  |   |  | 1,391  |  |  |  | 13  | 
|                                |  |    | 7,510                           |  |   |  | 67                                  |         |  |  | 3,708 |  |  |    | 33 |  |   |  | 11,218 |  |  |  | 100 | 
|2015                            |  |    |                                 |  |   |  |                                     |         |  |  |       |  |  |    |    |  |   |  |        |  |  |  |     | 
|UK equities                     |  |    | 122                             |  |   |  | 1                                   |         |  |  | 6     |  |  |    | -  |  |   |  | 128    |  |  |  | 1   | 
|Overseas equities               |  |    | 1,668                           |  |   |  | 18                                  |         |  |  | 393   |  |  |    | 4  |  |   |  | 2,061  |  |  |  | 22  | 
|Corporate bonds                 |  |    | 2,225                           |  |   |  | 24                                  |         |  |  | 96    |  |  |    | 1  |  |   |  | 2,321  |  |  |  | 25  | 
|Government fixed interest bonds |  |    | 175                             |  |   |  | 2                                   |         |  |  | -     |  |  |    | -  |  |   |  | 175    |  |  |  | 2   | 
|Government index-linked bonds   |  |    | 2,560                           |  |   |  | 27                                  |         |  |  | -     |  |  |    | -  |  |   |  | 2,560  |  |  |  | 27  | 
|Property                        |  |    | -                               |  |   |  | -                                   |         |  |  | 1,402 |  |  |    | 15 |  |   |  | 1,402  |  |  |  | 15  | 
|Cash                            |  |    | -                               |  |   |  | -                                   |         |  |  | 169   |  |  |    | 1  |  |   |  | 169    |  |  |  | 1   | 
|Other                           |  |    | -                               |  |   |  | -                                   |         |  |  | 634   |  |  |    | 7  |  |   |  | 634    |  |  |  | 7   | 
|                                |  |    | 6,750                           |  |   |  | 72                                  |         |  |  | 2,700 |  |  |    | 28 |  |   |  | 9,450  |  |  |  | 100 | 
|2016                            |  |    |                                 |  |   |  |                                     |         |  |  |       |  |  |    |    |  |   |  |        |  |  |  |     | 
|                                |  |    |                                 |  |   |  |                                     | Company | 
|                                |  |    | Quoted prices in activemarkets  |  |   |  | Prices not quoted in active markets |         |  |  | Total |  |  |    |    | 
|Category of plan assets         |  | £m |                                 |  | % |  |                                     | £m      |  |  | %     |  |  | £m |    |  | % | 
|UK equities                     |  |    | 148                             |  |   |  | 1                                   |         |  |  | -     |  |  |    | -  |  |   |  | 148    |  |  |  | 1   | 
|Overseas equities               |  |    | 2,054                           |  |   |  | 19                                  |         |  |  | 597   |  |  |    | 5  |  |   |  | 2,651  |  |  |  | 24  | 
|Corporate bonds                 |  |    | 1,734                           |  |   |  | 16                                  |         |  |  | 162   |  |  |    | 1  |  |   |  | 1,896  |  |  |  | 17  | 
|Government fixed interest bonds |  |    | 226                             |  |   |  | 2                                   |         |  |  | -     |  |  |    | -  |  |   |  | 226    |  |  |  | 2   | 
|Government index-linked bonds   |  |    | 3,294                           |  |   |  | 30                                  |         |  |  | -     |  |  |    | -  |  |   |  | 3,294  |  |  |  | 30  | 
|Property                        |  |    | -                               |  |   |  | -                                   |         |  |  | 1,361 |  |  |    | 12 |  |   |  | 1,361  |  |  |  | 12  | 
|Cash                            |  |    | -                               |  |   |  | -                                   |         |  |  | 197   |  |  |    | 2  |  |   |  | 197    |  |  |  | 2   | 
|Other                           |  |    | -                               |  |   |  | -                                   |         |  |  | 1,374 |  |  |    | 12 |  |   |  | 1,374  |  |  |  | 12  | 
|                                |  |    | 7,456                           |  |   |  | 68                                  |         |  |  | 3,691 |  |  |    | 32 |  |   |  | 11,147 |  |  |  | 100 | 
|2015                            |  |    |                                 |  |   |  |                                     |         |  |  |       |  |  |    |    |  |   |  |        |  |  |  |     | 
|UK equities                     |  |    | 122                             |  |   |  | 1                                   |         |  |  | -     |  |  |    | -  |  |   |  | 122    |  |  |  | 1   | 
|Overseas equities               |  |    | 1,668                           |  |   |  | 18                                  |         |  |  | 380   |  |  |    | 4  |  |   |  | 2,048  |  |  |  | 22  | 
|Corporate bonds                 |  |    | 2,225                           |  |   |  | 24                                  |         |  |  | 52    |  |  |    | 1  |  |   |  | 2,277  |  |  |  | 25  | 
|Government fixed interest bonds |  |    | 175                             |  |   |  | 2                                   |         |  |  | -     |  |  |    | -  |  |   |  | 175    |  |  |  | 2   | 
|Government index-linked bonds   |  |    | 2,560                           |  |   |  | 27                                  |         |  |  | -     |  |  |    | -  |  |   |  | 2,560  |  |  |  | 27  | 
|Property                        |  |    | -                               |  |   |  | -                                   |         |  |  | 1,402 |  |  |    | 15 |  |   |  | 1,402  |  |  |  | 15  | 
|Cash                            |  |    | -                               |  |   |  | -                                   |         |  |  | 168   |  |  |    | 2  |  |   |  | 168    |  |  |  | 2   | 
|Other                           |  |    | -                               |  |   |  | -                                   |         |  |  | 628   |  |  |    | 6  |  |   |  | 628    |  |  |  | 6   | 
|                                |  |    | 6,750                           |  |   |  | 72                                  |         |  |  | 2,630 |  |  |    | 28 |  |   |  | 9,380  |  |  |  | 100 | 

Scheme assets are stated at fair value based upon quoted prices in active markets with the exception of property funds and those
classified under Other. The Other category consists of asset-backed securities, annuities, funds (including private equity funds) and derivatives that are used to protect against exchange rate, equity market, inflation and
interest rate movements. The property funds were valued using market valuations prepared by an independent expert. Of the assets in the Other category, investments in absolute return funds and foreign exchange, equity and interest rate
derivatives were valued by investment managers by reference to market observable data. Private equity funds were valued by reference to their latest published accounts whilst the insured annuities were valued by scheme actuaries based on the
liabilities insured.

The actual gains on scheme assets for the Santander UK group and the Company were £1,798m (2015: £177m, 2014: £1,402m) and
£1,799m (2015: £176m, 2014: £1,401m), respectively.





234Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements



The
Santander UK groups pension schemes did not directly hold any equity securities of the Company or any of its related parties at 31 December 2016 and 2015. The Santander UK groups pension scheme assets do not include any property or
other assets that are occupied or used by the Santander UK group.

The investment policy and performance of the scheme is monitored regularly by Santander UK plc and
the Santander (CF) Trustee to ensure that the risk and return profile of investments meets objectives. Any changes to the investment policy are agreed with the Santander (UK) Group Pension Scheme Trustee and documented in the Statement of Investment
Policy for the Common Investment Fund.

The strategic asset allocation target is an asset mix based on up to 20% quoted equities, at least 50% debt instruments
(including gilts, index-linked gilts, and corporate bonds) and up to 30% property and alternatives. A strategy is in place to manage interest rate and inflation risk relating to the liabilities. At 31 December 2016, the Santander (UK) Group
Pension Scheme held interest rate swaps with a gross notional value of £1,945m (2015: £980m) and inflation swaps with a gross notional value of £1,030m (2015: £1,048m) for the purposes of liability matching.

Funding

In June 2014 in compliance with the Pensions Act 2004, the trustees
and the Santander UK group agreed to a new recovery plan in respect of the Scheme (the Defined Benefit Deficit Repair Plan) and schedule of contributions following the finalisation of the 31 March 2013 actuarial valuation. The funding target
for this actuarial valuation is for the Scheme to have sufficient assets to make payments to members in respect of the accrued benefits as and when they fall due. In accordance with terms of the trustee agreement, the Santander UK group contributed
£199m (2015: £nil) to the Scheme in the year, of which £101m was in respect of agreed deficit repair contributions and £98m was in respect of deficit repair contributions due to the Group Section under the current recovery
plan for four years from 1 April 2017. The agreed schedule of the Santander UK groups remaining contributions to the Scheme comprises contributions of £119m each year from 2017 increasing by 5% to 31 March 2023 plus
contributions recommencing for the Group Section at £28m per annum increasing at 5% from 1 April 2021 to 31 March 2023. However, this will be reviewed as part of the 2016 actuarial valuation which is ongoing.

Actuarial assumptions

The principal actuarial assumptions used for the defined
benefit schemes were as follows:



|                                                                                |        |                   |      |        |       |  |        |       |  |  |      | 
|------------------------------------------------------------------------------- | ------ | ----------------- | ---- | ------ | ----- |  | ------ | ----- |  |  | ---- | 
|                                                                                |        | Group and Company |     
|                                                                                | 2016
% |                   |      | 2015
% |       |  | 2014
% |      
|To determine benefit obligations:                                               |        |                   |      |        |       |  |        |       |  |  |      | 
|- Discount rate for scheme liabilities                                          |        |                   | 2.8  |        |       |  | 3.7    |       |  |  | 3.6  | 
|- General price inflation                                                       |        |                   | 3.1  |        |       |  | 3.0    |       |  |  | 3.0  | 
|- General salary increase                                                       |        |                   | 1.0  |        |       |  | 1.0    |       |  |  | 1.0  | 
|- Expected rate of pension increase                                             |        |                   | 2.9  |        |       |  | 2.8    |       |  |  | 2.8  | 
|                                                                                |        |                   |     
|                                                                                |        | Years             |      |        | Years |  |        | Years | 
|Longevity at 60 for current pensioners, on the valuation date:                  |        |                   |      |        |       |  |        |       |  |  |      | 
|- Males                                                                         |        |                   | 27.8 |        |       |  | 27.7   |       |  |  | 27.9 | 
|- Females                                                                       |        |                   | 30.3 |        |       |  | 30.2   |       |  |  | 30.3 | 
|Longevity at 60 for future pensioners currently aged 40, on the valuation date: |        |                   |      |        |       |  |        |       |  |  |      | 
|- Males                                                                         |        |                   | 30.0 |        |       |  | 29.9   |       |  |  | 30.2 | 
|- Females                                                                       |        |                   | 32.2 |        |       |  | 32.2   |       |  |  | 32.3 | 

The rate used to discount the retirement benefit obligation is based on the annual yield at 31 December of high quality corporate
bonds on that date, adjusted to match the terms of the scheme liabilities. The inflation assumption is set based on the Bank of England projected inflation rates over the duration of scheme liabilities weighted by projected scheme cash flows.

As part of the triennial actuarial valuations an independent analysis of the Santander (UK) Group Pension Schemes actual mortality experience and expected
mortality experience is carried out. Following the March 2013 actuarial valuation review, the Continuous Mortality Investigation Table S1 Light continued to be adopted, but the weighting for probability of death was adjusted. To reflect
experience, the adjustment adopted in 2014 and 2015 was a loading for the probability of death of 116% for male members and 98% for female members (2013: 103% for both male and female members).

Allowance was then made for expected future improvements to life expectancy based on the Continuous Mortality Investigation Table CMI 2013 with a long-term rate of
future improvements to life expectancy of 1.5% for male members and 1.25% for female members. At 31 December 2015 the improvement table was updated to the CMI 2015 table to reflect the latest available data from the CMI. At 31 December
2016 the same mortality assumption has been adopted as at the previous year-end. This will be reviewed following the completion of the 2016 formal actuarial valuation.

The table above shows that a participant retiring at age 60 at 31 December 2016 is assumed to live for, on average, 27.8 years in the case of a male member and 30.3
years in the case of a female member (2015: 27.7 years male and 30.2 years female). In practice, there will be variation between individual members but these assumptions are expected to be appropriate across all participants. It is assumed that
younger members will live longer in retirement than those retiring now. This reflects the expectation that mortality rates will continue to fall over time as medical science and standards of living improve. To illustrate the degree of improvement
assumed the table also shows the life expectancy for members aged 40 now, when they retire in 20 years time at age 60.

IAS 19 requires our methodology for
calculating Scheme liabilities to have a discount rate based on market yields of high quality corporate bonds of suitable duration and currency. There are only a limited number of higher quality Sterling denominated corporate bonds, particularly
those that are longer dated. Therefore, in order to set a suitable discount rate, we need to construct a corporate bond yield curve. There are a number of ways of projecting forward the bond curve beyond the longest dated corporate bond. In the past
we projected the bond curve using a gilt yield curve, ignoring high and low outliers in each duration bucket.

In 2016 we looked at a number of alternatives to
better reflect our estimate of long-dated credit risk in bond yields appropriate for the cash flow liabilities of the Scheme. Following our review, we enhanced the way we set the discount rate. We now consider a number of different data sources and
methods of projecting forward the corporate bond curve. When considering the different models, we project forward the expected cash flows of the Scheme and adopt a single equivalent cash flow weighted discount rate, subject to management judgement.





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At the same time, we also enhanced our approach for setting the inflation assumption. In the past we used the spot inflation rate as implied by the Bank of England
inflation curve, adjusted for an inflation risk premium. To be consistent with our discount rate methodology, we now set the inflation assumption using the expected cash flows of the Scheme and fitting them to an inflation curve to give a weighted
average inflation assumption. We then adjust this by an inflation risk premium. We also adjusted the method of setting the inflation risk premium from a static measure to one based on the nominal level of implied inflation.

The new models were subject to our pensions governance framework and considered by the Board Audit Committee in November 2016. At 31 December 2016 the net
accounting deficit of our funded defined benefit pension scheme was £175m (2015: £483m surplus). These changes to our methodology assumptions reduced the value placed on the liabilities of the Scheme by £510m (net of tax) and had a
39 basis points positive impact on the CET1 capital ratio.

Actuarial assumption sensitivities

The sensitivity analyses below have been determined based on reasonably possible changes of the respective assumptions occurring at the end of the reporting period, while
holding all other assumptions constant.



|                        |  |                                                                                         |  |  |         |  |  |  |       | 
|----------------------- |  | --------------------------------------------------------------------------------------- |  |  | ------- |  |  |  | ----- | 
|                        |  | Increase/(decrease)                                                                     | 
|                        |  | 2016
£m                                                                                 |  |  | 2015
£m | 
|Discount rate           |  | Change in pension obligation at year-end from a 25 bps increase                         |  |  | (593)   |  |  |  | (434) | 
|                        |  | Change in pension cost for the year from a 25 bps increase                              |  |  | (21)    |  |  |  | (16)  | 
|                        |  |                                                                                         | 
|General price inflation |  | Change in pension obligation at year-end from a 25 bps increase                         |  |  | 405     |  |  |  | 278   | 
|                        |  | Change in pension cost for the year from a 25 bps increase                              |  |  | 13      |  |  |  | 10    | 
|                        |  |                                                                                         | 
|General salary increase |  | Change in pension obligation at year-end from a 25 bps increase                         |  |  | n/a     |  |  |  | n/a   | 
|                        |  |                                                                                         | 
|Mortality               |  | Change in pension obligation at year-end from each additional year of longevity assumed |  |  | 369     |  |  |  | 218   | 

The sensitivity analysis presented above may not be representative of the actual change in the defined benefit obligation as it is
unlikely that the change in assumptions would occur in isolation of one another as some of the assumptions may be correlated. Furthermore, in presenting the above sensitivity analyses, the present value of the defined benefit obligation has been
calculated using the projected unit credit method at the end of the reporting period, which is the same as that applied in calculating the defined benefit obligation liability recognised in the balance sheet. There was no change in the methods and
assumptions used in preparing the sensitivity analyses from prior years.

The benefits expected to be paid in each of the next five years, and in the aggregate for
the five years thereafter are:



|                         |  |    |       | 
|------------------------ |  | -- | ----- | 
|Year ending 31 December: |  | £m |      
|2017                     |  |    | 287   | 
|2018                     |  |    | 307   | 
|2019                     |  |    | 327   | 
|2020                     |  |    | 349   | 
|2021                     |  |    | 373   | 
|Five years ending 2026   |  |    | 2,286 | 

The average duration of the defined benefit obligation at 31 December 2016 was 21.0 years (2015: 19.8 years) and comprised:



|                 |  |            |      |  |            |  |      | 
|---------------- |  | ---------- | ---- |  | ---------- |  | ---- | 
|                 |  | 2016
years |      |  | 2015
years | 
|Active members   |  |            | 26.8 |  |            |  | 25.4 | 
|Deferred members |  |            | 25.7 |  |            |  | 24.3 | 
|Retired members  |  |            | 14.6 |  |            |  | 13.7 | 





236Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





35. CONTINGENT LIABILITIES AND COMMITMENTS



|                                                                                                 |  |         |        |  |         |  |        |         |  |  |         |  |  |  |         | 
|------------------------------------------------------------------------------------------------ |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------- |  |  |  | ------- | 
|                                                                                                 |  | Group   |        |  | Company | 
|                                                                                                 |  | 2016
£m |        |  | 2015
£m |  |        | 2016
£m |  |  | 2015
£m | 
|Guarantees given by Santander UK plc to its subsidiaries                                         |  |         | -      |  |         |  | -      |         |  |  | 57,196  |  |  |  | 86,153  | 
|Guarantees given to third parties                                                                |  |         | 1,859  |  |         |  | 1,568  |         |  |  | 1,548   |  |  |  | 1,255   | 
|Formal standby facilities, credit lines and other commitments with original term to maturity of: |  |         |        |  |         |  |        |         |  |  |         |  |  |  |         | 
|- One year or less                                                                               |  |         | 9,462  |  |         |  | 3,606  |         |  |  | 7,462   |  |  |  | 1,376   | 
|- More than one year                                                                             |  |         | 32,154 |  |         |  | 32,147 |         |  |  | 19,010  |  |  |  | 19,690  | 
|                                                                                                 |  |         | 43,475 |  |         |  | 37,321 |         |  |  | 85,216  |  |  |  | 108,474 | 

Where the items set out below can be reliably estimated, they are disclosed in the table above.

Guarantees given by Santander UK plc to its subsidiaries

Santander UK plc has
fully and unconditionally guaranteed the obligations of each of Abbey National Treasury Services plc and Cater Allen Limited, both of which are wholly owned subsidiaries of the Santander UK group that have been or will be incurred before
30 June 2017.

Capital Support Deed

Santander UK plc, Abbey National
Treasury Services plc, and Cater Allen Limited, which are the three PRA-regulated entities within the Santander UK group, are party to a capital support deed dated 23 December 2015 (the Capital Support Deed) with certain other non-regulated
subsidiaries of Santander UK plc and Santander UK Group Holdings plc. The parties to the Capital Support Deed constitute a core UK group as defined in the PRA Rulebook. Persuant to a PRA permission, exposures of each of the three regulated entities
to other members of the core UK group are exempt from large exposure limits that would otherwise apply. The purpose of the Capital Support Deed is to facilitate the prompt transfer of available capital resources from, or repayment of liabilities by,
the non-regulated parties to any of the regulated parties in the event that one of the regulated parties has breached or is at risk of breaching its capital resources requirements or risk concentrations requirements. The core UK group PRA permission
expires on 31 December 2018.

Domestic Liquidity Sub-group (DoLSub)

Santander UK plc, Abbey National Treasury Services plc, and Cater Allen Limited form the DoLSub under the PRAs regulatory liquidity rules. Each member of the DoLSub
is required to support the others by transferring surplus liquidity in times of stress. The same arrangement existed before October 2015 under the Defined Liquidity Group rules of the PRA in place until that date.

Guarantees given to third parties

Guarantees given to third parties consist
primarily of letters of credit, bonds and guarantees granted as part of normal product facilities which are offered to customers.

Formal standby facilities,
credit lines and other commitments

Standby facilities, credit lines and other commitments are also granted as part of normal product facilities which are offered
to customers. Retail facilities comprise undrawn facilities granted on flexible mortgages, bank overdrafts and credit cards. On flexible mortgages, the credit limit is set at the point of granting the loan through property value and affordability
assessments.

Subsequent assessments are made to ensure that the limit remains appropriate considering any change in the security value or the
customers financial circumstances. For unsecured overdraft facilities and credit cards, the facilities are granted based on new business risk assessment and are reviewed more frequently based on internal, as well as, external data. The
delinquency status of the account would result in the withdrawal of the facility. Corporate facilities can comprise standby and revolving facilities which are subject to ongoing compliance with covenants and may require the provision of agreed
security. Failure to comply with these terms can result in the withdrawal of the unutilised facility headroom.

FSCS

As described in Note 33, the Santander UK group participates in the UKs national resolution scheme, the FSCS, and is thus subject to levies to fund the FSCS. In the
event that the FSCS significantly increase the levies to be paid by firms the associated costs to Santander UK group would rise.

Loan representations and
warranties

In connection with the securitisations and covered bond transactions described in Note 16, the Santander UK group entities selling the relevant loans
into the applicable securitisation or covered bond portfolios make representations and warranties with respect to such loans, in each case as of the date of the sale of the loans into the applicable portfolio. These representations and warranties
cover, among other things, the ownership of the loan by the relevant Santander UK group entity, absence of a material breach or default by the relevant borrower under the loan, the loans compliance with applicable laws and absence of material
disputes with respect to the relevant borrower, asset and loan. The specific representations and warranties made by Santander UK group companies which act as sellers of loans in these securitisations and covered bond transactions depend in each case
on the nature of the transaction and the requirements of the transaction structure. In addition, market conditions and credit rating agency requirements may affect the representations and warranties required of the relevant Santander UK group
companies in these transactions.

In the event that there is a material breach of the representations and warranties given by Santander UK plc as seller of loans
under the residential mortgage-backed securitisations or the covered bond transaction included in Note 16, or if such representations and warranties prove to be materially untrue as at the date when they were given (being the sale date of the
relevant mortgage loans), Santander UK plc may be required to repurchase the affected mortgage loans (generally at their outstanding principal balance plus accrued interest). These securitisation and covered bond transactions are collateralised by
prime residential mortgage loans. Santander UK plc is principally a retail prime lender and has no appetite or product offering for any type of sub-prime business. In addition, Santander UK plcs credit policy explicitly prohibits such lending.





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Similarly, under the auto loan securitisations in Note 16, in the event that there is a breach or inaccuracy in respect of a representation or warranty relating to the
loans, the relevant Santander UK group entity who sold the auto loans into the securitisation portfolio, will be required to repurchase such loans from the structure (also at their outstanding principal balance plus accrued interest). In addition to
breaches of representation and warranties, under the auto loan securitisations, the seller may also have a repurchase obligation if certain portfolio limits are breached (which include, amongst other things, limits as to the size of a loan given to
an individual customer, LTV ratio, average term to maturity and average seasoning).

In the case of a repurchase of a loan from the relevant securitisation or
covered bond portfolio, the Santander UK group may bear any subsequent credit loss on such loan. The Santander UK group manages and monitors its securitisation and covered bond activities closely to minimise potential claims.

The outstanding balances under the securitisation and covered bond transactions originated by the Santander UK group are set out in Note 16.

Other legal actions and regulatory matters

The Santander UK group engages in
discussion, and co-operates, with the FCA and other bodies in their supervision of the Santander UK group, including reviews exercised under statutory powers, regarding its interaction with past and present customers and policyholders, both as part
of general thematic work and in relation to specific products and services. The position will be monitored with particular reference to those reviews currently in progress and where it is not yet possible to reliably determine their outcome.

During the ordinary course of business Santander UK is subject to complaints and threatened legal proceedings brought by or on behalf of current or former employees,
customers, investors or other third parties, as well as legal and regulatory reviews, challenges and enforcement actions. All such matters are assessed periodically to determine the likelihood of Santander UK incurring a liability. In those
instances where it is concluded that it is more likely than not that a payment will be made a provision is established based on managements best estimate of the amount required at the balance sheet date. In some cases it will not be possible
to form a view, for example because the facts are unclear or further time is required to fully assess the merits of the case. In these circumstances no provision will be held. However, Santander UK does not currently expect the final outcome of any
such case to have a material adverse effect on its financial position, operations or cash flows.

Consumer credit

Santander UK groups unsecured lending and other consumer credit business is governed by consumer credit law and related regulations. Claims brought by customers in
relation to potential breaches of these requirements could result in costs to the Santander UK group where such potential breaches are not found to be de minimis. It is not possible to provide any meaningful estimate or range of the possible cost.

Taxation

The Santander UK group engages in discussion, and co-operates,
with HM Revenue & Customs in their oversight of the Santander UK groups tax matters. The Santander UK group adopted the UKs Code of Practice on Taxation for Banks in 2010.

Other

On 2 November 2015, Visa Europe Ltd agreed to sell 100% of its
share capital to Visa Inc. The deal closed on 21 June 2016. As a member and shareholder of Visa Europe Ltd, Santander UK received upfront consideration made up of cash and convertible preferred stock. Additional deferred cash consideration is
also payable following the third anniversary of closing. Conversion of the preferred stock into Class A Common Stock of Visa Inc. depends on the outcome of litigation against Visa involving UK & Ireland (UK&I) multilateral
interchange fees (MIFs). Santander UK and certain other UK&I banks have agreed to indemnify Visa Inc. in the event that the preferred stock is insufficient to meet the costs of this litigation. Visa Inc. has recourse to this indemnity once more
than 1bn of losses relating to UK&I MIFs have arisen or once the total value of the preferred stock issued to UK&I banks on closing has been reduced to nil. In valuing the preferred
stock, Santander UK makes adjustments for illiquidity and the potential for changes in conversion. Visa Inc. may have recourse to a general indemnity in place under Visa Europe Operating Regulations for damages not satisfied through the above
mechanism. As part of the sale of subsidiaries, and as is normal in such circumstances, the Santander UK group has given warranties and indemnities to the purchasers.

Obligations under stock borrowing and lending agreements

Obligations under
stock borrowing and lending agreements represent contractual commitments to return stock borrowed. These obligations are offset by a contractual right to receive stock under other contractual agreements. See Note 39.

Other off-balance sheet commitments

The Santander UK group has commitments to
lend at fixed interest rates which expose it to interest rate risk. For further information, see the Risk review.

Operating lease commitments

|                                                           |  |         |     |  |         |  |     |         |  |  |         |  |  |  |     | 
|---------------------------------------------------------- |  | ------- | --- |  | ------- |  | --- | ------- |  |  | ------- |  |  |  | --- | 
|                                                           |  |         |     |  | Group   |  |     | Company | 
|                                                           |  | 2016
£m |     |  | 2015
£m |  |     | 2016
£m |  |  | 2015
£m | 
|Rental commitments under non-cancellable operating leases: |  |         |     |  |         |  |     |         |  |  |         |  |  |  |     | 
|- No later than 1 year                                     |  |         | 82  |  |         |  | 79  |         |  |  | 72      |  |  |  | 68  | 
|- Later than 1 year but no later than 5 years              |  |         | 252 |  |         |  | 272 |         |  |  | 214     |  |  |  | 234 | 
|- Later than 5 years                                       |  |         | 134 |  |         |  | 144 |         |  |  | 102     |  |  |  | 119 | 
|                                                           |  |         | 468 |  |         |  | 495 |         |  |  | 388     |  |  |  | 421 | 

Under the terms of these leases, the Santander UK group has the opportunity to extend its occupation of properties by a minimum of three
years subject to 12 months notice and lease renewal being available from external landlords during the term of the lease. At expiry, the Santander UK group has the option to reacquire the freehold of certain properties.

During 2016, Santander UK group rental expense amounted to £61m (2015: £61m, 2014: £67m) in respect of minimum rentals. There was no sub-lease rental
income, and no contingent rent expense included in this rental expense.





238Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





36. SHARE CAPITAL AND OTHER EQUITY INSTRUMENTS



|                                                                    |  |                   |       |  |         |  |       | 
|------------------------------------------------------------------- |  | ----------------- | ----- |  | ------- |  | ----- | 
|                                                                    |  | Group and Company |      
|                                                                    |  | 2016
£m           |       |  | 2015
£m | 
|Ordinary share capital                                              |  |                   | 3,105 |  |         |  | 3,105 | 
|£300m fixed/floating rate non-cumulative callable preference shares |  |                   | 14    |  |         |  | 14    | 
|£300m Step-up Callable Perpetual Reserve Capital Instruments        |  |                   | 235   |  |         |  | 235   | 
|£300m Step-up Callable Perpetual Preferred Securities               |  |                   | -     |  |         |  | 7     | 
|AT1 securities:                                                     |  |                   |       |  |         |  |       | 
|- £750m Perpetual Capital Securities                                |  |                   | 750   |  |         |  | 750   | 
|- £300m Perpetual Capital Securities                                |  |                   | 300   |  |         |  | 300   | 
|- £500m Perpetual Capital Securities                                |  |                   | 500   |  |         |  | 500   | 
|                                                                    |  |                   | 4,904 |  |         |  | 4,911 | 

a) Share capital



|                                    |  |                               |                |  |                                        |  |       |                                    |  |  |          |  |  |     |      |  |    |  |             |    |  |  |     |  |  |  |       | 
|----------------------------------- |  | ----------------------------- | -------------- |  | -------------------------------------- |  | ----- | ---------------------------------- |  |  | -------- |  |  | --- | ---- |  | -- |  | ----------- | -- |  |  | --- |  |  |  | ----- | 
|                                    |  | Group and Company             |               
|Issued and fully paid share capital |  | Ordinary shares
of £0.10 each |                |  | £300m Preference shares
of £1,000 each |  |       | £325m Preference shares of
£1 each |  |  | Total
£m | 
|                                    |  | No.                           |                |  | £m                                     |  |       | No.                                |  |  | £m       |  |  | No. |      |  | £m |  |             | £m | 
|At 1 January 2016                   |  |                               | 31,051,768,866 |  |                                        |  | 3,105 |                                    |  |  | 13,797   |  |  |     | 14   |  |    |  | 325,000,000 |    |  |  | 325 |  |  |  | 3,444 | 
|Repurchase of preference shares     |  |                               | -              |  |                                        |  | -     |                                    |  |  | (17)     |  |  |     | -    |  |    |  | -           |    |  |  | -   |  |  |  | -     | 
|At 31 December 2016                 |  |                               | 31,051,768,866 |  |                                        |  | 3,105 |                                    |  |  | 13,780   |  |  |     | 14   |  |    |  | 325,000,000 |    |  |  | 325 |  |  |  | 3,444 | 
|                                    |  |                               |                |  |                                        |  |       |                                    |  |  |          |  |  |     |      |  |    |  |             |    |  |  |     |  |  |  |       | 
|At 1 January 2015                   |  |                               | 31,051,768,866 |  |                                        |  | 3,105 |                                    |  |  | 34,933   |  |  |     | 35   |  |    |  | 325,000,000 |    |  |  | 325 |  |  |  | 3,465 | 
|Repurchase of preference shares     |  |                               | -              |  |                                        |  | -     |                                    |  |  | (21,136) |  |  |     | (21) |  |    |  | -           |    |  |  | -   |  |  |  | (21)  | 
|At 31 December 2015                 |  |                               | 31,051,768,866 |  |                                        |  | 3,105 |                                    |  |  | 13,797   |  |  |     | 14   |  |    |  | 325,000,000 |    |  |  | 325 |  |  |  | 3,444 | 



|                             |  |                   |       |  |         |  |       | 
|---------------------------- |  | ----------------- | ----- |  | ------- |  | ----- | 
|                             |  | Group and Company |      
|Share premium                |  | 2016
£m           |       |  | 2015
£m | 
|At 1 January and 31 December |  |                   | 5,620 |  |         |  | 5,620 | 

The Company has one class of ordinary shares which carries no right to fixed income. The Companys £325m sterling preference
shares are classified as Subordinated Liabilities as described in Note 31.

£300m Fixed/Floating Rate Non-Cumulative Callable Preference Shares

The preference shares entitle the holders to a fixed non-cumulative dividend, at the discretion of Santander UK plc, of 6.22% per annum payable annually from
24 May 2010 until 24 May 2019 and quarterly thereafter at a rate of 1.13% per annum above three month sterling LIBOR. The preference shares are redeemable only at the option of Santander UK plc on 24 May 2019 or on each quarterly
dividend payment date thereafter. No such redemption may be made without the consent of the PRA.

b) Other equity instruments

£300m Step-up Callable Perpetual Reserve Capital Instruments

The
£300 m Step-up Callable Perpetual Reserve Capital Instruments were issued in 2001 by Santander UK plc. Reserve Capital Instruments are redeemable by Santander UK plc on 14 February 2026 or on any coupon payment date thereafter, subject to
the prior approval of the PRA and provided that the auditors have reported to the trustee within the previous six months that the solvency condition is met. The Reserve Capital Instruments bear interest at a rate of 7.037% per annum, payable
annually in arrears, from 14 February 2001 to 14 February 2026. Thereafter, the reserve capital instruments will bear interest at a rate, reset every five years, of 3.75% per annum above the gross redemption yield on the UK five-year
benchmark gilt rate. Interest payments may be deferred by Santander UK plc. The Reserve Capital Instruments are not redeemable at the option of the holders and the holders do not have any rights against other Santander UK group companies. Upon the
occurrence of certain tax or regulatory events, the Reserve Capital Instruments may be exchanged, their terms varied, or redeemed. Where interest payments have been deferred, the Company may not declare or pay dividends on or redeem or repurchase
any junior securities until it next makes a scheduled payment on the Reserve Capital Instruments and Tier One Preferred Income Capital Securities. The Reserve Capital Instruments are unsecured securities of Santander UK plc and are subordinated to
the claims of unsubordinated creditors and subordinated creditors holding loan capital of Santander UK plc. Upon the winding up of Santander UK plc, holders of Reserve Capital Instruments will rank pari passu with the holders of the most senior
class(es) of preference shares (if any) of Santander UK plc then in issue and in priority to all other Santander UK plc shareholders. No such redemption may be made without the consent of the PRA.





Santander UK plc239



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##### Table of Contents



Annual Report 2016

Financial
statements









£300m Step-up Callable Perpetual Preferred Securities

The £300m
Step-up Callable Perpetual Preferred Securities are perpetual securities and pay a coupon on 22 March each year. At each payment date, Santander UK plc can decide whether to declare or defer the coupon indefinitely. If a coupon is deferred then
Santander UK plc may not pay a dividend on any share until it next makes a coupon payment (including payment of any deferred coupons). Santander UK plc can be obliged to make payment in the event of winding up. The coupon is 5.827% per annum
until 22 March 2016. Thereafter the coupon steps up to a rate, reset every five years, of 2.13% per annum above the gross redemption yield on a UK Government Treasury Security. The Perpetual Preferred securities are redeemable at the
option of Santander UK plc on 22 March 2016 or on each payment date thereafter. No such redemption may be made without the consent of the PRA. As part of a capital management exercise, the outstanding balance of the Perpetual Preferred
Securities were repurchased on 22 March 2016.

Other equity instruments include AT1 securities issued by the Company in 2014 and 2015. The AT1 securities are
perpetual securities with no fixed maturity and qualify as AT1 instruments under the CRD IV.

The £500m and £300m Perpetual Capital Securities issued in
2014 and the £750m Perpetual Capital Securities issued in 2015 meet the CRD IV AT1 rules and are fully recognised as AT1 capital.

£750m Perpetual
Capital Securities

On 10 June 2015, the Company issued £750m Perpetual Capital Securities, of which 100% was subscribed by the Companys
immediate parent, Santander UK Group Holdings plc. The securities are perpetual and pay a distribution rate on 24 March, June, September and December, commencing from September 2015. At each distribution payment date, the Company can decide
whether to pay the distribution rate, which is non-cumulative, in whole or in part. The distribution rate is 7.375% per annum until 24 June 2022; thereafter, the distribution rate resets every five years to a rate of 5.543% per annum
above the then prevailing 5 year sterling mid swap rate. The Perpetual Capital Securities will be automatically written down should the Common Equity Tier 1 capital ratio of the Santander UK prudential consolidation group as defined in the
PRAs rules fall below 7%. The Perpetual Capital Securities are redeemable at the option of the Company on 24 June 2022 or on any reset date thereafter. No such redemption may be made without the consent of the PRA.

£300m Perpetual Capital Securities

On 2 December 2014, the Company
issued £300m Perpetual Capital Securities to its immediate parent company, Santander UK Group Holdings plc. The securities are perpetual and pay a distribution rate on 24 March, June, September and December, commencing from March 2015. At
each distribution payment date, the Company can decide whether to pay the distribution rate, which is non-cumulative, in whole or in part. The distribution rate is 7.60% per annum until 24 December 2019; thereafter, the distribution rate
resets every five years to a rate 6.066% per annum above the then prevailing 5 year sterling mid swap rate. The Perpetual Capital Securities will be automatically written down and the investors will lose their entire investment in the
securities should the Common Equity Tier 1 capital ratio of the Santander UK prudential consolidation group as defined in the PRAs rules fall below 7%. The Perpetual Capital Securities are redeemable at the option of the Company on
24 December 2019 or on each distribution payment date thereafter. No such redemption may be made without the consent of the PRA. In turn, Santander UK Group Holdings plc issued a similar security. The issuance was 100% subscribed by Banco
Santander SA.

£500m Perpetual Capital Securities

On 24 June
2014, the Company issued £500m Perpetual Capital Securities to its immediate parent company, Santander UK Group Holdings plc. The securities are perpetual and pay a distribution rate on 24 March, June, September and December, commencing
from March 2015. At each distribution payment date, the Company can decide whether to pay the distribution rate, which is non-cumulative, in whole or in part. The distribution rate is 6.475% per annum until 24 June 2019; thereafter, the
distribution rate resets every five years to a rate 4.291% per annum above the then prevailing 5 year sterling mid swap rate. The Perpetual Capital Securities will be automatically written down and the investors will lose their entire
investment in the securities should the Common Equity Tier 1 capital ratio of the Santander UK prudential consolidation group as defined in the PRAs rules fall below 7%. The Perpetual Capital Securities are redeemable at the option of the
Company on 24 June 2019 or on each distribution payment date thereafter. No such redemption may be made without the consent of the PRA. In turn, Santander UK Group Holdings plc issued a similar security. The issuance was 100% subscribed by
Banco Santander SA.

37. NON-CONTROLLING INTERESTS



|                       |  |         |     |  |         |  |     | 
|---------------------- |  | ------- | --- |  | ------- |  | --- | 
|                       |  | 2016
£m |     |  | 2015
£m | 
|PSA Finance UK Limited |  |         | 150 |  |         |  | 135 | 





240Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





38. CASH FLOW STATEMENT

a)
Reconciliation of profit after tax to net cash inflow/(outflow) from operating activities:



|                                                             |  |         |         |  |         |  |         |         |  |  |         |  |  |         |          |  |         |  |          |  |  |  |          | 
|------------------------------------------------------------ |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  | ------- | -------- |  | ------- |  | -------- |  |  |  | -------- | 
|                                                             |  | Group   |         |  |         |  |         | Company | 
|                                                             |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m |  |  | 2016
£m |  |  | 2015
£m |          |  | 2014
£m | 
|Profit for the year                                          |  |         | 1,319   |  |         |  | 964     |         |  |  | 1,110   |  |  |         | 1,171    |  |         |  | 115      |  |  |  | 1,346    | 
|Non-cash items included in profit:                           |  |         |         |  |         |  |         |         |  |  |         |  |  |         |          |  |         |  |          |  |  |  |          | 
|Depreciation and amortisation                                |  |         | 322     |  |         |  | 295     |         |  |  | 482     |  |  |         | 279      |  |         |  | 243      |  |  |  | 437      | 
|Amortisation of premiums/(discounts) on debt securities      |  |         | 29      |  |         |  | 67      |         |  |  | (22)    |  |  |         | 21       |  |         |  | 20       |  |  |  | (22)     | 
|Provisions for other liabilities and charges                 |  |         | 397     |  |         |  | 762     |         |  |  | 416     |  |  |         | 377      |  |         |  | 719      |  |  |  | 379      | 
|Impairment losses                                            |  |         | 132     |  |         |  | 156     |         |  |  | 369     |  |  |         | 93       |  |         |  | 152      |  |  |  | 348      | 
|Corporation tax charge                                       |  |         | 598     |  |         |  | 381     |         |  |  | 289     |  |  |         | 496      |  |         |  | 227      |  |  |  | 302      | 
|Other non-cash items                                         |  |         | (628)   |  |         |  | 151     |         |  |  | (24)    |  |  |         | 250      |  |         |  | 215      |  |  |  | 698      | 
|Pension charge/(credit) for defined benefit pension schemes  |  |         | 26      |  |         |  | 29      |         |  |  | (204)   |  |  |         | 24       |  |         |  | 27       |  |  |  | 24       | 
|                                                             |  |         | 2,195   |  |         |  | 2,805   |         |  |  | 2,416   |  |  |         | 2,711    |  |         |  | 1,718    |  |  |  | 3,512    | 
|Changes in operating assets and liabilities:                 |  |         |         |  |         |  |         |         |  |  |         |  |  |         |          |  |         |  |          |  |  |  |          | 
|Net change in cash and balances held at central banks        |  |         | (30)    |  |         |  | (22)    |         |  |  | (3)     |  |  |         | (30)     |  |         |  | (19)     |  |  |  | (3)      | 
|Net change in trading assets                                 |  |         | (2,049) |  |         |  | (4,237) |         |  |  | (4,989) |  |  |         | -        |  |         |  | -        |  |  |  | -        | 
|Net change in derivative assets                              |  |         | (4,560) |  |         |  | 2,110   |         |  |  | (2,972) |  |  |         | (4,089)  |  |         |  | 109      |  |  |  | (951)    | 
|Net change in financial assets designated at fair value      |  |         | 257     |  |         |  | 480     |         |  |  | (133)   |  |  |         | (25)     |  |         |  | 23       |  |  |  | (82)     | 
|Net change in loans and advances to banks and customers      |  |         | (2,265) |  |         |  | (7,789) |         |  |  | (3,559) |  |  |         | (13,898) |  |         |  | (15,510) |  |  |  | 52,158   | 
|Net change in other assets                                   |  |         | (121)   |  |         |  | (532)   |         |  |  | (6)     |  |  |         | (292)    |  |         |  | (313)    |  |  |  | (293)    | 
|Net change in deposits by banks and customers                |  |         | 14,434  |  |         |  | 9,399   |         |  |  | 6,565   |  |  |         | (2,917)  |  |         |  | 21,405   |  |  |  | (97,772) | 
|Net change in derivative liabilities                         |  |         | 1,595   |  |         |  | (1,224) |         |  |  | 3,869   |  |  |         | 412      |  |         |  | 874      |  |  |  | 351      | 
|Net change in trading liabilities                            |  |         | 2,837   |  |         |  | (2,606) |         |  |  | (5,942) |  |  |         | -        |  |         |  | -        |  |  |  | -        | 
|Net change in financial liabilities designated at fair value |  |         | 336     |  |         |  | 27      |         |  |  | 240     |  |  |         | (31)     |  |         |  | -        |  |  |  | -        | 
|Net change in debt securities in issue                       |  |         | 409     |  |         |  | (1,166) |         |  |  | 310     |  |  |         | 324      |  |         |  | -        |  |  |  | -        | 
|Net change in other liabilities                              |  |         | 1,589   |  |         |  | (138)   |         |  |  | (567)   |  |  |         | (391)    |  |         |  | (196)    |  |  |  | (1,020)  | 
|Effects of exchange rate differences                         |  |         | 3,885   |  |         |  | (585)   |         |  |  | (613)   |  |  |         | 1,540    |  |         |  | (104)    |  |  |  | 66       | 
|Net cash flows from operating activities before tax          |  |         | 18,512  |  |         |  | (3,478) |         |  |  | (5,384) |  |  |         | (16,686) |  |         |  | 7,987    |  |  |  | (44,034) | 
|Corporation tax paid                                         |  |         | (507)   |  |         |  | (419)   |         |  |  | (149)   |  |  |         | (393)    |  |         |  | (132)    |  |  |  | (59)     | 
|Net cash flows from operating activities                     |  |         | 18,005  |  |         |  | (3,897) |         |  |  | (5,533) |  |  |         | (17,079) |  |         |  | 7,855    |  |  |  | (44,093) | 

b) Analysis of cash and cash equivalents in the balance sheet



|                                       |  |         |        |  |         |  |        |         |  |  |         |  |  |  |        | 
|-------------------------------------- |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------- |  |  |  | ------ | 
|                                       |  |         |        |  | Group   |  |        |         |  |  | Company | 
|                                       |  | 2016
£m |        |  | 2015
£m |  |        | 2016
£m |  |  | 2015
£m | 
|Cash and balances at central banks     |  |         | 17,107 |  |         |  | 16,842 |         |  |  | 13,591  |  |  |  | 14,562 | 
|Less: regulatory minimum cash balances |  |         | (370)  |  |         |  | (340)  |         |  |  | (330)   |  |  |  | (300)  | 
|                                       |  |         | 16,737 |  |         |  | 16,502 |         |  |  | 13,261  |  |  |  | 14,262 | 
|Net trading other cash equivalents     |  |         | 6,537  |  |         |  | 2,068  |         |  |  | -       |  |  |  | -      | 
|Net non-trading other cash equivalents |  |         | 2,431  |  |         |  | 1,781  |         |  |  | 21,083  |  |  |  | 13,691 | 
|Cash and cash equivalents              |  |         | 25,705 |  |         |  | 20,351 |         |  |  | 34,344  |  |  |  | 27,953 | 

c) Acquisition of subsidiaries

Consideration paid in connection with the acquisition of PSA Finance UK Limited in 2015 (see Note 21) was satisfied by cash and cash equivalents.

d) Sale of subsidiaries, associated undertakings and businesses, and discontinued operations

In 2016, the Santander UK group sold a number of subsidiaries for a cash consideration of £149m. The net assets disposed of consisted of other assets and other
liabilities of £138m.





Santander UK plc241



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Annual Report 2016

Financial
statements









39. ASSETS CHARGED AS SECURITY FOR LIABILITIES AND COLLATERAL ACCEPTED AS SECURITY FOR ASSETS

The following transactions are conducted under terms that are usual and customary to collateralised transactions, including, where relevant, standard securities lending
and repurchase agreements.

a) Assets charged as security for liabilities

The financial assets below are analysed between those assets accounted for on-balance sheet and off-balance sheet in accordance with IFRS.



|                                                                                  |  |         |        |  |         |  |        |         |  |  |         |  |  |  |       | 
|--------------------------------------------------------------------------------- |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------- |  |  |  | ----- | 
|                                                                                  |  | Group   |        |  |         |  |        | Company | 
|                                                                                  |  | 2016
£m |        |  | 2015
£m |  |        | 2016
£m |  |  | 2015
£m | 
|On-balance sheet:                                                                 |  |         |        |  |         |  |        |         |  |  |         |  |  |  |       | 
|Treasury bills and other eligible securities                                      |  |         | 6,491  |  |         |  | 5,224  |         |  |  | 5,343   |  |  |  | -     | 
|Cash                                                                              |  |         | 4,123  |  |         |  | 3,554  |         |  |  | 736     |  |  |  | 98    | 
|Loans and advances to customers - securitisations and covered bonds (See Note 16) |  |         | 40,230 |  |         |  | 47,501 |         |  |  | -       |  |  |  | -     | 
|Loans and advances to customers                                                   |  |         | 10,601 |  |         |  | 4,348  |         |  |  | 9,976   |  |  |  | 2,834 | 
|Debt securities                                                                   |  |         | 755    |  |         |  | 1,169  |         |  |  | -       |  |  |  | 271   | 
|Equity securities                                                                 |  |         | 5,637  |  |         |  | 6,178  |         |  |  | -       |  |  |  | -     | 
|                                                                                  |  |         | 67,837 |  |         |  | 67,974 |         |  |  | 16,055  |  |  |  | 3,203 | 
|Off-balance sheet:                                                                |  |         |        |  |         |  |        |         |  |  |         |  |  |  |       | 
|Treasury bills and other eligible securities                                      |  |         | 15,013 |  |         |  | 9,871  |         |  |  | -       |  |  |  | 2,167 | 
|Debt securities                                                                   |  |         | 331    |  |         |  | 373    |         |  |  | 2,984   |  |  |  | 5,545 | 
|Equity securities                                                                 |  |         | 1,557  |  |         |  | 709    |         |  |  | -       |  |  |  | -     | 
|                                                                                  |  |         | 16,901 |  |         |  | 10,953 |         |  |  | 2,984   |  |  |  | 7,712 | 

The Santander UK group provides assets as collateral in the following areas of the business.

Sale and repurchase agreements

Subsidiaries of the Company enter into sale and
repurchase agreements and similar transactions of equity and debt securities, which are accounted for as secured borrowings. Upon entering into such transactions, the subsidiaries provide collateral equal to 100%-131% of the borrowed amount. The
carrying amount of assets that were so provided at 31 December 2016 was £17,359m (2015: £13,868m), of which £4,949m (2015: £6,543m) were classified within loans and advances to customers  securitisations and
covered bonds in the table above.

Securitisations and covered bonds

As described in Note 16, Santander UK plc and certain of its subsidiaries enter into securitisation transactions whereby portfolios of residential mortgage loans and
other loans are purchased by or assigned to structured securitisation companies, and have been funded through the issue of mortgage-backed securities and other asset-backed securities. Holders of the securities are only entitled to obtain payments
of principal and interest to the extent that the resources of the securitisation companies are sufficient to support such payments and the holders of the securities have agreed in writing not to seek recourse in any other form. At 31 December
2016, £363m (2015: £947m) of loans were so assigned by the Santander UK group.

Santander UK plc also has a covered bond programme, whereby securities
are issued to investors and are secured by a pool of residential mortgages. At 31 December 2016, the pool of residential mortgages for the covered bond programme was £20,263m (2015: £23,613m).

At 31 December 2016, total notes issued externally from secured programmes (securitisations and covered bonds) decreased to £24,134m (2015: £25,885m),
including gross issuance of £2,771m (2015: £3,068m) and redemptions of £6,844m (2015: £9,840m). At 31 December 2016, a total of £4,998m (2015: £11,110m) of notes issued under securitisation and covered bond
programmes had also been retained internally, a proportion of which had been used as collateral for raising funds via third party bilateral secured funding transactions, which totalled £2,764m at 31 December 2016 (2015: £5,393m), or
for creating collateral which could in the future be used for liquidity purposes.

Stock borrowing and lending agreements

Asset balances under stock borrowing and lending agreements represent stock lent by the Santander UK group. These balances amounted to £27,975m at 31 December
2016 (2015: £20,547m) and are offset by contractual commitments to return stock borrowed or cash received.

Derivatives business

In addition to the arrangements described above, collateral is also provided in the normal course of derivative business to counterparties. At 31 December 2016,
£3,523m (2015: £3,554m) of such collateral in the form of cash had been provided by the Santander UK group and is included in the table above.





242Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





b) Collateral accepted as security for assets

The
collateral held as security for assets below are analysed between those liabilities accounted for on the balance sheet and off-balance sheet in accordance with IFRS.



|                    |  |         |        |  |         |  |        |         |  |  |         |  |  |  |       | 
|------------------- |  | ------- | ------ |  | ------- |  | ------ | ------- |  |  | ------- |  |  |  | ----- | 
|                    |  | Group   |        |  |         |  |        | Company | 
|                    |  | 2016
£m |        |  | 2015
£m |  |        | 2016
£m |  |  | 2015
£m | 
|On-balance sheet:   |  |         |        |  |         |  |        |         |  |  |         |  |  |  |       | 
|Trading liabilities |  |         | 3,535  |  |         |  | 1,559  |         |  |  | -       |  |  |  | -     | 
|Deposits by banks   |  |         | 785    |  |         |  | 1,443  |         |  |  | 58      |  |  |  | 1,047 | 
|                    |  |         | 4,320  |  |         |  | 3,002  |         |  |  | 58      |  |  |  | 1,047 | 
|Off-balance sheet:  |  |         |        |  |         |  |        |         |  |  |         |  |  |  |       | 
|Trading liabilities |  |         | 26,980 |  |         |  | 16,870 |         |  |  | 3,170   |  |  |  | 2,167 | 
|Deposits by banks   |  |         | 1,167  |  |         |  | 499    |         |  |  | -       |  |  |  | -     | 
|                    |  |         | 28,147 |  |         |  | 17,369 |         |  |  | 3,170   |  |  |  | 2,167 | 

Purchase and resale agreements

Subsidiaries of
the Company also enter into purchase and resale agreements and similar transactions of equity and debt securities, which are accounted for as collateralised loans. Upon entering into such transactions, the subsidiaries receive collateral equal to
100%-105% of the loan amount. The level of collateral held is monitored daily and if required, further calls are made to ensure the market values of collateral remains at least equal to the loan balance. The subsidiaries are permitted to sell or
repledge the collateral held in the absence of default. At 31 December 2016, the fair value of such collateral received was £15,483m (2015: £3,996m). Of the collateral received, almost all was sold or repledged. The subsidiaries
have an obligation to return collateral that they have sold or pledged.

Stock borrowing and lending agreements

Obligations under stock borrowing and lending agreements represent contractual commitments to return stock borrowed. These obligations totalled £12,664m at
31 December 2016 (2015: £13,373m) and are offset by a contractual right to receive stock lent by the Santander UK group.

Derivatives business

In addition to the arrangements described above, collateral is also received from counterparties in the normal course of derivative business. At 31 December 2016,
£4,320m (2015: £3,002m) of such collateral in the form of cash had been received by the Santander UK group and is included in the table above.

Lending activities

In addition to the above collateral held as security for
assets, the Santander UK group may obtain a charge over a customers property in connection with its lending activities. Details of these arrangements are set out in the Credit risk section of the Risk review.





Santander UK plc243



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Annual Report 2016

Financial
statements









40. SHARE-BASED COMPENSATION

The Santander UK group
operates share schemes and arrangements for eligible employees. The main current schemes are the Sharesave Schemes, the Long-Term Incentive Plan and the Deferred Shares Bonus Plan. The Santander UK groups other current arrangement and scheme,
respectively, are free shares awarded to eligible employees and partnership shares. All the share options and awards relate to shares in Banco Santander SA.

The
amount charged to the income statement in respect of share-based payment transactions is set out in Note 6. The total carrying amount at the end of the year for liabilities arising from share-based payment transactions was £4.4m (2015:
£nil), none of which had vested at 31 December 2016 (2015: nil). Cash received from the exercise of share options was £nil (2015: £nil, 2014: £1m).

The main schemes are:

a) Sharesave Schemes

The Santander UK group launched its ninth HM Revenue & Customs approved Sharesave Scheme under Banco Santander SA ownership in September 2016. The first eight
Sharesave Schemes were launched each year from 2008 to 2015 in the month of September under broadly similar terms as the 2016 Scheme. Under, the Sharesave Schemes current HMRC-approved savings limits, eligible employees may enter into
contracts to save between £5 and £500 per month. For all schemes, at the expiry of a fixed term of three or five years after the grant date, the employees have the option to use these savings to acquire shares in Banco Santander SA
at a discount, calculated in accordance with the rules of the scheme. The discount is currently 20% of the average middle market quoted price of Banco Santander SA shares over the first three dealing days prior to invitation. The vesting of awards
under the scheme depends on continued employment with the Banco Santander SA group. Participants in the scheme have six months from the date of vest in which the option can be exercised.

The fair value of each Sharesave option for 2016, 2015 and 2014 has been estimated at the date of acquisition or grant using a Partial Differentiation Equation model
with the following assumptions:



|                                                                                                     |  |      |               |  |      |  |               |      |  |  |               | 
|---------------------------------------------------------------------------------------------------- |  | ---- | ------------- |  | ---- |  | ------------- | ---- |  |  | ------------- | 
|                                                                                                     |  | 2016 |               |  | 2015 |  |               | 2014 | 
|Risk free interest rate                                                                              |  |      | 0.31%-0.41%   |  |      |  | 1.06%-1.37%   |      |  |  | 1.56%-1.97%   | 
|Dividend yield                                                                                       |  |      | 6.28%-6.46%   |  |      |  | 6.91%-7.36%   |      |  |  | 10.16%-10.82% | 
|Expected volatility of underlying shares based on implied volatility to maturity date of each scheme |  |      | 31.39%-32.00% |  |      |  | 28.54%-29.11% |      |  |  | 24.16%-24.51% | 
|Expected lives of options granted under 3 and 5 year schemes                                         |  |      | 3 and 5 years |  |      |  | 3 and 5 years |      |  |  | 3 and 5 years | 

With the exception of vesting conditions that include terms related to market conditions, vesting conditions included in the terms of the
grant are not taken into account in estimating fair value. Non-market vesting conditions are taken into account by adjusting the number of shares or share options included in the measurement of the cost of the employee service so that ultimately,
the amount recognised in the income statement reflects the number of vested shares or share options.

Where vesting conditions are related to market conditions, the
charges for the services received are recognised regardless of whether or not the market-related vesting conditions are met, provided that the non-market vesting conditions are met. Share price volatility has been based upon the range of implied
volatility for the Banco Santander SA shares at the strikes and tenors in which the majority of the sensitivities lie.

The following table summarises the movement
in the number of share options during the year, together with the changes in weighted average exercise price over the same period.



|                                             |  |                          |          |  |                                  |  |      |                          |  |  |                                  |  |  |                          |      |  |                                  |  |         |  |  |  |      | 
|-------------------------------------------- |  | ------------------------ | -------- |  | -------------------------------- |  | ---- | ------------------------ |  |  | -------------------------------- |  |  | ------------------------ | ---- |  | -------------------------------- |  | ------- |  |  |  | ---- | 
|                                             |  | 2016                     |          |  | 2015                             |  |      | 2014                     | 
|                                             |  | Number of options
 000s |          |  | Weighted averageexercise price
£ |  |      | Number of options
 000s |  |  | Weighted averageexercise price
£ |  |  | Number of options
 000s |      |  | Weighted averageexercise price
£ | 
|Options outstanding at the start of the year |  |                          | 24,762   |  |                                  |  | 3.53 |                          |  |  | 19,122                           |  |  |                          | 4.19 |  |                                  |  | 15,895  |  |  |  | 3.98 | 
|Options granted during the year              |  |                          | 17,296   |  |                                  |  | 4.91 |                          |  |  | 14,074                           |  |  |                          | 3.13 |  |                                  |  | 6,745   |  |  |  | 4.91 | 
|Options exercised during the year            |  |                          | (338)    |  |                                  |  | 3.67 |                          |  |  | (1,839)                          |  |  |                          | 3.75 |  |                                  |  | (1,375) |  |  |  | 4.36 | 
|Options forfeited/expired during the year    |  |                          | (12,804) |  |                                  |  | 3.51 |                          |  |  | (6,595)                          |  |  |                          | 4.50 |  |                                  |  | (2,143) |  |  |  | 4.85 | 
|Options outstanding at the end of the year   |  |                          | 28,916   |  |                                  |  | 3.08 |                          |  |  | 24,762                           |  |  |                          | 3.53 |  |                                  |  | 19,122  |  |  |  | 4.19 | 
|Options exercisable at the end of the year   |  |                          | 2,334    |  |                                  |  | 4.30 |                          |  |  | 2,807                            |  |  |                          | 3.76 |  |                                  |  | 517     |  |  |  | 5.28 | 

The weighted average grant-date fair value of options granted under the Sharesave scheme during the year was £0.65 (2015:
£0.50, 2014: £0.56). The weighted average share price at the date the share options were exercised was £3.79 (2015: £3.79, 2014: £5.59).

The following table summarises the range of exercise prices and weighted average remaining contractual life of the options outstanding at 31 December 2016 and 2015.



|                         |  |                                                  |   |  |                                  |  |      |                                                  |  |  |                                  |  |  |  |      | 
|------------------------ |  | ------------------------------------------------ | - |  | -------------------------------- |  | ---- | ------------------------------------------------ |  |  | -------------------------------- |  |  |  | ---- | 
|                         |  | 2016                                             |   |  | 2015                             | 
|                         |  | Options outstanding                              |   |  | Options outstanding              | 
|Range of exercise prices |  | Weighted average remainingcontractual life
years |   |  | Weighted average exerciseprice
£ |  |      | Weighted average remainingcontractual life
years |  |  | Weighted average exerciseprice
£ | 
|£2 to £3                 |  |                                                  | 4 |  |                                  |  | 2.75 |                                                  |  |  | -                                |  |  |  | -    | 
|£3 to £4                 |  |                                                  | 3 |  |                                  |  | 3.28 |                                                  |  |  | 3                                |  |  |  | 3.32 | 
|£4 to £5                 |  |                                                  | 2 |  |                                  |  | 4.82 |                                                  |  |  | 2                                |  |  |  | 4.84 | 





244Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





b) Long-Term Incentive Plan (LTIP)

The LTIP was
reintroduced in 2014 and amended for 2015 awards under which conditional cash awards were made to certain Executive Directors, Key Management Personnel (as defined in Note 41) and other nominated individuals which are converted into shares in Banco
Santander SA at the time of vesting and deferred for three years. There was no LTIP awarded in 2016 due to the introduction of a single variable remuneration framework across the Banco Santander group.

The LTIP plans granted in 2015 and 2014 involve a one-year performance cycle for vesting with further three-year performance conditions applied to the deferral of 2015
awards. Beneficiaries were allocated an initial award determined in GBP which was converted into shares in Banco Santander SA in January 2015 and January 2016 respectively. The 2014 LTIP vested at 100% in January 2015 based on Banco Santander
SAs relative Total Shareholder Return (TSR) performance in 2014 versus a comparator group and deferred over three years. The 2015 LTIP vested at 91.5% in January 2016 based on Banco Santander SAs Earnings Per Share (EPS) and Return on
Tangible Equity (RoTE) performance against budget in 2015 and was deferred for three years.

2015 LTIP

Employees were allocated an initial award determined in GBP in 2015 which was converted into shares in Banco Santander SA, in January 2016. The 2015 LTIP
vested at 91.5% based on Banco Santander SAs relative EPS and RoTE performance in 2015 versus a comparator group. The vested award will be deferred over three years and payable in 2019 subject to Banco Santander SAs continuing relative
performance to comparators of EPS, RoTE and other non-financial measures such as Top 3 best bank to work for, Top 3 in customer satisfaction and loyal customers as well as continuing employment.

The following table summarises the movement in the value of conditional awards in the 2015 LTIP during 2016 and 2015:



|                                                          |  |           |       |  |           |  |       | 
|--------------------------------------------------------- |  | --------- | ----- |  | --------- |  | ----- | 
|                                                          |  | 2016
£000 |       |  | 2015
£000 | 
|Conditional awards at the beginning of the year           |  |           | 6,769 |  |           |  | -     | 
|Conditional awards made during the year                   |  |           | -     |  |           |  | 6,769 | 
|Conditional awards forfeited or cancelled during the year |  |           | (51)  |  |           |  | -     | 
|Conditional awards outstanding at the end of the year     |  |           | 6,718 |  |           |  | 6,769 | 

The amount that could vest after the deferral period will depend 25% on EPS growth vs Peers, 25% on RoTE, 20% on Top 3 best bank to work
for, 15% on Top 3 bank in customer satisfaction and 15% on loyal customers. The peer group against whom the EPS growth will be measured is a comparator group of 17 financial institutions. EPS and RoTE will be measured over a three-year period from
2015 to 2017, others will be tested once in 2017.



|                                              |  |   |                                                              | 
|--------------------------------------------- |  | - | ------------------------------------------------------------ | 
|                                              |  |   | Percentage of maximum shares in that tranche to be delivered | 
|Banco Santander SAs place in the EPS ranking |  | % |                                                             
|1st to 5th                                    |  |   | 100                                                          | 
|6th                                           |  |   | 87.5                                                         | 
|7th                                           |  |   | 75                                                           | 
|8th                                           |  |   | 62.5                                                         | 
|9th                                           |  |   | 50                                                           | 
|10th and below                                |  |   | -                                                            | 



|                          |  |   |                                                              | 
|------------------------- |  | - | ------------------------------------------------------------ | 
|                          |  |   | Percentage of maximum shares in that tranche to be delivered | 
|Banco Santander SAs RoTE |  | % |                                                             
|12% or above              |  |   | 100                                                          | 
|11-12%                    |  |   | 75                                                           | 
|Below 11%                 |  |   | -                                                            | 

On a country level, 100% vests if rated top 3 best bank to work for and top 3 in customer satisfaction. 100% vests if the target for
loyal customers is met in December 2017 weighted equally between retail and corporate customers. For full vesting at the Banco Santander group level, at least 6 of the 10 core countries for Banco Santander should get the top 3 best bank to work for,
must be top 3 in customer satisfaction in all 10 countries, must have 17 million retail and 1.1 million corporate loyal customers. A sliding scale applies below this threshold with 50% vesting if there are 15 million retail and
1 million corporate loyal customers, any less would lead to no vesting.

2014 LTIP

Employees were allocated an initial award determined in GBP in 2014 which was converted into shares in Banco Santander SA in January 2015. The 2014 LTIP vested at 100%
based on Banco Santander SAs relative TSR performance in 2014 versus a comparator group. The vested award will be deferred over three years and payable in equal tranches in 2016, 2017 and 2018 subject to Banco Santander SAs continuing
relative TSR performance to comparators and continuing employment.

The following table summarises the movement in the value of conditional awards in the 2014 LTIP
during 2016, 2015 and 2014:



|                                                          |  |           |         |  |           |  |       |           |  |  |       | 
|--------------------------------------------------------- |  | --------- | ------- |  | --------- |  | ----- | --------- |  |  | ----- | 
|                                                          |  | 2016
£000 |         |  | 2015
£000 |  |       | 2014
£000 | 
|Conditional awards at the beginning of the year           |  |           | 5,102   |  |           |  | 5,355 |           |  |  | -     | 
|Conditional awards made during the year                   |  |           | -       |  |           |  | -     |           |  |  | 5,355 | 
|Conditional awards forfeited or cancelled during the year |  |           | (1,909) |  |           |  | (253) |           |  |  | -     | 
|Conditional awards outstanding at the end of the year     |  |           | 3,193   |  |           |  | 5,102 |           |  |  | 5,355 | 

See Note 41 for details of conditional share awards made to certain Executive Directors and Other Key Management Personnel under the
LTIP.





Santander UK plc245



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##### Table of Contents



Annual Report 2016

Financial
statements









c) Deferred shares

Deferred incentive awards are
designed to align employee performance with shareholder value and encourage increased retention of senior employees. During 2016, in compliance with the PRA Rulebook and Remuneration Code, conditional share awards were made to Santander UK employees
(designated as Code Staff). Such employees receive part of their annual bonus as a deferred award comprising 50% in shares, and 50% in cash. Any deferred awards, including those in Banco Santander SA shares, are dependent on future service. For 2016
bonus awards, deferral of the award is over a three, five or seven-year period, dependent on Code Staff categorisation or Senior Manager Function designation, with delivery of equal tranches of shares taking place on or around the anniversary of the
initial award. Deferred awards in shares are subject to an additional one-year retention period from the point of delivery.

Code Staff are required to defer either
40% or 60% of any annual bonus (40% for variable pay of less than £500,000, 60% for variable pay at or above this amount). Vesting of both deferred incentive awards and long-term incentive awards is subject to risk and performance adjustment
in the event of deficient performance and prudent financial control provisions in accordance with the PRA Rulebook and Remuneration Code. For Code Staff, any variable remuneration paid for performance after 1 January 2015, is also subject to
clawback in line with the PRA Rulebook and Remuneration Code.

d) Other arrangements and schemes

The Santander UK group also operates a Partnership Shares scheme for eligible employees under the Share Incentive Plan (SIP) umbrella. Participants can elect to invest
up to £1,800 per tax year (or no more than 10% of an employees salary for the tax year) from pre-tax salary to purchase Banco Santander SA shares. Shares are held in trust for the participants. There are no vesting conditions
attached to these shares, and no restrictions as to when the shares can be removed from the trust. However, if a participant chooses to sell the shares before the end of five years, they will be liable for the taxable benefit received when the
shares are taken out of the trust. The shares can be released from trust after five years free of income tax and national insurance contributions. 2,110,617 shares were outstanding at 31 December 2016 (2015: 1,772,800 shares).

41. TRANSACTIONS WITH DIRECTORS AND OTHER KEY MANAGEMENT PERSONNEL

a) Remuneration of Directors and Other Key Management Personnel

The remuneration of the Directors and Other Key Management Personnel of the Santander UK group is set out in aggregate below.



|                                                                            |  |        |            |  |        |  |            |        |  |  |            | 
|--------------------------------------------------------------------------- |  | ------ | ---------- |  | ------ |  | ---------- | ------ |  |  | ---------- | 
|Directors remuneration                                                     |  | 2016
£ |            |  | 2015
£ |  |            | 2014
£ | 
|Salaries and fees                                                           |  |        | 3,604,999  |  |        |  | 4,694,260  |        |  |  | 5,469,334  | 
|Performance-related payments (1)                                            |  |        | 2,330,000  |  |        |  | 2,607,407  |        |  |  | 5,459,000  | 
|Other fixed remuneration (pension and other allowances & non-cash benefits) |  |        | 635,493    |  |        |  | 1,002,320  |        |  |  | 1,064,984  | 
|Expenses                                                                    |  |        | 120,302    |  |        |  | 115,382    |        |  |  | 162,723    | 
|Total remuneration                                                          |  |        | 6,690,794  |  |        |  | 8,419,369  |        |  |  | 12,156,041 | 
|                                                                            |  |        |           
|Directors and Other Key Management Personnel remuneration                  |  |        |            |  |        |  |            |        | 
|Short-term employee benefits(2)                                             |  |        | 24,757,161 |  |        |  | 19,950,608 |        |  |  | 24,812,667 | 
|Post-employment benefits                                                    |  |        | 1,918,144  |  |        |  | 1,825,688  |        |  |  | 1,421,603  | 
|Share-based payments                                                        |  |        | -          |  |        |  | 400,948    |        |  |  | 154,506    | 
|Other long-term benefits                                                    |  |        | -          |  |        |  | -          |        |  |  | -          | 
|Termination benefits                                                        |  |        | -          |  |        |  | -          |        |  |  | -          | 
|                                                                            |  |        | 26,675,305 |  |        |  | 22,177,244 |        |  |  | 26,388,776 | 

|(1) | In line with the Code, a proportion of the performance-related payment was deferred. Further details can be found in Note 40.
|--- | -----------------------------------------------------------------------------------------------------------------------------

|(2) | Excludes payments made as buy-outs of deferred performance-related payments in 2016 of £2,732,357 in connection with previous employment for five individuals (2015: £3,453,956 for five individuals; 2014:
£1,610,630 for three individuals).
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In 2016, the remuneration, excluding pension contributions, of the highest paid Director, was
£4,535,756 (2015: £3,957,819) of which £2,330,000 (2015: £1,760,000) was performance related. In 2016, there was no pension benefit accrued for the highest paid Director but in respect of the qualifying past services to
Santander UK to 31 May 2009 he has a deferred pension benefit accruing under a defined benefit scheme of £15,450 p.a. (2015: £15,450 p.a), other than that accrued by, or treated to be accrued by a Spanish subsidiary of Banco
Santander SA).





246Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





b) Retirement benefits

Defined benefit pension schemes
are provided to certain employees. See Note 34 for a description of the schemes and the related costs and obligations. One director has a deferred pension benefit accruing under a defined benefit scheme of £15,450 p.a. in respect of the
qualifying services to Santander UK and based on previous service with Santander UK to 31 May 2009 (2015: £15,450). Ex gratia pensions paid to former Directors of Santander UK plc in 2016, which have been provided for previously, amounted
to £14,893 (2015: £14,893, 2014: £14,893). In 1992, the Board decided not to award any new such ex gratia pensions.

c)
Transactions with Directors, Other Key Management Personnel and each of their connected persons

Directors, Other Key Management Personnel (Defined as the
Board of the Company and the Executive Committee of Santander UK plc who served during the year) and their connected persons have undertaken the following transactions with the Santander UK group in the course of normal banking business.



|                                                          |  |      |     |  |      |  |         |     |  |  |      |  |  |  |         | 
|--------------------------------------------------------- |  | ---- | --- |  | ---- |  | ------- | --- |  |  | ---- |  |  |  | ------- | 
|                                                          |  | 2016 |     |  | 2015 | 
|                                                          |  | No.  |     |  | £000 |  |         | No. |  |  | £000 | 
|Secured loans, unsecured loans and overdrafts             |  |      |     |  |      |  |         |     |  |  |      |  |  |  |         | 
|At 1 January                                              |  |      | 18  |  |      |  | 5,492   |     |  |  | 10   |  |  |  | 3,768   | 
|Net movements in the year                                 |  |      | (1) |  |      |  | (297)   |     |  |  | 8    |  |  |  | 1,724   | 
|At 31 December                                            |  |      | 17  |  |      |  | 5,195   |     |  |  | 18   |  |  |  | 5,492   | 
|Deposit, bank and instant access accounts and investments |  |      |     |  |      |  |         |     |  |  |      |  |  |  |         | 
|At 1 January                                              |  |      | 26  |  |      |  | 14,678  |     |  |  | 18   |  |  |  | 16,882  | 
|Net movements in the year                                 |  |      | -   |  |      |  | (5,540) |     |  |  | 8    |  |  |  | (2,204) | 
|At 31 December                                            |  |      | 26  |  |      |  | 9,138   |     |  |  | 26   |  |  |  | 14,678  | 

During the year ended 31 December 2016, two Directors undertook sharedealing transactions through the Santander UK groups
execution-only stockbroker (2015: five Directors) with an aggregate net value of £10,080 (2015: £156,699). Any transactions were on normal business terms and standard commission rates were payable.

In 2016 and 2015, no Director held any interest in the shares of any company within Santander UK at any time and no Director exercised or was granted any rights to
subscribe for shares in any company within Santander UK. In addition, in 2016 and 2015, no Directors exercised share options over shares in Banco Santander SA, the ultimate parent company of the Company.

Secured and unsecured loans are made to Directors, Other Key Management Personnel and their connected persons, in the ordinary course of business, with terms prevailing
for comparable transactions and on the same terms and conditions as applicable to other employees within the Santander UK group. Such loans do not involve more than the normal risk of collectability or present any unfavourable features. Amounts
deposited by Directors, Other Key Management Personnel and their connected persons earn interest at the same rates as those offered to the market or on the same terms and conditions applicable to other employees within the Santander UK group.
Investments are entered into by Directors, Other Key Management Personnel and their connected persons on normal market terms and conditions, or on the same terms and conditions as applicable to other employees within Santander UK group.

In 2016, loans were made to five Directors (2015: six Directors), with a principal amount of £25,560 outstanding at 31 December 2016 (2015: £28,733). In
2016, loans were made to twelve members of Santander UKs Key Management Personnel (2015: twelve), with a principal amount of £5,169,234 outstanding at 31 December 2016 (2015: £5,462,770).

In 2016 and 2015, there were no other transactions, arrangements or agreements with Santander UK in which Directors or Key Management Personnel or persons connected with
them had a material interest. In addition, in 2016 and 2015, no Director had a material interest in any contract of significance other than a service contract with Santander UK at any time during the year.

d) Santander Long-Term Incentive Plan

In 2016, no
Executive Directors (2015: one, 2014: three) or Other Key Management Personnel (2015: thirteen, 2014: nine) were granted conditional awards under the Santander LTIP. No LTIP award was granted in 2016.





Santander UK plc247



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##### Table of Contents



Annual Report 2016

Financial
statements









42. RELATED PARTY DISCLOSURES

a)
Parent undertaking and controlling party

The Companys immediate parent is Santander UK Group Holdings plc, a company incorporated in England and Wales.
Its ultimate parent and controlling party is Banco Santander SA, a company incorporated in Spain. The smallest and largest groups into which the Santander UK groups results are included are the group accounts of Santander UK Group Holdings plc
and Banco Santander SA, respectively, copies of which may be obtained from Shareholder Relations, 2 Triton Square, Regents Place, London NW1 3AN, on the corporate website (www.santander.co.uk) or on the Banco Santander corporate website
(www.santander.com).

b) Transactions with related parties

Transactions with related parties during the year and balances outstanding at the year-end:



|                            |  |                                          |         |  |                                        |  |         |                                 |  |  |                                 |  |  |         |       |  |         |  |       |         |  |  |         |  |  |         |        |  |         |  |        |  |  |  |          |  |  |  |          | 
|--------------------------- |  | ---------------------------------------- | ------- |  | -------------------------------------- |  | ------- | ------------------------------- |  |  | ------------------------------- |  |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  | ------- | ------ |  | ------- |  | ------ |  |  |  | -------- |  |  |  | -------- | 
|                            |  |                                          |         |  |                                        |  |         |                                 |  |  |                                 |  |  |         |       |  |         |  |       |         |  |  |         |  |  | Group   |       
|                            |  | Interest, fees and
other income received |         |  | Interest, fees and
other expenses paid |  |         | Amounts owed by
related parties |  |  | Amounts owed
to related parties | 
|                            |  | 2016
£m                                  |         |  | 2015
£m                                |  |         | 2014
£m                         |  |  | 2016
£m                         |  |  | 2015
£m |       |  | 2014
£m |  |       | 2016
£m |  |  | 2015
£m |  |  | 2016
£m |        |  | 2015
£m | 
|Ultimate parent             |  |                                          | (81)    |  |                                        |  | (76)    |                                 |  |  | (370)                           |  |  |         | 188   |  |         |  | 99    |         |  |  | 74      |  |  |         | 2,148  |  |         |  | 1,458  |  |  |  | (2,882)  |  |  |  | (3,557)  | 
|Immediate parent            |  |                                          | (3)     |  |                                        |  | (3)     |                                 |  |  | -                               |  |  |         | 139   |  |         |  | 19    |         |  |  | -       |  |  |         | 5      |  |         |  | 3      |  |  |  | (5,962)  |  |  |  | (1,960)  | 
|Fellow subsidiaries         |  |                                          | (271)   |  |                                        |  | (439)   |                                 |  |  | (520)                           |  |  |         | 653   |  |         |  | 743   |         |  |  | 867     |  |  |         | 363    |  |         |  | 1,077  |  |  |  | (1,101)  |  |  |  | (1,328)  | 
|Associates & joint ventures |  |                                          | (27)    |  |                                        |  | (24)    |                                 |  |  | (25)                            |  |  |         | 1     |  |         |  | -     |         |  |  | -       |  |  |         | 1,090  |  |         |  | 849    |  |  |  | (37)     |  |  |  | (15)     | 
|                            |  |                                          | (382)   |  |                                        |  | (542)   |                                 |  |  | (915)                           |  |  |         | 981   |  |         |  | 861   |         |  |  | 941     |  |  |         | 3,606  |  |         |  | 3,387  |  |  |  | (9,982)  |  |  |  | (6,860)  | 
|                            |  |                                          |         |  |                                        |  |         |                                 | 
|                            |  |                                          |         |  |                                        |  |         |                                 |  |  |                                 |  |  |         |       |  |         |  |       |         |  |  |         |  |  | Company |       
|                            |  | Interest, fees and
other income received |         |  | Interest, fees and
other expenses paid |  |         | Amounts owed by
related parties |  |  | Amounts owed
to related parties | 
|                            |  | 2016
£m                                  |         |  | 2015
£m                                |  |         | 2014
£m                         |  |  | 2016
£m                         |  |  | 2015
£m |       |  | 2014
£m |  |       | 2016
£m |  |  | 2015
£m |  |  | 2016
£m |        |  | 2015
£m | 
|Ultimate parent             |  |                                          | (54)    |  |                                        |  | (80)    |                                 |  |  | (7)                             |  |  |         | 52    |  |         |  | 152   |         |  |  | 83      |  |  |         | 46     |  |         |  | 31     |  |  |  | (736)    |  |  |  | (1,658)  | 
|Immediate parent            |  |                                          | (3)     |  |                                        |  | (3)     |                                 |  |  | -                               |  |  |         | 139   |  |         |  | 19    |         |  |  | -       |  |  |         | 6      |  |         |  | 3      |  |  |  | (5,963)  |  |  |  | (1,960)  | 
|Subsidiaries                |  |                                          | (3,979) |  |                                        |  | (2,366) |                                 |  |  | (3,426)                         |  |  |         | 4,554 |  |         |  | 3,853 |         |  |  | 3,812   |  |  |         | 57,187 |  |         |  | 33,450 |  |  |  | (39,411) |  |  |  | (58,468) | 
|Fellow subsidiaries         |  |                                          | (72)    |  |                                        |  | (120)   |                                 |  |  | (131)                           |  |  |         | 435   |  |         |  | 443   |         |  |  | 510     |  |  |         | 19     |  |         |  | 19     |  |  |  | (628)    |  |  |  | (702)    | 
|Associates & joint ventures |  |                                          | -       |  |                                        |  | -       |                                 |  |  | -                               |  |  |         | -     |  |         |  | -     |         |  |  | -       |  |  |         | -      |  |         |  | -      |  |  |  | (29)     |  |  |  | (12)     | 
|                            |  |                                          | (4,108) |  |                                        |  | (2,569) |                                 |  |  | (3,564)                         |  |  |         | 5,180 |  |         |  | 4,467 |         |  |  | 4,405   |  |  |         | 57,258 |  |         |  | 33,503 |  |  |  | (46,767) |  |  |  | (62,800) | 

In 2015, the Company issued £750m Perpetual Capital Securities, of which 100% was subscribed by the Companys immediate
parent, Santander SA UK Group Holdings plc. In 2014, the Company issued £800m Perpetual Capital Securities to its immediate parent company, Santander SA UK Group Holdings plc which were 100% subscribed by Banco Santander SA. Details of these
securities can be found in Note 36. In turn, Santander UK Group Holdings plc issued similar securities.

Further information on balances due from/(to) other Banco
Santander group companies is set out in the section Balances with other Banco Santander group companies in the Risk review. In 2013, Banco Santander SA sold 50% of its interest in its international asset management business to US private
equity investors. Santander UK plc has guaranteed certain of Banco Santander SAs obligations under the transaction. Under the terms of the transaction, Santander UK plcs obligations are fully cash collateralised by Banco Santander SA at
all times so that Santander UK plc has no residual credit exposure. The amount of cash collateral in relation to this transaction was £334m at 31 December 2016 (2015: £1,002m) and has been included in Deposits by banks. In addition,
transactions with pension schemes operated by the Santander UK group are described in Note 34. Further information on related party transactions during the year and balances outstanding at the year-end is described in the other Notes.

The above transactions were made in the ordinary course of business and substantially on the same terms as for comparable transactions with third party counterparties
and within limits acceptable to the PRA. Such transactions do not involve more than the normal risk of collectability or present any unfavourable features.





248Santander UK plc



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| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





43. FINANCIAL INSTRUMENTS

a)
Measurement basis of financial assets and liabilities

Financial assets and financial liabilities are measured on an ongoing basis either at fair value or at
amortised cost. Note 1 describes how the classes of financial instruments are measured, and how income and expenses, including fair value gains and losses, are recognised. The following tables analyse financial instruments into those measured at
fair value and those measured at amortised cost in the balance sheet:



|                                               |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        |       |  |  |         |  |  |  |         | 
|---------------------------------------------- |  | ------------------ | ------ |  | ---------------------- |  | ------- | ----- |  |  | ------- |  |  | ------------------ |  |  | ---------------------- |  | ------ | ----- |  |  | ------- |  |  |  | ------- | 
|                                               |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        | Group | 
|                                               |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        | 2015  | 
|                                               |  | Held at
fair value |        |  | Held at
amortised cost |  |         | Total |  |  |         |  |  | Held at
fair value |  |  | Held at
amortised cost |  |        | Total | 
|                                               |  | £m                 |        |  | £m                     |  |         | £m    |  |  |         |  |  | £m                 |  |  | £m                     |  |        | £m    | 
|Assets                                         |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        |       |  |  |         |  |  |  |         | 
|Cash and balances at central banks             |  |                    | -      |  |                        |  | 17,107  |       |  |  | 17,107  |  |  |                    |  |  |                        |  | -      |       |  |  | 16,842  |  |  |  | 16,842  | 
|Trading assets                                 |  |                    | 30,035 |  |                        |  | -       |       |  |  | 30,035  |  |  |                    |  |  |                        |  | 23,961 |       |  |  | -       |  |  |  | 23,961  | 
|Derivative financial instruments               |  |                    | 25,471 |  |                        |  | -       |       |  |  | 25,471  |  |  |                    |  |  |                        |  | 20,911 |       |  |  | -       |  |  |  | 20,911  | 
|Financial assets designated at fair value      |  |                    | 2,140  |  |                        |  | -       |       |  |  | 2,140   |  |  |                    |  |  |                        |  | 2,398  |       |  |  | -       |  |  |  | 2,398   | 
|Loans and advances to banks                    |  |                    | -      |  |                        |  | 4,348   |       |  |  | 4,348   |  |  |                    |  |  |                        |  | -      |       |  |  | 3,548   |  |  |  | 3,548   | 
|Loans and advances to customers                |  |                    | -      |  |                        |  | 199,738 |       |  |  | 199,738 |  |  |                    |  |  |                        |  | -      |       |  |  | 198,045 |  |  |  | 198,045 | 
|Loans and receivables securities               |  |                    | -      |  |                        |  | 257     |       |  |  | 257     |  |  |                    |  |  |                        |  | -      |       |  |  | 52      |  |  |  | 52      | 
|Available-for-sale securities                  |  |                    | 10,561 |  |                        |  | -       |       |  |  | 10,561  |  |  |                    |  |  |                        |  | 9,012  |       |  |  | -       |  |  |  | 9,012   | 
|Held-to-maturity investments                   |  |                    | -      |  |                        |  | 6,648   |       |  |  | 6,648   |  |  |                    |  |  |                        |  | -      |       |  |  | -       |  |  |  | -       | 
|Macro hedge of interest rate risk              |  |                    | -      |  |                        |  | 1,098   |       |  |  | 1,098   |  |  |                    |  |  |                        |  | -      |       |  |  | 781     |  |  |  | 781     | 
|                                               |  |                    | 68,207 |  |                        |  | 229,196 |       |  |  | 297,403 |  |  |                    |  |  |                        |  | 56,282 |       |  |  | 219,268 |  |  |  | 275,550 | 
|Non-financial assets                           |  |                    |        |  |                        |  |         |       |  |  | 5,739   |  |  |                    |  |  |                        |  |        |       |  |  |         |  |  |  | 5,856   | 
|                                               |  |                    |        |  |                        |  |         |       |  |  | 303,142 |  |  |                    |  |  |                        |  |        |       |  |  |         |  |  |  | 281,406 | 
|Liabilities                                    |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        |       |  |  |         |  |  |  |         | 
|Deposits by banks                              |  |                    | -      |  |                        |  | 9,769   |       |  |  | 9,769   |  |  |                    |  |  |                        |  | -      |       |  |  | 8,278   |  |  |  | 8,278   | 
|Deposits by customers                          |  |                    | -      |  |                        |  | 177,172 |       |  |  | 177,172 |  |  |                    |  |  |                        |  | -      |       |  |  | 164,074 |  |  |  | 164,074 | 
|Trading liabilities                            |  |                    | 15,560 |  |                        |  | -       |       |  |  | 15,560  |  |  |                    |  |  |                        |  | 12,722 |       |  |  | -       |  |  |  | 12,722  | 
|Derivative financial liabilities               |  |                    | 23,103 |  |                        |  | -       |       |  |  | 23,103  |  |  |                    |  |  |                        |  | 21,508 |       |  |  | -       |  |  |  | 21,508  | 
|Financial liabilities designated at fair value |  |                    | 2,440  |  |                        |  | -       |       |  |  | 2,440   |  |  |                    |  |  |                        |  | 2,016  |       |  |  | -       |  |  |  | 2,016   | 
|Debt securities in issue                       |  |                    | -      |  |                        |  | 50,346  |       |  |  | 50,346  |  |  |                    |  |  |                        |  | -      |       |  |  | 49,615  |  |  |  | 49,615  | 
|Subordinated liabilities                       |  |                    | -      |  |                        |  | 4,303   |       |  |  | 4,303   |  |  |                    |  |  |                        |  | -      |       |  |  | 3,885   |  |  |  | 3,885   | 
|Macro hedge of interest rate risk              |  |                    | -      |  |                        |  | 350     |       |  |  | 350     |  |  |                    |  |  |                        |  | -      |       |  |  | 110     |  |  |  | 110     | 
|                                               |  |                    | 41,103 |  |                        |  | 241,940 |       |  |  | 283,043 |  |  |                    |  |  |                        |  | 36,246 |       |  |  | 225,962 |  |  |  | 262,208 | 
|Non-financial liabilities                      |  |                    |        |  |                        |  |         |       |  |  | 4,015   |  |  |                    |  |  |                        |  |        |       |  |  |         |  |  |  | 3,539   | 
|                                               |  |                    |        |  |                        |  |         |       |  |  | 287,058 |  |  |                    |  |  |                        |  |        |       |  |  |         |  |  |  | 265,747 | 



|                                               |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        |         |  |  |         |  |  |  |         | 
|---------------------------------------------- |  | ------------------ | ------ |  | ---------------------- |  | ------- | ----- |  |  | ------- |  |  | ------------------ |  |  | ---------------------- |  | ------ | ------- |  |  | ------- |  |  |  | ------- | 
|                                               |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        | Company | 
|                                               |  |                    |        |  |                        |  |         | 2016  |  |  |         |  |  |                    |  |  |                        |  |        | 2015    | 
|                                               |  | Held at
fair value |        |  | Held at
amortised cost |  |         | Total |  |  |         |  |  | Held at
fair value |  |  | Held at
amortised cost |  |        | Total   | 
|                                               |  | £m                 |        |  | £m                     |  |         | £m    |  |  |         |  |  | £m                 |  |  | £m                     |  |        | £m      | 
|Assets                                         |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        |         |  |  |         |  |  |  |         | 
|Cash and balances at central banks             |  |                    | -      |  |                        |  | 13,591  |       |  |  | 13,591  |  |  |                    |  |  |                        |  | -      |         |  |  | 14,562  |  |  |  | 14,562  | 
|Derivative financial instruments               |  |                    | 7,391  |  |                        |  | -       |       |  |  | 7,391   |  |  |                    |  |  |                        |  | 3,302  |         |  |  | -       |  |  |  | 3,302   | 
|Financial assets designated at fair value      |  |                    | 85     |  |                        |  | -       |       |  |  | 85      |  |  |                    |  |  |                        |  | 60     |         |  |  | -       |  |  |  | 60      | 
|Loans and advances to banks                    |  |                    | -      |  |                        |  | 25,699  |       |  |  | 25,699  |  |  |                    |  |  |                        |  | -      |         |  |  | 18,962  |  |  |  | 18,962  | 
|Loans and advances to customers                |  |                    | -      |  |                        |  | 200,574 |       |  |  | 200,574 |  |  |                    |  |  |                        |  | -      |         |  |  | 181,608 |  |  |  | 181,608 | 
|Loans and receivables securities               |  |                    | -      |  |                        |  | 796     |       |  |  | 796     |  |  |                    |  |  |                        |  | -      |         |  |  | 4,991   |  |  |  | 4,991   | 
|Available-for-sale securities                  |  |                    | 10,069 |  |                        |  | -       |       |  |  | 10,069  |  |  |                    |  |  |                        |  | 7,828  |         |  |  | -       |  |  |  | 7,828   | 
|Held-to-maturity investments                   |  |                    | -      |  |                        |  | 6,648   |       |  |  | 6,648   |  |  |                    |  |  |                        |  | -      |         |  |  | -       |  |  |  | -       | 
|Macro hedge of interest rate risk              |  |                    | -      |  |                        |  | 198     |       |  |  | 198     |  |  |                    |  |  |                        |  | -      |         |  |  | (35)    |  |  |  | (35)    | 
|                                               |  |                    | 17,545 |  |                        |  | 247,506 |       |  |  | 265,051 |  |  |                    |  |  |                        |  | 11,190 |         |  |  | 220,088 |  |  |  | 231,278 | 
|Non-financial assets                           |  |                    |        |  |                        |  |         |       |  |  | 9,602   |  |  |                    |  |  |                        |  |        |         |  |  |         |  |  |  | 10,380  | 
|                                               |  |                    |        |  |                        |  |         |       |  |  | 274,653 |  |  |                    |  |  |                        |  |        |         |  |  |         |  |  |  | 241,658 | 
|Liabilities                                    |  |                    |        |  |                        |  |         |       |  |  |         |  |  |                    |  |  |                        |  |        |         |  |  |         |  |  |  |         | 
|Deposits by banks                              |  |                    | -      |  |                        |  | 19,741  |       |  |  | 19,741  |  |  |                    |  |  |                        |  | -      |         |  |  | 28,268  |  |  |  | 28,268  | 
|Deposits by customers                          |  |                    | -      |  |                        |  | 194,674 |       |  |  | 194,674 |  |  |                    |  |  |                        |  | -      |         |  |  | 189,291 |  |  |  | 189,291 | 
|Derivative financial liabilities               |  |                    | 3,440  |  |                        |  | -       |       |  |  | 3,440   |  |  |                    |  |  |                        |  | 3,028  |         |  |  | -       |  |  |  | 3,028   | 
|Financial liabilities designated at fair value |  |                    | 321    |  |                        |  | -       |       |  |  | 321     |  |  |                    |  |  |                        |  | -      |         |  |  | -       |  |  |  | -       | 
|Debt securities in issue                       |  |                    |        |  |                        |  | 34,496  |       |  |  | 34,496  |  |  |                    |  |  |                        |  | -      |         |  |  | -       |  |  |  | -       | 
|Subordinated liabilities                       |  |                    | -      |  |                        |  | 4,411   |       |  |  | 4,411   |  |  |                    |  |  |                        |  | -      |         |  |  | 3,951   |  |  |  | 3,951   | 
|Macro hedge of interest rate risk              |  |                    | -      |  |                        |  | 12      |       |  |  | 12      |  |  |                    |  |  |                        |  | -      |         |  |  | (5)     |  |  |  | (5)     | 
|                                               |  |                    | 3,761  |  |                        |  | 253,334 |       |  |  | 257,095 |  |  |                    |  |  |                        |  | 3,028  |         |  |  | 221,505 |  |  |  | 224,533 | 
|Non-financial liabilities                      |  |                    |        |  |                        |  |         |       |  |  | 3,510   |  |  |                    |  |  |                        |  |        |         |  |  |         |  |  |  | 3,174   | 
|                                               |  |                    |        |  |                        |  |         |       |  |  | 260,605 |  |  |                    |  |  |                        |  |        |         |  |  |         |  |  |  | 227,707 | 





Santander UK plc249



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##### Table of Contents



Annual Report 2016

Financial
statements











b) Valuation of financial instruments

Financial
instruments that are classified or designated at fair value through profit or loss, including those held for trading purposes, or available-for-sale, and all derivatives are stated at fair value. The fair value of such financial instruments is the
price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in the principal, or in its absence, the most advantageous market to which Santander UK group
has access at that date. The fair value of a liability reflects its non-performance risk.

Changes in the valuation of such financial instruments, including
derivatives, are included in the line item Net trading and other income in the income statement or in Other comprehensive income in the statement of comprehensive income as applicable.

(i) Initial measurement

The best evidence of the fair value of a financial
instrument at initial recognition is the transaction price unless the valuation is evidenced by comparison with other observable current market transactions in the same instrument or based on a valuation technique whose variables include significant
data from observable markets. Any difference between the transaction price and the value based on a valuation technique where the inputs are not based on data from observable current markets is not recognised in profit or loss on initial
recognition. Subsequent gains or losses are only recognised to the extent that they arise from a change in a factor that market participants would consider in setting a price.

(ii) Subsequent measurement

The Santander UK group applies the following fair
value hierarchy that prioritises the inputs to valuation techniques used in measuring fair value. The hierarchy establishes three categories for valuing financial instruments, giving the highest priority to unadjusted quoted prices in active markets
for identical assets or liabilities and the lowest priority to unobservable inputs. The three categories are: quoted prices in active markets (Level 1), internal models based on observable market data (Level 2) and internal models based on other
than observable market data (Level 3). If the inputs used to measure an asset or a liability fall to different levels within the hierarchy, the classification of the entire asset or liability will be based on the lowest level input that is
significant to the overall fair value measurement of the asset or liability.

The Santander UK group categorises assets and liabilities measured at fair value within
the fair value hierarchy based on the inputs to the valuation techniques as follows:



|         |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|-------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Level 1: |  | Unadjusted quoted prices for identical assets or liabilities in an active market that the Santander UK group can access at the measurement date. Level 1 positions include debt securities, equity securities, exchange traded
derivatives and short positions in securities.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|Level 2: |  | Quoted prices in inactive markets, quoted prices for similar assets or liabilities, recent market transactions, inputs other than quoted market prices for the asset or liability that are observable either directly or indirectly for
substantially the full term, and inputs to valuation techniques that are derived principally from or corroborated by observable market data through correlation or other statistical means for substantially the full term of the asset or liability.
Level 2 positions include loans and advances to banks, loans and advances to customers, equity securities, exchange rate derivatives, interest rate derivatives, equity and credit derivatives, debt securities, deposits by banks, deposits by customers
and debt securities in issue.
|Level 3: |  | Significant inputs to the pricing or valuation techniques are unobservable. Level 3 positions include exchange rate derivatives, equity and credit derivatives, loans and advances to customers, debt securities, equity securities and
debt securities in issue.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    

The Santander UK group assesses active markets for equity instruments based on the average daily trading volume both in absolute terms
and relative to the market capitalisation for the instrument. The Santander UK group assesses active markets for debt instruments based on both the average daily trading volume and the number of days with trading activity. The Santander UK group
assesses active markets for exchange traded derivatives based on the average daily trading volume both in absolute terms and relative to the market capitalisation for the instrument.

Market activity and liquidity is discussed in the relevant monthly Risk Forum as well as being part of the daily update given by each business at the start of the
trading day. This information, together with the observation of active trading and the magnitude of the bid-offer spreads allow consideration of the liquidity of a financial instrument.

Underlying assets and liabilities are reviewed to consider the appropriate adjustment to mark the mid-price reported in the trading systems to a fair value. This process
takes into account the liquidity of the position in the size of the adjustment required. These liquidity adjustments are presented and discussed at the monthly Risk Forum.

The appropriate measurement levels are regularly reviewed. Underlying assets and liabilities are regularly reviewed to determine whether a position should be regarded as
illiquid; the most important practical consideration being the observability of trading. Where the bid-offer spread is observable, this is tested against actual trades. Changes in the observability of significant valuation inputs during the
reporting period may result in a transfer of assets and liabilities within the fair value hierarchy. The Santander UK group recognises transfers between levels of the fair value hierarchy when there is a significant change in either its principal
market or the level of observability of the inputs to the valuation techniques as at the end of the reporting period.

The Santander UK group manages certain groups
of financial assets and liabilities on the basis of its net exposure to either market risks or credit risk. As a result it has elected to use the exception under IFRS 13 which permits the fair value measurement of a group of financial assets and
financial liabilities on the basis of the price that would be received to sell a net long position for a particular risk exposure or paid to transfer a net short position for a particular risk exposure in an orderly transaction between market
participants at the measurement date under current market conditions.

Financial instruments valued using observable market prices

If a quoted market price in an active market is available for an instrument, the fair value is calculated as the current bid price multiplied by the number of units of
the instrument held.





250Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit Report |  | statements        |  | financial statements





Financial instruments valued using a valuation technique

In the absence of a
quoted market price in an active market, management uses internal models to make its best estimate of the price that the market would set for that financial instrument. In order to make these estimations, various techniques are employed, including
extrapolation from observable market data and observation of similar financial instruments with similar characteristics. Wherever possible, valuation parameters for each product are based on prices directly observable in active markets or that can
be derived from directly observable market prices. Chosen valuation techniques incorporate all the factors that market participants would take into account in pricing transactions.

Unrecognised gains as a result of the use of valuation models using unobservable inputs (Day One profits)

The timing of recognition of deferred Day One profit and loss is determined individually. It is deferred until either the instruments fair value can be determined
using market observable inputs or is realised through settlement. The financial instrument is subsequently measured at fair value, adjusted for the deferred Day One profit and loss. Subsequent changes in fair value are recognised immediately in the
income statement without immediate reversal of deferred Day One profits and losses.

c) Fair values of financial instruments carried at
amortised cost

The following tables analyse the fair value of the financial instruments carried at amortised cost at 31 December 2016 and 2015,
including their levels in the fair value hierarchy  level 1, level 2 and level 3. It does not include fair value information for financial assets and financial liabilities carried at amortised cost if the carrying amount is a reasonable
approximation of fair value. Cash and balances at central banks which comprise of demand deposits with the Bank of England and the US Federal Reserve together with cash in tills and ATMs have been excluded from the table, as the carrying amount of
cash and balances at central banks is deemed an appropriate approximation of fair value. The fair value of the portfolio of UK Government debt securities acquired during the year and classified as held-to-maturity investments, as referred to in Note
1, is categorised in level 1 of the fair value hierarchy. Apart from these securities, there were no other financial instruments carried at amortised cost whose fair values would be classified in level 1.



|                                 |  |                                                |   |            |       |  |         |  |        |         |   |  |            |      |       |                |         |  |       |  |         |         |  |  |         |  |       |       |        |  |                |  |         |  |       |  |         |  |       |  |         | 
|-------------------------------- |  | ---------------------------------------------- | - | ---------- | ----- |  | ------- |  | ------ | ------- | - |  | ---------- | ---- | ----- | -------------- | ------- |  | ----- |  | ------- | ------- |  |  | ------- |  | ----- | ----- | ------ |  | -------------- |  | ------- |  | ----- |  | ------- |  | ----- |  | ------- | 
|                                 |  |                                                |   |            | Group | 
|                                 |  |                                                |   |            | 2016  |  |         |  |        |         |   |  |            | 2015 |      
|                                 |  |                                                |   | Fair value |       |  |         |  |        |         |   |  | Fair value |      |       |                |        
|                                 |  |                                                |   | Level 1    |       |  | Level 2 |  |        | Level 3 |   |  | Total      |      |       | Carrying
value |         |  |       |  |         | Level 2 |  |  | Level 3 |  |       | Total |        |  | Carrying
value | 
|                                 |  |                                                |   | £m         |       |  | £m      |  |        | £m      |   |  | £m         |      |       | £m             |         |  |       |  |         | £m      |  |  | £m      |  |       | £m    |        |  | £m             | 
|Assets                           |  |                                                |   |            |       |  |         |  |        |         |   |  |            |      |       |                |         |  |       |  |         |         |  |  |         |  |       |       |        |  |                |  |         | 
|Loans and advances to banks      |  |                                                |   |            | -     |  |         |  | 3,737  |         |   |  | 478        |      |       |                | 4,215   |  |       |  | 4,348   |         |  |  |         |  |       |       | 3,006  |  |                |  | 431     |  |       |  | 3,437   |  |       |  | 3,548   | 
|Loans and advances to customers  |  | Advances secured on residential property       |   |            | -     |  |         |  | -      |         |   |  | 157,961    |      |       |                | 157,961 |  |       |  | 154,448 |         |  |  |         |  |       |       | -      |  |                |  | 156,105 |  |       |  | 156,105 |  |       |  | 152,837 | 
|                                 |  | Corporate loans                                |   |            | -     |  |         |  | 6,739  |         |   |  | 24,851     |      |       |                | 31,590  |  |       |  | 31,596  |         |  |  |         |  |       |       | 6,426  |  |                |  | 24,821  |  |       |  | 31,247  |  |       |  | 31,515  | 
|                                 |  | Other advances                                 |   |            | -     |  |         |  | -      |         |   |  | 13,685     |      |       |                | 13,685  |  |       |  | 13,694  |         |  |  |         |  |       |       | -      |  |                |  | 13,685  |  |       |  | 13,685  |  |       |  | 13,693  | 
|                                 |  |                                                |   |            | -     |  |         |  | 6,739  |         |   |  | 196,497    |      |       |                | 203,236 |  |       |  | 199,738 |         |  |  |         |  |       |       | 6,426  |  |                |  | 194,611 |  |       |  | 201,037 |  |       |  | 198,045 | 
|Loans and receivables securities |  |                                                |   |            | -     |  |         |  | 272    |         |   |  | -          |      |       |                | 272     |  |       |  | 257     |         |  |  |         |  |       |       | 63     |  |                |  | -       |  |       |  | 63      |  |       |  | 52      | 
|Held-to-maturity investments     |  |                                                |   |            | 6,436 |  |         |  | -      |         |   |  | -          |      |       |                | 6,436   |  |       |  | 6,648   |         |  |  |         |  |       |       | -      |  |                |  | -       |  |       |  | -       |  |       |  | -       | 
|                                 |  |                                                |   |            |       |  |         |  |       
|Liabilities                      |  |                                                |   |            |       |  |         |  |        |         |   |  |            |      |       |                |         |  |       |  |         |         |  |  |         |  |       |       |        |  |                |  |         | 
|Deposits by banks                |  | Securities sold under agreements to repurchase |   |            | -     |  |         |  | 2,406  |         |   |  | -          |      |       |                | 2,406   |  |       |  | 2,384   |         |  |  |         |  |       |       | 4,265  |  |                |  | -       |  |       |  | 4,265   |  |       |  | 4,209   | 
|                                 |  | Other deposits                                 |   |            | -     |  |         |  | 6,954  |         |   |  | 438        |      |       |                | 7,392   |  |       |  | 7,385   |         |  |  |         |  |       |       | 3,577  |  |                |  | 501     |  |       |  | 4,078   |  |       |  | 4,069   | 
|                                 |  |                                                |   |            | -     |  |         |  | 9,360  |         |   |  | 438        |      |       |                | 9,798   |  |       |  | 9,769   |         |  |  |         |  |       |       | 7,842  |  |                |  | 501     |  |       |  | 8,343   |  |       |  | 8,278   | 
|Deposits by customers            |  | Current and demand accounts                    |   |            | -     |  |         |  | -      |         |   |  | 91,162     |      |       |                | 91,162  |  |       |  | 91,162  |         |  |  |         |  |       |       | -      |  |                |  | 76,193  |  |       |  | 76,193  |  |       |  | 76,193  | 
|                                 |  | Savings accounts                               |   |            | -     |  |         |  | -      |         |   |  | 58,461     |      |       |                | 58,461  |  |       |  | 58,305  |         |  |  |         |  |       |       | -      |  |                |  | 59,580  |  |       |  | 59,580  |  |       |  | 59,420  | 
|                                 |  | Time deposits                                  |   |            | -     |  |         |  | -      |         |   |  | 27,260     |      |       |                | 27,260  |  |       |  | 27,203  |         |  |  |         |  |       |       | -      |  |                |  | 28,085  |  |       |  | 28,085  |  |       |  | 27,959  | 
|                                 |  | Securities sold under agreements to repurchase |   |            | -     |  |         |  | 582    |         |   |  | -          |      |       |                | 582     |  |       |  | 502     |         |  |  |         |  |       |       | 546    |  |                |  | -       |  |       |  | 546     |  |       |  | 502     | 
|                                 |  |                                                |   |            | -     |  |         |  | 582    |         |   |  | 176,8      |      |       |                | 177,4   |  |       |  | 177,1   |         |  |  |         |  |       |       | 546    |  |                |  | 163,8   |  |       |  | 164,4   |  |       |  | 164,0   | 
|                                 |  |                                                |   |            |       |  |         |  |        |         |   |  | 83         |      |       |                | 65      |  |       |  | 72      |         |  |  |         |  |       |       |        |  |                |  | 58      |  |       |  | 04      |  |       |  | 74      | 
|Debt securities in issue         |  | Bonds and Medium-term notes                    |   |            | -     |  |         |  | 44,643 |         |   |  | -          |      |       |                | 44,643  |  |       |  | 42,840  |         |  |  |         |  |       |       | 41,425 |  |                |  | -       |  |       |  | 41,425  |  |       |  | 39,772  | 
|                                 |  | Securitisation programmes                      |   |            | -     |  |         |  | 6,410  |         |   |  | 1,196      |      |       |                | 7,606   |  |       |  | 7,506   |         |  |  |         |  |       |       | 8,942  |  |                |  | 997     |  |       |  | 9,939   |  |       |  | 9,843   | 
|                                 |  |                                                |   |            | -     |  |         |  | 51,053 |         |   |  | 1,196      |      |       |                | 52,249  |  |       |  | 50,346  |         |  |  |         |  |       |       | 50,367 |  |                |  | 997     |  |       |  | 51,364  |  |       |  | 49,615  | 
|Subordinated liabilities         |  |                                                | - |            |       |  | 4,562   |  |        |         | - |  |            |      | 4,562 |                |         |  | 4,303 |  |         |         |  |  |         |  | 4,022 |       |        |  | -              |  |         |  | 4,022 |  |         |  | 3,885 | 





Santander UK plc251



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##### Table of Contents



Annual Report 2016

Financial
statements









The fair values and carrying values of loans and advances to customers may be further analysed, between those that are impaired and those that are not impaired, as
follows:



|                                |  |                                          |  |          |     |  |              |  |     |       |  |  |          |  |  |       |         |  |          |  |         |  |  |  |         | 
|------------------------------- |  | ---------------------------------------- |  | -------- | --- |  | ------------ |  | --- | ----- |  |  | -------- |  |  | ----- | ------- |  | -------- |  | ------- |  |  |  | ------- | 
|                                |  |                                          |  | Group    |    
|                                |  |                                          |  | Impaired |     |  | Not impaired |  |     | Total | 
|                                |  |                                          |  | Fair     |     |  | Carrying     |  |     | Fair  |  |  | Carrying |  |  | Fair  |         |  | Carrying | 
|                                |  |                                          |  | Value    |     |  | value        |  |     | value |  |  | value    |  |  | value |         |  | value    | 
|2016                            |  |                                          |  | £m       |     |  | £m           |  |     | £m    |  |  | £m       |  |  | £m    |         |  | £m       | 
|Loans and advances to customers |  | Advances secured on residential property |  |          | 551 |  |              |  | 576 |       |  |  | 157,410  |  |  |       | 153,872 |  |          |  | 157,961 |  |  |  | 154,448 | 
|                                |  | Corporate loans                          |  |          | 254 |  |              |  | 348 |       |  |  | 31,336   |  |  |       | 31,248  |  |          |  | 31,590  |  |  |  | 31,596  | 
|                                |  | Other loans                              |  |          | 19  |  |              |  | 26  |       |  |  | 13,666   |  |  |       | 13,668  |  |          |  | 13,685  |  |  |  | 13,694  | 
|                                |  |                                          |  |          | 824 |  |              |  | 950 |       |  |  | 202,412  |  |  |       | 198,788 |  |          |  | 203,236 |  |  |  | 199,738 | 
|                                |  |                                          |  |          |     |  |             
|2015                            |  |                                          |  |          |     |  |              |  |     |       |  |  |          |  |  |       |         |  |          | 
|Loans and advances to customers |  | Advances secured on residential property |  |          | 545 |  |              |  | 583 |       |  |  | 155,560  |  |  |       | 152,254 |  |          |  | 156,105 |  |  |  | 152,837 | 
|                                |  | Corporate loans                          |  |          | 237 |  |              |  | 324 |       |  |  | 31,010   |  |  |       | 31,191  |  |          |  | 31,247  |  |  |  | 31,515  | 
|                                |  | Other loans                              |  |          | 8   |  |              |  | 11  |       |  |  | 13,677   |  |  |       | 13,682  |  |          |  | 13,685  |  |  |  | 13,693  | 
|                                |  |                                          |  |          | 790 |  |              |  | 918 |       |  |  | 200,247  |  |  |       | 197,127 |  |          |  | 201,037 |  |  |  | 198,045 | 

There are no loans and advances to banks, loans and receivable securities and held-to-maturity investments that are impaired.



|                                 |  |                                          |   |    |         |  |       |            |        |    |       |  |         |               |       |    |         |  |       |         |         |    |       |  |       |               |   |    |         |  |       |  |         |  |       |  |         | 
|-------------------------------- |  | ---------------------------------------- | - | -- | ------- |  | ----- | ---------- | ------ | -- | ----- |  | ------- | ------------- | ----- | -- | ------- |  | ----- | ------- | ------- | -- | ----- |  | ----- | ------------- | - | -- | ------- |  | ----- |  | ------- |  | ----- |  | ------- | 
|                                 |  | Company                                  |  
|                                 |  |                                          |   |    | 2016    |  |       |            |        |    |       |  |         |               |       |    | 2015    | 
|                                 |  | Fair value                               |   |    |         |  |       | Fair value |        |    |       | 
|                                 |  | Level 1                                  |   |    | Level 2 |  |       | Level 3    |        |    | Total |  |         | Carryingvalue |       |    | Level 2 |  |       | Level 3 |         |    | Total |  |       | Carryingvalue |  
|                                 |  |                                          |   | £m |         |  | £m    |            |        | £m |       |  | £m      |               |       | £m |         |  | £m    |         |         | £m |       |  | £m    |               |   | £m |        
|Assets                           |  |                                          |   |    |         |  |       |            |        |    |       |  |         |               |       |    |         |  |       |         |         |    |       |  |       |               |   |    |         |  |       |  |         |  |       |  |         | 
|Loans and advances to banks      |  |                                          |   |    | -       |  |       |            | 1,988  |    |       |  | 23,711  |               |       |    | 25,699  |  |       |         | 25,699  |    |       |  | 1,330 |               |   |    | 17,632  |  |       |  | 18,962  |  |       |  | 18,962  | 
|                                 |  |                                          |   |    |         |  |       |            |        |   
|Loans and advances to customers  |  | Advances secured on residential property |   |    | -       |  |       |            | -      |    |       |  | 157,961 |               |       |    | 157,961 |  |       |         | 154,448 |    |       |  | -     |               |   |    | 156,097 |  |       |  | 156,097 |  |       |  | 152,829 | 
|                                 |  | Corporate loans                          |   |    | -       |  |       |            | -      |    |       |  | 15,357  |               |       |    | 15,357  |  |       |         | 15,421  |    |       |  | -     |               |   |    | 15,217  |  |       |  | 15,217  |  |       |  | 15,282  | 
|                                 |  | Other advances                           |   |    | -       |  |       |            | -      |    |       |  | 30,695  |               |       |    | 30,695  |  |       |         | 30,705  |    |       |  | -     |               |   |    | 13,489  |  |       |  | 13,489  |  |       |  | 13,497  | 
|                                 |  |                                          |   |    | -       |  |       |            | -      |    |       |  | 204,013 |               |       |    | 204,013 |  |       |         | 200,574 |    |       |  | -     |               |   |    | 184,803 |  |       |  | 184,803 |  |       |  | 181,608 | 
|                                 |  |                                          |   |    |         |  |       |            |        |   
|Loans and receivables securities |  |                                          |   |    | -       |  |       |            | 813    |    |       |  | -       |               |       |    | 813     |  |       |         | 796     |    |       |  | 5,004 |               |   |    | -       |  |       |  | 5,004   |  |       |  | 4,991   | 
|Held-to-maturity investments     |  |                                          |   |    | 6,436   |  |       |            | -      |    |       |  | -       |               |       |    | 6,436   |  |       |         | 6,648   |    |       |  | -     |               |   |    | -       |  |       |  | -       |  |       |  | -       | 
|                                 |  |                                          |   |    |         |  |       |            |        |   
|Liabilities                      |  |                                          |   |    |         |  |       |            |        |    |       |  |         |               |       |    |         |  |       |         |         |    |       |  |       |               |   |    |         |  |       |  |         |  |       |  |         | 
|Deposits by banks                |  | Repos                                    |   |    | -       |  |       |            | 1,717  |    |       |  | -       |               |       |    | 1,717   |  |       |         | 1,706   |    |       |  | 1,586 |               |   |    | -       |  |       |  | 1,586   |  |       |  | 1,564   | 
|                                 |  | Other deposits                           |   |    | -       |  |       |            | 6,886  |    |       |  | 11,149  |               |       |    | 18,035  |  |       |         | 18,035  |    |       |  | 4,979 |               |   |    | 21,725  |  |       |  | 26,704  |  |       |  | 26,704  | 
|                                 |  |                                          |   |    | -       |  |       |            | 8,603  |    |       |  | 11,149  |               |       |    | 19,752  |  |       |         | 19,741  |    |       |  | 6,565 |               |   |    | 21,725  |  |       |  | 28,290  |  |       |  | 28,268  | 
|                                 |  |                                          |   |    |         |  |       |            |        |   
|Deposits by customers            |  | Current and demand accounts              |   |    | -       |  |       |            | -      |    |       |  | 112,149 |               |       |    | 112,149 |  |       |         | 112,149 |    |       |  | -     |               |   |    | 103,737 |  |       |  | 103,737 |  |       |  | 103,737 | 
|                                 |  | Savings accounts                         |   |    | -       |  |       |            | -      |    |       |  | 57,558  |               |       |    | 57,558  |  |       |         | 57,400  |    |       |  | -     |               |   |    | 56,271  |  |       |  | 56,271  |  |       |  | 56,111  | 
|                                 |  | Time deposits                            |   |    | -       |  |       |            | -      |    |       |  | 24,681  |               |       |    | 24,681  |  |       |         | 24,623  |    |       |  | -     |               |   |    | 29,069  |  |       |  | 29,069  |  |       |  | 28,941  | 
|                                 |  | Repos                                    |   |    | -       |  |       |            | 582    |    |       |  | -       |               |       |    | 582     |  |       |         | 502     |    |       |  | 546   |               |   |    | -       |  |       |  | 546     |  |       |  | 502     | 
|                                 |  |                                          |   |    | -       |  |       |            | 582    |    |       |  | 194,388 |               |       |    | 194,970 |  |       |         | 194,674 |    |       |  | 546   |               |   |    | 189,077 |  |       |  | 189,623 |  |       |  | 189,291 | 
|                                 |  |                                          |   |    |         |  |       |            |        |   
|Debt securities in issue         |  | Bonds and medium-term notes              |   |    | -       |  |       |            | 36,299 |    |       |  | -       |               |       |    | 36,299  |  |       |         | 34,496  |    |       |  | -     |               |   |    | -       |  |       |  | -       |  |       |  | -       | 
|                                 |  |                                          |   |    |         |  |       |            |       
|Subordinated liabilities         |  |                                          | - |    |         |  | 4,562 |            |        |    | -     |  |         |               | 4,562 |    |         |  | 4,411 |         |         |    | 4,088 |  |       |               | - |    |         |  | 4,088 |  |         |  | 3,951 | 



|                                |  |                                          |  |          |     |  |              |  |     |       |  |  |          |  |  |       |         |  |          |  |         |  |  |  |         | 
|------------------------------- |  | ---------------------------------------- |  | -------- | --- |  | ------------ |  | --- | ----- |  |  | -------- |  |  | ----- | ------- |  | -------- |  | ------- |  |  |  | ------- | 
|                                |  |                                          |  | Company  |    
|                                |  |                                          |  | Impaired |     |  | Not impaired |  |     | Total | 
|                                |  |                                          |  | Fair     |     |  | Carrying     |  |     | Fair  |  |  | Carrying |  |  | Fair  |         |  | Carrying | 
|                                |  |                                          |  | value    |     |  | value        |  |     | value |  |  | value    |  |  | value |         |  | value    | 
|2016                            |  |                                          |  | £m       |     |  | £m           |  |     | £m    |  |  | £m       |  |  | £m    |         |  | £m       | 
|Loans and advances to customers |  | Advances secured on residential property |  |          | 551 |  |              |  | 576 |       |  |  | 157,410  |  |  |       | 153,872 |  |          |  | 157,961 |  |  |  | 154,448 | 
|                                |  | Corporate loans                          |  |          | 149 |  |              |  | 204 |       |  |  | 15,208   |  |  |       | 15,217  |  |          |  | 15,357  |  |  |  | 15,421  | 
|                                |  | Other loans                              |  |          | 12  |  |              |  | 16  |       |  |  | 30,683   |  |  |       | 30,689  |  |          |  | 30,695  |  |  |  | 30,705  | 
|                                |  |                                          |  |          | 712 |  |              |  | 796 |       |  |  | 203,301  |  |  |       | 199,778 |  |          |  | 204,013 |  |  |  | 200,574 | 
|                                |  |                                          |  |          |     |  |             
|2015                            |  |                                          |  |          |     |  |              |  |     |       |  |  |          |  |  |       |         |  |          | 
|Loans and advances to customers |  | Advances secured on residential property |  |          | 545 |  |              |  | 583 |       |  |  | 155,552  |  |  |       | 152,246 |  |          |  | 156,097 |  |  |  | 152,829 | 
|Corporate loans                 |  |                                          |  |          | 252 |  |              |  | 344 |       |  |  | 14,965   |  |  |       | 14,938  |  |          |  | 15,217  |  |  |  | 15,282  | 
|Other loans                     |  |                                          |  |          | 2   |  |              |  | 3   |       |  |  | 13,487   |  |  |       | 13,494  |  |          |  | 13,489  |  |  |  | 13,497  | 
|                                |  |                                          |  |          | 799 |  |              |  | 930 |       |  |  | 184,004  |  |  |       | 180,678 |  |          |  | 184,803 |  |  |  | 181,608 | 

The carrying value above of any financial assets and liabilities that are designated as hedged items in a portfolio (or macro) fair value
hedge relationship excludes gains and losses attributable to the hedged risk, as this is presented as a single separate line item on the balance sheet.

Valuation
methodology

The fair value of financial instruments is the estimated price at which an orderly transaction to sell the asset or to transfer the liability would
take place between market participants at the measurement date under current market conditions. If a quoted market price is available for an instrument, the fair value is calculated based on the market price. Where quoted market prices are not
available, fair value is determined using pricing models which use a mathematical methodology based on accepted financial theories, depending on the product type and its components. Further information on fair value measurement can be found in Note
1 and the valuation techniques section below.





252Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Fair value management

The fair value exposures set out in the tables above are managed by using a combination of hedging derivatives and offsetting on balance sheet positions. The approach to
specific categories of financial instruments is described below.

Assets:

Cash and balances at central banks

This consists of demand deposits with the
Bank of England and the US Federal Reserve, together with cash in tills and ATMs. The carrying amount of cash and balances at central banks is deemed an appropriate approximation of the fair value. These have therefore been excluded from the table
above.

Loans and advances to banks

These comprise secured loans,
short-term placements with banks including collateral and unsettled financial transactions. The secured loans have been valued on the basis of spreads on credit default swaps for the term of the loans using valuation technique A as described in the
valuation technique section below. The carrying amount of the other items is deemed a reasonable approximation of their fair value, as the transactions are very short-term in duration.

Loans and advances to customers

The approach to estimating the fair value of
loans and advances to customers has been determined by discounting expected cash flows to reflect current market rates for lending of a similar credit quality. The determination of their fair values is an area of considerable estimation and
uncertainty as there is no observable market and values are significantly affected by customer behaviour.

i) Advances secured on residential property

The mortgage portfolio is stratified into tranches by LTV; (being a significant driver of market pricing) and the fair value of each tranche is calculated by
discounting contractual cash flows, after taking account of expected customer prepayment rates, using a valuation spread based on new business interest rates derived from competitor market information adjusted for the implied cost of funding.
Adjustments have also been made to:

|- | Reduce the weighted average lives of low LTV loans on SVR to reflect the uncertainty inherent in the value that could be achieved, given that the borrower could refinance at any time.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | Discount the value of performing loans with a LTV over 90% (with the exception of loans under the UK Governments Help to Buy scheme) to reflect the higher risk of this part of the portfolio.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|- | For impaired loans, we apply a discount to reflect the fact that the model does not fully take into account the higher risk nature of these loans and, in addition, discount the collateral value of loans with over 80%
LTV to reflect the greater possibility of repossession and recovery value.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

ii) Corporate loans

The corporate loan portfolio is stratified by product. For the performing book, the determination of their fair values takes account of the differential between existing
margins and an estimate of new business rates for similar loans in terms of segment, maturity and structure. Provisions are considered appropriate for the book that is not impaired. A discount has been applied to impaired loans. Although exits have
generally been achieved at carrying value, this does not reflect the discount a purchaser would require. A discount has therefore been applied based on the target return of 10-12% sought by distressed bond funds, who are the typical purchaser of the
assets.

With respect to the non-core corporate and legacy portfolios, including commercial mortgages, but except for Social Housing which is set out below, an
exercise has been undertaken to estimate their market value, based on an orderly disposal process over a period of three years. This portfolio is well provided for, and this is reflected in a relatively small mark-to-market deficit. This is
evidenced by disposals in 2016 and 2015 being achieved at carrying value with no additional provisions being required. In addition, the same 30% discount has been applied to the impaired book as for the corporate assets above.

With respect to Social Housing, part of this portfolio is held for historic reasons at fair value. The same methodology has been applied to calculate the fair value of
loans held at amortised cost. The fair value of this portion of the portfolio has been determined using valuation technique A as described in the valuation technique section below.

iii) Other loans

This consists of unsecured personal loans, credit
cards, overdrafts and consumer credit (car loans). The weighted average lives of these portfolios are short, and the business was written relatively recently. As a result, contractual interest rates approximate new business interest rates, and
therefore no mark-to-market surplus or deficit has been recorded with respect to the performing book with the exception of unsecured personal loans where a small surplus has been recognised based on the differential between existing margins and an
estimate of new business rates for similar loans. A discount of 30% has been applied to the impaired part of the book.

Loans and receivables securities

These debt securities consist of asset-backed securities. These are complex products and are valued with the assistance of an independent, specialist valuation firm.
These fair values are determined using industry-standard valuation techniques, including discounted cash-flow models. The inputs to these models used in these valuation techniques include quotes from market makers, prices of similar assets,
adjustments for differences in credit spreads, and additional quantitative and qualitative research. Disposals of these securities since 2008 have demonstrated that actual sales prices achieved have been close to fair values estimated under this
method.

Held-to-maturity investments

These consist of a portfolio of
government debt securities. The same methodology has been applied to calculate the fair value of loans held at amortised cost. The fair value of this portion of the portfolio has been determined using valuation technique A as described in the
valuation technique section below.





Santander UK plc253



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##### Table of Contents



Annual Report 2016

Financial
statements









Liabilities:

Deposits by banks

The fair value of deposits by banks, including repos, has been estimated using valuation technique A as described below.

Deposits by customers

The majority of deposit liabilities are payable on
demand and therefore can be deemed short-term in nature with the fair value equal to the carrying value. However, given the long-term and continuing nature of the relationships with the Santander UK groups customers, the Directors believe
there is significant value to the Santander UK group in this source of funds. Certain of the deposit liabilities are at a fixed rate until maturity. The deficit/surplus of fair value over carrying value of these liabilities has been estimated by
reference to the market rates available at the balance sheet date for similar deposit liabilities of similar maturities. The fair value of such deposits liabilities has been estimated using valuation technique A as described below.

Debt securities in issue and subordinated liabilities

Where reliable prices
are available, the fair value of debt securities in issue and subordinated liabilities has been calculated using quoted market prices. Other market values have been determined using valuation technique A as described below.

d) Fair values of financial instruments measured at fair value on a recurring basis

The following tables summarise the fair values of the financial assets and liabilities accounted for at fair value at 31 December 2016 and 2015, analysed by their
levels in the fair value hierarchy  Level 1, Level 2 and Level 3.



|                                               |                     |                                 |  |            |        |  |            |     |        |            |  |     |          |  |  |     |        |  |            |  |  |            |  |   |            |  |  |          |        |  |                     |     |     |  |  |     |        |  |  |       |       | 
|---------------------------------------------- | ------------------- | ------------------------------- |  | ---------- | ------ |  | ---------- | --- | ------ | ---------- |  | --- | -------- |  |  | --- | ------ |  | ---------- |  |  | ---------- |  | - | ---------- |  |  | -------- | ------ |  | ------------------- | --- | --- |  |  | --- | ------ |  |  | ----- | ----- | 
|                                               |                     | Group                           | 
|Balance sheet category                         |                     |                                 |  | 2016       |        |  |            |     |        | 2015       |  |     |          | 
|                                               |                     |                                 |  | Level 1
£m |        |  | Level 2
£m |     |        | Level 3
£m |  |     | Total
£m |  |  |     |        |  | Level 1
£m |  |  | Level 2
£m |  |   | Level 3
£m |  |  | Total
£m |        |  | Valuation
technique |    
|Assets                                         |                     |                                 |  |            |        |  |            |     |        |            |  |     |          |  |  |     |        |  |            |  |  |            |  |   |            |  |  |          |        |  |                     |     |     |  |  |     |        |  |  |       |       | 
|Trading assets                                 |                     | Loans and advances to banks     |  |            | -      |  |            |     | 7,478  |            |  |     | -        |  |  |     | 7,478  |  |            |  |  |            |  |   | -          |  |  |          | 5,433  |  |                     |     | -   |  |  |     | 5,433  |  |  |       | A     | 
|                                               |                     | Loans and advances to customers |  |            | 762    |  |            |     | 9,561  |            |  |     | -        |  |  |     | 10,323 |  |            |  |  |            |  |   | 580        |  |  |          | 5,380  |  |                     |     | -   |  |  |     | 5,960  |  |  |       | A     | 
|                                               |                     | Debt securities                 |  |            | 6,248  |  |            |     | -      |            |  |     | -        |  |  |     | 6,248  |  |            |  |  |            |  |   | 5,462      |  |  |          | -      |  |                     |     | -   |  |  |     | 5,462  |  |  |       | -     | 
|                                               |                     | Equity securities               |  |            | 5,986  |  |            |     | -      |            |  |     | -        |  |  |     | 5,986  |  |            |  |  |            |  |   | 7,106      |  |  |          | -      |  |                     |     | -   |  |  |     | 7,106  |  |  |       | -     | 
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Derivative assets                              |                     | Exchange rate contracts         |  |            | -      |  |            |     | 8,300  |            |  |     | 22       |  |  |     | 8,322  |  |            |  |  |            |  |   | -          |  |  |          | 5,277  |  |                     |     | 55  |  |  |     | 5,332  |  |  |       | A     | 
|                                               |                     | Interest rate contracts         |  |            | 1      |  |            |     | 15,795 |            |  |     | 19       |  |  |     | 15,815 |  |            |  |  |            |  |   | -          |  |  |          | 14,087 |  |                     |     | 18  |  |  |     | 14,105 |  |  |       | A & C | 
|                                               |                     | Equity and credit contracts     |  |            | -      |  |            |     | 1,272  |            |  |     | 62       |  |  |     | 1,334  |  |            |  |  |            |  |   | 88         |  |  |          | 1,271  |  |                     |     | 115 |  |  |     | 1,474  |  |  |       | B & D | 
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Financial assets designated at fair value      |                     | Loans and advances to customers |  |            | -      |  |            |     | 1,668  |            |  |     | 63       |  |  |     | 1,731  |  |            |  |  |            |  |   | -          |  |  |          | 1,832  |  |                     |     | 59  |  |  |     | 1,891  |  |  |       | A     | 
|                                               | Debt securities     |                                 |  | -          |        |  |            | 208 |        |            |  | 201 |          |  |  | 409 |        |  |            |  |  |            |  | - |            |  |  | 299      |        |  |                     | 208 |     |  |  | 507 |        |  |  | A & B |      
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Available-for-sale securities                  |                     | Equity securities               |  |            | 17     |  |            |     | 63     |            |  |     | 32       |  |  |     | 112    |  |            |  |  |            |  |   | 17         |  |  |          | 12     |  |                     |     | 100 |  |  |     | 129    |  |  |       | B     | 
|                                               |                     | Debt securities                 |  |            | 10,449 |  |            |     | -      |            |  |     | -        |  |  |     | 10,449 |  |            |  |  |            |  |   | 8,856      |  |  |          | 27     |  |                     |     | -   |  |  |     | 8,883  |  |  |       | C     | 
|Total assets at fair value                     |                     |                                 |  |            | 23,463 |  |            |     | 44,345 |            |  |     | 399      |  |  |     | 68,207 |  |            |  |  |            |  |   | 22,109     |  |  |          | 33,618 |  |                     |     | 555 |  |  |     | 56,282 |  |  |       |       | 
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Liabilities                                    |                     |                                 |  |            |        |  |            |     |        |            |  |     |          |  |  |     |        |  |            |  |  |            |  |   |            |  |  |          |        |  |                     |     |     |  |  |     |        |  |  |       |       | 
|Trading liabilities                            |                     | Deposits by banks               |  |            | -      |  |            |     | 4,200  |            |  |     | -        |  |  |     | 4,200  |  |            |  |  |            |  |   | -          |  |  |          | 2,777  |  |                     |     | -   |  |  |     | 2,777  |  |  |       | A     | 
|                                               |                     | Deposits by customers           |  |            | -      |  |            |     | 8,559  |            |  |     | -        |  |  |     | 8,559  |  |            |  |  |            |  |   | -          |  |  |          | 7,151  |  |                     |     | -   |  |  |     | 7,151  |  |  |       | A     | 
|                                               |                     | Short positions                 |  |            | 2,801  |  |            |     | -      |            |  |     | -        |  |  |     | 2,801  |  |            |  |  |            |  |   | 2,794      |  |  |          | -      |  |                     |     | -   |  |  |     | 2,794  |  |  |       | -     | 
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Derivative liabilities                         |                     | Exchange rate contracts         |  |            | -      |  |            |     | 6,009  |            |  |     | 21       |  |  |     | 6,030  |  |            |  |  |            |  |   | -          |  |  |          | 6,140  |  |                     |     | 55  |  |  |     | 6,195  |  |  |       | A     | 
|                                               |                     | Interest rate contracts         |  |            | -      |  |            |     | 16,202 |            |  |     | 11       |  |  |     | 16,213 |  |            |  |  |            |  |   | 1          |  |  |          | 13,677 |  |                     |     | 10  |  |  |     | 13,688 |  |  |       | A & C | 
|                                               |                     | Equity and credit contracts     |  |            | 1      |  |            |     | 817    |            |  |     | 42       |  |  |     | 860    |  |            |  |  |            |  |   | 2          |  |  |          | 1,583  |  |                     |     | 40  |  |  |     | 1,625  |  |  |       | B & D | 
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Financial liabilities designated at fair value |                     | Debt securities in issue        |  |            | -      |  |            |     | 1,908  |            |  |     | 6        |  |  |     | 1,914  |  |            |  |  |            |  |   | -          |  |  |          | 2,011  |  |                     |     | 5   |  |  |     | 2,016  |  |  |       | A     | 
|                                               | Structured deposits |                                 |  | -          |        |  |            | 526 |        |            |  | -   |          |  |  | 526 |        |  |            |  |  |            |  | - |            |  |  | -        |        |  |                     | -   |     |  |  | -   |        |  |  | A     |      
|Total liabilities at fair value                |                     |                                 |  |            | 2,802  |  |            |     | 38,221 |            |  |     | 80       |  |  |     | 41,103 |  |            |  |  |            |  |   | 2,797      |  |  |          | 33,339 |  |                     |     | 110 |  |  |     | 36,246 |  |  |       |       | 
|                                               |                    
|                                               |                     | Company                         | 
|Balance sheet category                         |                     |                                 |  | 2016       |        |  |            |     |        | 2015       |  |     |          | 
|                                               |                     |                                 |  | Level 1
£m |        |  | Level 2
£m |     |        | Level 3
£m |  |     | Total
£m |  |  |     |        |  | Level 1
£m |  |  | Level 2
£m |  |   | Level 3
£m |  |  | Total
£m |        |  | Valuation
technique |    
|Assets                                         |                     |                                 |  |            |        |  |            |     |        |            |  |     |          |  |  |     |        |  |            |  |  |            |  |   |            |  |  |          |        |  |                     |     |     |  |  |     |        |  |  |       |       | 
|Derivative assets                              |                     | Exchange rate contracts         |  |            | -      |  |            |     | 5,037  |            |  |     | -        |  |  |     | 5,037  |  |            |  |  |            |  |   | -          |  |  |          | 1,424  |  |                     |     | -   |  |  |     | 1,424  |  |  |       | A     | 
|                                               |                     | Interest rate contracts         |  |            | -      |  |            |     | 2,298  |            |  |     | -        |  |  |     | 2,298  |  |            |  |  |            |  |   | -          |  |  |          | 1,833  |  |                     |     | -   |  |  |     | 1,833  |  |  |       | A & C | 
|                                               |                     | Equity and credit contracts     |  |            | -      |  |            |     | 56     |            |  |     | -        |  |  |     | 56     |  |            |  |  |            |  |   | -          |  |  |          | 45     |  |                     |     | -   |  |  |     | 45     |  |  |       | B & D | 
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Financial assets designated at fair value      |                     | Loans and advances to customers |  |            | -      |  |            |     | 10     |            |  |     | -        |  |  |     | 10     |  |            |  |  |            |  |   | -          |  |  |          | -      |  |                     |     | -   |  |  |     | -      |  |  |       | A     | 
|                                               | Debt securities     |                                 |  | -          |        |  |            | 75  |        |            |  | -   |          |  |  | 75  |        |  |            |  |  |            |  | - |            |  |  | 60       |        |  |                     | -   |     |  |  | 60  |        |  |  | C     |      
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Available-for-sale securities                  |                     | Equity securities               |  |            | -      |  |            |     | 63     |            |  |     | 32       |  |  |     | 95     |  |            |  |  |            |  |   | -          |  |  |          | 12     |  |                     |     | 100 |  |  |     | 112    |  |  |       | B     | 
|                                               |                     | Debt securities                 |  |            | 9,974  |  |            |     | -      |            |  |     | -        |  |  |     | 9,974  |  |            |  |  |            |  |   | 7,689      |  |  |          | 27     |  |                     |     | -   |  |  |     | 7,716  |  |  |       | C     | 
|Total assets at fair value                     |                     |                                 |  |            | 9,974  |  |            |     | 7,539  |            |  |     | 32       |  |  |     | 17,545 |  |            |  |  |            |  |   | 7,689      |  |  |          | 3,401  |  |                     |     | 100 |  |  |     | 11,190 |  |  |       |       | 
|                                               |                     |                                 |  |            |        |  |            |     |        |            | 
|Liabilities                                    |                     |                                 |  |            |        |  |            |     |        |            |  |     |          |  |  |     |        |  |            |  |  |            |  |   |            |  |  |          |        |  |                     |     |     |  |  |     |        |  |  |       |       | 
|Derivative liabilities                         |                     | Exchange rate contracts         |  |            | -      |  |            |     | 1,556  |            |  |     | -        |  |  |     | 1,556  |  |            |  |  |            |  |   | -          |  |  |          | 1,379  |  |                     |     | -   |  |  |     | 1,379  |  |  |       | A     | 
|                                               |                     | Interest rate contracts         |  |            | -      |  |            |     | 1,635  |            |  |     | -        |  |  |     | 1,635  |  |            |  |  |            |  |   | -          |  |  |          | 1,413  |  |                     |     | -   |  |  |     | 1,413  |  |  |       | A & C | 
|                                               |                     | Equity and credit contracts     |  |            | -      |  |            |     | 249    |            |  |     | -        |  |  |     | 249    |  |            |  |  |            |  |   | -          |  |  |          | 236    |  |                     |     | -   |  |  |     | 236    |  |  |       | B     | 
|Total liabilities at fair value                |                     |                                 |  |            | -      |  |            |     | 3,440  |            |  |     | -        |  |  |     | 3,440  |  |            |  |  |            |  |   | -          |  |  |          | 3,028  |  |                     |     | -   |  |  |     | 3,028  |  |  |       |       | 





254Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements







Transfers between levels
of the fair value hierarchy

Transfers between levels of the fair value hierarchy are reported at the beginning of the period in which they occur.

During 2016, the following financial instruments were transferred between Level 1 and Level 2:

|- | Available-for-sale debt securities  Debt securities with fair values of £25m were transferred from Level 1 to Level 2 principally due to a lack of market transactions in these instruments.
|- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

During 2016, there were no transfers of financial instruments between Levels 2 and 3.

In 2015, the following financial instruments were transferred between Level 2 and Level 3:

|- | Exchange rate contracts - Securitisation cross currency swaps shown in derivative assets and derivative liabilities with fair values of £55m and £55m, respectively, were transferred from Level 2 to Level 3
principally due to a lack of market transactions in these instruments. The valuation techniques applied to estimate the fair value of these financial instruments are described in section i below as instruments 2 and 11.
|- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Interest rate contracts - Securitisation swaps shown in derivative assets and derivative liabilities with fair values of £8m and £6m, respectively, were transferred from Level 2 to Level 3 principally due to
a lack of market transactions in these instruments. The valuation techniques applied to estimate the fair value of these financial instruments are described in section i below as instruments 4 and 13.
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

There were no transfers of financial instruments between Levels 1 and 2 in 2015.

e) Valuation techniques

The main valuation techniques employed in internal models to measure the fair value of the financial instruments
disclosed above at 31 December 2016 and 2015 are set out below. In substantially all cases, the principal inputs into these models are derived from observable market data. The Santander UK group did not make any material changes to the
valuation techniques and internal models it used during the years ended 31 December 2016, 2015 and 2014.



| | A | In the valuation of financial instruments requiring static hedging (for example interest rate, currency derivatives and commodity swaps) and in the valuation of loans and advances and deposits, the present
value method is used. Expected future cash flows are discounted using the interest rate curves of the applicable currencies or forward commodity prices. The interest rate curves are generally observable market data and reference yield curves
derived from quoted interest rates in appropriate time bandings, which match the timings of the cash flows and maturities of the instruments. The forward commodity prices are generally observable market data.
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | B | In the valuation of equity financial instruments requiring dynamic hedging (principally equity securities, options and other structured instruments), proprietary local volatility and stochastic volatility models are
used. These types of models are widely accepted in the financial services industry. Observable market inputs used in these models include the bid-offer spread, foreign currency exchange rates, volatility and correlation between indices. In limited
circumstances, other inputs may be used in these models that are based on data other than observable market data, such as the Halifaxs UK House Price Index (HPI) volatility, HPI forward growth, HPI spot rate, mortality, mean reversion and
contingent litigation risk.
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | C | In the valuation of financial instruments exposed to interest rate risk that require either static or dynamic hedging (such as interest rate futures, caps and floors, and options), the present value method (futures),
Blacks model (caps/floors) and the Hull/White and Markov functional models (Bermudan options) are used. These types of models are widely accepted in the financial services industry. The significant inputs used in these models are observable
market data, including appropriate interest rate curves, volatilities, correlations and exchange rates. In limited circumstances, other inputs may be used in these models that are based on data other than observable market data, such as HPI
volatility, HPI forward growth, HPI spot rate and mortality.
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | D | In the valuation of linear instruments such as credit risk and fixed-income derivatives, credit risk is measured using dynamic models similar to those used in the measurement of interest rate risk. In the case of
non-linear instruments, if the portfolio is exposed to credit risk such as credit derivatives, the probability of default is determined using the par spread level. The main inputs used to determine the underlying cost of credit of credit derivatives
are quoted credit risk premiums and the correlation between the quoted credit derivatives of various issuers.
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The fair values of the financial
instruments arising from the Santander UK groups internal models take into account, among other things, contract terms and observable market data, which include such factors as bid-offer spread, interest rates, credit risk, exchange rates, the
quoted market price of raw materials and equity securities, volatility and prepayments. In all cases, when it is not possible to derive a valuation for a particular feature of an instrument, management uses judgement to determine the fair value of
the particular feature. In exercising this judgement, a variety of tools are used including proxy observable data, historical data and extrapolation techniques. Extrapolation techniques take into account behavioural characteristics of equity markets
that have been observed over time, and for which there is a strong case to support an expectation of a continuing trend in the future. Estimates are calibrated to observable market prices when they become available.

The Santander UK group believes its valuation methods are appropriate and consistent with other market participants. Nevertheless, the use of different valuation methods
or assumptions, including imprecision in estimating unobservable market inputs, to determine the fair value of certain financial instruments could result in different estimates of fair value at the reporting date and the amount of gain or loss
recorded for a particular instrument. Most of the valuation models are not significantly subjective, because they can be tested and, if necessary, recalibrated by the internal calculation of and subsequent comparison to market prices of actively
traded securities, where available.





Santander UK plc255



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##### Table of Contents



Annual Report 2016

Financial
statements









f) Fair value adjustments

The internal models
incorporate assumptions that the Santander UK group believes would be made by a market participant to establish fair value. Fair value adjustments are adopted when the Santander UK group considers that there are additional factors that would be
considered by a market participant that are not incorporated in the valuation model.

The Santander UK group classifies fair value adjustments as either
risk-related or model-related. The fair value adjustments form part of the portfolio fair value and are included in the balance sheet values of the product types to which they have been applied. The majority of these
adjustments relate to Global Corporate Banking. The magnitude and types of fair value adjustment adopted by Global Corporate Banking are listed in the following table:



|                                           |  |         |     |  |         |  |     | 
|------------------------------------------ |  | ------- | --- |  | ------- |  | --- | 
|                                           |  | 2016
£m |     |  | 2015
£m | 
|Risk-related:                              |  |         |     |  |         |  |     | 
|- Bid-offer and trade specific adjustments |  |         | 37  |  |         |  | 46  | 
|- Uncertainty                              |  |         | 49  |  |         |  | 42  | 
|- Credit risk adjustment                   |  |         | 50  |  |         |  | 23  | 
|- Funding fair value adjustment            |  |         | 20  |  |         |  |    | 
|                                           |  |         | 156 |  |         |  | 111 | 
|Model-related                              |  |         | 1   |  |         |  | 6   | 
|Day One profit                             |  |         | 4   |  |         |  | 1   | 
|                                           |  |         | 161 |  |         |  | 118 | 

Risk-related adjustments

Risk-related
adjustments are driven, in part, by the magnitude of the Santander UK groups market or credit risk exposure, and by external market factors, such as the size of market spreads.

(i) Bid-offer and trade specific adjustments

IFRS 13 requires that portfolios
are marked at bid or offer, as appropriate. Valuation models will typically generate mid-market values. The bid-offer adjustment reflects the cost that would be incurred if substantially all residual net portfolio market risks were closed using
available hedging instruments or by disposing of or unwinding the position.

The majority of the bid-offer adjustment relates to OTC derivative portfolios. For each
portfolio, the major risk types are identified. For each risk type, the net portfolio risks are first classified into buckets, and then a bid-offer spread is applied to each risk bucket based upon the market bid-offer spread for the relevant hedging
instrument.

The grouping of risk categories is dependent on the sensitivity factors of the trading portfolio. For example, interest rate risk will be by tenor and
options will be by strikes.

The granularity of the risk bucketing is principally determined by reference to the risk management practice undertaken, the granularity
of risk bucketing in the risk reporting process, and the extent of correlation between risk buckets. Within a risk type, the bid-offer adjustment for each risk bucket may be aggregated without offset or limited netting may be applied to reflect
correlation between buckets. There is no netting applied between risk types or between portfolios that are not managed together for risk management purposes. There is no netting across legal entities.

(ii) Uncertainty

Certain model inputs may be less readily determinable from
market data, and/or the choice of model itself may be more subjective. In these circumstances, there exists a range of possible values that the financial instrument or market parameter may assume and an adjustment may be necessary to reflect the
likelihood that in estimating the fair value of the financial instrument, market participants would adopt more conservative values for uncertain parameters and/or model assumptions than those used in the valuation model.

(iii) Credit risk adjustment

Credit risk adjustments comprise credit and debit
valuation adjustments. The credit valuation adjustment (CVA) is an adjustment to the valuation of OTC derivative contracts to reflect within fair value the possibility that the counterparty may default, and the Santander UK group may not receive the
full market value of the transactions. The debit valuation adjustment (DVA) is an adjustment to the valuation of the OTC derivative contracts to reflect within the fair value the possibility that the Santander UK group may default, and that the
Santander UK group may not pay full market value of the transactions.

The Santander UK group calculates a separate CVA and DVA for each Santander UK legal entity,
and within each entity for each counterparty to which the entity has exposure. The Santander UK group calculates the CVA by applying the probability of default of the counterparty to the expected positive exposure to the counterparty, and
multiplying the result by the loss expected in the event of default i.e. LGD. Conversely, the Santander UK group calculates the DVA by applying the PD of the Santander UK group, conditional on the non-default of the counterparty, to the expected
positive exposure of the counterparty to the Santander UK group and multiplying the result by the LGD. Both calculations are performed over the life of the potential exposure.

For most products the Santander UK group uses a simulation methodology to calculate the expected positive exposure to a counterparty. This incorporates a range of
potential exposures across the portfolio of transactions with the counterparty over the life of the portfolio. The simulation methodology includes credit mitigants such as counterparty netting agreements and collateral agreements with the
counterparty.

For certain types of exotic derivatives where the products are not currently supported by the standard methodology, the Santander UK group adopts
alternative methodologies. These may involve mapping transactions against the results for similar products which are valued using the standard methodology. In other cases, a simplified version of the standard methodology is applied. The calculation
is applied at a trade level, with more limited recognition of credit mitigants such as netting or collateral agreements than used in the standard methodology.





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The methodologies do not, in
general, account for wrong-way risk. Wrong-way risk arises where the underlying value of the derivative prior to any credit risk adjustment is positively correlated to the probability of default of the counterparty. When there is significant
wrong-way risk, a trade-specific approach is applied to reflect the wrong-way risk within the valuation. Exposure to wrong-way risk is limited via internal governance processes and deal pricing. The Santander UK group considers that an appropriate
adjustment to reflect wrong-way risk is currently £nil (2015: £nil).

(iv) Funding fair value adjustment

In 2016, Santander UK group revised its methodology for valuing uncollateralised derivative portfolios by introducing the funding fair value (FFVA) adjustment. The FFVA
is an adjustment to the valuation of OTC derivative positions to include the net cost of funding uncollateralised derivative positions. This is calculated by applying a suitable funding cost to the expected future funding exposure of any
uncollateralised component of the OTC derivative portfolio.

Model-related adjustments

Models used for portfolio valuation purposes may be based upon a simplifying set of assumptions that do not capture all material market characteristics. Additionally,
markets evolve, and models that were adequate in the past may require development to capture all material market characteristics in current market conditions. In these circumstances, model limitation adjustments are adopted. The Quantitative Risk
Group (QRG), an independent quantitative support function reporting into the Risk Department, highlights the requirement for model limitation adjustments and develops the methodologies employed. As model development progresses, model limitations are
addressed within the core revaluation models and a model limitation adjustment is no longer needed.

Day One profit adjustments

Day One profit adjustments are adopted where the fair value estimated by a valuation model is based on one or more significant unobservable inputs. Day One profit
adjustments are calculated and reported on a portfolio basis. Day One profit adjustments remain at a low level.

g) Control framework

Fair values are subject to a control framework designed to ensure that they are either determined or validated by a function independent of the risk-taker.
To this end, ultimate responsibility for the determination of fair values lies jointly with the Risk Department and the Finance Department. For all financial instruments where fair values are determined by reference to externally quoted prices or
observable pricing inputs to models, independent price determination or validation is utilised. In inactive markets, direct observation of a traded price may not be possible. In these circumstances, the Santander UK group will source alternative
market information to validate the financial instruments fair value, with greater weight given to information that is considered to be more relevant and reliable.

The factors that are considered in this regard include:

|- | The extent to which prices may be expected to represent genuine traded or tradeable prices
|- | ------------------------------------------------------------------------------------------

|- | The degree of similarity between financial instruments
|- | ------------------------------------------------------

|- | The degree of consistency between different sources
|- | ---------------------------------------------------

|- | The process followed by the pricing provider to derive the data
|- | ---------------------------------------------------------------

|- | The elapsed time between the date to which the market data relates and the balance sheet date
|- | ---------------------------------------------------------------------------------------------

|- | The manner in which the data was sourced.
|- | -----------------------------------------

The source of pricing data is considered as part of the process that
determines the classification of the level of a financial instrument. Consideration is given to the quality of the information available that provides the current mark-to-model valuation and estimates of how different these valuations could be on an
actual trade, taking into consideration how active the market is. For spot assets that cannot be sold due to illiquidity, forward estimates are discounted to provide an estimate of a realisable value over time. All adjustments for illiquid positions
are regularly reviewed to reflect changing market conditions.

Internal valuation model review

For fair values determined using a valuation model, the control framework may include, as applicable, independent development or validation of: (i) the logic within
valuation models; (ii) the inputs to those models; (iii) any adjustments required outside the valuation models; and (iv) where possible, model outputs.

All internal valuation models are validated independently by QRG. A validation report is produced for each model-derived valuation that assesses the mathematical
assumptions behind the model and the implementation of the model and its integration within the trading system. Where there is observable market data, the models calibrate to market. Where pricing data is unobservable then the input parameters are
regularly reviewed by QRG. The results of the independent valuation process and any changes to the fair value adjustments methodology are approved in line with the model risk framework and policy.

h) Internal models based on observable market data (Level 2)

1. Trading assets and liabilities

Loans and advances to banks and loans
and advances to customerssecurities purchased under resale agreements

These consist of repos and reverse repos as part of trading activities. The fair
value is estimated by using the present value method. Future cash flows are evaluated taking into consideration any derivative features of the reverse repos and are then discounted using the appropriate market rates for the applicable
maturity and currency. Under these agreements, the Santander UK group receives collateral with a market value equal to, or in excess of, the principal amount loaned. The level of collateral held is monitored daily and if required, further calls are
made to ensure the market values of collateral remains at least equal to the loan balance. As a result, there would be no adjustment, or an immaterial adjustment, to reflect the credit quality of the counterparty related to these agreements. As the
inputs are based on observable market data, these reverse repos are classified as level 2.





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Loans and advances to banks and loans and advances to customers - other

These
consist of term deposits placed which are short-term in nature and are both utilised and managed as part of the funding requirements of the trading book. The fair value is estimated using the present value method. Expected future cash
flows are discounted using the interest rate curves of the applicable currencies. The interest rate curves are generally observable market data and reference yield curves derived from quoted interest rates in appropriate time bandings, which match
the timings of the cashflows and maturities of the instruments. As the inputs are based on observable market data, these loans are classified as level 2.

Deposits by banks and deposits by customers - securities sold under repurchase agreements

These consist of repos with both professional non-bank customers and bank counterparties as part of trading activities. The fair value of repos is estimated using the
same technique as those reverse repos in trading assets discussed above. Under these agreements, the Santander UK group is required to provide and maintain collateral with a market value equal to, or in excess of, the principal amount borrowed. As a
result, there would be no adjustment, or an immaterial adjustment, to reflect the credit quality of the Santander UK group related to these agreements. As the inputs are based on observable market data, these repos are classified as level 2.

Deposits by banks and deposits by customers - other

These consist of certain
term and time deposits which tend to be short-term in nature and are both utilised and managed as part of the funding requirements of the trading book. These instruments are valued using the same techniques as those instruments in trading
assetsloans and advances to banks and loans and advances to customers discussed above. As the inputs are based on observable market data, these deposits are classified as level 2.

2. Derivative assets and liabilities

These consist of exchange rate, interest
rate, equity and credit and commodity contracts. The models used in estimating the fair value of these derivatives do not contain a high level of subjectivity as the methodologies used do not require significant judgement, and the inputs used are
observable market data such as plain vanilla interest rate swaps and option contracts. As the inputs are based on observable market data, these derivatives are classified as level 2. Certain cross currency swaps, reversionary property interests,
credit default swaps and options and forwards contain significant unobservable inputs or are traded less actively or traded in less-developed markets, and so are classified as level 3. The valuation of such instruments is further discussed in the
internal models based on information other than market data section below.

3. Financial assets and liabilities at fair value through profit or loss
(FVTPL)

Loans and advances to customers

These consist of loans
secured on residential property to housing associations. The fair value of these loans is estimated using the present value model based on a credit curve derived from current market spreads observable in the Social Housing loan data.
Observable market data include current market spreads for new accepted mandates and bids for comparable loans and are used to support or challenge the benchmark level. This provides a range of reasonably possible estimates of fair value. As the
inputs are based on market observable data, these loans are classified as level 2. Certain loans and advances to customers which represent a portfolio of roll-up mortgages contain significant unobservable inputs and so are classified as level 3. The
valuation of such instruments is further discussed below.

Debt securities

These consist of holdings of asset-backed securities. A significant portion of these securities are priced using the present value models, based on observable
market data e.g. LIBOR, credit spreads. Where there are quoted prices, the model value is checked against the quoted prices for reference purposes, but is not used as the fair value as the market for these instruments is lacking in liquidity and
depth. As the inputs are based on observable market data, these debt securities are classified as level 2. Certain debt securities which represent reversionary property securities and securities issued by Banco Santander entities contain significant
unobservable inputs, and so are classified as level 3. The valuation of such instruments is further discussed below.

Debt securities in issue

These include commercial paper, medium-term notes and other bonds and are valued using the same techniques as those instruments in financial assets at FVTPL - debt
securities discussed above. As the inputs used are based on observable market data, these debt securities are classified as level 2. Certain debt securities in issue which represent the more exotic senior debt issuances, consisting of power reverse
dual currency (PRDC) notes contain significant unobservable inputs and so are classified as level 3. The valuation of such instruments is further discussed below.

Structured deposits

These consist of certain structured term deposits utilised
and managed as part of the funding requirements of the trading book. These instruments are valued using the same techniques as those instruments in trading assets - loans and advances to banks and loans and advances to customers discussed above. As
the inputs are based on observable market data, these deposits are classified as level 2.

4. Available-for-sale financial assets

Equity securities

These consist of unquoted equity investments in companies
providing infrastructure services to the financial services industry and a small portfolio held within the Santander UK Foundation (which is consolidated by the Santander UK group). In the valuation of equity financial instruments requiring dynamic
hedging, proprietary local volatility and stochastic volatility models are used. These types of models are widely accepted in the financial services industry. Observable market inputs used in these models include the bid-offer spread, foreign
currency exchange rates, volatility and correlation between indices. As the inputs are based on observable market data, these equity securities are classified as level 2.

Debt securities

These consist of certain asset backed securities where quoted
market prices are not available, for which valuation techniques are used to determine fair value and where these techniques use inputs that are based significantly on observable market data.





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| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements







i)
Internal models based on information other than market data (Level 3)

The table below provides an analysis of financial instruments valued using internal
models based on information other than market data together with the subsequent valuation technique used for each type of instrument. Each instrument is initially valued at transaction price:



|                           |  |                                 |     |                                       |  |                     |      |  |                                                 |  |      |      |  |  |      |  |  |      |      |  |  |  |      | 
|-------------------------- |  | ------------------------------- | --- | ------------------------------------- |  | ------------------- | ---- |  | ----------------------------------------------- |  | ---- | ---- |  |  | ---- |  |  | ---- | ---- |  |  |  | ---- | 
|                           |  |                                 |     |                                       |  | Balance sheet
value |      |  | Fair value movements recognisedin profit/(loss) | 
|                           |  |                                 |     |                                       |  | 2016                |      |  | 2015                                            |  |      | 2016 |  |  | 2015 |  |  | 2014 |     
|Balance sheet line item    |  | Category                        |     | Financial instrument product type     |  | £m                  |      |  | £m                                              |  |      | £m   |  |  | £m   |  |  | £m   |     
|1. Derivative assets       |  | Exchange rate contracts         |     | Cross-currency swaps                  |  |                     | 1    |  |                                                 |  | -    |      |  |  | 1    |  |  |      | 3    |  |  |  | (1)  | 
|2. Derivative assets       |  | Exchange rate contracts         |     | Securitisation cross currency swaps   |  |                     | 21   |  |                                                 |  | 55   |      |  |  | 12   |  |  |      | -    |  |  |  | -    | 
|3. Derivative assets       |  | Interest rate contracts         |     | Bermudan swaptions                    |  |                     | 7    |  |                                                 |  | 10   |      |  |  | (3)  |  |  |      | (9)  |  |  |  | (5)  | 
|4. Derivative assets       |  | Interest rate contracts         |     | Securitisation swaps                  |  |                     | 12   |  |                                                 |  | 8    |      |  |  | -    |  |  |      | -    |  |  |  | -    | 
|5. Derivative assets       |  | Equity and credit contracts     |     | Reversionary property interests       |  |                     | 36   |  |                                                 |  | 81   |      |  |  | 12   |  |  |      | 2    |  |  |  | 18   | 
|6. Derivative assets       |  | Credit contracts                |     | Credit default swaps                  |  |                     | 5    |  |                                                 |  | 4    |      |  |  | 1    |  |  |      | (2)  |  |  |  | (7)  | 
|7. Derivative assets       |  | Equity contracts                |     | Property-related options and forwards |  |                     | 21   |  |                                                 |  | 30   |      |  |  | (5)  |  |  |      | (4)  |  |  |  | (11) | 
|8. FVTPL                   |  | Loans and advances to customers |     | Roll-up mortgage portfolio            |  |                     | 63   |  |                                                 |  | 59   |      |  |  | 4    |  |  |      | 2    |  |  |  | 15   | 
|9. FVTPL                   |  | Debt securities                 |     | Reversionary property securities      |  |                     | 201  |  |                                                 |  | 208  |      |  |  | -    |  |  |      | 17   |  |  |  | 36   | 
|10. AFS                    |  | Equity securities               |     | Unlisted equity shares                |  |                     | 32   |  |                                                 |  | 100  |      |  |  | -(1) |  |  |      | -(1) |  |  |  | -    | 
|11. Derivative liabilities |  | Exchange rate contracts         |     | Securitisation cross currency swaps   |  |                     | (21) |  |                                                 |  | (55) |      |  |  | (12) |  |  |      | -    |  |  |  | -    | 
|12. Derivative liabilities |  | Interest rate contracts         |     | Bermudan swaptions                    |  |                     | (2)  |  |                                                 |  | (4)  |      |  |  | 2    |  |  |      | -    |  |  |  | 4    | 
|13. Derivative liabilities |  | Interest rate contracts         |     | Securitisation swaps                  |  |                     | (9)  |  |                                                 |  | (6)  |      |  |  | -    |  |  |      | -    |  |  |  | -    | 
|14. Derivative liabilities |  | Equity contracts                |     | Property-related options and forwards |  |                     | (42) |  |                                                 |  | (40) |      |  |  | (5)  |  |  |      | (3)  |  |  |  | (11) | 
|15. FVTPL                  |  | Debt securities in issue        |     | Non-vanilla debt securities           |  |                     | (6)  |  |                                                 |  | (5)  |      |  |  | -    |  |  |      | (4)  |  |  |  | 1    | 
|Total net assets           |  |                                 | 319 |                                       |  |                     | 445  |  |                                                 |  |      |      |  |  |      |  |  |      |      | 
|Total income               |  |                                 |     |                                       |  |                     |      |  |                                                 |  |      |      |  |  | 7    |  |  |      | 2    |  |  |  | 39   | 

|(1) | Gains and losses arising from changes in the fair value of securities classified as available-forsale are recognised in other comprehensive income.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------

Valuation techniques

1. Derivative assets - Exchange rate contracts

These are used to hedge the foreign currency risks arising from the PRDC notes issued, as described in Instrument 15 below. These derivatives are valued using a
standard valuation model valuing each leg of the swap, with expected future cash flows less notional amount exchanged at maturity date discounted using an appropriate floating rate. The floating rate is adjusted by the relevant cross currency basis
spread. Interest rates, foreign exchange rates, cross currency basis spread and long-dated foreign exchange (FX) volatility are used as inputs to determine fair value. Interest rates, foreign exchange rates are market observable.

Cross currency spreads may be market observable or unobservable depending on the liquidity of the cross currency pair. As the Japanese Yen-US dollar cross currency pair
related to the PRDC notes is liquid, the cross currency spreads (including long-dated cross currency spread) for these swaps are market observable. The significant unobservable inputs are the long-dated FX volatility and the correlation between the
underlying assets. The correlation between the underlying assets is assumed to be zero, as there are no actively traded options from which correlations between the underlying assets could be implied. Furthermore, the zero correlation assumption
implies that the sources of the long-dated FX volatility are independent.

Long-dated FX volatility -Long-dated FX volatility is extrapolated from
shorter-dated FX volatilities which are market observable. Short-dated FX volatility is observable from the trading of FX options. As there is no active market for FX options with maturities greater than five years (long-dated FX options),
long-dated FX volatility is not market observable. Furthermore, as historical prices are not relevant in determining the cost of hedging long-dated FX risk, long-dated FX volatility cannot be inferred from historical volatility. The long-dated FX
volatility is extrapolated from the shorter-dated FX volatilities using Blacks model.

FX volatility is modelled as the composition of the domestic interest
rate, foreign interest rates and FX spot volatilities using standard Hull-White formulae. The Hull-White approach is used for estimating the future distribution of domestic and foreign zero-coupon rates, constructed from the relevant yield curves.
Using short-dated FX options, the FX spot volatility is calculated which is then extrapolated to derive the long-dated FX volatility.

2. Derivative assets -
Exchange rate contracts

These are securitisation based swaps for which the notional amount is adjusted to match the changes in the outstanding reference mortgage
portfolio with time. These swap are valued using a standard valuation model for which the main inputs used are market observable information in the vanilla swap market and a prepayment parameter. The significant unobservable input for the valuation
of these financial instruments is prepayment.

Prepayment - This captures the prepayment, default and arrears of the reference portfolio and is modelled using
an analysis of the underlying portfolio plus observed historical market data.

3. Derivative assets - Interest rate contracts

These are options giving the holder the right to enter into an interest rate swap on any one of a number of predetermined dates. These Bermudan swaptions are valued using
a standard valuation model. In valuing the Bermudan swaptions, the main inputs used are market observable information in the vanilla swaption market and a mean reversion parameter. The significant unobservable input for the valuation of these
financial instruments is mean reversion.

Mean reversion -The input used reflects the level of de-correlation in the swaption market. This parameter is not
directly observable in the market but can be deduced from broker quotes or using expert judgement. An adjustment is made to reflect this uncertainty by stressing the parameter.

4. Derivative assets - Interest rate contracts

These derivatives are the same
as Instrument 2.





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5. Derivative assets - Equity and credit contracts

These are valued using a
probability weighted set of HPI forward prices, which are assumed to be a reasonable representation of the increase in value of the Santander UK groups reversionary interest portfolio underlying the derivatives. The probability used reflects
the likelihood of the home owner vacating the property and is calculated from mortality rates and acceleration rates which are a function of age and gender, obtained from the relevant mortality tables. Indexing is felt to be appropriate due to the
size and geographical dispersion of the reversionary interest portfolio. These are determined using HPI Spot Rates adjusted to reflect estimated forward growth. The Halifaxs UK HPI is the UKs longest running monthly house price data
series covering the whole country. The indices calculated are standardised and represent the price of a typically transacted house. Both national and regional HPI are published. The national HPI is published monthly. The regional HPI reflects the
national HPI disaggregated into 12 UK regions and is published quarterly. Both indices are published on two bases, including and excluding seasonal adjustments in the housing market. Non-seasonally adjusted (NSA) national and regional HPI are used
in the valuation model to avoid any subjective judgement in the adjustment process which is made by Halifax.

The inputs used to determine the value of the
reversionary property derivatives are HPI spot, HPI forward growth and mortality rates. The principal pricing parameter is HPI forward growth.

HPI Spot Rate -The HPI spot rate used is a weighted average of NSA regional HPI spot rates i.e. adjusted for difference in the actual regional composition of the property underlying the reversionary interest portfolio and the composition of the published
regional indices. The regional HPI spot rate (which is observable market data) is only published on specific quarterly dates. In between these dates, its value is estimated by applying the growth rate over the relevant time period inferred from the
national HPI spot rates (which are observable market data and published monthly) to the most recently calculated weighted average regional HPI spot rate based on published regional indices. An adjustment is also made to reflect the specific property
risk i.e. possible deviation between the actual growth in the house prices underlying the reversionary interest portfolio and their assumed index-linked growth, which is based on the regional HPI. This adjustment is based on the average historical
deviation of price changes of the actual property portfolio from that of the published indices over the time period since the last valuation date.

HPI Forward
Growth Rate - Long-dated HPI forward growth rate is not directly observable in the market but is estimated from broker quotes and traded forward contracts. A specific spread is applied to the long-dated forward growth rate to reflect the
uncertainty surrounding long-dated data. This spread is calculated by analysing the historical volatility of the HPI, whilst incorporating mean reversion. An adjustment is made to reflect the specific property risk as for the HPI spot rate above.

Mortality Rate - Mortality rates are obtained from tables published by the UK Institute and Faculty of Actuaries. These mortality rates are adjusted by
acceleration rates to reflect the mortality profile of the holders of Santander UK groups reversionary property products underlying the derivatives. Mortality rates do not have a significant effect on the value of the instruments.

6. Derivative assets - Credit contracts

These are credit default swaps held
against certain bonds. The credit default swaps are valued using the credit spreads of the referenced bonds. These referenced bonds are valued with the assistance of valuations prepared by an independent, specialist valuation firm as a deep and
liquid market does not exist. In valuing the credit default swaps, the main inputs used to determine the underlying cost of credit are quoted risk premiums and the correlation between the quoted credit derivatives of various issuers. The assumptions
relating to the correlation between the values of quoted and unquoted assets are based on historical correlations between the impact of adverse changes in market variables and the corresponding valuation of the associated unquoted assets. The
measurement of the assets will vary depending on whether a more or less conservative scenario is selected. The other main input is the probability of default of the referenced bonds. The significant unobservable input for the valuation of these
financial instruments is the probability of default.

Probability of default -The probability of default is assessed by considering the credit quality of the
underlying referenced bonds. However, as no deep and liquid market exists for these assets the assessment of the probability of default is not directly observable and instead an estimate is calculated using the Standard Gaussian Copula model.

7. Derivative assets - Equity contracts

There are three types of
derivatives within this category:

European options  These are valued using a modified Black-Scholes model where the HPI is log-normally distributed
with the forward rates determined from the HPI forward growth.

Asian options  Asian (or average value) options are valued using a modified
Black-Scholes model, with an amended strike price and volatility assumption to account for the average exercise period, through a closed form adjustment that reflects the strike price relative to the distribution of stock prices at each relevant
date. This is also known as the Curran model.

Forward contracts  Forward contracts are valued using a standard forward pricing model.

The inputs used to determine the value of the above instruments are HPI spot rate, HPI forward growth rate and HPI volatility. The principal pricing parameter is HPI
forward growth rate.

HPI Spot Rate -The HPI spot rate used is the NSA national HPI spot rate which is published monthly and directly observable in the
market. This HPI rate used is different from the weighted average regional HPI spot rate used in the valuation of Instrument 5 above, as the underlying of these derivatives is the UK national HPI spot rate.

HPI Forward Growth Rate -The HPI forward growth rate used is unobservable and is the same as used in the valuation of Instrument 5 above.

HPI Volatility -Long-dated HPI volatility is not directly observable in the market but is estimated from the most recent traded values. An adjustment is applied
to the long-dated HPI volatility rate to reflect the uncertainty surrounding long-dated data. This adjustment is based on the empirical standard deviation of historical volatility over a range of time horizons. HPI volatility rates do not have a
significant effect on the value of the instruments.





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| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements







8. FVTPL  Loans and
advances to customers

These represent roll-up mortgages (sometimes referred to as lifetime mortgages), which are an equity release scheme under which a property
owner takes out a loan secured against their home. The owner does not make any interest payments during their lifetime and the fixed interest payments are rolled up into the mortgage. The loan or mortgage (capital and rolled-up interest) is repaid
upon the owners vacation of the property and the value of the loan is only repaid from the value of the property. This is known as a no negative pledge. The Santander UK group suffers a loss if the sale proceeds from the property
are insufficient to repay the loan, as it is unable to pursue the homeowners estate or beneficiaries for the shortfall.

The value of the mortgage rolls
up or accretes until the owner vacates the property. In order to value the roll-up mortgages, the Santander UK group uses a probability-weighted set of European option prices (puts) determined using the Black-Scholes model, in which the
no negative pledges are valued as short put options. The probability weighting applied is calculated from mortality rates and acceleration rates as a function of age and gender, taken from mortality tables.

The inputs used to determine the value of these instruments are HPI spot, HPI forward growth, HPI volatility, mortality rates and repayment rates. The principal pricing
parameter is HPI forward growth. The HPI forward growth rate used is unobservable and is the same as used in the valuation of Instrument 5 above. The other parameters do not have a significant effect on the value of the instruments.

9. FVTPL  Debt securities

These consisting of reversionary property
securities are an equity release scheme, where the property owner receives an upfront lump sum in return for paying a fixed percentage of the sales proceeds of the property when the owner vacates the property. These reversionary property securities
are valued using a probability-weighted set of HPI forward prices which are assumed to be a reasonable representation of the increase in value of the Santander UK groups reversionary interest portfolio underlying the derivatives. The
probability weighting used reflects the probability of the home owner vacating the property through death and is calculated from death rates and acceleration factors which are a function of age and gender, obtained from the relevant mortality table.

The inputs used to determine the value of these instruments are HPI spot, HPI forward growth and mortality rates. The principal pricing parameter is HPI forward
growth. Discussion of the HPI spot rate, HPI forward growth rate and mortality rates for this financial instrument is the same as Instrument 5 above. An adjustment is also made to reflect the specific property risk. Discussion of the specific
property risk adjustment is the same as Instrument 5 above.

10. Available-for-sale financial assets  Equity securities

These consist of unquoted equity investments in companies providing infrastructure services to the financial services industry. In the valuation of equity financial
instruments requiring dynamic hedging, proprietary local volatility and stochastic volatility models are used. These types of models are widely accepted in the financial services industry.

Observable market inputs used in these models include equity prices, bid-offer spread, foreign currency exchange rates. The significant unobservable input is contingent
litigation costs and related expenses.

Litigation costs and related expenses are estimated by reference to best estimates received from third party legal
counsel.

11. Derivative liabilities - Exchange rate contracts

These
derivatives are the same as Instrument 2 with the exception that they have a negative fair value.

12. Derivative liabilities - Interest rate contracts

These derivatives are the same as Instrument 3 with the exception that they have a negative fair value.

13. Derivative liabilities - Interest rate contracts

These derivatives are the
same as Instrument 2 with the exception that they have a negative fair value.

14. Derivative liabilities - Equity contracts

These derivatives are the same as Instrument 7 with the exception that they have a negative fair value.

15. FVTPL - Debt securities in issue

These are PRDC notes. These notes are
financial structured products where an investor is seeking a better return and a borrower/issuer a lower rate by taking advantage of the interest rate differential between two countries. The note pays a foreign interest rate in the investors
domestic currency. The power component of the name denotes higher initial coupons and the fact that coupons rise as the domestic/foreign exchange rate depreciates. The power feature comes with a higher risk for the investor. Cash flows may have a
digital cap feature where the rate gets locked once it reaches a certain threshold. Other add-on features are barriers such as knockouts and cancellation provisions for the issuer.

These debt securities in issue are valued using a three-factor Gaussian Model. The three factors used in the valuation are domestic interest rates, foreign interest
rates and foreign exchange rates. The correlations between the factors are assumed to be zero within the valuation. The Hull-White approach is used for estimating the future distribution of domestic and foreign zero-coupon rates, constructed from
the relevant yield curves. A Geometric Brownian Motion model is used for estimating the future distribution of spot foreign exchange rates. The foreign exchange and interest rate volatilities are the most crucial pricing parameters; the model
calibrates to the relevant swaption volatility surface.

The significant unobservable inputs for the valuation of these financial instruments are the long dated FX
volatility and the correlation between the underlying assets and are the same as Instrument 1.





Santander UK plc261



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##### Table of Contents



Annual Report 2016

Financial
statements









Reconciliation of fair value measurements in Level 3 of the fair value hierarchy

The following table provides a reconciliation of the movement between opening and closing balances of Level 3 financial instruments, measured at fair value using a
valuation technique with significant unobservable inputs:



|                                                                                                          |  |             |      |  |                       |  |      |                    |  |  |       |  |  |  |       |  |             |  |  |                       |  |  |       |  |  |  |      |  |  |  |       | 
|--------------------------------------------------------------------------------------------------------- |  | ----------- | ---- |  | --------------------- |  | ---- | ------------------ |  |  | ----- |  |  |  | ----- |  | ----------- |  |  | --------------------- |  |  | ----- |  |  |  | ---- |  |  |  | ----- | 
|                                                                                                          |  | Assets      |      |  |                       |  |      | Liabilities        | 
|                                                                                                          |  | Derivatives |      |  | Fair valuethrough P&L |  |      | Available-for-sale |  |  | Total |  |  |  |       |  | Derivatives |  |  | Fair valuethrough P&L |  |  | Total | 
|                                                                                                          |  | £m          |      |  | £m                    |  |      | £m                 |  |  | £m    |  |  |  |       |  | £m          |  |  | £m                    |  |  | £m    | 
|At 1 January 2016                                                                                         |  |             | 188  |  |                       |  | 267  |                    |  |  | 100   |  |  |  | 555   |  |             |  |  |                       |  |  | (105) |  |  |  | (5)  |  |  |  | (110) | 
|Total gains/(losses) recognised in profit/(loss):                                                         |  |             |      |  |                       |  |      |                    |  |  |       |  |  |  |       |  |             |  |  |                       |  |  |       | 
|- Fair value movements                                                                                    |  |             | 18   |  |                       |  | 4    |                    |  |  | -     |  |  |  | 22    |  |             |  |  |                       |  |  | (15)  |  |  |  | -    |  |  |  | (15)  | 
|- Foreign exchange and other movements                                                                    |  |             | (32) |  |                       |  | -    |                    |  |  | -     |  |  |  | (32)  |  |             |  |  |                       |  |  | 32    |  |  |  | (1)  |  |  |  | 31    | 
|Gains recognised in other comprehensive income                                                            |  |             | -    |  |                       |  | -    |                    |  |  | 26    |  |  |  | 26    |  |             |  |  |                       |  |  | -     |  |  |  | -    |  |  |  | -     | 
|Transfers in                                                                                              |  |             | -    |  |                       |  | -    |                    |  |  | -     |  |  |  | -     |  |             |  |  |                       |  |  | -     |  |  |  | -    |  |  |  | -     | 
|Transfers out                                                                                             |  |             | -    |  |                       |  | -    |                    |  |  | -     |  |  |  | -     |  |             |  |  |                       |  |  | -     |  |  |  | -    |  |  |  | -     | 
|Additions                                                                                                 |  |             | 4    |  |                       |  | -    |                    |  |  | 25    |  |  |  | 29    |  |             |  |  |                       |  |  | (3)   |  |  |  | -    |  |  |  | (3)   | 
|Sales                                                                                                     |  |             | -    |  |                       |  | (7)  |                    |  |  | (119) |  |  |  | (126) |  |             |  |  |                       |  |  | -     |  |  |  | -    |  |  |  | -     | 
|Settlements                                                                                               |  |             | (75) |  |                       |  | -    |                    |  |  | -     |  |  |  | (75)  |  |             |  |  |                       |  |  | 17    |  |  |  | -    |  |  |  | 17    | 
|At 31 December 2016                                                                                       |  |             | 103  |  |                       |  | 264  |                    |  |  | 32    |  |  |  | 399   |  |             |  |  |                       |  |  | (74)  |  |  |  | (6)  |  |  |  | (80)  | 
|                                                                                                          |  |             |      |  |                       |  |      |                   
|Gains/(losses) recognised in profit/(loss) relating to assets and liabilities held at the end of the year |  |             | (14) |  |                       |  | 4    |                    |  |  | -     |  |  |  | (10)  |  |             |  |  |                       |  |  | 17    |  |  |  | (1)  |  |  |  | 16    | 
|                                                                                                          |  |             |      |  |                       |  |      |                    |  |  |       |  |  |  |       |  |             |  |  |                       |  |  |       |  |  |  |      |  |  |  |       | 
|At 1 January 2015                                                                                         |  |             | 152  |  |                       |  | 281  |                    |  |  | -     |  |  |  | 433   |  |             |  |  |                       |  |  | (51)  |  |  |  | (13) |  |  |  | (64)  | 
|Total gains/(losses) recognised in profit/(loss):                                                         |  |             |      |  |                       |  |      |                    |  |  |       |  |  |  |       |  |             |  |  |                       |  |  |       |  |  |  |      |  |  |  |       | 
|- Fair value movements                                                                                    |  |             | (10) |  |                       |  | 19   |                    |  |  | -     |  |  |  | 9     |  |             |  |  |                       |  |  | (3)   |  |  |  | (4)  |  |  |  | (7)   | 
|Gains recognised in other comprehensive income                                                            |  |             | -    |  |                       |  | -    |                    |  |  | 100   |  |  |  | 100   |  |             |  |  |                       |  |  | -     |  |  |  | -    |  |  |  | -     | 
|Transfers in                                                                                              |  |             | 63   |  |                       |  | -    |                    |  |  | -     |  |  |  | 63    |  |             |  |  |                       |  |  | (61)  |  |  |  | -    |  |  |  | (61)  | 
|Settlements                                                                                               |  |             | (17) |  |                       |  | (33) |                    |  |  | -     |  |  |  | (50)  |  |             |  |  |                       |  |  | 10    |  |  |  | 12   |  |  |  | 22    | 
|At 31 December 2015                                                                                       |  |             | 188  |  |                       |  | 267  |                    |  |  | 100   |  |  |  | 555   |  |             |  |  |                       |  |  | (105) |  |  |  | (5)  |  |  |  | (110) | 
|                                                                                                          |  |             |      |  |                       |  |      |                   
|Gains/(losses) recognised in profit/(loss) relating to assets and liabilities held at the end of the year |  |             | (10) |  |                       |  | 19   |                    |  |  | -     |  |  |  | 9     |  |             |  |  |                       |  |  | (3)   |  |  |  | (4)  |  |  |  | (7)   | 

Total gains or losses are included in Net trading and other income (see Note 5).

2016 compared to 2015

Financial instrument assets valued using internal
models based on information other than market data were 0.6% (2015: 1.0%) of total assets measured at fair value and 0.1% (2015: 0.2%) of total assets at 31 December 2016.

Financial instrument liabilities valued using internal models based on information other than market data were 0.2% (2015: 0.3%) of total liabilities measured at fair
value and 0.03% (2015: 0.04%) of total liabilities at 31 December 2016.

Losses of £14m in respect of derivative assets principally reflected changes in
credit spreads and the HPI index, and yield curve movements. Gains of £4m in respect of assets designated at fair value through profit or loss principally reflected the mark-to-market volatility on the reversionary property securities arising
from a continued low interest rate environment, changes in the HPI index and a maturing portfolio. Gains of £17m in respect of derivative liabilities principally reflected changes in credit spreads and the HPI index. Losses of £1m in
respect of liabilities designated at fair value through profit or loss principally reflected yield curve movements. They are fully matched with derivatives.

2015
compared to 2014

Financial instrument assets valued using internal models based on information other than market data were 1.0% (2014: 0.8%) of total assets
measured at fair value and 0.2% (2014: 0.2%) of total assets at 31 December 2015.

Financial instrument liabilities valued using internal models based on
information other than market data were 0.3% (2014: 0.2%) of total liabilities measured at fair value and 0.04% (2014: 0.02%) of total liabilities at 31 December 2015.

Losses of £10m in respect of derivative assets principally reflected changes in credit spreads and the HPI index, and yield curve movements. Gains of £19m in
respect of assets designated at fair value through profit or loss principally reflected the mark-to-market volatility on the reversionary property securities arising from a continued low interest rate environment, changes in the HPI index and a
maturing portfolio. Losses of £3m in respect of derivative liabilities principally reflected changes in credit spreads and the HPI index. Losses of £4m in respect of liabilities designated at fair value through profit or loss principally
reflected yield curve movements. They are fully matched with derivatives.





262Santander UK plc



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##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements







Effect of changes in
significant unobservable assumptions to reasonably possible alternatives (Level 3)

As discussed above, the fair value of financial instruments are, in certain
circumstances, measured using valuation techniques that incorporate assumptions that are not evidenced by prices from observable current market transactions in the same instrument and are not based on observable market data and, as such require the
application of a degree of judgement. Changing one or more of the inputs to the valuation models to reasonably possible alternative assumptions would change the fair values significantly. The following table shows the sensitivity of these fair
values to reasonably possible alternative assumptions.

Favourable and unfavourable changes are determined on the basis of changes in the value of the instrument as
a result of varying the levels of the unobservable input as described in the table below.



|                                                                                        |  |              |          |  |                                |                                       |                  |  |          |  |             |  |                      |  |  |                        |       |  |  |  |      |     |  |  |          |    
|--------------------------------------------------------------------------------------- |  | ------------ | -------- |  | ------------------------------ | ------------------------------------- | ---------------- |  | -------- |  | ----------- |  | -------------------- |  |  | ---------------------- | ----- |  |  |  | ---- | --- |  |  | -------- | ---
|2016                                                                                    |  |              |          |  | Significant unobservable input |                                       |                  |  |          |  | Sensitivity | 
|Balance sheet note line item and product                                                |  | Fairvalue
£m |          |  | Assumption description         |                                       | Assumption value |  |          |  |             |  | Favourablechanges
£m |  |  | Unfavourablechanges
£m |      
|                                                                                        |  |              | Range(1) |  |                                | Weightedaverage                       |                  |  | Shift    |  |             | 
|3. Derivative assets  Interest rate
contracts:  Bermudan swaptions                    |  |              | 7        |  |                                | Mean reversion                        |                  |  | (2)%-2%  |  |             |  | 0%                   |  |  |                        | (2)%  |  |  |  | 1    |     |  |  | (1)      |    
|5. Derivative assets  Equity and credit contracts:
 Reversionary property derivatives |  |              | 36       |  |                                | HPI Forward growth rate
HPI Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.79%748(2)          |  |  |                        | 1%10% |  |  |  | 119  |     |  |  | (11)(9)  |    
|6. Derivative assets  Credit contracts:
 Credit default swaps                         |  |              | 5        |  |                                | Probability of default                |                  |  | 0%-5%    |  |             |  | 0.39%                |  |  |                        | 20%   |  |  |  | 1    |     |  |  | (1)      |    
|7. Derivative assets  Equity contracts:
 Property-related options and forwards        |  |              | 21       |  |                                | HPI Forward growth rate HPI
Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.71%702(2)          |  |  |                        | 1%10% |  |  |  | 11   |     |  |  | (1)(1)   |    
|8. FVTPL  Loans and advances to customers:
 Roll-up mortgage portfolio                |  |              | 63       |  |                                | HPI Forward growth rate               |                  |  | 0%-5%    |  |             |  | 2.84%                |  |  |                        | 1%    |  |  |  | 2    |     |  |  | (2)      |    
|9. FVTPL  Debt securities:
 Reversionary property securities                          |  |              | 201      |  |                                | HPI Forward growth rate HPI
Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.79%748(2)          |  |  |                        | 1%10% |  |  |  | 1218 |     |  |  | (12)(18) |    
|10. AFS  Equity securities:
 Unlisted equity shares                                   |  |              | 32       |  |                                | Contingent litigation risk            |                  |  | 0%-100%  |  |             |  | 48%                  |  |  |                        | 20%   |  |  |  | 7    | (3) |  |  | (7)      | (3)
|12. Derivative liabilities  Interest rate contracts:
 Bermudan swaptions              |  |              | (2)      |  |                                | Mean reversion                        |                  |  | (2)%-2%  |  |             |  | 0%                   |  |  |                        | (2)%  |  |  |  | 1    |     |  |  | (1)      |    
|14. Derivative liabilities  Equity contracts:
 Property-related options and forwards  |  |              | (42)     |  |                                | HPI Forward growth rate HPI
Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.71%702(2)          |  |  |                        | 1%10% |  |  |  | 48   |     |  |  | (4)(9)   |    
|2015                                                                                    | 
|3. Derivative assets  Interest rate
contracts:  Bermudan swaptions                    |  |              | 10       |  |                                | Mean reversion                        |                  |  | 0%-4%    |  |             |  | 2%                   |  |  |                        | 1%    |  |  |  | 1    |     |  |  | (1)      |    
|5. Derivative assets  Equity
and credit contracts:  Reversionary property derivatives |  |              | 81       |  |                                | HPI Forward growth rate
HPI Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.65%688(2)          |  |  |                        | 1%10% |  |  |  | 118  |     |  |  | (11)(8)  |    
|6. Derivative assets  Credit
contracts:  Credit default swaps                         |  |              | 4        |  |                                | Probability of default                |                  |  | 0%-2%    |  |             |  | 0.38%                |  |  |                        | 20%   |  |  |  | 1    |     |  |  | (1)      |    
|7. Derivative assets  Equity
contracts:  Options and forwards                         |  |              | 30       |  |                                | HPI Forward growth rate
HPI Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.09%659(2)          |  |  |                        | 1%10% |  |  |  | 12   |     |  |  | (1)(1)   |    
|8. FVTPL  Loans and advances
to customers:  Roll-up mortgage portfolio                |  |              | 59       |  |                                | HPI Forward growth rate               |                  |  | 0%-5%    |  |             |  | 2.79%                |  |  |                        | 1%    |  |  |  | 2    |     |  |  | (2)      |    
|9. FVTPL  Debt
securities:  Reversionary property securities                          |  |              | 208      |  |                                | HPI Forward growth rate
HPI Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.65%688(2)          |  |  |                        | 1%10% |  |  |  | 1419 |     |  |  | (14)(19) |    
|10. AFS  Equity
securities:  Unlisted equity shares                                   |  |              | 100      |  |                                | Contingent litigation risk            |                  |  | 0%-36%   |  |             |  | 18%                  |  |  |                        | 20%   |  |  |  | 5    | (3) |  |  | (5)      | (3)
|12. Derivative liabilities 
Interest rate contracts:  Bermudan swaptions              |  |              | (4)      |  |                                | Mean reversion                        |                  |  | 0%-4%    |  |             |  | 2%                   |  |  |                        | 1%    |  |  |  | 1    |     |  |  | (1)      |    
|14. Derivative liabilities 
Equity contracts:  Options and forwards                   |  |              | (40)     |  |                                | HPI Forward growth rate
HPI Spot rate |                  |  | 0%-5%n/a |  |             |  | 2.09%659(2)          |  |  |                        | 1%10% |  |  |  | 513  |     |  |  | (5)(13)  |    

|(1) | The range of actual assumption values used to calculate the weighted average disclosure.
|--- | ----------------------------------------------------------------------------------------

|(2) | Represents the HPI spot rate index level at 31 December 2016 and 2015.
|--- | ----------------------------------------------------------------------

|(3) | Gains and losses arising from changes in the fair value of securities classified as available-for-sale are recognised in other comprehensive income; for all other assets and liabilities shown in the tables above, gains
and losses arising from changes in their fair value are recognised in the income statement.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

No sensitivities are presented for Derivative assets
 cross currency swaps (instrument 1), Derivative assets  securitisation cross currency swaps (instrument 2), Derivative assets securitisation swaps (instrument 4) and the FVTPL-debt securities in issue (instrument 15) and related
exchange rate and interest rate derivatives (instruments 1, 11 and 13) as the terms of these instruments are fully matched. As a result, any changes in the valuation of the debt securities in issue would be exactly offset by an equal and opposite
change in the valuation of the exchange rate derivatives.





Santander UK plc263



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##### Table of Contents



Annual Report 2016

Financial
statements









j) Maturities of financial assets, liabilities and off-balance sheet commitments

The table below analyses the maturities of the undiscounted cash flows relating to financial liabilities and off-balance sheet commitments of the Santander UK group
based on the remaining period to the contractual maturity date at the balance sheet date. Deposits by customers largely consist of retail deposits.

There are no
significant financial liabilities related to financial guarantee contracts. This table is not intended to show the liquidity of the Santander UK group.



|                                          |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|----------------------------------------- |  | ------------ | ------- |  | --------------------------- |  | ------ | ------------------------------------------------ |  |  | ----------------------------------------------- |  |  | ----------------------- | ------ |  | -------- |  | ------- |  |  |  | ------- | 
|                                          |  |              |         |  | Group                       | 
|2016                                      |  | On demand
£m |         |  | In no more
than 3 months £m |  |        | In more than 3 months butnot more than 1
year £m |  |  | In more than 1 year but notmore
than 5 years £m |  |  | In more than
5 years £m |        |  | Total
£m | 
|Assets                                    |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Cash and balances at central banks        |  |              | 16,737  |  |                             |  | -      |                                                  |  |  | 370                                             |  |  |                         | -      |  |          |  | -       |  |  |  | 17,107  | 
|Trading assets                            |  |              | 12,241  |  |                             |  | 7,828  |                                                  |  |  | 7,933                                           |  |  |                         | 838    |  |          |  | 1,326   |  |  |  | 30,166  | 
|Derivative financial instruments          |  |              | 2,405   |  |                             |  | 739    |                                                  |  |  | 1,416                                           |  |  |                         | 5,958  |  |          |  | 16,177  |  |  |  | 26,695  | 
|Financial assets designated at FVTPL      |  |              | -       |  |                             |  | 24     |                                                  |  |  | 20                                              |  |  |                         | 80     |  |          |  | 2,164   |  |  |  | 2,288   | 
|Loans and advances to banks               |  |              | 1,200   |  |                             |  | 1,073  |                                                  |  |  | 265                                             |  |  |                         | 1,541  |  |          |  | 309     |  |  |  | 4,388   | 
|Loans and advances to customers           |  |              | 1,273   |  |                             |  | 6,995  |                                                  |  |  | 6,220                                           |  |  |                         | 29,124 |  |          |  | 169,172 |  |  |  | 212,784 | 
|Loans and receivables securities          |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | -      |  |          |  | 276     |  |  |  | 276     | 
|Available-for-sale securities             |  |              | -       |  |                             |  | 128    |                                                  |  |  | 494                                             |  |  |                         | 4,388  |  |          |  | 6,066   |  |  |  | 11,076  | 
|Held-to-maturity investments              |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | -      |  |          |  | 7,128   |  |  |  | 7,128   | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | 13     |                                                  |  |  | 51                                              |  |  |                         | 286    |  |          |  | 810     |  |  |  | 1,160   | 
|Total financial assets                    |  |              | 33,856  |  |                             |  | 16,800 |                                                  |  |  | 16,769                                          |  |  |                         | 42,215 |  |          |  | 203,428 |  |  |  | 313,068 | 
|                                          |  |              |         |  |                             | 
|Liabilities                               |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Deposits by banks                         |  |              | 2,366   |  |                             |  | 916    |                                                  |  |  | 677                                             |  |  |                         | 5,833  |  |          |  | 96      |  |  |  | 9,888   | 
|Deposits by customers                     |  |              | 145,810 |  |                             |  | 4,996  |                                                  |  |  | 13,420                                          |  |  |                         | 11,077 |  |          |  | 2,390   |  |  |  | 177,693 | 
|Trading liabilities                       |  |              | 3,535   |  |                             |  | 10,042 |                                                  |  |  | 21                                              |  |  |                         | 602    |  |          |  | 1,474   |  |  |  | 15,674  | 
|Derivative financial instruments:         |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|- Held for trading                        |  |              | 41      |  |                             |  | 904    |                                                  |  |  | 1,569                                           |  |  |                         | 4,352  |  |          |  | 15,494  |  |  |  | 22,360  | 
|- Held for hedging(1)                     |  |              | -       |  |                             |  | 14     |                                                  |  |  | 38                                              |  |  |                         | 575    |  |          |  | 1,357   |  |  |  | 1,984   | 
|Financial liabilities designated at FVTPL |  |              | 9       |  |                             |  | 404    |                                                  |  |  | 229                                             |  |  |                         | 1,117  |  |          |  | 759     |  |  |  | 2,518   | 
|Debt securities in issue                  |  |              | -       |  |                             |  | 9,189  |                                                  |  |  | 7,010                                           |  |  |                         | 21,889 |  |          |  | 14,775  |  |  |  | 52,863  | 
|Subordinated liabilities                  |  |              | -       |  |                             |  | 450    |                                                  |  |  | 554                                             |  |  |                         | 1,739  |  |          |  | 6,054   |  |  |  | 8,797   | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | -      |                                                  |  |  | 19                                              |  |  |                         | 54     |  |          |  | 298     |  |  |  | 371     | 
|Total financial liabilities               |  |              | 151,761 |  |                             |  | 26,915 |                                                  |  |  | 23,537                                          |  |  |                         | 47,238 |  |          |  | 42,697  |  |  |  | 292,148 | 
|                                          |  |              |         |  |                             | 
|Off-balance sheet commitments given       |  |              | 1,692   |  |                             |  | 5,128  |                                                  |  |  | 2,642                                           |  |  |                         | 23,584 |  |          |  | 8,570   |  |  |  | 41,616  | 
|                                          |  |              |         |  |                             | 
|2015                                      |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Assets                                    |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Cash and balances at central banks        |  |              | 16,502  |  |                             |  | -      |                                                  |  |  | 340                                             |  |  |                         | -      |  |          |  | -       |  |  |  | 16,842  | 
|Trading assets                            |  |              | 4,150   |  |                             |  | 6,914  |                                                  |  |  | 4,231                                           |  |  |                         | 907    |  |          |  | 8,872   |  |  |  | 25,074  | 
|Derivative financial instruments          |  |              | -       |  |                             |  | 963    |                                                  |  |  | 1,176                                           |  |  |                         | 5,791  |  |          |  | 15,655  |  |  |  | 23,585  | 
|Financial assets designated at FVTPL      |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | 523    |  |          |  | 2,134   |  |  |  | 2,657   | 
|Loans and advances to banks               |  |              | 1,561   |  |                             |  | 171    |                                                  |  |  | 36                                              |  |  |                         | 1,298  |  |          |  | 516     |  |  |  | 3,582   | 
|Loans and advances to customers           |  |              | 1,243   |  |                             |  | 4,699  |                                                  |  |  | 5,788                                           |  |  |                         | 31,487 |  |          |  | 198,022 |  |  |  | 241,239 | 
|Loans and receivables securities          |  |              | -       |  |                             |  | -      |                                                  |  |  | 2                                               |  |  |                         | -      |  |          |  | 52      |  |  |  | 54      | 
|Available-for-sale securities             |  |              | -       |  |                             |  | 93     |                                                  |  |  | 818                                             |  |  |                         | 3,461  |  |          |  | 5,807   |  |  |  | 10,179  | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | 9      |                                                  |  |  | 14                                              |  |  |                         | 252    |  |          |  | 565     |  |  |  | 840     | 
|Total financial assets                    |  |              | 23,456  |  |                             |  | 12,849 |                                                  |  |  | 12,405                                          |  |  |                         | 43,719 |  |          |  | 231,623 |  |  |  | 324,052 | 
|                                          |  |              |         |  |                             | 
|Liabilities                               |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Deposits by banks                         |  |              | 3,331   |  |                             |  | 1,264  |                                                  |  |  | 1,972                                           |  |  |                         | 1,666  |  |          |  | 112     |  |  |  | 8,345   | 
|Deposits by customers                     |  |              | 130,680 |  |                             |  | 5,736  |                                                  |  |  | 16,571                                          |  |  |                         | 10,960 |  |          |  | 548     |  |  |  | 164,495 | 
|Trading liabilities                       |  |              | 1,559   |  |                             |  | 7,727  |                                                  |  |  | 837                                             |  |  |                         | 976    |  |          |  | 1,880   |  |  |  | 12,979  | 
|Derivative financial instruments:         |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|- Held for trading                        |  |              | 37      |  |                             |  | 1,196  |                                                  |  |  | 1,101                                           |  |  |                         | 3,864  |  |          |  | 14,621  |  |  |  | 20,819  | 
|- Held for hedging(1)                     |  |              | 2       |  |                             |  | 51     |                                                  |  |  | 503                                             |  |  |                         | 1,015  |  |          |  | 1,224   |  |  |  | 2,795   | 
|Financial liabilities designated at FVTPL |  |              | -       |  |                             |  | 466    |                                                  |  |  | 489                                             |  |  |                         | 574    |  |          |  | 525     |  |  |  | 2,054   | 
|Debt securities in issue                  |  |              | -       |  |                             |  | 5,620  |                                                  |  |  | 7,377                                           |  |  |                         | 21,272 |  |          |  | 26,805  |  |  |  | 61,074  | 
|Subordinated liabilities                  |  |              | -       |  |                             |  | 390    |                                                  |  |  | 451                                             |  |  |                         | 1,424  |  |          |  | 5,264   |  |  |  | 7,529   | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | -      |                                                  |  |  | 17                                              |  |  |                         | 11     |  |          |  | 98      |  |  |  | 126     | 
|Total financial liabilities               |  |              | 135,609 |  |                             |  | 22,450 |                                                  |  |  | 29,318                                          |  |  |                         | 41,762 |  |          |  | 51,077  |  |  |  | 280,216 | 
|                                          |  |              |         |  |                             | 
|Off-balance sheet commitments given       |  |              | 663     |  |                             |  | 1,058  |                                                  |  |  | 1,885                                           |  |  |                         | 11,486 |  |          |  | 20,661  |  |  |  | 35,753  | 

|(1) | Comprises the derivative liabilities for which contractual maturities are essential for an understanding of the timing of the cash flows
|--- | ----------------------------------------------------------------------------------------------------------------------------------------





264Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements









|                                          |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|----------------------------------------- |  | ------------ | ------- |  | --------------------------- |  | ------ | ------------------------------------------------ |  |  | ----------------------------------------------- |  |  | ----------------------- | ------ |  | -------- |  | ------- |  |  |  | ------- | 
|                                          |  |              |         |  | Company                     | 
|2016                                      |  | On Demand
£m |         |  | In no more
than 3 months £m |  |        | In more than 3 months butnot more than 1
year £m |  |  | In more than 1 year but notmore
than 5 years £m |  |  | In more than
5 years £m |        |  | Total
£m | 
|Assets                                    |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Cash and balances at central banks        |  |              | 13,261  |  |                             |  | -      |                                                  |  |  | 330                                             |  |  |                         | -      |  |          |  | -       |  |  |  | 13,591  | 
|Derivative financial instruments          |  |              | 7,181   |  |                             |  | 12     |                                                  |  |  | 16                                              |  |  |                         | 104    |  |          |  | 86      |  |  |  | 7,399   | 
|Financial assets designated at FVTPL      |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | 10     |  |          |  | 80      |  |  |  | 90      | 
|Loans and advances to banks               |  |              | 4,247   |  |                             |  | 16,672 |                                                  |  |  | 1,550                                           |  |  |                         | 2,634  |  |          |  | 708     |  |  |  | 25,811  | 
|Loans and advances to customers           |  |              | 866     |  |                             |  | 7,317  |                                                  |  |  | 6,945                                           |  |  |                         | 31,650 |  |          |  | 166,725 |  |  |  | 213,503 | 
|Loans and receivables securities          |  |              | 1       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | -      |  |          |  | 852     |  |  |  | 853     | 
|Available-for-sale securities             |  |              | -       |  |                             |  | 114    |                                                  |  |  | 207                                             |  |  |                         | 4,194  |  |          |  | 6,063   |  |  |  | 10,578  | 
|Held-to-maturity investments              |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | -      |  |          |  | 7,128   |  |  |  | 7,128   | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | 7      |                                                  |  |  | 23                                              |  |  |                         | 131    |  |          |  | 43      |  |  |  | 204     | 
|Total financial assets                    |  |              | 25,556  |  |                             |  | 24,122 |                                                  |  |  | 9,071                                           |  |  |                         | 38,723 |  |          |  | 181,685 |  |  |  | 279,157 | 
|                                          |  |              |         |  |                             | 
|Liabilities                               |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Deposits by banks                         |  |              | 1,725   |  |                             |  | 11,495 |                                                  |  |  | 972                                             |  |  |                         | 5,613  |  |          |  | 24      |  |  |  | 19,829  | 
|Deposits by customers                     |  |              | 142,234 |  |                             |  | 4,888  |                                                  |  |  | 13,257                                          |  |  |                         | 10,993 |  |          |  | 25,560  |  |  |  | 196,932 | 
|Derivative financial instruments:         |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|- Held for trading                        |  |              | 3       |  |                             |  | 48     |                                                  |  |  | 50                                              |  |  |                         | 212    |  |          |  | 2,334   |  |  |  | 2,647   | 
|- Held for hedging(1)                     |  |              | -       |  |                             |  | 2      |                                                  |  |  | 42                                              |  |  |                         | 489    |  |          |  | 462     |  |  |  | 995     | 
|Financial liabilities designated at FVTPL |  |              | -       |  |                             |  | 11     |                                                  |  |  | -                                               |  |  |                         | 185    |  |          |  | 142     |  |  |  | 338     | 
|Debt securities in issue                  |  |              | -       |  |                             |  | 3,375  |                                                  |  |  | 4,175                                           |  |  |                         | 20,980 |  |          |  | 7,354   |  |  |  | 35,884  | 
|Subordinated liabilities                  |  |              | -       |  |                             |  | 560    |                                                  |  |  | 558                                             |  |  |                         | 1,752  |  |          |  | 6,040   |  |  |  | 8,910   | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | -      |                                                  |  |  | 12                                              |  |  |                         | -      |  |          |  | -       |  |  |  | 12      | 
|Total financial liabilities               |  |              | 143,962 |  |                             |  | 20,379 |                                                  |  |  | 19,066                                          |  |  |                         | 40,224 |  |          |  | 41,916  |  |  |  | 265,547 | 
|                                          |  |              |         |  |                             | 
|Off-balance sheet commitments given       |  |              | 1,142   |  |                             |  | 4,388  |                                                  |  |  | 1,932                                           |  |  |                         | 512    |  |          |  | 18,498  |  |  |  | 26,472  | 
|                                          |  |              |         |  |                             | 
|2015                                      |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Assets                                    |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Cash and balances at central banks        |  |              | 14,262  |  |                             |  | -      |                                                  |  |  | 300                                             |  |  |                         | -      |  |          |  | -       |  |  |  | 14,562  | 
|Trading assets                            |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | -      |  |          |  | -       |  |  |  | -       | 
|Derivative financial instruments          |  |              | -       |  |                             |  | 40     |                                                  |  |  | 99                                              |  |  |                         | 590    |  |          |  | 2,951   |  |  |  | 3,680   | 
|Financial assets designated at FVTPL      |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | -      |  |          |  | 68      |  |  |  | 68      | 
|Loans and advances to banks               |  |              | 5,608   |  |                             |  | 8,079  |                                                  |  |  | 3,524                                           |  |  |                         | 1,162  |  |          |  | 639     |  |  |  | 19,012  | 
|Loans and advances to customers           |  |              | 1,096   |  |                             |  | 3,823  |                                                  |  |  | 4,921                                           |  |  |                         | 23,543 |  |          |  | 194,740 |  |  |  | 228,123 | 
|Loans and receivables securities          |  |              | -       |  |                             |  | -      |                                                  |  |  | 236                                             |  |  |                         | 244    |  |          |  | 4,672   |  |  |  | 5,152   | 
|Available-for-sale securities             |  |              | -       |  |                             |  | 93     |                                                  |  |  | 190                                             |  |  |                         | 2,869  |  |          |  | 5,807   |  |  |  | 8,959   | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | -      |                                                  |  |  | (1)                                             |  |  |                         | (30)   |  |          |  | (7)     |  |  |  | (38)    | 
|Total financial assets                    |  |              | 20,966  |  |                             |  | 12,035 |                                                  |  |  | 9,269                                           |  |  |                         | 28,378 |  |          |  | 208,870 |  |  |  | 279,518 | 
|                                          |  |              |         |  |                             | 
|Liabilities                               |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|Deposits by banks                         |  |              | 7,172   |  |                             |  | 7,216  |                                                  |  |  | 4,888                                           |  |  |                         | 7,114  |  |          |  | 1,892   |  |  |  | 28,282  | 
|Deposits by customers                     |  |              | 128,093 |  |                             |  | 6,334  |                                                  |  |  | 17,186                                          |  |  |                         | 10,600 |  |          |  | 29,924  |  |  |  | 192,137 | 
|Derivative financial instruments:         |  |              |         |  |                             |  |        |                                                  |  |  |                                                 |  |  |                         |        |  |          |  |         |  |  |  |         | 
|- Held for trading                        |  |              | 11      |  |                             |  | 148    |                                                  |  |  | 283                                             |  |  |                         | 547    |  |          |  | 1,656   |  |  |  | 2,645   | 
|- Held for hedging(1)                     |  |              | 2       |  |                             |  | 1      |                                                  |  |  | 22                                              |  |  |                         | 242    |  |          |  | 396     |  |  |  | 663     | 
|Debt securities in issue                  |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | -      |  |          |  | -       |  |  |  | -       | 
|Subordinated liabilities                  |  |              | -       |  |                             |  | 456    |                                                  |  |  | 451                                             |  |  |                         | 1,424  |  |          |  | 4,921   |  |  |  | 7,252   | 
|Macro hedge of interest rate risk         |  |              | -       |  |                             |  | -      |                                                  |  |  | -                                               |  |  |                         | (5)    |  |          |  | -       |  |  |  | (5)     | 
|Total financial liabilities               |  |              | 135,278 |  |                             |  | 14,155 |                                                  |  |  | 22,830                                          |  |  |                         | 19,922 |  |          |  | 38,789  |  |  |  | 230,974 | 
|                                          |  |              |         |  |                             | 
|Off-balance sheet commitments given       |  |              | 662     |  |                             |  | 67     |                                                  |  |  | 597                                             |  |  |                         | 1,249  |  |          |  | 18,441  |  |  |  | 21,016  | 

|(1) | Comprises the derivative liabilities for which contractual maturities are essential for an understanding of the timing of the cash flows.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------

As the above table is based on contractual maturities, no account is taken of a customers ability to repay early where it exists or call features related to
subordinated liabilities. The repayment terms of debt securities may be accelerated in line with the covenants described in Note 31. In addition, no account is taken of the possible early repayment of the Santander UK groups mortgage-backed
non-recourse finance which is redeemed by the Santander UK group as funds become available from redemptions of the residential mortgages. The Santander UK group has no control over the timing and amount of redemptions of residential mortgages.





Santander UK plc265



---

##### Table of Contents



Annual Report 2016

Financial
statements









44. OFFSETTING FINANCIAL ASSETS AND LIABILITIES

Financial assets and financial liabilities are reported on a net basis on the balance sheet only if there is a legally enforceable right to set off the recognised
amounts and there is an intention to settle on a net basis, or to realise the asset and settle the liability simultaneously. The following table shows the impact of netting arrangements on:

|- | All financial assets and liabilities that are reported net on the balance sheet
|- | -------------------------------------------------------------------------------

|- | All derivative financial instruments and repurchase agreements and other similar secured lending and borrowing agreements that are subject to enforceable master netting arrangements or similar agreements, but do not
qualify for balance sheet netting.
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The table identifies the amounts that have been offset in the balance sheet and also those amounts that are covered
by enforceable netting arrangements (offsetting arrangements and financial collateral) but do not qualify for netting under the requirements described above.

For
derivative contracts, the Financial instruments column identifies financial assets and liabilities that are subject to set off under netting agreements, such as the ISDA Master Agreement or derivative exchange or clearing counterparty
agreements, whereby all outstanding transactions with the same counterparty can be offset and close-out netting applied across all outstanding transaction covered by the agreements if an event of default or other predetermined events occur.
Financial collateral refers to cash and non-cash collateral obtained, typically daily or weekly, to cover the net exposure between counterparties by enabling the collateral to be realised in an event of default or if other predetermined events
occur.

For repurchase and reverse repurchase agreements and other similar secured lending and borrowing, the Financial instruments column identifies
financial assets and liabilities that are subject to set off under netting agreements, such as global master repurchase agreements and global master securities lending agreements, whereby all outstanding transactions with the same counterparty can
be offset and close-out netting applied across all outstanding transaction covered by the agreements if an event of default or other predetermined events occur. Financial collateral typically comprises highly liquid securities which are legally
transferred and can be liquidated in the event of counterparty default.

The Santander UK group engages in a variety of counterparty credit mitigation strategies in
addition to netting and collateral arrangements. Therefore, the net amounts presented in the tables below do not purport to represent the Santander UK groups actual credit exposure.



|                                                               |  |                                                     |        |  |                  |  |          |                                              |  |  |        |  |  |                        |  |          |                          |  |          |              |  |  |                                                          |       |  |                          |       |     |  |  |         |        |  |  |         | 
|-------------------------------------------------------------- |  | --------------------------------------------------- | ------ |  | ---------------- |  | -------- | -------------------------------------------- |  |  | ------ |  |  | ---------------------- |  | -------- | ------------------------ |  | -------- | ------------ |  |  | -------------------------------------------------------- | ----- |  | ------------------------ | ----- | --- |  |  | ------- | ------ |  |  | ------- | 
|                                                               |  |                                                     |        |  | Group            | 
|                                                               |  | Amounts subject to enforceable netting arrangements |        |  |                  |  |          |                                              | 
|                                                               |  | Effects of offsetting on balance sheet              |        |  |                  |  |          | Related amounts not offset                   |  |  |        |  |  |                        | 
|2016                                                           |  | Grossamounts£m                                      |        |  | Amountsoffset
£m |  |          | Net amounts
reported on the balance
sheet £m |  |  |        |  |  | Financialinstruments£m |  |          | Financialcollateral(1)£m |  |          | Net amount£m |  |  | Assets not subjectto enforceablenettingarrangements(2)£m |       |  | Balance sheettotal(3) £m |      
|Derivative financial assets                                    |  |                                                     | 34,125 |  |                  |  | (8,819)  |                                              |  |  | 25,306 |  |  |                        |  | (17,417) |                          |  |          | (2,384)      |  |  |                                                          | 5,505 |  |                          |       | 165 |  |  |         | 25,471 | 
|Reverse repurchase, securities borrowing
& similar agreements: |  |                                                     |        |  |                  |  |          |                                              |  |  |        |  |  |                        |  |          |                          |  |          |              |  |  |                                                          |       |  |                          |       |     |  |  |         |        |  |  |         | 
|- Trading assets                                               |  |                                                     | 12,607 |  |                  |  | (1,895)  |                                              |  |  | 10,712 |  |  |                        |  |          |                          |  | (2,113)  |              |  |  | (8,599)                                                  |       |  |                          | -     |     |  |  | -       |        |  |  | 10,712  | 
|- Loans and advances to banks                                  |  |                                                     | 1,462  |  |                  |  | -        |                                              |  |  | 1,462  |  |  |                        |  |          |                          |  | -        |              |  |  | (1,462)                                                  |       |  |                          | -     |     |  |  | -       |        |  |  | 1,462   | 
|Loans and advances to customers and banks(4)                   |  |                                                     | 5,494  |  |                  |  | (1,491)  |                                              |  |  | 4,003  |  |  |                        |  |          |                          |  | -        |              |  |  | -                                                        |       |  |                          | 4,003 |     |  |  | 198,621 |        |  |  | 202,624 | 
|Total assets                                                   |  |                                                     | 53,688 |  |                  |  | (12,205) |                                              |  |  | 41,483 |  |  |                        |  |          |                          |  | (19,530) |              |  |  | (12,445)                                                 |       |  |                          | 9,508 |     |  |  | 198,786 |        |  |  | 240,269 | 
|Derivative financial liabilities                               |  |                                                     | 31,635 |  |                  |  | (8,819)  |                                              |  |  | 22,816 |  |  |                        |  |          |                          |  | (17,417) |              |  |  | (2,565)                                                  |       |  |                          | 2,834 |     |  |  | 287     |        |  |  | 23,103  | 
|Repurchase, securities lending & similar agreements:           |  |                                                     |        |  |                  |  |          |                                              |  |  |        |  |  |                        |  |          |                          |  |          |              |  |  |                                                          |       |  |                          |       |     |  |  |         |        |  |  |         | 
|- Trading liabilities                                          |  |                                                     | 10,693 |  |                  |  | (1,895)  |                                              |  |  | 8,798  |  |  |                        |  |          |                          |  | (2,113)  |              |  |  | (6,685)                                                  |       |  |                          | -     |     |  |  | -       |        |  |  | 8,798   | 
|- Deposits by banks and customers                              |  |                                                     | 2,886  |  |                  |  | -        |                                              |  |  | 2,886  |  |  |                        |  |          |                          |  | -        |              |  |  | (2,886)                                                  |       |  |                          | -     |     |  |  | -       |        |  |  | 2,886   | 
|Deposits by customers and banks(4)                             |  |                                                     | 6,643  |  |                  |  | (1,491)  |                                              |  |  | 5,152  |  |  |                        |  |          |                          |  | -        |              |  |  | -                                                        |       |  |                          | 5,152 |     |  |  | 178,903 |        |  |  | 184,055 | 
|Total liabilities                                              |  |                                                     | 51,857 |  |                  |  | (12,205) |                                              |  |  | 39,652 |  |  |                        |  |          |                          |  | (19,530) |              |  |  | (12,136)                                                 |       |  |                          | 7,986 |     |  |  | 179,190 |        |  |  | 218,842 | 
|                                                               |  |                                                     |        |  |                  |  |          |                                              | 
|2015                                                           |  |                                                     |        |  |                  |  |          |                                              |  |  |        |  |  |                        |  |          |                          |  |          |              |  |  |                                                          |       |  |                          |       |     |  |  |         |        |  |  |         | 
|Derivative financial assets                                    |  |                                                     | 24,670 |  |                  |  | (4,861)  |                                              |  |  | 19,809 |  |  |                        |  |          |                          |  | (17,257) |              |  |  | (1,050)                                                  |       |  |                          | 1,502 |     |  |  | 1,102   |        |  |  | 20,911  | 
|Reverse repurchase, securities borrowing
& similar agreements: |  |                                                     |        |  |                  |  |          |                                              |  |  |        |  |  |                        |  |          |                          |  |          |              |  |  |                                                          |       |  |                          |       |     |  |  |         |        |  |  |         | 
|- Trading assets                                               |  |                                                     | 6,860  |  |                  |  | (1,516)  |                                              |  |  | 5,344  |  |  |                        |  |          |                          |  | (427)    |              |  |  | (4,917)                                                  |       |  |                          | -     |     |  |  | -       |        |  |  | 5,344   | 
|- Loans and advances to banks                                  |  |                                                     | 1,247  |  |                  |  | -        |                                              |  |  | 1,247  |  |  |                        |  |          |                          |  | (459)    |              |  |  | (788)                                                    |       |  |                          | -     |     |  |  | -       |        |  |  | 1,247   | 
|Loans and advances to customers and banks(4)                   |  |                                                     | 5,164  |  |                  |  | (1,494)  |                                              |  |  | 3,670  |  |  |                        |  |          |                          |  | -        |              |  |  | -                                                        |       |  |                          | 3,670 |     |  |  | 196,676 |        |  |  | 200,346 | 
|Total assets                                                   |  |                                                     | 37,941 |  |                  |  | (7,871)  |                                              |  |  | 30,070 |  |  |                        |  |          |                          |  | (18,143) |              |  |  | (6,755)                                                  |       |  |                          | 5,172 |     |  |  | 197,778 |        |  |  | 227,848 | 
|Derivative financial liabilities                               |  |                                                     | 25,612 |  |                  |  | (4,861)  |                                              |  |  | 20,751 |  |  |                        |  |          |                          |  | (17,257) |              |  |  | (2,997)                                                  |       |  |                          | 497   |     |  |  | 757     |        |  |  | 21,508  | 
|Repurchase, securities lending & similar agreements:           |  |                                                     |        |  |                  |  |          |                                              |  |  |        |  |  |                        |  |          |                          |  |          |              |  |  |                                                          |       |  |                          |       |     |  |  |         |        |  |  |         | 
|- Trading liabilities                                          |  |                                                     | 7,772  |  |                  |  | (1,516)  |                                              |  |  | 6,256  |  |  |                        |  |          |                          |  | (541)    |              |  |  | (5,715)                                                  |       |  |                          | -     |     |  |  | 1,402   |        |  |  | 7,658   | 
|- Deposits by banks and customers                              |  |                                                     | 3,588  |  |                  |  | -        |                                              |  |  | 3,588  |  |  |                        |  |          |                          |  | (345)    |              |  |  | (3,243)                                                  |       |  |                          | -     |     |  |  | 1,123   |        |  |  | 4,711   | 
|Deposits by customers and banks(4)                             |  |                                                     | 4,048  |  |                  |  | (1,494)  |                                              |  |  | 2,554  |  |  |                        |  |          |                          |  | -        |              |  |  | -                                                        |       |  |                          | 2,554 |     |  |  | 165,087 |        |  |  | 167,641 | 
|Total liabilities                                              |  |                                                     | 41,020 |  |                  |  | (7,871)  |                                              |  |  | 33,149 |  |  |                        |  |          |                          |  | (18,143) |              |  |  | (11,955)                                                 |       |  |                          | 3,051 |     |  |  | 168,369 |        |  |  | 201,518 | 

|(1) | Financial collateral is reflected at its fair value, but has been limited to the net balance sheet exposure so as not to include any over-collateralisation.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | This column includes contractual rights of set-off that are subject to uncertainty under the laws of the relevant jurisdiction.
|--- | -------------------------------------------------------------------------------------------------------------------------------

|(3) | The balance sheet total is the sum of Net amounts reported on the balance sheet that are subject to enforceable netting arrangements and Amounts not subject to enforceable netting arrangements.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | The amounts offset within loans and advances to customers/banks or deposits by customers/banks relate to offset mortgages and film deals which are classified as either and that are subject to netting.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





266Santander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements







|                                                               |  |                                                     |        |  |                |  |          |                                         |  |  |        |  |  |                      |  |  |                        |  |         |           |  |  |         |  |  |                                                        |        |  |                       |  |  |  |  |  |         |  |  |  |         | 
|-------------------------------------------------------------- |  | --------------------------------------------------- | ------ |  | -------------- |  | -------- | --------------------------------------- |  |  | ------ |  |  | -------------------- |  |  | ---------------------- |  | ------- | --------- |  |  | ------- |  |  | ------------------------------------------------------ | ------ |  | --------------------- |  |  |  |  |  | ------- |  |  |  | ------- | 
|                                                               |  | Company                                             |       
|                                                               |  | Amounts subject to enforceable netting arrangements |        |  |                |  |          |                                         |  |  |        | 
|                                                               |  | Effects of offsetting on balance sheet              |        |  |                |  |          | Related amounts not offset              |  |  |        |  |  |                      |  |  |                        | 
|                                                               |  | Grossamounts                                        |        |  | Amounts
offset |  |          | Net amountsreported on thebalance sheet |  |  |        |  |  | Financialinstruments |  |  | Financialcollateral(1) |  |         | Netamount |  |  |         |  |  | Assets not subjectto enforceablenettingarrangements(2) |        |  | Balance sheettotal(3) | 
|2016                                                           |  | £m                                                  |        |  | £m             |  |          | £m                                      |  |  |        |  |  | £m                   |  |  | £m                     |  |         | £m        |  |  |         |  |  | £m                                                     |        |  | £m                    | 
|Derivative financial assets                                    |  |                                                     | 7,379  |  |                |  | -        |                                         |  |  | 7,379  |  |  |                      |  |  |                        |  | (55)    |           |  |  | (55)    |  |  |                                                        | 7,269  |  |                       |  |  |  |  |  | 12      |  |  |  | 7,391   | 
|Reverse repurchase, securities borrowing & similar agreements: |  |                                                     |        |  |                |  |          |                                         |  |  |        |  |  |                      |  |  |                        |  |         |           |  |  |         |  |  |                                                        |        |  |                       |  |  |  |  |  |         |  |  |  |         | 
|- Trading assets                                               |  |                                                     | -      |  |                |  | -        |                                         |  |  | -      |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | -      |  |                       |  |  |  |  |  | -       |  |  |  | -       | 
|- Loans and advances to banks                                  |  |                                                     | -      |  |                |  | -        |                                         |  |  | -      |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | -      |  |                       |  |  |  |  |  | -       |  |  |  | -       | 
|Loans and advances to customers and banks(4)                   |  |                                                     | 50,509 |  |                |  | (24,796) |                                         |  |  | 25,713 |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | 25,713 |  |                       |  |  |  |  |  | 200,560 |  |  |  | 226,273 | 
|Total assets                                                   |  |                                                     | 57,888 |  |                |  | (24,796) |                                         |  |  | 33,092 |  |  |                      |  |  |                        |  | (55)    |           |  |  | (55)    |  |  |                                                        | 32,982 |  |                       |  |  |  |  |  | 200,572 |  |  |  | 233,664 | 
|Derivative financial liabilities                               |  |                                                     | 3,435  |  |                |  | -        |                                         |  |  | 3,435  |  |  |                      |  |  |                        |  | (55)    |           |  |  | (95)    |  |  |                                                        | 3,285  |  |                       |  |  |  |  |  | 5       |  |  |  | 3,440   | 
|Repurchase, securities lending & similar agreements:           |  |                                                     |        |  |                |  |          |                                         |  |  |        |  |  |                      |  |  |                        |  |         |           |  |  |         |  |  |                                                        |        |  |                       |  |  |  |  |  |         |  |  |  |         | 
|- Trading liabilities                                          |  |                                                     | -      |  |                |  | -        |                                         |  |  | -      |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | -      |  |                       |  |  |  |  |  | -       |  |  |  | -       | 
|- Deposits by banks and customers                              |  |                                                     | 2,208  |  |                |  | -        |                                         |  |  | 2,208  |  |  |                      |  |  |                        |  | -       |           |  |  | (2,184) |  |  |                                                        | 24     |  |                       |  |  |  |  |  | -       |  |  |  | 2,208   | 
|Deposits by customers and banks(4)                             |  |                                                     | 66,037 |  |                |  | (24,796) |                                         |  |  | 41,241 |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | 41,241 |  |                       |  |  |  |  |  | 170,966 |  |  |  | 212,207 | 
|Total liabilities                                              |  |                                                     | 71,680 |  |                |  | (24,796) |                                         |  |  | 46,884 |  |  |                      |  |  |                        |  | (55)    |           |  |  | (2,279) |  |  |                                                        | 44,550 |  |                       |  |  |  |  |  | 170,971 |  |  |  | 217,855 | 
|2015                                                           |  |                                                     |        |  |                |  |          |                                         |  |  |        |  |  |                      |  |  |                        |  |         |           |  |  |         |  |  |                                                        |        |  |                       |  |  |  |  |  |         |  |  |  |         | 
|Derivative financial assets                                    |  |                                                     | 3,250  |  |                |  | -        |                                         |  |  | 3,250  |  |  |                      |  |  |                        |  | (2,922) |           |  |  | (56)    |  |  |                                                        | 272    |  |                       |  |  |  |  |  | 52      |  |  |  | 3,302   | 
|Reverse repurchase, securities borrowing & similar agreements: |  |                                                     |        |  |                |  |          |                                         |  |  |        |  |  |                      |  |  |                        |  |         |           |  |  |         |  |  |                                                        |        |  |                       |  |  |  |  |  |         |  |  |  |         | 
|- Trading assets                                               |  |                                                     | -      |  |                |  | -        |                                         |  |  | -      |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | -      |  |                       |  |  |  |  |  | -       |  |  |  | -       | 
|- Loans and advances to banks                                  |  |                                                     | -      |  |                |  | -        |                                         |  |  | -      |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | -      |  |                       |  |  |  |  |  | -       |  |  |  | -       | 
|Loans and advances to customers and banks(4)                   |  |                                                     | 46,220 |  |                |  | (23,097) |                                         |  |  | 23,123 |  |  |                      |  |  |                        |  | (2,295) |           |  |  | -       |  |  |                                                        | 20,828 |  |                       |  |  |  |  |  | 177,447 |  |  |  | 200,570 | 
|Total assets                                                   |  |                                                     | 49,470 |  |                |  | (23,097) |                                         |  |  | 26,373 |  |  |                      |  |  |                        |  | (5,217) |           |  |  | (56)    |  |  |                                                        | 21,100 |  |                       |  |  |  |  |  | 177,499 |  |  |  | 203,872 | 
|Derivative financial liabilities                               |  |                                                     | 3,002  |  |                |  | -        |                                         |  |  | 3,002  |  |  |                      |  |  |                        |  | (2,922) |           |  |  | (73)    |  |  |                                                        | 7      |  |                       |  |  |  |  |  | 26      |  |  |  | 3,028   | 
|Repurchase, securities lending & similar agreements:           |  |                                                     |        |  |                |  |          |                                         |  |  |        |  |  |                      |  |  |                        |  |         |           |  |  |         |  |  |                                                        |        |  |                       |  |  |  |  |  |         |  |  |  |         | 
|- Trading liabilities                                          |  |                                                     | -      |  |                |  | -        |                                         |  |  | -      |  |  |                      |  |  |                        |  | -       |           |  |  | -       |  |  |                                                        | -      |  |                       |  |  |  |  |  | -       |  |  |  | -       | 
|- Deposits by banks and customers                              |  |                                                     | 2,066  |  |                |  | -        |                                         |  |  | 2,066  |  |  |                      |  |  |                        |  | -       |           |  |  | (2,066) |  |  |                                                        | -      |  |                       |  |  |  |  |  | -       |  |  |  | 2,066   | 
|Deposits by customers and banks(4)                             |  |                                                     | 81,138 |  |                |  | (23,097) |                                         |  |  | 58,041 |  |  |                      |  |  |                        |  | (2,295) |           |  |  | -       |  |  |                                                        | 55,746 |  |                       |  |  |  |  |  | 157,452 |  |  |  | 215,493 | 
|Total liabilities                                              |  |                                                     | 86,206 |  |                |  | (23,097) |                                         |  |  | 63,109 |  |  |                      |  |  |                        |  | (5,217) |           |  |  | (2,139) |  |  |                                                        | 55,753 |  |                       |  |  |  |  |  | 157,478 |  |  |  | 220,587 | 

|(1) | Financial collateral is reflected at its fair value, but has been limited to the net balance sheet exposure so as not to include any over-collateralisation.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | This column includes contractual rights of set-off that are subject to uncertainty under the laws of the relevant jurisdiction.
|--- | -------------------------------------------------------------------------------------------------------------------------------

|(3) | The balance sheet total is the sum of Net amounts reported on the balance sheet that are subject to enforceable netting arrangements and Amounts not subject to enforceable netting arrangements.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | The amounts offset within loans and advances to customers/banks or deposits by customers/banks relate to offset mortgages and film deals which are classified as either and that are subject to netting.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

45. EVENTS AFTER THE BALANCE SHEET DATE

There have
been no significant events between 31 December 2016 and the date of approval of these financial statements which would require a change to or additional disclosure in the financial statements.





Santander UK plc267



---

##### Table of Contents



Annual Report 2016

Financial
statements









46. CHANGES TO COMPARATIVE DATA

The following sets out
changes to comparative data from those presented in our 2015 Form 20-F.

Note 2. Segments

In the fourth quarter of 2016, certain customers were transferred between our Retail Banking and Commercial Banking business segments, in line with how we now manage our
customers. Small business customers with turnover up to £6.5m per annum (previously up to £250,000) are now served as business banking customers in Retail Banking. The balances transferred from Commercial Banking to Retail Banking
were £2.2bn in customer loans and £3.2bn in customer deposits at 31 December 2016 (2015: £2.3bn and £3.0bn, respectively). The segmental analyses for Retail Banking and Commercial Banking have been adjusted to reflect
these changes for prior years.

2015

|                                                                     |  |                        |         |  |                    |  |       |                        |  |  |                        |  |  |               |        |  |                        |  |         |  |  |  |        | 
|-------------------------------------------------------------------- |  | ---------------------- | ------- |  | ------------------ |  | ----- | ---------------------- |  |  | ---------------------- |  |  | ------------- | ------ |  | ---------------------- |  | ------- |  |  |  | ------ | 
|                                                                     |  | Retail Banking         |         |  | Commercial Banking | 
|                                                                     |  | As reported
in 2016 £m |         |  | Adjustment
£m      |  |       | As reported
in 2015 £m |  |  | As reported
in 2016 £m |  |  | Adjustment
£m |        |  | As reported
in 2015 £m | 
|Net interest income                                                  |  |                        | 3,077   |  |                    |  | 92    |                        |  |  | 2,985                  |  |  |               | 368    |  |                        |  | (92)    |  |  |  | 460    | 
|Non-interest income                                                  |  |                        | 536     |  |                    |  | 15    |                        |  |  | 521                    |  |  |               | 94     |  |                        |  | (15)    |  |  |  | 109    | 
|Total operating income                                               |  |                        | 3,613   |  |                    |  | 107   |                        |  |  | 3,506                  |  |  |               | 462    |  |                        |  | (107)   |  |  |  | 569    | 
|Operating expenses before impairment losses, provisions and
charges  |  |                        | (1,898) |  |                    |  | (115) |                        |  |  | (1,783)                |  |  |               | (217)  |  |                        |  | 115     |  |  |  | (332)  | 
|Impairment (losses)/releases on loans and advances                   |  |                        | (90)    |  |                    |  | (14)  |                        |  |  | (76)                   |  |  |               | (25)   |  |                        |  | 14      |  |  |  | (39)   | 
|Provisions for other liabilities and (charges)/releases              |  |                        | (728)   |  |                    |  | (1)   |                        |  |  | (727)                  |  |  |               | (23)   |  |                        |  | 1       |  |  |  | (24)   | 
|Total operating impairment losses, provisions and
(charges)/releases |  |                        | (818)   |  |                    |  | (15)  |                        |  |  | (803)                  |  |  |               | (48)   |  |                        |  | 15      |  |  |  | (63)   | 
|Profit before tax                                                    |  |                        | 897     |  |                    |  | (23)  |                        |  |  | 920                    |  |  |               | 197    |  |                        |  | 23      |  |  |  | 174    | 
|                                                                     |  |                        |         |  |                    | 
|Revenue from external customers                                      |  |                        | 4,529   |  |                    |  | 94    |                        |  |  | 4,435                  |  |  |               | 626    |  |                        |  | (94)    |  |  |  | 720    | 
|Inter-segment revenue                                                |  |                        | (916)   |  |                    |  | 13    |                        |  |  | (929)                  |  |  |               | (164)  |  |                        |  | (13)    |  |  |  | (151)  | 
|Total operating income                                               |  |                        | 3,613   |  |                    |  | 107   |                        |  |  | 3,506                  |  |  |               | 462    |  |                        |  | (107)   |  |  |  | 569    | 
|                                                                     |  |                        |         |  |                    | 
|Customer loans                                                       |  |                        | 167,093 |  |                    |  | 2,263 |                        |  |  | 164,830                |  |  |               | 18,680 |  |                        |  | (2,263) |  |  |  | 20,943 | 
|Total assets                                                         |  |                        | 174,110 |  |                    |  | 2,263 |                        |  |  | 171,847                |  |  |               | 18,680 |  |                        |  | (2,263) |  |  |  | 20,943 | 
|Customer deposits                                                    |  |                        | 140,358 |  |                    |  | 3,026 |                        |  |  | 137,332                |  |  |               | 15,076 |  |                        |  | (3,026) |  |  |  | 18,102 | 
|Total liabilities                                                    |  |                        | 143,157 |  |                    |  | 3,026 |                        |  |  | 140,131                |  |  |               | 15,076 |  |                        |  | (3,026) |  |  |  | 18,102 | 
|                                                                     |  |                        |         |  |                    | 
|Average number of staff                                              |  |                        | 18,133  |  |                    |  | 638   |                        |  |  | 17,495                 |  |  |               | 1,367  |  |                        |  | (638)   |  |  |  | 2,005  | 
|                                                                     |  |                        |         |  |                    | 
|2014                                                                 |  |                        |         |  |                    |  |       |                        |  |  |                        |  |  |               |        |  |                        |  |         |  |  |  |        | 
|                                                                     |  | Retail Banking         |         |  | Commercial Banking | 
|                                                                     |  | As reported
in 2016 £m |         |  | Adjustment
£m      |  |       | As reported
in 2015 £m |  |  | As reported
in 2016 £m |  |  | Adjustment
£m |        |  | As reported
in 2015 £m | 
|Net interest income                                                  |  |                        | 3,041   |  |                    |  | 94    |                        |  |  | 2,947                  |  |  |               | 279    |  |                        |  | (94)    |  |  |  | 373    | 
|Non-interest income                                                  |  |                        | 569     |  |                    |  | 9     |                        |  |  | 560                    |  |  |               | 80     |  |                        |  | (9)     |  |  |  | 89     | 
|Total operating income                                               |  |                        | 3,610   |  |                    |  | 103   |                        |  |  | 3,507                  |  |  |               | 359    |  |                        |  | (103)   |  |  |  | 462    | 
|Operating expenses before impairment losses, provisions and
charges  |  |                        | (1,850) |  |                    |  | (97)  |                        |  |  | (1,753)                |  |  |               | (200)  |  |                        |  | 97      |  |  |  | (297)  | 
|Impairment (losses)/releases on loans and advances                   |  |                        | (203)   |  |                    |  | (16)  |                        |  |  | (187)                  |  |  |               | (76)   |  |                        |  | 16      |  |  |  | (92)   | 
|Provisions for other liabilities and (charges)/releases              |  |                        | (398)   |  |                    |  | (3)   |                        |  |  | (395)                  |  |  |               | (9)    |  |                        |  | 3       |  |  |  | (12)   | 
|Total operating impairment losses, provisions and
(charges)/releases |  |                        | (601)   |  |                    |  | (19)  |                        |  |  | (582)                  |  |  |               | (85)   |  |                        |  | 19      |  |  |  | (104)  | 
|Profit before tax                                                    |  |                        | 1,159   |  |                    |  | (13)  |                        |  |  | 1,172                  |  |  |               | 74     |  |                        |  | 13      |  |  |  | 61     | 
|                                                                     |  |                        |         |  |                    | 
|Revenue from external customers                                      |  |                        | 4,630   |  |                    |  | 93    |                        |  |  | 4,537                  |  |  |               | 527    |  |                        |  | (93)    |  |  |  | 620    | 
|Inter-segment revenue                                                |  |                        | (1,020) |  |                    |  | 10    |                        |  |  | (1,030)                |  |  |               | (168)  |  |                        |  | (10)    |  |  |  | (158)  | 
|Total operating income                                               |  |                        | 3,610   |  |                    |  | 103   |                        |  |  | 3,507                  |  |  |               | 359    |  |                        |  | (103)   |  |  |  | 462    | 
|                                                                     |  |                        |         |  |                    | 
|Customer loans                                                       |  |                        | 161,005 |  |                    |  | 2,490 |                        |  |  | 158,515                |  |  |               | 16,147 |  |                        |  | (2,490) |  |  |  | 18,637 | 
|Total assets                                                         |  |                        | 165,920 |  |                    |  | 2,490 |                        |  |  | 163,430                |  |  |               | 16,147 |  |                        |  | (2,490) |  |  |  | 18,637 | 
|Customer deposits                                                    |  |                        | 132,946 |  |                    |  | 3,362 |                        |  |  | 129,584                |  |  |               | 11,965 |  |                        |  | (3,362) |  |  |  | 15,327 | 
|Total liabilities                                                    |  |                        | 135,903 |  |                    |  | 3,362 |                        |  |  | 132,541                |  |  |               | 11,965 |  |                        |  | (3,362) |  |  |  | 15,327 | 
|                                                                     |  |                        |         |  |                    | 
|Average number of staff                                              |  |                        | 18,270  |  |                    |  | 588   |                        |  |  | 17,682                 |  |  |               | 1,261  |  |                        |  | (588)   |  |  |  | 1,849  | 





267aSantander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Risk review

In the fourth quarter of 2016, certain customers were transferred between our Retail Banking and Commercial Banking business segments, in line with how we now manage our
customers. Small business customers with turnover up to £6.5m per annum (previously up to £250,000) are now served as business banking customers in Retail Banking. The balances transferred from Commercial Banking to Retail Banking
were £2.2bn in customer loans and £3.2bn in customer deposits at 31 December 2016 (2015: £2.3bn and £3.0bn, respectively). The segmental analyses for Retail Banking and Commercial Banking have been adjusted to reflect
these changes for prior years.

CREDIT RISK

SANTANDER UK GROUP LEVEL  CREDIT RISK REVIEW

Forbearance summary



|                    |  |                         |       |  |                |  |       |                         |  |  |                        |  |  |                     |       |  |                               |  |       |  |  |  |       | 
|------------------- |  | ----------------------- | ----- |  | -------------- |  | ----- | ----------------------- |  |  | ---------------------- |  |  | ------------------- | ----- |  | ----------------------------- |  | ----- |  |  |  | ----- | 
|                    |  | Customer loans          |       |  | Forbearance    | 
|                    |  | As reported
in 2016 £bn |       |  | Adjustment
£bn |  |       | As reported
in 2015 £bn |  |  | As reported
in 2016 £m |  |  | Adjustment
£m       |       |  | As reported
in 2015 £m        | 
|Retail Banking      |  |                         | 167.0 |  |                |  | 2.2   |                         |  |  | 164.8                  |  |  |                     | 3,868 |  |                               |  | 160   |  |  |  | 3,708 | 
|Commercial Banking  |  |                         | 18.7  |  |                |  | (2.2) |                         |  |  | 20.9                   |  |  |                     | 545   |  |                               |  | (160) |  |  |  | 705   | 
|Credit performance  | 
|Retail Banking      |  | Customer loans
£bn      |       |  | NPLs
£m        |  |       | NPL ratio
%             |  |  | NPL coverage
%         |  |  | Gross write-offs
£m |       |  | Impairment
loss allowances £m | 
|As reported in 2016 |  |                         | 167.0 |  |                |  | 2,520 |                         |  |  | 1.51                   |  |  |                     | 33    |  |                               |  | 248   |  |  |  | 823   | 
|Adjustment          |  |                         | 2.2   |  |                |  | 147   |                         |  |  | 0.07                   |  |  |                     | 1     |  |                               |  | 36    |  |  |  | 61    | 
|As reported in 2015 |  |                         | 164.8 |  |                |  | 2,373 |                         |  |  | 1.44                   |  |  |                     | 32    |  |                               |  | 212   |  |  |  | 762   | 
|                    |  |                         |       |  |                |  |       |                         |  |  |                        |  |  |                     |       |  |                               |  |       |  |  |  |       | 
|Commercial Banking  |  | Customer loans
£bn      |       |  | NPLs
£m        |  |       | NPL ratio
%             |  |  | NPL coverage
%         |  |  | Gross write-offs
£m |       |  | Impairment
loss allowances £m | 
|As reported in 2016 |  |                         | 18.7  |  |                |  | 439   |                         |  |  | 2.35                   |  |  |                     | 45    |  |                               |  | 47    |  |  |  | 199   | 
|Adjustment          |  |                         | (2.2) |  |                |  | (147) |                         |  |  | (0.45)                 |  |  |                     | (1)   |  |                               |  | (36)  |  |  |  | (61)  | 
|As reported in 2015 |  |                         | 20.9  |  |                |  | 586   |                         |  |  | 2.80                   |  |  |                     | 44    |  |                               |  | 83    |  |  |  | 260   | 

Forbearance exit criteria

In the first half of
2016, we changed our exit criteria for forbearance. The disclosure has been enhanced to disclose that the impact of applying these exit criteria to our customer loans at 31 December 2015 would be to reduce the balance by £1,824m.

RETAIL BANKING  CREDIT RISK REVIEW

BUSINESS BANKING, CONSUMER FINANCE AND OTHER UNSECURED LENDING

Lending



|                                          |  |                        |       |  |               |  |       |                        |  |  |     | 
|----------------------------------------- |  | ---------------------- | ----- |  | ------------- |  | ----- | ---------------------- |  |  | --- | 
|Business banking                          |  | As reported
in 2016 £m |       |  | Adjustment
£m |  |       | As reported
in 2015 £m | 
|At 1 January                              |  |                        | 2,644 |  |               |  | 2,489 |                        |  |  | 155 | 
|Net lending in the year                   |  |                        | (231) |  |               |  | (226) |                        |  |  | (5) | 
|At 31 December                            |  |                        | 2,413 |  |               |  | 2,263 |                        |  |  | 150 | 
|Credit
performance                        |  |                        |       |  |               |  |       |                        |  |  |     | 
|Business banking                          |  | As reported
in 2016 £m |       |  | Adjustment
£m |  |       | As reported
in 2015 £m | 
|Loans and advances to customers of which: |  |                        | 2,413 |  |               |  | 2,263 |                        |  |  | 150 | 
|Performing                                |  |                        | 2,254 |  |               |  | 2,116 |                        |  |  | 138 | 
|Early arrears                             |  |                        | 4     |  |               |  |      |                        |  |  | 4   | 
|NPLs                                      |  |                        | 155   |  |               |  | 147   |                        |  |  | 8   | 
|Impairment loss allowances                |  |                        | 75    |  |               |  | 61    |                        |  |  | 14  | 





Santander UK plc267b



---

##### Table of Contents



Annual Report 2016

Financial
statements









OTHER SEGMENTS  CREDIT RISK REVIEW

Other segments credit risk  committed exposures  Rating distribution



|                       |  |                   |    |  |               |  |     |                   |  |  |                    |  |  |                   |       |  |                 |  |       |                      |  |  |          |  |  |          |       |  |  |  |       |  |  |  |         | 
|---------------------- |  | ----------------- | -- |  | ------------- |  | --- | ----------------- |  |  | ------------------ |  |  | ----------------- | ----- |  | --------------- |  | ----- | -------------------- |  |  | -------- |  |  | -------- | ----- |  |  |  | ----- |  |  |  | ------- | 
|SME and mid corporate  |  | 9
(AAA to AA-)
£m |    |  | 8
(A+ toA) £m |  |     | 7
(A- to BBB+)
£m |  |  | 6
(BBB to BBB-)
£m |  |  | 5
(BB+ to BB-)
£m |       |  | 4
(B+ to B) 
£m |  |       | 1 to 3
(B- to D) 
£m |  |  | Other
£m |  |  | Total
£m |      
|As reported in 2016    |  |                   | 14 |  |               |  | 115 |                   |  |  | 330                |  |  |                   | 2,505 |  |                 |  | 4,167 |                      |  |  | 3,235    |  |  |          | 361   |  |  |  | 147   |  |  |  | 10,874  | 
|Adjustment             |  |                   | -  |  |               |  | (1) |                   |  |  | (5)                |  |  |                   | 65    |  |                 |  | (229) |                      |  |  | (979)    |  |  |          | (175) |  |  |  | (145) |  |  |  | (1,469) | 
|As reported in 2015    |  |                   | 14 |  |               |  | 116 |                   |  |  | 335                |  |  |                   | 2,440 |  |                 |  | 4,396 |                      |  |  | 4,214    |  |  |          | 536   |  |  |  | 292   |  |  |  | 12,343  | 
|                       |  |                   |    |  |               |  |     |                   |  |  |                    |  |  |                   |       |  |                 |  |       |                      |  |  |          |  |  |          |       |  |  |  |       |  |  |  |         | 
|Commercial Real Estate |  | 9
(AAA to AA-)
£m |    |  | 8
(A+ toA) £m |  |     | 7
(A- to BBB+)
£m |  |  | 6
(BBB to BBB-)
£m |  |  | 5
(BB+ to BB-)
£m |       |  | 4
(B+ to B) 
£m |  |       | 1 to 3
(B- to D) 
£m |  |  | Other
£m |  |  | Total
£m |      
|As reported in 2016    |  |                   | -  |  |               |  | -   |                   |  |  | 656                |  |  |                   | 5,236 |  |                 |  | 3,118 |                      |  |  | 459      |  |  |          | 186   |  |  |  | 27    |  |  |  | 9,682   | 
|Adjustment             |  |                   | -  |  |               |  | (1) |                   |  |  | (3)                |  |  |                   | (319) |  |                 |  | (368) |                      |  |  | (115)    |  |  |          | (29)  |  |  |  | (29)  |  |  |  | (864)   | 
|As reported in 2015    |  |                   | -  |  |               |  | 1   |                   |  |  | 659                |  |  |                   | 5,555 |  |                 |  | 3,486 |                      |  |  | 574      |  |  |          | 215   |  |  |  | 56    |  |  |  | 10,546  | 

Other segments credit risk  committed exposures  Geographical distribution



|                       |  |       |         |  |                        |  |    |                   |  |  |       |  |  |                  |   |  |          |  |   |  |  |  |         | 
|---------------------- |  | ----- | ------- |  | ---------------------- |  | -- | ----------------- |  |  | ----- |  |  | ---------------- | - |  | -------- |  | - |  |  |  | ------- | 
|SME and mid corporate  |  | UK
£m |         |  | Peripheral
eurozone £m |  |    | Rest of
Europe £m |  |  | US
£m |  |  | Rest of
World £m |   |  | Total
£m | 
|As reported in 2016    |  |       | 10,800  |  |                        |  | 25 |                   |  |  | 47    |  |  |                  | - |  |          |  | 2 |  |  |  | 10,874  | 
|Adjustment             |  |       | (1,469) |  |                        |  | -  |                   |  |  | -     |  |  |                  | - |  |          |  | - |  |  |  | (1,469) | 
|As reported in 2015    |  |       | 12,269  |  |                        |  | 25 |                   |  |  | 47    |  |  |                  | - |  |          |  | 2 |  |  |  | 12,343  | 
|                       |  |       |         |  |                        |  |    |                   |  |  |       |  |  |                  |   |  |          |  |   |  |  |  |         | 
|Commercial Real Estate |  | UK
£m |         |  | Peripheral
eurozone £m |  |    | Rest of
Europe £m |  |  | US
£m |  |  | Rest of
World £m |   |  | Total
£m | 
|As reported in 2016    |  |       | 9,682   |  |                        |  | -  |                   |  |  | -     |  |  |                  | - |  |          |  | - |  |  |  | 9,682   | 
|Adjustment             |  |       | (864)   |  |                        |  | -  |                   |  |  | -     |  |  |                  | - |  |          |  | - |  |  |  | (864)   | 
|As reported in 2015    |  |       | 10,546  |  |                        |  | -  |                   |  |  | -     |  |  |                  | - |  |          |  | - |  |  |  | 10,546  | 

Other segments  credit performance



|                       |               |                    |         |                        |                                        |  |                         |  |  |                            |      |  |          |  |       |  |  |  |        |  |  |  |         |  |  |  |      | 
|---------------------- | ------------- | ------------------ | ------- | ---------------------- | -------------------------------------- |  | ----------------------- |  |  | -------------------------- | ---- |  | -------- |  | ----- |  |  |  | ------ |  |  |  | ------- |  |  |  | ---- | 
|SME and mid corporate  |               | Committed Exposure |         |                        | Observed
impairment loss allowances
£m | 
|                       |               |                    |         | Watchlist              |                                        |  |                         |  |  |                            |      | 
|                       | Performing
£m |                    |         | Enhanced
Monitoring £m |                                        |  | Proactive
Management £m |  |  | Non-performing
exposure £m |      |  | Total
£m |  |      
|As reported in 2016    |               |                    | 9,424   |                        |                                        |  | 844                     |  |  |                            | 307  |  |          |  | 299   |  |  |  |        |  |  |  | 10,874  |  |  |  | 119  | 
|Adjustment             |               |                    | (1,193) |                        |                                        |  | (125)                   |  |  |                            | (34) |  |          |  | (117) |  |  |  |        |  |  |  | (1,469) |  |  |  | (43) | 
|As reported in 2015    |               |                    | 10,617  |                        |                                        |  | 969                     |  |  |                            | 341  |  |          |  | 416   |  |  |  | 12,343 |  |  |  | 162     | 
|                       |               |                    |         |                        |                                        |  |                         |  |  |                            |      |  |          |  |       |  |  |  |        |  |  |  |         | 
|Commercial Real Estate |               | Committed Exposure |         |                        | Observed
impairment loss allowances
£m | 
|                       |               |                    |         | Watchlist              |                                        |  |                         |  |  |                            |      | 
|                       | Performing
£m |                    |         | Enhanced
Monitoring £m |                                        |  | Proactive
Management £m |  |  | Non-performing
exposure £m |      |  | Total
£m |  |      
|As reported in 2016    |               |                    | 9,306   |                        |                                        |  | 123                     |  |  |                            | 93   |  |          |  | 160   |  |  |  |        |  |  |  | 9,682   |  |  |  | 43   | 
|Adjustment             |               |                    | (777)   |                        |                                        |  | (27)                    |  |  |                            | (30) |  |          |  | (30)  |  |  |  |        |  |  |  | (864)   |  |  |  | (13) | 
|As reported in 2015    |               |                    | 10,083  |                        |                                        |  | 150                     |  |  |                            | 123  |  |          |  | 190   |  |  |  | 10,546 |  |  |  | 56      | 





267cSantander UK plc



---

##### Table of Contents

| |  |  |  |  |  |  |  |  |  |              |  |                   |  |                     
| |  |  |  |  |  |  |  |  |  | ------------ |  | ----------------- |  | --------------------
| |  |  |  |  |  |  | 
| |  |  |  |  |  |  |  |  |  |              |  | Primary financial |  | Notes to the        
| |  |  |  |  |  |  |  |  |  | Audit report |  | statements        |  | financial statements





Non-performing loans and advances



|                                          |  |                        |        |  |               |  |         |                        |  |  |        | 
|----------------------------------------- |  | ---------------------- | ------ |  | ------------- |  | ------- | ---------------------- |  |  | ------ | 
|Commercial Banking                        |  | As reported
in 2016 £m |        |  | Adjustment
£m |  |         | As reported
in 2015 £m | 
|Loans and advances to customers of which: |  |                        | 18,680 |  |               |  | (2,263) |                        |  |  | 20,943 | 
|NPLs                                      |  |                        | 439    |  |               |  | (147)   |                        |  |  | 586    | 
|Impairment loss allowances                |  |                        | 199    |  |               |  | (61)    |                        |  |  | 260    | 
|                                          |  |                        |       
|                                          |  |                        | %      |  |               |  | %       |                        |  |  | %      | 
|NPL ratio                                 |  |                        | 2.35   |  |               |  | (0.45)  |                        |  |  | 2.80   | 
|Coverage ratio                            |  |                        | 45     |  |               |  | 1       |                        |  |  | 44     | 
|NPL movements in 2016                     |  |                        |        |  |              
|Commercial Banking                        |  | As reported
in 2016 £m |        |  | Adjustment
£m |  |         | As reported
in 2015 £m | 
|At 1 January 2016                         |  |                        | 439    |  |               |  | (147)   |                        |  |  | 586    | 
|Other segments 
forbearance              |  |                        |        |  |              
|Commercial Banking                        |  | As reported
in 2016 £m |        |  | Adjustment
£m |  |         | As reported
in 2015 £m | 
|In-flow during the year                   |  |                        |        |  |               |  |         |                        |  |  |        | 
| Term extension                          |  |                        | 33     |  |               |  | (3)     |                        |  |  | 36     | 
| Interest-only                           |  |                        | 77     |  |               |  | (20)    |                        |  |  | 97     | 
| Other payment rescheduling              |  |                        | 68     |  |               |  | (25)    |                        |  |  | 93     | 
|                                          |  |                        | 178    |  |               |  | (48)    |                        |  |  | 226    | 
|Stock                                     |  |                        |        |  |               |  |         |                        |  |  |        | 
| Term extension                          |  |                        | 145    |  |               |  | (22)    |                        |  |  | 167    | 
| Interest-only                           |  |                        | 230    |  |               |  | (77)    |                        |  |  | 307    | 
| Other payment rescheduling              |  |                        | 170    |  |               |  | (61)    |                        |  |  | 231    | 
|                                          |  |                        | 545    |  |               |  | (160)   |                        |  |  | 705    | 
|Of which:                                 |  |                        |        |  |               |  |         |                        |  |  |        | 
| Non-performing                          |  |                        | 318    |  |               |  | (87)    |                        |  |  | 405    | 
| Performing                              |  |                        | 227    |  |               |  | (73)    |                        |  |  | 300    | 
|                                          |  |                        | 545    |  |               |  | (160)   |                        |  |  | 705    | 
|Proportion of portfolio                   |  |                        | 2.4%   |  |               |  | (0.4%)  |                        |  |  | 2.8%   | 





Santander UK plc267d



---

##### Table of Contents

Shareholder information





|    |  |                                            
|--- |  | -------------------------------------------
|    |  |                                            
|    | 
|269 |  | Subsidiaries, joint ventures and associates
|    |  |                                            
|    | 
|272 |  | Forward-looking statements                 
|    |  |                                            
|    | 
|273 |  | Selected financial data                    
|    |  |                                            





268Santander UK plc



---

##### Table of Contents

| |  |  |  |                              |  |                 |  |                |  |         
| |  |  |  | ---------------------------- |  | --------------- |  | -------------- |  | --------
| |  |  |  |                              | 
| |  |  |  | Subsidiaries, joint ventures |  | Forward-looking |  | Selected       |  |         
| |  |  |  | and associates               |  | statements      |  | financial data |  | Glossary





Subsidiaries, joint ventures and associates

In accordance with Section 409 of the Companies Act 2006, a list of Santander UK plcs subsidiaries, joint ventures and associates, the registered
office, the country of incorporation and the effective percentage of equity owned at 31 December 2016 is disclosed below. This section forms an integral part of the financial statements.

Subsidiaries

All subsidiaries are consolidated by the Santander UK group.

Incorporated and registered in England and Wales:



|                                                                  |  |                      |  |                            |  |                                                                    |  |                                   |     |  |                                   |  |     | 
|----------------------------------------------------------------- |  | -------------------- |  | -------------------------- |  | ------------------------------------------------------------------ |  | --------------------------------- | --- |  | --------------------------------- |  | --- | 
|Name of subsidiary                                                |  | Registered
office(1) |  | Direct/indirect  ownership |  | Share class through
which ownership is held                        |  | Proportion ofownership interest
% |     |  | Ultimate proportion ofownership
% | 
|2 & 3 Triton Limited                                              |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|A & L CF December (1) Limited                                     |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|A & L CF June (2) Limited                                         |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|A & L CF June (3) Limited                                         |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|A & L CF March (5) Limited                                        |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|A & L CF September (4) Limited                                    |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|A&L CF December (10) Limited (in liquidation)                     |  | K                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Abbey National Beta Investments Limited                           |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | 8   |  |                                   |  | 100 | 
|Abbey National Business Office Equipment Leasing Limited          |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | 42  |  |                                   |  | 100 | 
|Abbey National Nominees Limited                                   |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Abbey National North America Holdings Limited (in
liquidation)    |  | K                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Abbey National Pension (Escrow Services) Limited (in
liquidation) |  | K                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Abbey National PLP (UK) Limited                                   |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Abbey National Property Investments                               |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Abbey National Treasury (Structured Solutions) Limited            |  | A                    |  | Indirect                   |  | Ordinary £0.01                                                     |  |                                   | -   |  |                                   |  | 100 | 
|Abbey National Treasury Services Investments Limited              |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Abbey National Treasury Services Overseas Holdings                |  | A                    |  | Direct                     |  | Minority £1 Non-redeemable preference £1 Ordinary
£1               |  |                                   | 100 |  |                                   |  | 100 | 
|Abbey National Treasury Services plc                              |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Abbey National UK Investments                                     |  | A                    |  | Indirect                   |  | Ordinary 0.20
Ordinary £1                                         |  |                                   | 1   |  |                                   |  | 100 | 
|Abbey Stockbrokers (Nominees) Limited                             |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Abbey Stockbrokers Limited                                        |  | A                    |  | Indirect                   |  | Ordinary £1 A
Preference £1 B Preference £1                        |  |                                   | -   |  |                                   |  | 100 | 
|Alliance & Leicester Cash Solutions Limited                       |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Alliance & Leicester Commercial Bank plc                          |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Alliance & Leicester Investments (Derivatives)
Limited            |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Alliance & Leicester Investments (No.2) Limited                   |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Alliance & Leicester Investments Limited                          |  | A                    |  | Direct                     |  | Ordinary £1
Non-cumulative fixed rate preference £1                |  |                                   | 100 |  |                                   |  | 100 | 
|Alliance & Leicester Limited                                      |  | L                    |  | Direct                     |  | Ordinary £0.50                                                     |  |                                   | 100 |  |                                   |  | 100 | 
|Alliance & Leicester Personal Finance Limited                     |  | L                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|AN (123) Limited                                                  |  | A                    |  | Direct                     |  | Ordinary £0.10                                                     |  |                                   | 100 |  |                                   |  | 100 | 
|ANITCO Limited                                                    |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Cater Allen Holdings Limited                                      |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Cater Allen International Limited                                 |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Cater Allen Limited                                               |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Cater Allen Lloyds Holdings Limited                              |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | -   |  |                                   |  | 100 | 
|Cater Allen Syndicate Management Limited                          |  | A                    |  | Indirect                   |  | Ordinary £1 Preference
£1                                          |  |                                   | -   |  |                                   |  | 100 | 
|First National Motor Business Limited                             |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|First National Motor Contracts Limited                            |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|First National Motor Facilities Limited                           |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|First National Motor Finance Limited                              |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|First National Motor Leasing Limited                              |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|First National Motor plc                                          |  | B                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|First National Tricity Finance Limited                            |  | A                    |  | Indirect                   |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Girobank Investments Limited (in liquidation)                     |  | K                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Insurance Funding Solutions Limited                               |  | A                    |  | Direct                     |  | Ordinary £1                                                        |  |                                   | 100 |  |                                   |  | 100 | 
|Liquidity Limited                                                 |  | A                    |  | Direct                     |  | Ordinary A £0.10
Ordinary B1 £0.10 Ordinary B2 £0.10
Preference £1 |  |                                   | 100 |  |                                   |  | 100 | 

|(1) | Refer to the key at the end of this section for the registered office address
|--- | -----------------------------------------------------------------------------





Santander UK plc269



---

##### Table of Contents



Annual Report 2016

Shareholder
information











|                                                                                          |  |                       |  |                            |  |                                            |  |                                   |     |  |                                   |  |     | 
|----------------------------------------------------------------------------------------- |  | --------------------- |  | -------------------------- |  | ------------------------------------------ |  | --------------------------------- | --- |  | --------------------------------- |  | --- | 
|Name of subsidiary                                                                        |  | Registered  office(1) |  | Direct/indirect  ownership |  | Share class through whichownership is held |  | Proportion ofownership interest
% |     |  | Ultimate proportion ofownership
% | 
|PSA Finance UK Limited                                                                    |  | M                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 50  | 
|Santander (CF Trustee Property Nominee) Limited                                           |  | D                     |  | Trust relationship         |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | -   | 
|Santander (CF Trustee) Limited                                                            |  | D                     |  | Trust relationship         |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | -   | 
|Santander (UK) Group Pension Scheme Trustees Limited                                      |  | D                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Asset Finance (December) Limited                                                |  | A                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|Santander Asset Finance plc                                                               |  | A                     |  | Direct                     |  | Ordinary £0.10                             |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Cards Limited                                                                   |  | A                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|Santander Cards UK Limited                                                                |  | A                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Consumer (UK) plc                                                               |  | B                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Consumer Credit Services Limited                                                |  | L                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|Santander Equity Investments Limited                                                      |  | A                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|Santander Estates Limited                                                                 |  | L                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Global Consumer Finance Limited                                                 |  | A                     |  | Indirect                   |  | Ordinary £0.0001                           |  |                                   | -   |  |                                   |  | 100 | 
|Santander Guarantee Company                                                               |  | A                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Lending Limited                                                                 |  | A                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Private Banking UK Limited                                                      |  | A                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Secretariat Services Limited                                                    |  | A                     |  | Indirect                   |  | A Ordinary US$0.01                         |  |                                   | -   |  |                                   |  | 100 | 
|Santander UK Foundation Limited                                                           |  | A                     |  | Direct                     |  | Guarantee ownership                        |  |                                   | 100 |  |                                   |  | 100 | 
|Sheppards Moneybrokers Limited                                                            |  | A                     |  | Indirect                   |  | Ordinary £1 Non-voting
Preference £1       |  |                                   | -   |  |                                   |  | 100 | 
|Solarlaser Limited                                                                        |  | A                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | 20  |  |                                   |  | 100 | 
|The Alliance & Leicester Corporation Limited                                              |  | A                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|The National & Provincial Building Society Pension Fund
Trustees Limited (in liquidation) |  | K                     |  | Trust relationship         |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|Time Retail Finance Limited (in liquidation)                                              |  | K                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|Tuttle and Son Limited                                                                    |  | A                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|Viking Collection Services Limited (in liquidation)                                       |  | K                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|(1)Refer to the key at the end of this section for the registered office address          | 
|Incorporated and registered outside England and Wales:                                    | 
|Name of subsidiary                                                                        |  | Registered  office(1) |  | Direct/indirect  ownership |  | Share class through whichownership is held |  | Proportion
ofownership interest % |     |  | Ultimate proportion ofownership
% | 
|A & L CF (Guernsey) Limited                                                               |  | F                     |  | Indirect                   |  | Ordinary £1                                |  |                                   | -   |  |                                   |  | 100 | 
|A&L Services Limited (in liquidation)                                                     |  | P                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Abbey Business Services (India) Private Limited                                           |  | N                     |  | Indirect                   |  | Ordinary INR 10                            |  |                                   | -   |  |                                   |  | 100 | 
|Abbey National International Limited                                                      |  | G                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|ALIL Services Limited                                                                     |  | P                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Carfax (Guernsey) Limited                                                                 |  | F                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Santander Cards Ireland Limited                                                           |  | Q                     |  | Indirect                   |  | Ordinary 1
Ordinary 1.27                 |  |                                   | -   |  |                                   |  | 100 | 
|Santander ISA Managers Limited                                                            |  | O                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 
|Sovereign Spirit Limited                                                                  |  | H                     |  | Indirect                   |  | Ordinary BMD 1                             |  |                                   | -   |  |                                   |  | 100 | 
|Whitewick Limited                                                                         |  | G                     |  | Direct                     |  | Ordinary £1                                |  |                                   | 100 |  |                                   |  | 100 | 

|(1) | Refer to the key at the end of this section for the registered office address, including the country
|--- | ----------------------------------------------------------------------------------------------------





270Santander UK plc



---

##### Table of Contents

| |  |  |  |                              |  |                 |  |                |  |         
| |  |  |  | ---------------------------- |  | --------------- |  | -------------- |  | --------
| |  |  |  |                              | 
| |  |  |  | Subsidiaries, joint ventures |  | Forward-looking |  | Selected       |  |         
| |  |  |  | and associates               |  | statements      |  | financial data |  | Glossary





Other subsidiary undertakings

All these entities are registered in England and Wales, except for Guaranteed Investment Products 1 PCC Limited which is registered in Guernsey. The Company and its
subsidiaries do not own directly, or indirectly, any of the share capital of any of the entities, however they are consolidated by the Santander UK group because the substance of the relationship indicates control, as described in Note 1 to the
Consolidated Financial Statements.



|                                             |  |                      |  |                                                |  |                     
|-------------------------------------------- |  | -------------------- |  | ---------------------------------------------- |  | --------------------
|Name of entity                               |  | Registered
office(1) |  | Name of entity                                 |  | Registered
office(1)
|Abbey Covered Bonds LLP                      |  | A                    |  | Langton Securities (2008-1) plc                |  | C                   
|Abbey Covered Bonds (LM) Limited             |  | J                    |  | Langton Securities (2010-1) plc                |  | C                   
|Abbey Covered Bonds (Holdings) Limited       |  | J                    |  | Langton Securities (2010-2) plc                |  | C                   
|Auto ABS UK Loans plc                        |  | C                    |  | Langton Securities (2012-1) plc                |  | C                   
|Fosse (Master Issuer) Holdings Limited       |  | C                    |  | Langton Securities Holdings Limited            |  | C                   
|Fosse Funding (No.1) Limited                 |  | C                    |  | MAC No. 1 Limited                              |  | A                   
|Fosse Master Issuer plc                      |  | C                    |  | Motor 2012 Holdings Limited (in liquidation)   |  | E                   
|Fosse PECOH Limited                          |  | C                    |  | Motor 2012 plc (in liquidation)                |  | E                   
|Fosse Trustee (UK) Limited                   |  | A                    |  | Motor 2013-1 Holdings Limited (in liquidation) |  | E                   
|Guaranteed Investment Products 1 PCC Limited |  | F                    |  | Motor 2013-1 plc (in liquidation)              |  | E                   
|HCUK Auto Funding 2015 Limited               |  | C                    |  | Motor 2014-1 Holdings Limited                  |  | C                   
|HCUK Auto Funding 2016-1 Limited             |  | C                    |  | Motor 2014-1 plc                               |  | C                   
|Holmes Funding Limited                       |  | A                    |  | Motor 2015-1 Holdings Limited                  |  | C                   
|Holmes Holdings Limited                      |  | A                    |  | Motor 2015-1 plc                               |  | C                   
|Holmes Master Issuer plc                     |  | A                    |  | Motor 2015-2 Holdings Limited                  |  | C                   
|Holmes Trustees Limited                      |  | A                    |  | Motor 2016-1 plc (formerly Motor 2015-2 plc)   |  | C                   
|Langton Funding (No.1) Limited               |  | C                    |  | Motor 2016-1M Limited                          |  | C                   
|Langton Mortgages Trustee (UK) Limited       |  | A                    |  | PECOH Limited                                  |  | A                   
|Langton PECOH Limited                        |  | C                    |  |                                                |  |                     

|(1) | Refer to the key at the end of this section for the registered office address
|--- | -----------------------------------------------------------------------------

Joint ventures and associates

All these entities are registered in England and Wales and are accounted for by the equity method of accounting.



|                           |  |                         |  |                           |  |                                             |  |                                       |    |  |                                   |  |    | 
|-------------------------- |  | ----------------------- |  | ------------------------- |  | ------------------------------------------- |  | ------------------------------------- | -- |  | --------------------------------- |  | -- | 
|Name of joint venture      |  | Registered    office(1) |  | Direct/indirect
ownership |  | Share class through which ownership is held |  | Proportion of    ownership interest
% |    |  | Ultimate proportion ofownership
% | 
|Hyundai Capital UK Limited |  | R                       |  | Indirect                  |  | Ordinary £1                                 |  |                                       | -  |  |                                   |  | 50 | 
|PSA UK Number 1 plc        |  | M                       |  | Direct                    |  | B Ordinary £1C Ordinary £1                  |  |                                       | 50 |  |                                   |  | 50 | 
|Syntheo Limited            |  | I                       |  | Direct                    |  | Ordinary £1                                 |  |                                       | 50 |  |                                   |  | 50 | 

|(1) | Refer to the key at the end of this section for the registered office address
|--- | -----------------------------------------------------------------------------

All entities are joint ventures, except
for PSA UK Number 1 plc which is an associate.

Overseas branches

Santander UK plc has branches in the Isle of Man and Jersey. Abbey National Treasury Services plc has branch offices in the US and the Cayman Islands.

Key of registered office addresses



|  |  |                                                                                  
|- |  | ---------------------------------------------------------------------------------
|A |  | 2 Triton Square, Regents Place, London NW1 3AN                                  
|B |  | Santander House, 86 Station Road, Redhill RH1 1SR                                
|C |  | 35 Great St. Helens, London EC3A 6AP                                            
|D |  | Santander House, 201 Grafton Gate East, Milton Keynes MK9 1AN                    
|E |  | The Shard, 32 London Bridge Street, London SE1 9SG                               
|F |  | Fourth Floor, The Albany, South Esplanade, St. Peter Port, Guernsey GY1 4NF      
|G |  | 19-21 Commercial Street, St. Helier, Jersey JE2 3RU                              
|H |  | Clarendon House, 2 Church Street, Hamilton HM11, Bermuda                         
|I |  | Medius House, 2 Sheraton Street, London W1F 8BH                                  
|J |  | Wilmington Trust SP Services (London) Limited, 1 Kings Arms Yard, London EC2R 7AF
|K |  | Griffins, Tavistock House South, Tavistock Square, London WC1H 9LG               
|L |  | Building 3, Floor 2, Carlton Park, Narborough, Leicester LE19 0AL                
|M |  | Quadrant House, Princess Way, Redhill RH1 1QA                                    
|N |  | The Residency, 7th Floor, 133/1 Residency Road, Bangalore, KA 560 025, India     
|O |  | 287 St. Vincent Street, Glasgow, Scotland G2 5NB                                 
|P |  | 19/21 Prospect Hill, Douglas, Isle of Man IM99 1RY                               
|Q |  | 25/28 North Wall Quay, Dublin 1, Ireland                                         
|R |  | London Court, 39 London Road, Reigate RH2 9AQ                                    





Santander UK plc271



---

##### Table of Contents



Annual Report 2016

Shareholder
information









Forward-looking statements

The Company and its subsidiaries (together Santander UK) may from time to time make written or oral forward-looking statements. The Company makes written forward-looking
statements in this Annual Report and may also make forward-looking statements in its periodic reports to the SEC on Forms 20-F and 6-K, in its offering circulars and prospectuses, in press releases and other written materials and in oral statements
made by its officers, directors or employees to third parties. Examples of such forward-looking statements include, but are not limited to:

| | - | Projections or expectations of revenues, costs, profit (or loss), earnings (or loss) per share, dividends, capital structure or other financial items or ratios
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Statements of plans, objectives or goals of Santander UK or its management, including those related to products or services
| | - | ---------------------------------------------------------------------------------------------------------------------------

| | - | Statements of future economic performance, and
| | - | ----------------------------------------------

| | - | Statements of assumptions underlying such statements.
| | - | -----------------------------------------------------

Words such as believes, anticipates,
expects, intends, aims, plans, targets and similar expressions are intended to identify forward-looking statements, but are not the exclusive means of identifying such statements.

By their very nature, forward-looking statements are not statements of historical or current facts; they cannot be objectively verified, are speculative and involve
inherent risks and uncertainties, both general and specific, and risks exist that the predictions, forecasts, projections and other forward-looking statements will not be achieved. Santander UK cautions readers that a number of important factors
could cause actual results to differ materially from the plans, objectives, expectations, estimates and intentions expressed in such forward-looking statements made by Santander UK or on its behalf. Some of these factors, which could affect
Santander UKs business, financial condition and/or results of operation, are considered in detail in the Risk review, and they include:



| | - | the disruptions and volatility in the global financial markets
| | - | --------------------------------------------------------------

| | - | the effects of UK economic conditions
| | - | -------------------------------------

| | - | Santander UKs exposure to UK political developments, including the outcome of the UK referendum on membership of the EU
| | - | ------------------------------------------------------------------------------------------------------------------------

| | - | the effects of the financial services laws, regulations, governmental oversight, administrative actions and policies and any changes thereto in each location or market in which Santander UK operates
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the effects of any new reforms to the UK mortgage lending market
| | - | ----------------------------------------------------------------

| | - | Santander UKs exposure to any risk of loss from legal and regulatory proceedings
| | - | ---------------------------------------------------------------------------------

| | - | the power of the FCA, the PRA, the CMA or an overseas regulator to potentially intervene in response to e.g. attempts by customers to seek redress from financial service institutions, including Santander UK, in case of
industry-wide issues
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the effects which the Banking Act 2009 may have on Santander UKs business and the value of securities issued
| | - | -------------------------------------------------------------------------------------------------------------

| | - | the effects which the bail-in and write down powers under the Banking Act 2009 and the BRRD may have on Santander UKs business and the value of securities issued
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the extent to which regulatory capital and leverage requirements and any changes to these requirements may limit and adversely affect Santander UKs operations
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Santander UKs ability to access liquidity and funding on acceptable financial terms
| | - | ------------------------------------------------------------------------------------

| | - | the extent to which liquidity requirements and any changes to these requirements may limit and adversely affect Santander UKs operations
| | - | -----------------------------------------------------------------------------------------------------------------------------------------

| | - | Santander UKs exposure to UK Government debt
| | - | ---------------------------------------------

| | - | the effects of the ongoing political, economic and sovereign debt tensions in the eurozone
| | - | ------------------------------------------------------------------------------------------

| | - | Santander UKs exposure to risks faced by other financial institutions
| | - | ----------------------------------------------------------------------

| | - | the effects of an adverse movement in external credit rating assigned to Santander UK, any Santander UK member or any of their respective debt securities
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the effects of fluctuations in interest rates and other market risks
| | - | --------------------------------------------------------------------

| | - | the extent to which Santander UK may be required to record negative fair value adjustments for its financial assets due to changes in market conditions
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the risk of failing to successfully implement and continue to improve Santander UKs credit risk management systems
| | - | -------------------------------------------------------------------------------------------------------------------

| | - | the risks associated with Santander UKs derivative transactions
| | - | ----------------------------------------------------------------

| | - | the extent to which Santander UK may be exposed to operational risks, including risks relating to data and information collection, processing, storage and security
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the risk of third parties using Santander UK as a conduit for illegal or improper activities without Santander UKs knowledge
| | - | -----------------------------------------------------------------------------------------------------------------------------

| | - | the risk of failing to effectively improve or upgrade Santander UKs information technology infrastructure and management information systems in a timely manner
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Santander UKs exposure to unidentified or unanticipated risks despite its risk management policies, procedures and methods
| | - | ---------------------------------------------------------------------------------------------------------------------------

| | - | the effects of competition with other financial institutions
| | - | ------------------------------------------------------------

| | - | the various risks facing Santander UK as it expands its range of products and services (e.g. risk of new products and services not being responsive to customer demands or successful, risk of changing customer needs)
| | - | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Santander UKs ability to control the level of non-performing or poor credit quality loans and whether Santander UKs loan loss reserves are sufficient to cover loan losses
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the extent to which Santander UKs loan portfolio is subject to prepayment risk
| | - | -------------------------------------------------------------------------------

| | - | the risk that the value of the collateral, including real estate, securing Santander UKs loans may not be sufficient and Santander UK may be unable to realise the full value of the collateral securing its loan
portfolio
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the ability of Santander UK to realise the anticipated benefits of its organic growth or business combinations and the exposure, if any, of Santander UK to any unknown liabilities or goodwill impairments relating to
acquired businesses
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the extent to which members of Santander UK may be responsible for contributing to compensation schemes in the UK in respect of banks and other authorised financial services firms that are unable to meet their
obligations to customers
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the effects of taxation requirements and other assessments and any changes thereto in each location in which Santander UK operates
| | - | ----------------------------------------------------------------------------------------------------------------------------------

| | - | the effects of any changes in the pension liabilities and obligations of Santander UK
| | - | -------------------------------------------------------------------------------------

| | - | the ability of Santander UK to recruit, retain and develop appropriate senior management and skilled personnel
| | - | --------------------------------------------------------------------------------------------------------------

| | - | the effects of any changes to the reputation of Santander UK, any Santander UK member or any affiliate operating under the Santander UK brands
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------

| | - | the basis of the preparation of the Companys and Santander UKs financial statements and information available about Santander UK, including the extent to which assumptions and estimates made during such
preparation are accurate
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the extent to which disclosure controls and procedures over financial reporting may not prevent or detect all errors or acts of fraud
| | - | -------------------------------------------------------------------------------------------------------------------------------------

| | - | the extent to which changes in accounting standards could impact Santander UKs reported earnings
| | - | -------------------------------------------------------------------------------------------------

| | - | the extent to which Santander UK relies on third parties and affiliates for important infrastructure support, products and services
| | - | -----------------------------------------------------------------------------------------------------------------------------------

| | - | the possibility of risk arising in the future in relation to transactions between the Company and its parent, subsidiaries or affiliates
| | - | ----------------------------------------------------------------------------------------------------------------------------------------

| | - | the extent to which different disclosure and accounting principles between the UK and the US may provide you with different or less information about us than you expected, and
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | the risk associated with enforcement of judgments in the US.
| | - | ------------------------------------------------------------

Please refer to our latest filings with the SEC (including,
without limitation, our Annual Report on Form 20-F for the year ended 31 December 2016) for a discussion of certain risk factors and forward-looking statements. Undue reliance should not be placed on forward-looking statements when making
decisions with respect to any Santander UK member and/or its securities. Investors and others should take into account the inherent risks and uncertainties of forward-looking statements and should carefully consider the foregoing non-exhaustive list
of important factors. Forward-looking statements speak only as of the date on which they are made and are based on the knowledge, information available and views taken on the date on which they are made; such knowledge, information and views may
change at any time. Santander UK does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.





272Santander UK plc



---

##### Table of Contents

| |  |  |  |                              |  |                 |  |                |  |         
| |  |  |  | ---------------------------- |  | --------------- |  | -------------- |  | --------
| |  |  |  |                              | 
| |  |  |  | Subsidiaries, joint ventures |  | Forward-looking |  | Selected       |  |         
| |  |  |  | and associates               |  | statements      |  | financial data |  | Glossary





Selected financial data

The financial information set forth below for the years ended 31 December 2016, 2015 and 2014 and at 31 December 2016 and 2015 has been derived from the
audited Consolidated Financial Statements of Santander UK plc (the Company) and its subsidiaries (together, the Santander UK group) prepared in accordance with IFRS included elsewhere in this Annual Report. The information should be read in
connection with, and is qualified in its entirety by reference to, the Santander UK groups Consolidated Financial Statements and the notes thereto.

Financial
information set forth below for the years ended 31 December 2013 and 2012, and at 31 December 2014 and 2013 has been derived from the audited Consolidated Financial Statements of the Santander UK group for 2014, not included in this Annual Report.

Financial information set forth below at 31 December 2012 has been derived from the audited Consolidated Financial Statements for the year ended 31 December
2012 with adjustment for the adoption of IFRIC 21 of the Santander UK group not included in this Annual Report.

The financial information in this selected
consolidated financial and statistical data does not constitute statutory accounts within the meaning of the Companies Act 2006.

The auditors report on the
Consolidated Financial Statements for each of the five years ended 31 December 2016 was unmodified and did not include a statement under sections 237(2) and 237(3) of the Companies Act 1985 or sections 498(2) and 498(3) of the Companies Act
2006, as applicable. The Consolidated Financial Statements of the Santander UK group at 31 December 2016 were audited by PwC LLP, 2015, 2014, 2013 and 2012 were audited by Deloitte LLP.

BALANCE SHEETS



|                                               |  |              |         |  |         |  |         |         |  |  |         |  |  |         |         |  |         |  |         |  |  |  |         | 
|---------------------------------------------- |  | ------------ | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  | ------- | ------- |  | ------- |  | ------- |  |  |  | ------- | 
|                                               |  | 2016(1)
US$m |         |  | 2016
£m |  |         | 2015
£m |  |  | 2014
£m |  |  | 2013
£m |         |  | 2012
£m | 
|Assets                                         |  |              |         |  |         |  |         |         |  |  |         |  |  |         |         |  |         |  |         |  |  |  |         | 
|Cash and balances at central banks             |  |              | 21,105  |  |         |  | 17,107  |         |  |  | 16,842  |  |  |         | 22,562  |  |         |  | 26,374  |  |  |  | 29,282  | 
|Trading assets                                 |  |              | 37,054  |  |         |  | 30,035  |         |  |  | 23,961  |  |  |         | 21,700  |  |         |  | 22,294  |  |  |  | 22,498  | 
|Derivative financial instruments               |  |              | 31,424  |  |         |  | 25,471  |         |  |  | 20,911  |  |  |         | 23,021  |  |         |  | 20,049  |  |  |  | 30,146  | 
|Financial assets designated at fair value      |  |              | 2,640   |  |         |  | 2,140   |         |  |  | 2,398   |  |  |         | 2,881   |  |         |  | 2,747   |  |  |  | 3,811   | 
|Loans and advances to banks                    |  |              | 5,364   |  |         |  | 4,348   |         |  |  | 3,548   |  |  |         | 2,057   |  |         |  | 2,347   |  |  |  | 2,438   | 
|Loans and advances to customers                |  |              | 246,417 |  |         |  | 199,738 |         |  |  | 198,045 |  |  |         | 188,691 |  |         |  | 184,587 |  |  |  | 190,782 | 
|Loans and receivables securities               |  |              | 317     |  |         |  | 257     |         |  |  | 52      |  |  |         | 118     |  |         |  | 1,101   |  |  |  | 1,259   | 
|Available for sale securities                  |  |              | 13,029  |  |         |  | 10,561  |         |  |  | 9,012   |  |  |         | 8,944   |  |         |  | 5,005   |  |  |  | 5,483   | 
|Held-to-maturity investments(1)                |  |              | 8,202   |  |         |  | 6,648   |         |  |  | -       |  |  |         | -       |  |         |  | -       |  |  |  | -       | 
|Macro hedge of interest rate risk              |  |              | 1,355   |  |         |  | 1,098   |         |  |  | 781     |  |  |         | 963     |  |         |  | 769     |  |  |  | 1,222   | 
|Interests in other entities                    |  |              | 75      |  |         |  | 61      |         |  |  | 48      |  |  |         | 38      |  |         |  | 27      |  |  |  | 8       | 
|Intangible assets                              |  |              | 2,857   |  |         |  | 2,316   |         |  |  | 2,231   |  |  |         | 2,187   |  |         |  | 2,335   |  |  |  | 2,325   | 
|Property, plant and equipment                  |  |              | 1,839   |  |         |  | 1,491   |         |  |  | 1,597   |  |  |         | 1,624   |  |         |  | 1,521   |  |  |  | 1,541   | 
|Current tax assets                             |  |              | -       |  |         |  | -       |         |  |  | 49      |  |  |         | -       |  |         |  | 114     |  |  |  | 50      | 
|Deferred tax assets                            |  |              | -       |  |         |  | -       |         |  |  | -       |  |  |         | -       |  |         |  | 16      |  |  |  | 34      | 
|Retirement benefit assets                      |  |              | 491     |  |         |  | 398     |         |  |  | 556     |  |  |         | 315     |  |         |  | 118     |  |  |  | 254     | 
|Other assets                                   |  |              | 1,817   |  |         |  | 1,473   |         |  |  | 1,375   |  |  |         | 876     |  |         |  | 882     |  |  |  | 1,885   | 
|Total assets                                   |  |              | 373,986 |  |         |  | 303,142 |         |  |  | 281,406 |  |  |         | 275,977 |  |         |  | 270,286 |  |  |  | 293,018 | 
|Liabilities                                    |  |              |         |  |         |  |         |         |  |  |         |  |  |         |         |  |         |  |         |  |  |  |         | 
|Deposits by banks                              |  |              | 12,052  |  |         |  | 9,769   |         |  |  | 8,278   |  |  |         | 8,214   |  |         |  | 8,696   |  |  |  | 9,935   | 
|Deposits by customers                          |  |              | 218,577 |  |         |  | 177,172 |         |  |  | 164,074 |  |  |         | 153,606 |  |         |  | 147,167 |  |  |  | 149,037 | 
|Trading liabilities                            |  |              | 19,196  |  |         |  | 15,560  |         |  |  | 12,722  |  |  |         | 15,333  |  |         |  | 21,278  |  |  |  | 21,109  | 
|Derivative financial instruments               |  |              | 28,502  |  |         |  | 23,103  |         |  |  | 21,508  |  |  |         | 22,732  |  |         |  | 18,863  |  |  |  | 28,861  | 
|Financial liabilities designated at fair value |  |              | 3,010   |  |         |  | 2,440   |         |  |  | 2,016   |  |  |         | 2,848   |  |         |  | 3,407   |  |  |  | 4,002   | 
|Debt securities in issue                       |  |              | 62,112  |  |         |  | 50,346  |         |  |  | 49,615  |  |  |         | 51,790  |  |         |  | 50,870  |  |  |  | 59,621  | 
|Subordinated liabilities                       |  |              | 5,309   |  |         |  | 4,303   |         |  |  | 3,885   |  |  |         | 4,002   |  |         |  | 4,306   |  |  |  | 3,781   | 
|Macro hedge of interest rate risk              |  |              | 432     |  |         |  | 350     |         |  |  | 110     |  |  |         | 139     |  |         |  | -       |  |  |  | -       | 
|Other liabilities                              |  |              | 3,542   |  |         |  | 2,871   |         |  |  | 2,335   |  |  |         | 2,302   |  |         |  | 1,883   |  |  |  | 2,526   | 
|Provisions                                     |  |              | 864     |  |         |  | 700     |         |  |  | 870     |  |  |         | 491     |  |         |  | 550     |  |  |  | 795     | 
|Current tax liabilities                        |  |              | 67      |  |         |  | 54      |         |  |  | 1       |  |  |         | 69      |  |         |  | 4       |  |  |  | 4       | 
|Deferred tax liabilities                       |  |              | 158     |  |         |  | 128     |         |  |  | 223     |  |  |         | 59      |  |         |  | -       |  |  |  | -       | 
|Retirement benefit obligations                 |  |              | 323     |  |         |  | 262     |         |  |  | 110     |  |  |         | 199     |  |         |  | 672     |  |  |  | 305     | 
|Total liabilities                              |  |              | 354,144 |  |         |  | 287,058 |         |  |  | 265,747 |  |  |         | 261,784 |  |         |  | 257,696 |  |  |  | 279,976 | 
|Equity                                         |  |              |         |  |         |  |         |         |  |  |         |  |  |         |         |  |         |  |         |  |  |  |         | 
|Share capital and other equity instruments     |  |              | 6,050   |  |         |  | 4,904   |         |  |  | 4,911   |  |  |         | 4,244   |  |         |  | 3,709   |  |  |  | 3,999   | 
|Share premium                                  |  |              | 6,933   |  |         |  | 5,620   |         |  |  | 5,620   |  |  |         | 5,620   |  |         |  | 5,620   |  |  |  | 5,620   | 
|Retained earnings                              |  |              | 6,028   |  |         |  | 4,886   |         |  |  | 4,679   |  |  |         | 4,056   |  |         |  | 3,377   |  |  |  | 3,405   | 
|Other reserves                                 |  |              | 646     |  |         |  | 524     |         |  |  | 314     |  |  |         | 273     |  |         |  | (116)   |  |  |  | 18      | 
|Total shareholders equity                     |  |              | 19,657  |  |         |  | 15,934  |         |  |  | 15,524  |  |  |         | 14,193  |  |         |  | 12,590  |  |  |  | 13,042  | 
|Non-controlling interests                      |  |              | 185     |  |         |  | 150     |         |  |  | 135     |  |  |         | -       |  |         |  | -       |  |  |  | -       | 
|Total equity                                   |  |              | 19,842  |  |         |  | 16,084  |         |  |  | 15,659  |  |  |         | 14,193  |  |         |  | 12,590  |  |  |  | 13,042  | 
|Total liabilities and equity                   |  |              | 373,986 |  |         |  | 303,142 |         |  |  | 281,406 |  |  |         | 275,977 |  |         |  | 270,286 |  |  |  | 293,018 | 

|(1) | In 2016, Santander UK plc purchased a portfolio of UK Government gilts which have been classified as held-to-maturity investments. For more information, see the Balance sheet review.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





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Annual Report 2016

Shareholder
information









INCOME
STATEMENTS



|                                                                    |  |              |         |  |         |  |         |         |  |  |         |  |  |         |         |  |         |  |         |  |  |  |         | 
|------------------------------------------------------------------- |  | ------------ | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  | ------- | ------- |  | ------- |  | ------- |  |  |  | ------- | 
|                                                                    |  | 2016(1)
US$m |         |  | 2016
£m |  |         | 2015
£m |  |  | 2014
£m |  |  | 2013
£m |         |  | 2012
£m | 
|Net interest income                                                 |  |              | 4,419   |  |         |  | 3,582   |         |  |  | 3,575   |  |  |         | 3,434   |  |         |  | 2,963   |  |  |  | 2,734   | 
|Net fee and commission income                                       |  |              | 950     |  |         |  | 770     |         |  |  | 715     |  |  |         | 739     |  |         |  | 758     |  |  |  | 861     | 
|Net trading and other income                                        |  |              | 547     |  |         |  | 443     |         |  |  | 283     |  |  |         | 297     |  |         |  | 308     |  |  |  | 1,088   | 
|Total operating income                                              |  |              | 5,916   |  |         |  | 4,795   |         |  |  | 4,573   |  |  |         | 4,470   |  |         |  | 4,029   |  |  |  | 4,683   | 
|Operating expenses before impairment losses, provisions and
charges |  |              | (2,978) |  |         |  | (2,414) |         |  |  | (2,400) |  |  |         | (2,397) |  |         |  | (2,195) |  |  |  | (2,114) | 
|Impairment losses on loans and advances                             |  |              | (83)    |  |         |  | (67)    |         |  |  | (66)    |  |  |         | (258)   |  |         |  | (475)   |  |  |  | (988)   | 
|Provisions for other liabilities and charges                        |  |              | (490)   |  |         |  | (397)   |         |  |  | (762)   |  |  |         | (416)   |  |         |  | (250)   |  |  |  | (429)   | 
|Total operating impairment losses, provisions and
charges           |  |              | (573)   |  |         |  | (464)   |         |  |  | (828)   |  |  |         | (674)   |  |         |  | (725)   |  |  |  | (1,417) | 
|Profit from continuing operations before tax                        |  |              | 2,365   |  |         |  | 1,917   |         |  |  | 1,345   |  |  |         | 1,399   |  |         |  | 1,109   |  |  |  | 1,152   | 
|Tax on profit from continuing operations                            |  |              | (738)   |  |         |  | (598)   |         |  |  | (381)   |  |  |         | (289)   |  |         |  | (211)   |  |  |  | (271)   | 
|Profit from continuing operations after tax                         |  |              | 1,627   |  |         |  | 1,319   |         |  |  | 964     |  |  |         | 1,110   |  |         |  | 898     |  |  |  | 881     | 
|(Loss)/profit from discontinued operations after tax                |  |              | -       |  |         |  | -       |         |  |  | -       |  |  |         | -       |  |         |  | (8)     |  |  |  | 62      | 
|Profit after tax for the year                                       |  |              | 1,627   |  |         |  | 1,319   |         |  |  | 964     |  |  |         | 1,110   |  |         |  | 890     |  |  |  | 943     | 
|                                                                    |  |              |         |  |         | 
|Attributable to:                                                    |  |              |         |  |         |  |         |         |  |  |         |  |  |         |         |  |         |  |         |  |  |  |         | 
|Equity holders of the parent                                        |  |              | 1,594   |  |         |  | 1,292   |         |  |  | 939     |  |  |         | 1,110   |  |         |  | 890     |  |  |  | 943     | 
|Non-controlling interests                                           |  |              | 33      |  |         |  | 27      |         |  |  | 25      |  |  |         | -       |  |         |  | -       |  |  |  | -       | 

|(1) | Amounts stated in US dollars have been translated from sterling at the rate of £1.00 - US$1.2337, the noon buying rate on 31 December 2016.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------

EXCHANGE RATES

The following tables set forth, for the
periods indicated, certain information concerning the exchange rate for pounds sterling based on the noon buying rate in New York City for cable transfers in foreign currencies, as certified for customs purposes by the Federal Reserve Bank of New
York, expressed in US dollars per £1.00. No representation is made that amounts in pounds sterling have been, could have been or could be converted into US dollars at the noon buying rate or at any other rate. The noon buying rate for US
dollars on 24 February 2017 was US$1.25.



|                         |  |               |      |  |              |  |      |                      |  |  |                     |  |  |  |      | 
|------------------------ |  | ------------- | ---- |  | ------------ |  | ---- | -------------------- |  |  | ------------------- |  |  |  | ---- | 
|Calendar period          |  | High
US$ Rate |      |  | Low
US$ Rate |  |      | Average (1)
US$ Rate |  |  | Period-end
US$ Rate | 
|Years ended 31 December: |  |               |      |  |              |  |      |                      |  |  |                     |  |  |  |      | 
|2016                     |  |               | 1.48 |  |              |  | 1.22 |                      |  |  | 1.34                |  |  |  | 1.23 | 
|2015                     |  |               | 1.59 |  |              |  | 1.46 |                      |  |  | 1.53                |  |  |  | 1.47 | 
|2014                     |  |               | 1.72 |  |              |  | 1.55 |                      |  |  | 1.65                |  |  |  | 1.56 | 
|2013                     |  |               | 1.66 |  |              |  | 1.48 |                      |  |  | 1.56                |  |  |  | 1.66 | 
|2012                     |  |               | 1.63 |  |              |  | 1.53 |                      |  |  | 1.59                |  |  |  | 1.63 | 
|Months ended:            |  |               |      |  |              |  |      |                      |  |  |                     |  |  |  |      | 
|February 2017 (2)        |  |               | 1.26 |  |              |  | 1.24 |                      |  |  | 1.25                |  |  |  | 1.25 | 
|January 2017             |  |               | 1.26 |  |              |  | 1.21 |                      |  |  | 1.24                |  |  |  | 1.26 | 
|December 2016            |  |               | 1.27 |  |              |  | 1.22 |                      |  |  | 1.25                |  |  |  | 1.23 | 
|November 2016            |  |               | 1.25 |  |              |  | 1.22 |                      |  |  | 1.24                |  |  |  | 1.25 | 
|October 2016             |  |               | 1.28 |  |              |  | 1.22 |                      |  |  | 1.23                |  |  |  | 1.22 | 
|September 2016           |  |               | 1.34 |  |              |  | 1.30 |                      |  |  | 1.31                |  |  |  | 1.30 | 
|August 2016              |  |               | 1.33 |  |              |  | 1.29 |                      |  |  | 1.31                |  |  |  | 1.31 | 

|(1) | The average of the noon buying rates on the last business day of each month during the relevant period.
|--- | -------------------------------------------------------------------------------------------------------

|(2) | For February 2017, for the period from 1 February to 24 February.
|--- | -----------------------------------------------------------------

SELECTED STATISTICAL
INFORMATION



|                                           |  |        |      |  |        |  |      |        |  |  |        |  |  |        |      |  |  |  |      | 
|------------------------------------------ |  | ------ | ---- |  | ------ |  | ---- | ------ |  |  | ------ |  |  | ------ | ---- |  |  |  | ---- | 
|                                           |  | 2016
% |      |  | 2015
% |  |      | 2014
% |  |  | 2013
% |  |  | 2012
% |     
|Capital ratios:                            |  |        |      |  |        |  |      |        |  |  |        |  |  |        |      |  |  |  |      | 
|CET1 capital ratio(1)                      |  |        | 11.6 |  |        |  | 11.6 |        |  |  | 11.9   |  |  |        | n/a  |  |  |  | n/a  | 
|Total capital ratio                        |  |        | 18.5 |  |        |  | 18.2 |        |  |  | 17.9   |  |  |        | n/a  |  |  |  | n/a  | 
|Equity to assets ratio(2)                  |  |        | 4.60 |  |        |  | 4.68 |        |  |  | 4.48   |  |  |        | 4.10 |  |  |  | 3.91 | 
|Ratio of earnings to fixed
charges:(3)     |  |        |      |  |        |  |      |        |  |  |        |  |  |        |      |  |  |  |      | 
|- Excluding interest on retail deposits    |  |        | 292  |  |        |  | 218  |        |  |  | 208    |  |  |        | 172  |  |  |  | 165  | 
|- Including interest on retail deposits    |  |        | 166  |  |        |  | 143  |        |  |  | 142    |  |  |        | 126  |  |  |  | 125  | 
|Profitability ratios:                      |  |        |      |  |        |  |      |        |  |  |        |  |  |        |      |  |  |  |      | 
|Return on assets(4)                        |  |        | 0.44 |  |        |  | 0.34 |        |  |  | 0.40   |  |  |        | 0.30 |  |  |  | 0.31 | 
|Return on ordinary shareholders equity(5) |  |        | 9.3  |  |        |  | 7.0  |        |  |  | 8.9    |  |  |        | 7.4  |  |  |  | 7.9  | 
|Dividend payout
ratio(6)                   |  |        | 46   |  |        |  | 51   |        |  |  | 44     |  |  |        | 48   |  |  |  | 48   | 

|(1) | Regulatory capital is calculated in accordance with the requirements of CRD IV, following the adoption of CRD IV with effect from 1 January 2014.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Average ordinary shareholders equity divided by average total assets. Average balances are based on monthly data.
|--- | ------------------------------------------------------------------------------------------------------------------

|(3) | For the purpose of calculating the ratios of earnings to fixed charges, earnings consist of profit from continuing operations before tax and before adjustment for non-controlling interests plus fixed charges. Fixed
charges consist of interest expense, including the amortisation of discounts and premiums on debt securities in issue and related capitalised expenses and including or excluding interest on retail deposit as appropriate.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Profit after tax divided by average total assets. Average balances are based on monthly data.
|--- | ---------------------------------------------------------------------------------------------

|(5) | Profit after tax divided by average ordinary shareholders equity.
|--- | ------------------------------------------------------------------

|(6) | Ordinary equity dividends approved divided by profit after tax attributable to equity holders of the parent.
|--- | ------------------------------------------------------------------------------------------------------------





274Santander UK plc



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##### Table of Contents

|        |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------- |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|        |  |                    |  |              |  |             |  |     
|Risk    |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|Factors |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





Other information for US investors





|    |  |                                                        
|--- |  | -------------------------------------------------------
|276 |  | Risk factors                                           
|    |  |                                                        
|299 |  | Risk elements in the loan portfolio                    
|    |  |                                                        
|302 |  | Taxation for US investors                              
|    |  |                                                        
|303 |  | Articles of Association                                
|    |  |                                                        
|304 |  | Iran Threat Reduction and Syria Human Rights Act (ITRA)
|    |  |                                                        
|305 |  | New York Stock Exchange (NYSE) Corporate Governance    
|    |  |                                                        
|306 |  | Glossary                                               
|    |  |                                                        
|311 |  | Contact and other information                          
|    |  |                                                        
|312 |  | Cross-reference to Form 20-F                           
|    |  |                                                        





Santander UK plc275



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Annual Report 2016

Other
information for US investors









Risk factors

An investment in Santander UK plc
(the Company) and its subsidiaries (us, we, our or the Santander UK group) involves a number of risks, the material ones of which are set out below.

We are vulnerable to disruptions and volatility in the global financial markets

Over the past nine years, financial systems worldwide have
experienced difficult credit and liquidity conditions and disruptions leading to periods of reduced liquidity, greater volatility (such as volatility in spreads) and, in some cases, a lack of price transparency on interbank lending rates.
Uncertainties remain concerning the outlook and the future economic environment, including in the United Kingdom (the UK) and in Europe. Investors remain cautious and a slowing or failing of the economic recovery would likely aggravate the adverse
effects of difficult economic and market conditions on us and on others in the financial services industry. In particular, we may face, among others, the following risks related to any future economic downturn:

|- | Increased regulation of our industry. Compliance with such regulation will continue to increase our costs, may affect the pricing of our products and services, increase our conduct and regulatory risks related to
non-compliance and limit our ability to pursue business opportunities
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Reduced demand for our products and services
|- | --------------------------------------------



|- | Inability of our borrowers to comply fully or in a timely manner with their existing obligations
|- | ------------------------------------------------------------------------------------------------



|- | The process we use to estimate losses inherent in our credit exposure requires complex judgements, including forecasts of economic conditions and how such economic conditions may impair the ability of our borrowers to
repay their loans
|- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | The degree of uncertainty concerning economic conditions may adversely affect the accuracy of our estimates, which may, in turn, impact the reliability of the process and the sufficiency of our loan loss allowances
|- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | The value and liquidity of the portfolio of investment securities that we hold may be adversely affected
|- | --------------------------------------------------------------------------------------------------------



|- | Any worsening of global economic conditions may delay the recovery of the international financial industry and impact our operating results, financial condition and prospects
|- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|- | Adverse macroeconomic shocks may negatively impact the household income of our retail customers, which may adversely affect the recoverability of our retail loans, and result in increased loan losses.
|- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Financial markets in the past twelve months have been affected by a series of political events, including the UKs vote in June 2016 to leave the EU, which caused
significant volatility in the global stock and foreign exchange markets (for more information, see the risk factor entitled Exposure to UK political developments, including the outcome of the UK referendum on membership of the EU, could have a
material adverse effect on us) and there has been an increase in anti-EU sentiment in other EU member states (EU Member States). Further, there is significant uncertainty as to the respective legal and regulatory environments in which we and
our subsidiaries will operate going forward as a result of the UKs vote to leave the European Union (EU). Such uncertainties have had, and may continue to have, a negative impact on macroeconomic conditions and our business, financial
condition and results of operations, and there can be no assurance that the European and global economic environments will not continue to be affected by political developments, including elections in 2017 in key EU Member States (for more
information, see the risk factor entitled We may suffer adverse effects as a result of the political, economic and sovereign debt tensions in the eurozone).

Continued or worsening disruption and volatility in the global financial markets could have a material adverse effect on us, including our ability to access capital and
liquidity on financial terms acceptable to us, if at all. If capital markets financing ceases to become available, or becomes excessively expensive, we may be forced to raise the rates we pay on deposits to attract more customers. Any such increase
in capital markets funding costs or deposit rates could have a material adverse effect on our interest margins, liquidity and profitability, particularly given the sustained low interest rate environment expected in the medium term following the
UKs vote to leave the EU.

If all or some of the foregoing risks were to materialise, this could have a material adverse effect on us.

Our operating results, financial condition and prospects may be materially impacted by economic conditions in the UK

Our business activities are concentrated in the UK where we offer a range of banking and financial products and services to UK retail and corporate customers. As a
consequence, our operating results, financial condition and prospects are significantly affected by the economic conditions in the UK.

Our financial performance is
intrinsically linked to the UK economy and the economic prosperity and confidence of consumers and businesses. The sustainability of the UK economic recovery, along with its associated impacts on our profitability, remains a risk. Conversely, a
strengthened UK economic performance may increase the possibility of a higher interest rate environment. In such a scenario, there is a risk that other market participants might offer more competitive product pricing resulting in increased customer
attrition.

Adverse changes in EU and global growth may pose the risk of a further slowdown in the UKs principal export markets which would have an adverse
effect on the broader UK economy.

In addition, adverse changes in the credit quality of our borrowers and counterparties or a general deterioration in UK, EU or
global economic conditions could reduce the recoverability and value of our assets and require an increase in our level of provisions for bad and doubtful debts. Likewise, a significant reduction in the demand for our products and services could
negatively impact our business and financial performance. UK economic conditions and uncertainties may have an adverse effect on the quality of our loan portfolio and may result in a rise in delinquency and default rates. There can be no assurance
that we will not have to increase our provisions for loan losses in the future as a result of increases in non-performing loans and/or for other reasons beyond our control. Material increases in our provisions for loan losses and
write-offs/charge-offs could have an adverse effect on our operating results, financial condition and prospects. Any related significant reduction in the demand for our products and services could have a material adverse effect on our operating
results, financial condition and prospects.





276Santander UK plc



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|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





Exposure to UK political developments, including the outcome of the UK
referendum on membership of the EU, could have a material adverse effect on us

On 23 June 2016, the UK held a non-binding referendum (the UK EU
Referendum) on its membership in the EU, in which a majority voted for the UK to leave the EU. Immediately following the result, the UK and global stock and foreign exchange markets commenced a period of significant volatility, including a steep
devaluation of the pound sterling, in addition to which there is now continuing uncertainty relating to the process, timing and negotiation of the UKs exit from, and future relationship with, the EU.

On 2 October 2016, the UK Prime Minister announced that her government would commence the exit process by the end of March 2017. The UK Supreme Court ruled on
24 January 2017 that commencement of the exit process must be approved by the UK Parliament. On 1 February 2017, the House of Commons voted to give the Prime Minister the power to notify under Article 50(2) of the Treaty on European Union,
the UKs intention to withdraw from the EU. Once the exit process is triggered, a two year period of negotiation will begin to determine the new terms of the UKs relationship with the EU, after which period its EU membership will cease.
These negotiations are expected to run in parallel to standalone bilateral negotiations with the numerous individual countries and multilateral counterparties with which the UK currently has trading arrangements by virtue of its membership of the
EU. The timing of, and process for, such negotiations and the resulting terms of the UKs future economic, trading and legal relationships are uncertain.

While
the longer term effects of the UK EU Referendum are difficult to predict, these are likely to include further financial instability and slower economic growth as well as higher unemployment and inflation, in the UK, continental Europe and the global
economy, at least in the short to medium term. For instance, the UK could lose access to the single EU market and to the global trade deals negotiated by the EU on behalf of its members and this could affect the attractiveness of the UK as a global
investment centre and, as a result, could have a detrimental impact on UK growth. Potential further decreases in interest rates by the Bank of England or sustained low or negative interest rates would put further pressure on our interest margins and
adversely affect our profitability and prospects.

The UK EU Referendum has also given rise to calls for certain regions within the UK to preserve their place in the
EU by separating from the UK, as well as the potential for other EU Member States to consider withdrawal. For example, the outcome of the UK EU Referendum was not supported by the majority of voters in Scotland, who voted in favour of remaining in
the EU. This has revived the political debate on a second referendum on Scottish independence. These developments, or the perception that any of them could occur, may have a material adverse effect on economic conditions and the stability of
financial markets, and could significantly reduce market liquidity and restrict the ability of key market participants to operate in certain financial markets (for more information, see the risk factor entitled We are vulnerable to disruptions
and volatility in the global financial markets).

Asset valuations, currency exchange rates and credit ratings may be particularly subject to increased market
volatility. The major credit rating agencies have downgraded and changed their outlook to negative on the UKs sovereign credit rating following the UK EU Referendum. In addition, S&P Global Ratings and Moodys Investors Service
affirmed the long-term credit ratings and changed the ratings outlooks of the operating companies of most major UK banks because of the medium term impact of political and market uncertainty (for more information, see the risk factor entitled
An adverse movement in our external credit rating would likely increase our cost of funding, require us to post additional collateral or take other actions under some of our derivative contracts and adversely affect our interest margins and
results of operations).

In addition, we are subject to substantial EU-derived regulation and oversight. There is now significant uncertainty as to the
respective legal and regulatory environments in which we and our subsidiaries will operate when the UK is no longer a member of the EU, causing potentially divergent national laws and regulations across Europe should EU laws be replaced, in whole or
in part, by UK laws on the same (or substantially similar) issues. For example, we are in the process of implementing a number of key restructuring and strategic initiatives, such as the ring-fencing of our retail banking activities, all of which
will be carried out throughout this period of significant uncertainty. This may impact the prospects for successful execution and impose additional pressure on management (for more information, see the risk factor entitled We are subject to
substantial regulation and governmental oversight which could adversely affect our business and operations). Operationally, we and other financial institutions may no longer be able to rely on the European passporting framework for financial
services and could be required to apply for authorisation in multiple EU jurisdictions, the costs, timing and viability of which is uncertain. This uncertainty, and any actions taken as a result of this uncertainty, as well as new or amended rules,
may have a significant impact on our operations, profitability and business. In addition, the lack of clarity of the impact of the UK EU Referendum on foreign nationals long-term residency permissions in the UK may make it challenging for us
to retain and recruit adequate staff, which may adversely impact our business.

The UK political developments described above, along with any further changes in
government structure and policies, may lead to further market volatility and changes to the fiscal, monetary and regulatory landscape in which we operate and could have a negative adverse effect on our financing availability and terms and, more
generally, on our business, financial condition and results of operation.

We are subject to substantial regulation and governmental oversight
which could adversely affect our business and operations

Supervision and new regulation

As a financial services group, we are subject to extensive financial services laws, regulations, administrative actions and policies in the UK, the EU and each other
location in which we operate, including in the US. As well as being subject to UK regulation, as part of the Banco Santander group, we are also impacted through regulation by the Banco de España (the Bank of Spain) and, at a corporate level,
by the European Central Bank (ECB). The laws, regulations and policies to which we are subject may be changed at any time. In addition, the interpretation and the application of those laws, regulations and policies by regulators are also subject to
change. Extensive legislation and implementing regulations affecting the financial services industry have recently been adopted in regions that directly or indirectly affect our business, including Spain, the US, the EU, Latin America and other
jurisdictions.





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The manner in which financial services laws, regulations and policies are applied to the operations of financial institutions is still evolving. Moreover, to the extent
these laws, regulations and policies are implemented inconsistently in the UK, we may face higher compliance costs. Any legislative or regulatory actions and any required changes to our business operations resulting from such laws, regulations and
policies as well as any deficiencies in our compliance with such laws, regulations and policies, could result in significant loss of revenue, limit our ability to pursue business opportunities in which we might otherwise consider engaging and limit
our ability to provide certain products and services. They may also affect the value of assets that we hold, requiring us to increase our prices and therefore reduce demand for our products, impose additional compliance and other costs on us or
otherwise adversely affect our businesses. Accordingly, there can be no assurance that future changes in laws, regulations and policies or in their interpretation or application will not adversely affect us.

During recent periods of market turmoil, there have been unprecedented levels of government and regulatory intervention and scrutiny, and changes to the regulations
governing financial institutions and the conduct of business. In addition, in light of the financial crisis, regulatory and governmental authorities are considering, or may consider, further enhanced or new legal or regulatory requirements intended
to prevent future crises or otherwise assure the stability of institutions under their supervision. This intensive approach to supervision is maintained by the Prudential Regulation Authority (PRA) and the Financial Conduct Authority (FCA).

Recent proposals and measures taken by governmental, tax and regulatory authorities and further future changes in supervision and regulation (in particular in the UK),
which are beyond our control, could materially affect our business, the value of assets and operations and result in significant increases in operational costs. Products and services offered by us could also be affected. Changes in UK legislation
and regulation to address the stability of the financial sector may also affect our competitive position, particularly if such changes are implemented before international consensus is reached on key issues affecting the industry. Although we work
closely with our regulators and continually monitor the situation, future changes in law, regulation, fiscal or other policies can be unpredictable and are beyond our control. No assurance can be given generally that laws or regulations will be
adopted, enforced or interpreted in a manner that will not have an adverse effect on our business.

Banking Reform

On 18 December 2013, the Financial Services (Banking Reform) Act (the Banking Reform Act) was enacted. The Banking Reform Act implements the recommendations of the
Independent Commission on Banking (ICB) and of the Parliamentary Commission on Banking Standards. Among other things, the Banking Reform Act establishes a ring-fencing framework under the Financial Services and Markets Act 2000 (FSMA) pursuant to
which UK banking groups that hold significant retail deposits are required to separate their retail banking activities from their wholesale banking activities by 1 January 2019, establishes a new Payment Systems Regulator (the PSR) and amends
the Banking Act 2009 (the Banking Act) to include a bail-in stabilisation power forming part of the special resolution regime (for more information, see the risk factor entitled Bail-in and write down powers under the Banking Act and the BRRD
may adversely affect our business and the value of securities we may issue).

On 7 July 2016, the PRA published a policy statement (PS20/16) entitled
The implementation of ring-fencing: prudential requirements, intragroup arrangements and use of financial market infrastructures containing final ring-fencing rules ahead of the implementation date for ring-fencing on 1 January
2019. The PRA expects firms to finalise their ring-fencing plans and highlight any changes as a result of the policy statement to the PRA. The PRA will keep the policy under review to assess whether changes may be required as a result of any
regulatory change following the UKs exit from the EU.

Finally, the Banking Reform Act introduced a new form of transfer scheme, the ring-fencing transfer
scheme, under Part VII of FSMA to enable UK banks to implement the ring-fencing requirements. This is a court process that requires (i) the PRA to approve the scheme (in consultation with the FCA); (ii) the appropriate regulatory authority
in respect of each transferee to provide a certificate of adequate financial resources in relation to that transferee; and (iii) an independent expert (approved by the PRA, after consultation with the FCA) to provide a scheme report stating
whether any adverse effect on persons affected by the scheme is likely to be greater than is reasonably necessary to achieve the ring-fencing purposes of the scheme. The PRA published its final statement of policy on its approach to ring-fencing
transfer schemes on 4 March 2016.

The Santander UK group is subject to the ring-fencing requirement under the Banking Reform Act and, as a consequence, the
Santander UK group will need to separate its core activities from its prohibited activities. The Santander UK group continues to work closely with regulators on developing its business and operating model to comply with the ring-fencing
requirements. In light of the changeable macro-environment, the board of the Company concluded that we could provide greater certainty for our customers with a wide ring-fence structure, rather than the narrow ring-fence
structure originally envisaged as this will also allow us to maintain longer term flexibility. Under this revised model Santander UK plc, the ring-fenced bank, will serve our retail, commercial and corporate customers. Abbey National Treasury
Services plc will no longer constitute the non-ring fenced bank and its activities will be revised as part of the new ring-fenced model. We intend to complete the implementation of our ring-fence plans well in advance of the legislative deadline of
1 January 2019. The ring-fencing model that the Santander UK group ultimately implements will depend on a number of factors including economic conditions in the UK and globally and will entail a legal and organisational restructuring of the
Santander UK groups businesses and operations, including transfers of customers and transactions through a ring-fencing transfer scheme. In light of the scale and complexity of this process, the operational and execution risks for the
Santander UK group may be material. This restructuring and migration of customers and transactions could have a material impact on how the Santander UK group conducts its business. The Santander UK group is unable to predict with certainty the
attitudes and reaction of its customers.

The restructuring of the Santander UK groups business pursuant to the developing ring-fencing regime will take a
substantial amount of time and cost to implement, the separation process and the structural changes which may be required could have a material adverse effect on its business, operating results, financial condition, profitability and prospects.

EU fiscal and banking union

The European banking union is expected to be
achieved through new harmonized banking rules (in a single rulebook) and a new institutional framework with stronger systems for both banking supervision and resolution that will be managed at a European level. Its two main pillars are the Single
Supervisory Mechanism (SSM) and the Single Resolution Mechanism (SRM).

The SSM (comprising both the ECB and the national competent authorities) is designed to
assist in making the banking sector more transparent, unified and safer. On 4 November 2014, the ECB fully assumed its new supervisory responsibilities within the SSM, in particular direct supervision of 127 significant banks (at
2 December 2016) in the eurozone, including Banco Santander SA.





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|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





Regulation (EU) No. 806/2014 of the European Parliament and the Council of the EU (the SRM
Regulation) became effective from 1 January 2015 and establishes uniform rules and a uniform procedure for the resolution of credit institutions and certain investment firms in the framework of the SRM and Single Resolution Fund (SRF). The new
Single Resolution Board (SRB), which is the central decision-making body of the SRM fully assumed its resolution powers on 1 January 2016. The SRB is responsible for managing the SRF.

Further, regulations adopted towards achieving a banking and/or fiscal union in the EU and decisions adopted by the ECB in its capacity as Banco Santander SAs main
supervisory authority may have a material impact on our business, financial condition and results of operations and may be impacted by the terms of the UKs exit from the EU (for more information, see the risk factor entitled Exposure to
UK political developments, including the outcome of the UK referendum on membership of the EU, could have a material adverse effect on us).

European
structural reform

On 29 January 2014, the European Commission (Commission) published proposals on structural measures to improve the resilience of EU
credit institutions which included potential separation of certain trading activities from retail banking activities and a ban on proprietary trading. The proposal currently contemplates that EU Member States that have already implemented
ring-fencing legislation may apply for a derogation from the separation of trading activities provisions included in the proposals if they can satisfy the Commission that such local legislation meets the objectives and requirements set out in the EU
proposal. However, the European Parliament and Council are also considering a version of the proposal without the derogation provision. Notwithstanding the possible derogation referred to above, the adoption of this proposal in its current, or in an
amended, form may require further changes to our structure and business although as a result of the UK EU Referendum, there is ongoing uncertainty regarding the continuing relevance of EU regulations and reforms in the UK (for more information, see
the risk factor entitled Exposure to UK political developments, including the outcome of the UK referendum on membership of the EU, could have a material adverse effect on us).

Other regulatory reforms adopted or proposed in the wake of the financial crisis

On 16 August 2012, the EU regulation on over-the-counter (OTC) derivatives, central counterparties and trade repositories, referred to as the European Market
Infrastructure Regulation (EMIR) came into force. EMIR introduced a number of requirements, including clearing obligations for certain classes of OTC derivatives, margin requirements for non-centrally cleared derivatives and various reporting and
disclosure obligations. Certain details remain to be clarified in the further binding technical standards to be adopted by the Commission, which creates some uncertainty as to the final impact on us, however, the implementation of EMIR has already
led and may yet lead to changes which may negatively impact our profit margins, require us to adjust our business practices or increase our costs (including compliance costs).

The revised and re-enacted Markets in Financial Instruments legislation (MiFID) replaces the existing MiFID framework and comprises the Directive 2014/65 of
the European Parliament and of the Council, of 15 May 2014 and amending Directive 2002/92/EC and Directive 2011/61/EU (MiFID2) and the Regulation 600/2014 of the European Parliament and of the Council of 15 May 2014 and amending
Regulation (EU) No 648/2012 (MiFIR). The substantive provisions of MiFID will be applicable on 3 January 2018 and will introduce an obligation to trade certain classes of OTC derivative contracts on trading venues. Certain details remain to be
clarified in further binding technical standards to be adopted by the Commission. Although the full impact of MiFID2 and MiFIR on us is not yet known, MiFID2 and MiFIR may lead to changes which negatively impact our profit margins, require it to
adjust its business practices or increase its costs (including compliance costs).

US regulation

In the US, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the Dodd-Frank Act) enacted in 2010, has been implemented in part and continues to be
implemented by various US federal regulatory agencies. The Dodd-Frank Act, among other things, imposes a new regulatory framework on swap transactions, including swaps of the sort that we enter into, requires regulators to adopt new rules governing
the retention of credit risk by securitisers or originators of securitisations and significantly expands the coverage and scope of regulations that limit affiliate transactions within a banking organisation. Over 2012-2015, the US Commodity Futures
Trading Commission (the CFTC) and the US Prudential Regulators adopted a host of new regulations for swaps markets, including swap dealer registration, business conduct, mandatory clearing, exchange trading and margin regulations. Most of these
regulations are either already effective or will come into effect in 2017. Abbey National Treasury Services plc, which became provisionally registered as a swap dealer with the CFTC on 4 November 2013, is currently subject to these regulations
for its US facing swaps activities. These rules have already increased and could continue to increase the costs associated with our swaps business. In addition, certain cross-border regulatory conflicts could adversely affect the profitability of
our swaps business by reducing the range of counterparties with which we can trade effectively.

In October 2014, US regulators adopted a joint final rule requiring
sponsors of asset-backed securitisation transactions, which would include the Company in relation to its residential mortgage-backed securities programmes, to retain 5% of the credit risk of the assets subject to the securitisation. The rule permits
sponsors to satisfy the risk retention requirement through the acquisition and retention of either 5% (measured by fair value) of the most subordinated interest in the securitisation, or 5% (measured by nominal value) of each tranche of interests
issued by the securitisation, or some combination of the two. The rule also permits certain exceptions and methods of compliance in respect of specific types of asset-backed securities transactions. The final rule took effect for residential
mortgage-backed securities transactions on 24 December 2015, and on 24 December 2016 for other securitisation transactions.

Within the Dodd-Frank Act, the
so-called Volcker Rule prohibits banking entities, including the Santander UK group, from engaging in certain forms of proprietary trading or from sponsoring or investing in certain covered funds, in each case subject to certain
exemptions, including exemptions permitting foreign banking entities to engage in trading and fund activities that take place solely outside of the US. The final rules contain exclusions and certain exemptions for market-making, hedging,
underwriting, trading in US government and agency obligations as well as certain foreign government obligations, trading solely outside the US, and also permit ownership interests in certain types of funds to be retained. On 10 December 2013,
the US bank regulators issued final regulations implementing the Volcker Rule, and the Federal Reserve also issued an order extending the conformance period for all banking entities until 21 July 2015. On 7 July 2016 the US Federal Reserve
announced an additional extension of the conformance period that would give banking entities until 21 July 2017 to conform investments in and relationships with covered funds and certain foreign funds that may be subject to the Volcker Rule and
that were in place prior to 31 December 2013, and additional extensions may be possible. Banking entities must bring their activities and investments into compliance with the requirements of the Volcker Rule by the end of the applicable
conformance period. We have assessed how the final rules implementing the Volcker Rule affect our businesses and have adopted the necessary measures to bring our activities into compliance with the rules.





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Each of these aspects of the Dodd-Frank Act, as well as the changes in the US banking regulations, and increased uncertainty surrounding future changes, may directly and
indirectly impact various aspects of our business. The full spectrum of risks that the Dodd-Frank Act, including the Volcker Rule, pose to us is not yet known, however, such risks could be material and we could be materially and adversely affected
by them.

Competition

In the UK and elsewhere, there is continuing
political, competitive and regulatory scrutiny of the banking industry. Political involvement in the regulatory process, in the behaviour and governance of the UK banking sector and in the major financial institutions in which the UK Government has
a direct financial interest is likely to continue. Under the Enterprise Regulatory Reform Act 2013 the Office of Fair Trading (OFT) and the Competition Commission were replaced by the Competition and Markets Authority (CMA) on 1 April 2014. The
CMA is now the UKs main competition authority responsible for ensuring that competition and markets work well for consumers. In addition, under the Banking Reform Act, as of 1 April 2015, the FCA has the power to enforce against breaches
of the Competition Act 1998 and to refer markets to the CMA for in-depth investigation in the areas of financial services in the UK. As of 1 April 2015, the PSR also has an objective and powers equivalent to those of the FCA to promote
competition in the payments industry.

Following a market study and review, the CMA undertook a market investigation into competition in the personal current account
and SME retail banking markets. The CMA published its final report on 9 August 2016, which identified features of the markets for the supply of personal current accounts, business current accounts and SME lending that, in combination, are
having an adverse effect on competition. The CMA has decided on a comprehensive package of remedies including, among other things, the introduction of requirements to prompt customers to review the services that they receive from their bank at
certain trigger points and to promote customer awareness of account switching. The remedial measures will be implemented by orders, undertakings to be given by Bacs, and further work by the FCA and HM Treasury. This will include further work on
overdraft charges by the FCA, which remains under political scrutiny.

In addition, the FCA and PSR have recently undertaken, and are currently undertaking, a number
of competition related studies and reviews across a number of our businesses. Intervention as a result of these studies and reviews, in addition to regulatory reforms, investigations and court cases affecting the UK financial services industry,
could have an adverse effect on our operating results, financial condition and prospects, or our relations with our customers and potential customers.

Financial
Crime

There are a number of EU and UK proposals and measures targeted at preventing financial crime (including anti-money laundering (AML) and countering the
financing of terrorism (CTF) provisions) which are expected to come into effect in 2017 and 2018.

As part of the EUs revision of its AML / CTF rules,
Directive (EU) No 2015 / 849 (the Fourth EU Money Laundering Directive) and Regulation (EU) No 847 / 2015 (the EU Wire Transfer Regulation) will come into effect on 26 June 2017. The Fourth EU Money Laundering Directive replaces existing
Directive (EC) No 60 / 2005 and significantly expands the existing AML / CTF regime applicable to financial institutions by, among other things:

| | - | Increasing the customer due diligence checks required for particular transactions
| | - | ---------------------------------------------------------------------------------

| | - | Introducing a requirement to take appropriate steps to identify and assess the risks of money laundering and terrorist financing and to have in place policies, controls and procedures to mitigate and manage those risks
effectively
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Having EU Member States hold beneficial ownership details on a central register for entities incorporated within their territory
| | - | --------------------------------------------------------------------------------------------------------------------------------

| | - | Applying the UKs AML / CTF requirements to the branches and majority-owned subsidiaries of financial institutions that are located in non-EEA countries with less strict regimes.
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The UK Government has consulted on its implementation of the Fourth EU Money Laundering Directive into national law and the amendments needed to the Persons with
Significant Control regime and draft regulations are expected to be published in early 2017 for further consultation before the final rules are issued. However, the EU legislature is currently considering making further amendments to the new
directive.

The EU Wire Transfer Regulation replaces the existing Regulation (EC) No 1781 / 2006. This regulation will apply to all transfers of funds in any
currency which are sent or received by a payment service provider (PSP) or an intermediary PSP established in the EU, subject to certain exceptions for low-risk and low-value payments. The payers PSP is required to ensure that any transfer of
funds is accompanied by the identification information prescribed in the regulation and must verify the accuracy of this information from a reliable and independent source. Obligations are also imposed on the payees PSP to implement effective
procedures to detect whether the information about the payer or payee in the messaging or payment and settlement system is incomplete and to take a risk-based approach to determining whether to execute, reject or suspend a transfer of funds with
missing information.

The current draft of the UK Policing and Crime Bill 2015-16 to 2016-17 contains several measures to strengthen the enforcement of financial
sanctions including enhanced criminal penalties and the power to impose monetary penalties for breaches of financial sanctions, deferred prosecution agreements and serious crime prevention orders for such breaches and the power to temporarily
implement UN financial sanctions in the absence of EU implementing measures. The bill is expected to come into effect in 2017.

The UK Immigration Act 2016 requires
banks to conduct immigration checks on their current account holders and report any persons unlawfully present in the UK to the Home Office. The Home Office may require the bank to close the accounts of such individuals as soon as reasonably
practicable. The regulations implementing these changes are expected to be published in 2017.

Finally, HM Revenue & Customs has published draft legislation
introducing a new offence which will be committed by a corporation which fails to prevent the criminal facilitation of tax evasion by its associated persons (which includes its employees, agents and other persons who perform services for or on
behalf of it) regardless of whether the tax is owed in the UK or another country. There is a defence where the corporation has put in place reasonable prevention procedures to prevent its associated persons from facilitating tax evasion or where it
is unreasonable to expect such procedures. If an offence is committed, unlimited financial penalties or ancillary orders could be imposed. This new offence forms part of the UK Criminal Finances Bill 2016 / 2017 which is currently being considered
by the UK Parliament. This bill amends the UK Proceeds of Crime Act 2002 and will, if passed, contain a further range of provisions targeted at improving the UK Governments ability to tackle money laundering and corruption, recover the
proceeds of crime and counter terrorist financing and will enable the sharing of information between the private sector and enforcement agencies.





280Santander UK plc



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|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





The implementation of the foregoing measures (whether in their current form or as amended) will
materially increase our regulatory and compliance burden, particularly if the time frame for implementation is short. The proposed changes will require substantial amendments to our AML / CTF procedures and policies. The changes could adversely
impact our business by increasing our operational and compliance costs and reducing the value of our assets and operations. Where the changes have extra-territorial effect, there may be difficulties in ensuring the compliance of entities over which
we do not have full control or where the UK rules do not align easily with the local requirements. There is always a risk that the measures will not be implemented correctly or that individuals within the business will not be fully compliant with
the new procedures. If there are breaches of these measures, we could face significant administrative, regulatory and criminal sanctions as well as reputational damage which may have a material adverse effect on our operations, financial condition
and prospects.

EU General Data Protection Regulation

The EU General Data
Protection Regulation (the GDPR) will have direct effect in all EU Member States from 25 May 2018 and will replace current EU data privacy laws. Although a number of basic existing principles will remain the same, the GDPR introduces new
obligations on data controllers and rights for data subjects, including, among others:

| | - | Accountability and transparency requirements, which will require data controllers to demonstrate and record compliance with the GDPR and to provide more detailed information to data subjects regarding processing
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Enhanced data consent requirements, which includes explicit consent in relation to the processing of sensitive data
| | - | ---------------------------------------------------------------------------------------------------------------------

| | - | Obligations to consider data privacy as any new products or services are developed and limit the amount of information collected, processed, stored and its accessibility
| | - | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Constraints on using data to profile data subjects
| | - | --------------------------------------------------

| | - | Providing data subjects with personal data in a useable format on request and erasing personal data in certain circumstances
| | - | ----------------------------------------------------------------------------------------------------------------------------

| | - | Reporting of breaches without undue delay (72 hours where feasible)
| | - | -------------------------------------------------------------------

The GDPR also introduces new fines and penalties for
a breach of requirements, including fines for serious breaches of up to the higher of 4% of annual worldwide turnover or 20m and fines of up to the higher of 2% of annual worldwide turnover or 10m (whichever is highest) for other specified infringements. The GDPR identifies a list of points to consider when imposing fines (including the nature, gravity and duration of the infringement).

The implementation of the GDPR will require substantial amendments to our procedures and policies. The changes could adversely impact our business by increasing our
operational and compliance costs. Further, there is a risk that the measures will not be implemented correctly or that individuals within the business will not be fully compliant with the new procedures. If there are breaches of these measures, we
could face significant administrative and monetary sanctions as well as reputational damage which may have a material adverse effect on our operations, financial condition and prospects.

Further reforms to the mortgage lending market could require significant implementation costs or changes to our business strategy

The FCA Mortgage Market Review (MMR), which came into force on 26 April 2014, required us to implement a number of material changes to our mortgages sales process,
including in respect of the terms of provision of advice in nearly all scenarios and significantly enhanced affordability assessment and evidencing. The new rules also permitted interest-only loans. The FCA continues to assess firms
implementation of the rules introduced as a result of the MMR and commenced a review of responsible lending practices in April 2015. The FCA published the results of its responsible lending review in May 2016. In December 2016, the FCA published
terms of reference for a market study into competition in the mortgages sector, which will focus on consumers ability to make effective decisions and whether commercial arrangements between lenders, brokers and other players lead to conflicts
of interest or misaligned incentives to the detriment of consumers. The FCA aims to publish its interim report setting out its preliminary conclusions and any proposed solutions to address any concerns identified in summer 2017, with the final
report due in early 2018. There can be no assurance that we will not be required to make any future changes to our mortgage lending business, whether as a result of the MMR or other mortgage lending reforms, and that such changes would not
materially and adversely affect us.

We are exposed to risk of loss from legal and regulatory proceedings

We face various issues that may give rise to risk of loss from legal and regulatory proceedings. These issues could include inappropriately dealing with potential
conflicts of interest or failing to comply with legal and regulatory requirements and could result in claims against us or subject us to regulatory enforcement actions, fines and/or penalties. The current regulatory environment, with its increased
supervisory focus and associated enforcement activity, combined with uncertainty about the evolution of the regulatory regime, may lead to material operational and compliance costs. These include the risk that:

| | - | The Bank of England (BoE), the PRA and the FCA, HM Treasury, HM Revenue & Customs (HMRC), the CMA, the Commission, the Information Commissioners Office, the Financial Ombudsman Service (FOS), the PSR or
the courts, may determine that certain aspects of our business have not been or are not being conducted in accordance with applicable laws or regulations, or, in the case of the FOS, with what is fair and reasonable in the FOSs opinion
| | - | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | Given the new concurrent competition enforcement powers for the FCA and PSR, there is an increased focus on competition law in financial services which may increase the likelihood of competition law inquiries or
investigations
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | The alleged misselling of financial products, such as Payment Protection Insurance (PPI), including as a result of having sales practices and/or rewards structures that are deemed to have been inappropriate, results in
enforcement action (including fines) or requires us to amend sales processes, withdraw products or provide restitution to affected customers, all of which may require additional provisions to be recorded in our financial statements and could
adversely impact future revenues from affected products
| | - | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | We hold bank accounts for entities that might be or are subject to scrutiny from various regulators, including the UKs Serious Fraud Office and regulators in the US and elsewhere. We are not currently subject to
any investigation as a result of any such scrutiny, but cannot exclude the possibility of our conduct being reviewed as part of any such investigation
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | We may be liable for damages to third parties harmed by the conduct of our business. For competition law, there are efforts by governments across Europe to promote private enforcement as a means of obtaining redress for
harm suffered as a result of competition law breaches. Consequently, since 1 October 2015 under the Consumer Rights Act class actions may be used to allow the claims of a whole class of claimants into a single action in both follow-on and
standalone competition cases.
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We are from time to time subject to certain claims and party to certain legal proceedings brought by private individuals or regulators in the normal course of our
business, including in connection with our lending activities, relationships with our employees and other commercial or tax matters. These can be brought against us under UK regulatory processes or in the UK courts, or under regulatory processes in
other jurisdictions, such as the EU and the US, where some Santander UK group entities operate. In view of the inherent difficulty of predicting the outcome of legal matters and regulatory actions, particularly where the claimants seek very large or
indeterminate damages, or where the cases present novel legal theories, involve a large number of parties or are in the early stages of discovery, we cannot state with confidence what the eventual outcome of these pending matters will be or what the
eventual loss, fines and/or penalties related to each pending matter may be and these pending matters are not disclosed by name because they are under assessment. We believe that we have made adequate provisions related to these various claims and
legal proceedings where we are reasonably able to estimate them. These provisions are reviewed periodically. However, in light of the uncertainties involved in such claims and proceedings, there can be no assurance that the ultimate resolution of
these matters will not exceed the provisions currently accrued by us. As a result, the outcome of a particular matter may be material to our operating results for a particular period, depending upon, among other factors, the size of the loss or
liability imposed and our level of income for that period.

The FCA carries out regular and frequent firm-specific and thematic reviews of the conduct of business by
financial institutions including banks. An adverse finding by a regulator could result in the need for extensive changes in systems and controls, business policies, and practices coupled with suspension of sales, withdrawal of services, customer
redress, fines and reputational damage.

Failure to manage the foregoing risks adequately could have a material adverse effect on our reputation, operating results,
financial condition and prospects.

Potential intervention by the FCA, the PRA, the CMA or an overseas regulator may occur, particularly in
response to customer complaints

The PRA and the FCA continue to have an outcome-focused regulatory approach. This involves proactive intervention,
investigation and enforcement, and punitive penalties for infringement. As a result, we and other PRA-authorised or FCA-authorised firms continue to face increased regulatory scrutiny (resulting in increasing costs including supervision fees), and
in the event of a breach of relevant law or regulation, we are likely to face stringent penalties.

The developing legal and regulatory regime in which we operate
requires us to be compliant across all aspects of our business, including the training, authorisation and supervision of personnel, systems, processes and documentation. If we fail to be compliant with relevant law or regulation, there is a risk of
an adverse impact on our business from more proactive regulatory intervention (including by any overseas regulator which establishes jurisdiction), investigation and enforcement activity leading to sanctions, fines or other action imposed by or
agreed with the regulatory authorities, as well as increased costs associated with responding to regulatory inquiries and defending regulatory actions. Customers of financial services institutions, including our customers, may seek redress if they
consider that they have suffered loss for example as a result of the misselling of a particular product, or through incorrect application of the terms and conditions of a particular product or in connection with a competition law infringement.

In particular, the FCA has operational objectives to protect consumers and to promote competition, and it is taking an interventionist approach in its increasing
scrutiny of product terms and conditions and monitoring compliance with competition law. FSMA (as amended by the FS Act) gives the FCA the power to make temporary product intervention rules either to improve a firms systems and controls in
relation to product design, product management and implementation, or to address problems identified with products which may potentially cause significant detriment to consumers because of certain product features or firms flawed governance
and distribution strategies. Such rules may prevent firms from entering into product agreements with consumers until such problems have been rectified. Since April 2015 the FCA (and the PSR) also has concurrent competition law enforcement powers.
This is in addition to the CMA, the UKs main competition authority, and the Commission which continue to have jurisdiction, respectively, to enforce competition law infringements in the UK or which have an effect on trade between EU Member
States. Following a report by the National Audit Office, the CMA has stated it will seek to shift its focus toward enforcement of competition law breaches. As a result, the UK financial services sector now operates in an environment of heightened
competition law scrutiny. Under the Financial Services Act 2010, the FCA also has the power to impose its own customer redress scheme on authorised firms, including us, if it considers that consumers have suffered loss or damage as a consequence of
a regulatory failing, including misselling.

In recent years there has been FCA focus on the misselling of PPI. In November 2015, the FCA issued a consultation paper
(CP15/39) outlining its proposed approach to PPI in light of the 2014 decision of the Supreme Court in Plevin v Paragon Personal Finance Ltd (Plevin) and its proposal to set a two year deadline for PPI claims. In Plevin, the Supreme Court ruled that
a failure to disclose a large commission payment on a single premium PPI policy sold in connection with a secured personal loan made the relationship between the lender and the borrower unfair under section 140A of the Consumer Credit Act 1974. We
applied our interpretation of the proposed rules and guidance in CP15/39 to our assumptions, and made a £450m provision charge in December 2015, notwithstanding the ongoing nature of the consultation. New legislation was introduced in 2015
which has the effect of restricting the corporation tax deductibility for a large proportion of this cost (for more information see the risk factor entitled Changes in taxes and other assessments may adversely affect us). In August 2016,
the FCA issued feedback on CP15/39 and commenced a further consultation on amendments to the proposed rules and guidance set out in CP15/39, addressing (among other things) the inclusion of profit share in the FCAs proposed approach to the
assessment of fairness and redress and the extension of the deadline for making PPI-related complaints to the end of June 2019. On 9 December 2016, the FCA announced that it was carefully considering the issues raised by the consultation and
would make a further announcement in the first quarter of 2017. It is not clear what impact the delay in the FCAs response will have on the overall timetable for implementation of the new rules and guidance and the two year deadline. In 2016,
we made additional provision charges of £30m for a specific portfolio under a past business review and £114m for future PPI related claims costs and Plevin profit share arising from our interpretation of the August 2016 consultation
feedback. We continue to consider the impact of proposed amendments on our PPI complaint liabilities, although it is not possible to determine at this time the nature or extent of that impact.

The ultimate financial impact on us of the claims arising from PPI complaints is still uncertain and will depend on a number of factors, including the impact of the
Supreme Courts decision in Plevin, the nature and content of the FCAs final rules and/or guidance arising from CP15/39, changes to FOS approach to handling customer complaints (if any), the rate at which new complaints arise, the
length of any complaints, the content and quality of the complaints (including the availability of supporting evidence) and the average uphold rates and redress costs. We can make no assurance that expenses associated with PPI complaints will not
exceed the provisions made relating to these claims. More generally, we can make no assurance that estimates for potential liabilities, based on the key assumptions used, are correct, and the reserves taken as a result may prove inadequate. If
additional expenses that exceed provisions for PPI liabilities or other provisions were to be incurred, these expenses could have a material adverse effect on our operating results, financial condition and prospects.





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For further information about the provisions for PPI complaint liabilities and other conduct
remediation, see Note 33 to the Consolidated Financial Statements. The above may be relevant to any future industry-wide misselling or other infringement that could affect our businesses. Any such issues may lead from time to time to:
(i) significant costs or liabilities; and (ii) changes in the practices of such businesses which benefit customers at a cost to shareholders. Decisions taken by the FOS (or any equivalent overseas regulator that has jurisdiction) could, if
applied to a wider class or grouping of customers, have a material adverse effect on our operating results, financial condition and prospects.

The Financial
Services and Markets Act 2000 (Designated Consumer Bodies) Order 2013 (the Designated Consumer Bodies Order) was made on 16 December 2013 and came into force on 1 January 2014. The Designated Consumer Bodies Order designates the National
Association of Citizens Advice Bureaux, the Consumers Association, the General Consumer Council for Northern Ireland and the National Federation of Self Employed and Small Businesses as consumer bodies that may submit a
super-complaint to the FCA. A super-complaint is a complaint made by any of these designated consumer bodies to the FCA on behalf of consumers of financial services where it considers that a feature, or a combination of
features, of the market for financial services in the UK is seriously damaging the interests of these customers. Complaints about damage to the interests of individual consumers will continue to be dealt with by the FOS. If a
super-complaint were to be made against a Santander UK group entity by a designated consumer body under the Designated Consumer Bodies Order, any response published or action taken by the FCA could have a material adverse effect on our
operating results, financial condition and prospects.

Given the (i) requirement for compliance with an increasing volume of relevant law and regulation;
(ii) more proactive regulatory intervention and enforcement and more punitive sanctions and penalties for infringement; (iii) inherent unpredictability of litigation; and (iv) evolution of the jurisdiction of FOS and related impacts,
it is possible that related costs or liabilities could have a material adverse effect on our operating results, financial condition and prospects.

The Banking Act may adversely affect our business

The special resolution regime set out in the Banking Act provides HM Treasury, the BoE,
the PRA and the FCA (and their successor bodies) with a variety of powers for dealing with UK deposit taking institutions (and, in certain circumstances, their holding companies) that are failing or likely to fail, including: (i) to take a bank
or bank holding company into temporary public ownership; (ii) to transfer all or part of the business of a bank to a private sector purchaser; or (iii) to transfer all or part of the business of a bank to a bridge bank. The
special resolution regime also comprises a separate insolvency procedure and administration procedure each of which is of specific application to banks. These insolvency and administration measures may be invoked prior to the point at which an
application for insolvency proceedings with respect to a relevant institution could be made. In addition, pursuant to amendments made to the Banking Act, which came into force on 1 August 2014, provision has been made for various tools to be
used in respect of a wider range of UK entities, including investment firms and certain banking group companies, provided that certain conditions are met.

If an
instrument or order were made under the Banking Act in respect of the Company or another Santander UK group entity, such instrument or order (as the case may be) may, among other things: (i) result in a compulsory transfer of shares or other
securities or property of the Company or such other entity; (ii) impact on the rights of the holders of shares or other securities in the Company or such other entity or result in the nullification or modification of the terms and conditions of
such shares or securities; or (iii) result in the de-listing of the shares and/or other securities of the Company or such other entity in the Santander UK group. In addition, such an order may affect matters in respect of the Company or such
other entity and/or other aspects of the shares or other securities of the Company or such other entity in the Santander UK group, which may negatively affect the ability of the Company or such other entity to meet its obligations in respect of such
shares or securities.

Further, amendments to the Insolvency Act 1986 and secondary legislation have introduced changes to the treatment and ranking of certain debts
with the result that certain eligible deposits will rank in priority to the claims of ordinary (i.e. non-preferred) unsecured creditors in the event of an insolvency. This may negatively affect the ability of the Company or another Santander UK
group entity to meet its obligations in respect of its unsecured creditors in an insolvency scenario.

Bail-in and write down powers under the
Banking Act and the BRRD may adversely affect our business and the value of securities we may issue

The Banking Reform Act as of 31 December 2014
amended the Banking Act to introduce a UK bail-in power. On 6 May 2014, the Council adopted the EU Bank Recovery and Resolution Directive (BRRD), which contains a similar bail-in power and requires EU Member States to provide
resolution authorities with the power to write down the claims of unsecured creditors of a failing institution and to convert unsecured claims to equity (subject to certain parameters). The UK Government decided to implement the BRRD bail-in power
from 1 January 2015. The new PRA and FCA rules and supervisory statements took effect from 19 January 2015, with the exception of the rules that require a contractual clause recognising bail-in powers in foreign law liabilities. These
rules were phased in, with the first phase, which applies to debt instruments, having commenced on 19 February 2015. The second phase, which applies to all other relevant liabilities commenced on 1 January 2016.

The UK bail-in power is an additional power available to the UK resolution authorities under the special resolution regime provided for in the Banking Act to enable them
to recapitalise a failed institution by allocating losses to such institutions shareholders and unsecured creditors, subject to the rights of such shareholders and unsecured creditors to be compensated under a bail-in compensation order, which
is based on the principle that such creditors should receive no less favourable treatment than they would have received had the bank entered into insolvency immediately before the coming into effect of the bail-in power. The bail-in power includes
the power to cancel or write down (in whole or in part) certain liabilities or to modify the terms of certain contracts for the purposes of reducing or deferring the liabilities of a relevant institution under resolution and the power to convert
certain liabilities into shares (or other instruments of ownership) of the relevant institution. The conditions for use of the UK bail-in power are generally that (i) the regulator determines the relevant institution is failing or likely to
fail; (ii) it is not reasonably likely that any other action can be taken to avoid such relevant institutions failure; and (iii) the relevant UK resolution authority determines that it is in the public interest to exercise the
bail-in power. Certain liabilities are excluded from the scope of the bail-in powers, including liabilities to the extent that they are secured.





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According to the Banking Act, as well as similar principles in the BRRD, the relevant UK resolution authority should have regard to the insolvency treatment principles
when exercising the UK bail-in power. The insolvency treatment principles are that (i) the exercise of the UK bail-in power should be consistent with treating all liabilities of the bank in accordance with the priority that they would enjoy on
a liquidation; and (ii) any creditors who would have equal priority on a liquidation should bear losses on an equal footing with each other. HM Treasury may, by order, specify further matters or principles to which the relevant UK resolution
authority must have regard when exercising the UK bail-in power. These principles may be specified in addition to, or instead of the insolvency treatment principles. If the relevant UK resolution authority departs from the insolvency treatment
principles when exercising the UK bail-in power, it must report to the Chancellor of the Exchequer stating the reasons for its departure.

The bail-in power under
the Banking Act and the BRRD may potentially be exercised in respect of any unsecured debt securities issued by a financial institution under resolution or by a relevant member of the Santander UK group, regardless of when they were issued.
Accordingly, the bail-in power under the Banking Act and the BRRD could be exercised in respect of our debt securities. We expect that public financial support would only be used as a last resort after having assessed and exploited, to the maximum
extent practicable, the resolution tools including the bail-in tool, and the occurrence of circumstances in which bail-in powers would need to be exercised in respect of us would likely have a negative impact on our business.

The BRRD also contains a mandatory write down power which requires EU Member States to grant powers to resolution authorities to recapitalise institutions and/or their
EEA parent holding companies that are in severe financial difficulty or at the point of non-viability by permanently writing down Tier 1 and Tier 2 capital instruments issued by such institutions and/or their EEA parent holding companies, or
converting those capital instruments into shares (or other instruments of ownership). The mandatory write down provision has been implemented in the UK through the Banking Act. Before taking any form of resolution action or applying any resolution
power set out in the BRRD, the UK resolution authorities have the power (and are obliged when specified conditions are determined to have been met) to write down, or convert Tier 1 and Tier 2 capital instruments issued by the relevant institution
into CET1 capital instruments before, or simultaneously with, the entry into resolution of the relevant entity. These measures could be applied to certain of our debt securities. The occurrence of circumstances in which write down powers would need
to be exercised in respect of us would be likely to have a negative impact on our business.

In contrast to the creditor protections afforded in the event of the
bail-in powers being exercised, holders of capital instruments will not be entitled to the no creditor worse off protections under the Banking Act in the event that their capital instruments are written down or converted to equity under
the mandatory write-down tool (unless the mandatory write-down tool were to be used alongside a bail-in). Furthermore, in circumstances where capital instruments are converted into equity securities by application of the mandatory write-down tool,
those equity securities may be subjected to the bail-in powers in resolution, resulting in their cancellation, significant dilution or transfer away from the investors therein. Lastly, the BRRD provides for resolution authorities to have the power
to require institutions and groups to make structural changes to ensure legal and operational separation of critical functions from other functions where necessary, or to require institutions to limit or cease existing or proposed
activities in certain circumstances. As a result of changes to the PRA Rulebook made to implement the BRRD, the Company is now required to identify such critical functions as part of its resolution and recovery planning. If used in
respect of us, these ex ante powers could have a negative impact on our business.

We are subject to regulatory capital and leverage
requirements that could limit our operations, and changes to these requirements may further limit and adversely affect our operating results, financial condition and prospects

We are subject to capital adequacy requirements applicable to banks and banking groups under directly applicable EU legislation and as adopted by the PRA. We are
required to maintain a minimum ratio of Common Equity Tier 1 (CET1) capital to risk-weighted assets, Tier 1 capital to risk-weighted assets, total capital to risk-weighted assets and Tier 1 capital to total adjusted assets for leverage monitoring
purposes. Any failure by us to maintain such ratios above prescribed regulatory minimum levels may result in administrative actions or sanctions. These could potentially include requirements on us to cease all or certain lines of new business, to
raise new capital resources or, in certain circumstances, a requirement for our existing capital instruments (potentially including our debt securities) to be subjected to bail-in or write down (for more information, see the risk factor entitled
Bail-in and write down powers under the Banking Act and the BRRD may adversely affect our business and the value of securities we may issue).

The
Capital Requirements Directive IV (CRD IV Directive) and the Capital Requirements Regulation (CRR Regulation and together with the CRD IV Directive, CRD IV) implemented changes proposed by the Basel Committee on Banking Supervision (the Basel
Committee) to the capital adequacy framework, known as Basel III in the EU. The CRR Regulation is directly applicable in each EU Member State and does not therefore require national implementing measures, whilst the CRD IV Directive has
been implemented by EU Member States through national legislative processes. CRD IV came into effect on 1 January 2014, with particular requirements expected to be fully effective by 2019. On 19 December 2013, the PRA published the initial
version of its rules and supervisory statements associated with the implementation of CRD IV, which cover prudential rules for banks, building societies and investment firms. Binding technical standards adopted by the Commission have also impacted
CRD IV requirements.

Under the Pillar 2 framework, the PRA requires the capital resources of UK banks to be maintained at levels which exceed the base
capital requirements prescribed by CRD IV and to cover relevant risks in their business. In addition, a series of capital buffers have been established under CRD IV and PRA rules to ensure a bank can withstand a period of stress. These buffers,
which must be met by CET1 capital, include the countercyclical capital buffer, sectoral capital requirements, a PRA buffer and the capital conservation buffer. The total size of the capital buffers will be informed by the results of the annual
concurrent UK stress testing exercises. The BoEs approach to stress testing the UK banking system was outlined in October 2015. The BoE is aiming to develop an approach that is explicitly countercyclical, with the severity of the stress test
and the associated regulatory capital buffers varying systematically with the state of the financial cycle. Furthermore, the framework is aiming to support a continued improvement in UK banks risk management and capital planning capabilities,
and the BoE expects participating UK banks to demonstrate sustained improvements in their capabilities over time. The PRA can take action if a bank fails to meet the required capital ratio hurdle rates in the stress testing exercise, and the banks
which fail to do so will be required to take action to strengthen their capital position over an appropriate timeframe. If a bank does not meet expectations in its risk management and capital planning capabilities in the stress testing exercise,
this may inform the setting of its capital buffers. Though the results of the PRAs 2016 stress test did not impact on the level of capital that we are required to hold, the PRA could, in the future, as a result of stress testing exercises
(both in the UK and EU wide) and as part of the exercise of UK macro-prudential capital regulation tools, or through supervisory actions (beyond the changes described below), require UK banks and banking groups, including us, to increase our/their
capital resources further.





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|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





The Financial Services Act 2012 (the FS Act) empowers the Financial Policy Committee of the BoE
(FPC), which is a sub-committee of the Court of Directors of the BoE, to give directions to the PRA and the FCA so as to ensure implementation of macroprudential measures intended to manage systemic risk. For the UK, the FPC sets the countercyclical
capital buffer rate on a quarterly basis. At its most recent meeting in September 2016, the FPC announced that the countercyclical capital buffer rate would remain at 0% until at least June 2017.

The FS Act also provides the FPC with certain other macro-prudential tools for the management of systemic risk. In July 2015, the FPC made certain directions to the PRA
in relation to the leverage ratio. Since January 2016, all major UK banks and banking groups (including us) have been required to hold enough Tier 1 capital (75% of which must be CET1 capital) to satisfy a minimum leverage requirement of 3% and
enough CET1 capital to satisfy a countercyclical leverage ratio buffer of 35% of each banks institution-specific countercyclical capital buffer rate. The FPC also directed the PRA to require UK globally systemically important banks (G-SIBs)
and domestically systemically important banks, building societies and PRA-regulated investment firms (including us) to hold enough CET1 capital to meet a supplementary leverage ratio buffer of 35% of the institution-specific G-SIB buffer rate or
Systemic Risk Buffer (SRB) for domestically systemically important banks. The supplementary leverage ratio buffer was implemented on 1 January 2016, in line with the G-SIB buffer rate imposed by the Financial Stability Board (FSB), with the SRB
to be applicable from 1 January 2019. The FPC finalised and published its SRB framework on 25 May 2016. Systemic importance is measured using the total assets of ring-fenced bank sub-groups in scope of the SRB, with higher SRB rates
applicable as total assets increase. In December 2016, the PRA published its statement of policy on the SRB relevant to ring-fenced bodies. The PRA will review its statement of policy in 2018, following the review of the FPCs SRB framework.
The FPC can also direct the PRA to adjust capital requirements in relation to particular sectors through the imposition of sectoral capital requirements. Action taken in the future by the FPC in exercise of any of its powers could result in the
regulatory capital requirements applied to us being increased.

Regulators in the UK and worldwide have also proposed that additional loss absorbency requirements
should be applied to systemically important institutions to ensure that there is sufficient loss absorbing and recapitalisation capacity available in resolution. The BRRD requires that EU Member States ensure that EU banks meet a Minimum Requirement
for Eligible Liabilities (MREL). The BRRD was transposed into UK law in January 2015, with the provisions on MREL taking effect from 1 January 2016. On 11 December 2015, the BoE published a consultation paper on its proposed statement of
policy on its approach to setting MREL. On 9 November 2015, the FSB published its final Total Loss-Absorbing Capital (TLAC) standards for G-SIBs. The BoE has indicated that it will set MREL on a case-by-case basis, and that it intends to set
MREL for G-SIBs as necessary to implement the TLAC standard. The BoE has also indicated that it intends to set consolidated MREL no higher than institutions current regulatory minimum capital requirements and consequently there should be no
immediate change in regulatory requirements for loss absorbency capacity. For most institutions, the BoE proposes to set a final MREL conformance date of 1 January 2020, although it expects UK G-SIBs to meet the interim TLAC minimum requirement
by 1 January 2019. In November 2016, the BoE published its responses to the consultation and the PRA published a statement of policy in relation to MREL. A key change to the BoEs policy on MREL is that firms will now be required to meet
the interim MREL requirements by 1 January 2020 and to meet full MREL requirements by 1 January 2022. The BoE expects to conduct a review of its general approach to calibrating MREL and to set the final transition date by the end of 2020.

In addition, since 31 December 2014, the PRA has had the power under the FSMA to make rules requiring a parent undertaking of a bank to make arrangements to
facilitate the exercise of resolution powers, including a power to require a group to issue debt instruments. Such powers could have an impact on the liquidity of our debt instruments and could materially increase our cost of funding. Since
1 January 2014, we have also been subject to certain recovery and resolution planning requirements (popularly known as living wills) for banks and other financial institutions as set out in the PRA Rulebook. These requirements were
updated in January 2015 to implement the recovery and resolution framework under the BRRD. The updated requirements impose more regular and detailed reporting obligations, including the requirement to submit recovery plans and resolution packs to
the PRA and to keep them up to date.

In addition to the above, regulators in the UK and worldwide have produced a range of proposals for future legislative and
regulatory changes which could force us to comply with certain operational restrictions or take steps to raise further capital, or could increase our expenses, or otherwise adversely affect our operating results, financial condition and prospects.
These changes, which could affect the Santander UK group as a whole, include the EU implementation of the Basel Committees new market risk framework, which reflects rules made as a result of the Basel Committees fundamental review of the
trading book. Other proposed changes to the capital framework include:

| | - | Revisions to the standardised approach to credit risk (Standardised Approach) to address certain weaknesses identified by the Basel Committee
| | - | ---------------------------------------------------------------------------------------------------------------------------------------------

| | - | Additional constraints on the use of internal model approaches for credit risk
| | - | ------------------------------------------------------------------------------

| | - | The development of the Standardised Approach-based floor on modelled credit risk capital requirements.
| | - | ------------------------------------------------------------------------------------------------------

The Basel
Committee has also announced proposals to revise the measurement approach for operational risk and plans to finalise the calibration and design of the leverage ratio in 2017. The Basel Committees consultation paper on proposed revisions to the
leverage ratio framework closed on 6 July 2016.

The foregoing measures could have a material adverse effect on our operating results, and consequently, on our
business, financial condition and prospects. There is a risk that changes to the UKs capital adequacy regime (including any increase to minimum leverage ratios) may result in increased minimum capital requirements, which could reduce available
capital for business purposes and thereby adversely affect our cost of funding, profitability and ability to pay dividends, continue organic growth (including increased lending), or pursue acquisitions or other strategic opportunities (alternatively
we could restructure our balance sheet to reduce the capital charges incurred pursuant to the PRAs rules in relation to the assets held, or raise additional capital but at increased cost and subject to prevailing market conditions). In
addition, changes to the eligibility criteria for Tier 1 and Tier 2 capital may affect our ability to raise Tier 1 and Tier 2 capital and impact the recognition of existing Tier 1 and Tier 2 capital resources in the calculation of our capital
position. Furthermore increased capital requirements may negatively affect our return on equity and other financial performance indicators.

Our business could be
affected if our capital is not managed effectively or if these measures limit our ability to manage our balance sheet and capital resources effectively or to access funding on commercially acceptable terms. Effective management of our capital
position is important to our ability to operate our business, to continue to grow organically and to pursue our business strategy. For more on our capital position and capital management, see Risk review - Capital risk on pages 106 to
109.





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Liquidity and funding risks are inherent in our business and could have a material adverse effect on us

Liquidity risk is the risk that we, although solvent, either do not have available sufficient financial resources to meet our obligations as they fall due or can secure
them only at excessive cost. This risk is inherent in any retail and commercial banking business and can be heightened by a number of enterprise-specific factors, including over-reliance on a particular source of funding, changes in credit ratings
or market-wide phenomena such as market dislocation. While we implement liquidity management processes to seek to mitigate and control these risks, unforeseen systemic market factors in particular make it difficult to eliminate completely these
risks. Continued constraints in the supply of liquidity, including inter-bank lending, which arose between 2009 and 2013, materially and adversely affected the cost of funding our business. There can be no assurance that such constraints will not
reoccur. Extreme liquidity constraints may affect our operations and our ability to fulfil regulatory liquidity requirements, as well as limit growth possibilities. Disruption and volatility in the global financial markets could have a material
adverse effect on our ability to access capital and liquidity on financial terms acceptable to us.

Changes in our credit spreads can significantly increase the cost
of our funding and changes may be influenced by market perceptions of our creditworthiness. Changes to our credit spreads occur continuously and may be unpredictable and highly volatile. If wholesale markets financing ceases to become available, or
becomes excessively expensive, we may be forced to raise the rates we pay on deposits, with a view to attracting more customers, and/or to sell assets, potentially at depressed prices. The persistence or worsening of these adverse market conditions
or an increase in base interest rates could have a material adverse effect on our ability to access liquidity and cost of funding (whether directly or indirectly).

In response to the financial crisis, central banks around the world, including the US Federal Reserve Bank and the ECB, made coordinated efforts to increase liquidity in
the financial markets by taking measures such as increasing the amounts they lend directly to financial institutions, lowering interest rates and ensuring that currency swaps markets remain liquid. It remains uncertain for how long such measures
will remain in place and to what extent they may be added to in the light of economic developments. In addition to the BoE Base Rate cut on 4 August 2016, the Bank of England announced a quantitative easing programme to purchase £70bn of
assets, comprising £10bn of corporate bonds and £60bn of gilts. In December 2016 the ECB announced an extension to their quantitative easing programme until the end of 2017, albeit with a scaled down monthly volume of purchases from
April 2017 of 60bn (from 80bn). If these current facilities were rapidly removed or significantly reduced, this could have an adverse
effect on our ability to access liquidity and on our funding costs. In the United States (US), the Federal Reserve increased its short-term interest rate by 25 basis points in December 2016 and is forecasting three further interest rate increases in
2017.

In October 2013, the BoE updated its Sterling Monetary Framework to provide more transparent liquidity insurance support in exceptional circumstances. The
Indexed Long-Term Repo Facility will now be available to support regular bank requirements for liquidity while the Discount Window Facility has been reinforced as support for banks experiencing idiosyncratic stress. The Collateralised Term Repo
Facility will be made available to support markets in the event of a market wide liquidity stress. Further, on 4 August 2016, the Bank of England announced the Term Funding Scheme (TFS), which allows participants to borrow central bank reserves
in exchange for eligible collateral. The drawdown period under the TFS will run from 19 September 2016 to 28 February 2018. The TFS is being made available to banks and building societies that are participants in the Bank of Englands
Sterling Monetary Framework and signed up to the Discount Window Facility. At 31 December 2016, we had drawn £4.5bn under the TFS. In addition to the TFS, we participated in the Funding for Lending Scheme (FLS). At 31 December 2016,
we had drawn £3.2bn of UK treasury bills under the FLS. The availability of the BoE facilities described above for UK financial institutions, to the extent that they provide us with access to cheaper and more attractive funding than other
sources, reduces our reliance on retail and/or wholesale markets. To the extent that we make use of these BoE facilities, any significant reduction or withdrawal of those facilities would increase our funding costs.

Each of the factors described above (the persistence or worsening of adverse market conditions, and the lack of availability, or withdrawal, of such central bank schemes
or an increase in base interest rates) could have a material adverse effect on our liquidity and the cost of funding (whether directly or indirectly).

Further, we
aim for a funding structure that is consistent with our assets, avoids excessive reliance on short-term wholesale funding, attracts enduring commercial deposits and provides diversification in products and tenor. We therefore rely, and will continue
to rely, on commercial deposits to fund a significant proportion of lending activities. The ongoing availability of this type of funding is sensitive to a variety of factors outside our control, such as general economic conditions and the confidence
of commercial depositors in the economy, in general and in the financial services industry, and the availability and extent of deposit guarantees, as well as competition between banks for deposits or competition with other products, such as mutual
funds. A change in any of these factors could significantly increase the amount of commercial deposit withdrawals in a short period of time, thereby reducing our ability to access commercial deposit funding on appropriate terms, or at all, in the
future.

We anticipate that our customers will continue to make deposits (particularly demand deposits and short-term time deposits), and we intend to maintain our
emphasis on the use of banking deposits as a source of funds. The short-term nature of some deposits could cause liquidity problems for us in the future if deposits are not made in the volumes we expect or are not renewed. If a substantial number of
our depositors withdraw their demand deposits or do not roll over their time deposits upon maturity, we may be materially and adversely affected. For additional information about our liquidity position and other liquidity matters, including the
policies and procedures we use to manage our liquidity risks, see Risk review  Liquidity risk on pages 90 to 105.

A sudden or unexpected shortage
of funds in the banking system could threaten the stability of the banking system and lead to increased funding costs, a reduction in the term of funding instruments or require us to liquidate certain assets. If these circumstances were to arise,
this could have a material adverse effect on our operating results, financial condition and prospects.

We are subject to liquidity
requirements that could limit our operations, and changes to these requirements may further limit and adversely affect our operating results, financial condition and prospects

The PRA has responsibility for the micro-prudential regulation of banks and certain other financial institutions. In June 2015, the PRA issued its policy statement on
the transfer of the liquidity regime to the CRD IV standard, confirming that the existing regime under BIPRU 12 would cease to apply with effect from 1 October 2015, although certain of the BIPRU requirements are reflected in the new regime.





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Under CRD IV, banks are, or under transitional measures will be, required to meet two new liquidity
standards, consisting of the Liquidity Coverage Ratio (LCR) and the Net Stable Funding Ratio (NSFR) metrics, which are aimed to promote:

| | - | The short-term resilience of banks liquidity risk profiles by ensuring they have sufficient high-quality liquid assets to survive a significant stress scenario
| | - | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

| | - | A longer-term resilience by creating incentives for banks to fund their activities with more stable sources of funding on an ongoing basis.
| | - | -------------------------------------------------------------------------------------------------------------------------------------------

LCR

The LCR is intended to ensure that a bank maintains an adequate level of
unencumbered, high quality liquid assets which can be used to offset the net cash outflows the bank could encounter under a short-term significant liquidity stress scenario. The LCR was introduced in the UK on 1 October 2015. The PRA has opted
to impose higher liquidity coverage requirements than the minimum required by CRD IV during the phase-in period to 1 January 2018. The current minimum requirement for UK banks is set at 90% from 1 January 2017 and rising to 100% from
1 January 2018. Our current liquidity position is in excess of the minimum requirements set by the PRA, however there can be no assurance that future changes to the applicable liquidity requirements would not have an adverse effect on our
financial performance.

NSFR

In October 2014, the Basel Committee
published its final standard of the NSFR which will take effect on 1 January 2018. The NSFR is defined as the amount of available stable funding relative to the amount of required stable funding. Banks are expected to hold an NSFR of at least
100% on an ongoing basis and report its NSFR at least quarterly. Ahead of its planned implementation on 1 January 2018, the NSFR will remain subject to an observation period.

There is a risk that implementing and maintaining existing and new liquidity requirements, such as through enhanced liquidity risk management systems, may incur
significant costs, and more stringent requirements to hold liquid assets may materially affect our lending business as more funds may be required to acquire or maintain a liquidity buffer, thereby reducing future profitability. This could in turn
adversely impact our operating results, financial condition and prospects.

Exposure to UK Government debt could have a material adverse
effect on us

Like many other UK banks, we invest in debt securities of the UK Government largely for liquidity purposes. At 31 December 2016,
approximately 1% of our total assets and 35% of our securities portfolio were comprised of debt securities issued by the UK Government. Any failure by the UK Government to make timely payments under the terms of these securities, or a significant
decrease in their market value, will have a material adverse effect on us.

We may suffer adverse effects as a result of the political,
economic and sovereign debt tensions in the eurozone

Conditions in the capital markets and the economy generally in the eurozone continue to show signs of
fragility and volatility, with political tensions in Europe being particularly heightened in the past twelve months. In addition, interest rate differentials among eurozone countries are affecting government finance and borrowing rates in those
economies. These factors could have a material adverse effect on our operating results, financial condition and prospects.

The UK EU Referendum caused significant
volatility in the global stock and foreign exchange markets (for more information, see the risk factors entitled We are vulnerable to disruptions and volatility in the global financial markets and Exposure to UK political
developments, including the outcome of the UK referendum on membership of the EU, could have a material adverse effect on us). It may have also encouraged anti-EU and populist parties in other EU Member States, raising the potential for other
countries to seek to conduct referenda with respect to their continuing membership of the EU. On 4 December 2016, voters in Italy rejected constitutional reform proposals put forward by the Italian Prime Minister by way of referendum, which was
generally regarded as portraying an anti-EU sentiment (the Italian Referendum). Following the results of the UK EU Referendum and the Italian Referendum, the risk of further instability in the eurozone cannot be excluded, particularly in Germany,
France and the Netherlands, which are due to hold elections in 2017.

In the past, the ECB and European Council have taken actions with the aim of reducing the risk
of contagion in the eurozone and beyond and improving economic and financial stability. Notwithstanding these measures, a significant number of financial institutions throughout Europe have substantial exposures to sovereign debt issued by eurozone
(and other) nations, which may be under financial stress. Should any of those nations default on their debt, or experience a significant widening of credit spreads, major financial institutions and banking systems throughout Europe could be
adversely affected, with wider possible adverse consequences for global financial market conditions.

The high cost of capital for some European governments impacted
the wholesale markets in the UK, which resulted in an increase in the cost of retail funding and greater competition in the savings market. In the absence of a permanent resolution to issues that may contribute to adverse conditions in the eurozone,
conditions could deteriorate.

Although we conduct the majority of our business in the UK, we have direct and indirect exposure to financial and economic conditions
throughout the eurozone economies, including as a result of Banco Santander SA, and other affiliates being situated in the eurozone. Concerns relating to sovereign defaults or a partial or complete break-up of the European Monetary Union, including
potential accompanying redenomination risks and uncertainties, have significantly increased in light of the political and economic factors mentioned above. For a further description of our country risk exposures, including eurozone and peripheral
eurozone exposures and redenomination risk, see Risk review  Country risk exposures on pages 127 to 128. In addition, general financial and economic conditions in the UK, which directly affect our operating results, financial
condition and prospects, may deteriorate as a result of conditions in the eurozone.





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We are exposed to risks faced by other financial institutions

We routinely transact with counterparties in the financial services industry, including brokers and dealers, commercial banks, investment banks, mutual funds, hedge
funds and other institutional clients. Defaults by, and even rumours or questions about the solvency of certain financial institutions and the financial services industry generally, have led to market-wide liquidity problems and could lead to losses
or defaults by other institutions. Many of the routine transactions we enter into expose us to significant credit risk in the event of default by one of our significant counterparties. A default by a significant financial counterparty, or liquidity
problems in the financial services industry generally, could have a material adverse effect on us.

An adverse movement in our external credit
rating would likely increase our cost of funding, require us to post additional collateral or take other actions under some of our derivative contracts and adversely affect our interest margins and results of operations

Credit ratings can in some instances affect the cost and other terms upon which we are able to obtain funding. Credit rating agencies regularly evaluate us, and their
credit ratings of our institution and our debt in issue are based on a number of factors, including our financial strength, the financial strength of Banco Santander SA, and that of the UK economy and conditions affecting the financial services
industry generally.

Any downgrade in the external credit ratings assigned to us or any of our debt securities could have an adverse impact on us. In particular,
such downgrade in our credit ratings could increase our borrowing costs and could require us to post additional collateral or take other actions under some of our derivative contracts, and could limit our access to capital markets and adversely
affect our commercial business. For example, a credit rating downgrade could adversely affect our ability to sell or market certain of our products, engage in certain longer-term transactions and derivatives transactions and retain our customers,
particularly customers who need a minimum rating threshold in order to invest.

In addition, under the terms of certain of our derivative contracts and other
financial commitments, we may be required to maintain a minimum credit rating or otherwise our counterparties may be able to terminate such contracts or require the posting of collateral. Any of these results of a credit rating downgrade could, in
turn, reduce our liquidity and have an adverse effect on us, including our operating results, financial condition and prospects. For example, we estimate that at 31 December 2016, if Fitch, Moodys and Standard & Poors were
concurrently to downgrade the long-term credit ratings of Santander UK plc by one notch, and thereby trigger a short-term credit rating downgrade, this could result in an outflow of £4.6bn of cash and collateral. A hypothetical two notch
downgrade would result in a further outflow of £0.4bn of cash and collateral at 31 December 2016. These outflow requirements are however captured under the LCR regime. However, while certain potential impacts are contractual and
quantifiable, the full consequences of a credit rating downgrade are inherently uncertain, as they depend upon numerous dynamic, complex and inter-related factors and assumptions, including market conditions at the time of any downgrade, whether any
downgrade of a firms long-term credit rating precipitates downgrades to its short-term credit rating, and assumptions about the potential behaviours of various customers, investors and counterparties. Actual outflows could be higher or lower
than this hypothetical example, depending upon certain factors including any management or restructuring actions that could be taken to reduce cash outflows and the potential liquidity impact from a loss of unsecured funding (such as from money
market funds) or loss of secured funding capacity.

Although unsecured and secured funding stresses are included in our stress testing scenarios and a portion of our
total liquid assets is held against these risks, it is still the case that a credit rating downgrade could have a material adverse effect on us. In addition, if certain counterparties terminated derivative contracts with us and we were unable to
replace such contracts, our market risk profile could be altered.

Following the results of the UK EU Referendum, S&P Global Ratings and Moodys Investors
Service affirmed the long-term credit ratings and changed the ratings outlooks of most major UK banks because of the medium term impact of political and market uncertainty (for further detail on our risk exposures as a result of the UK EU
Referendum, see the risk factor entitled Exposure to UK political developments, including the outcome of the UK referendum on membership of the EU, could have a material adverse effect on us). The Companys long-term debt is
currently rated investment grade by the major rating agencies: Aa3 with negative outlook by Moodys Investors Service, A with negative outlook by S&P Global Ratings and A with positive outlook by Fitch Ratings. If a downgrade of any
Santander UK group members long-term credit ratings were to occur, it could also impact the short-term credit ratings of other members of the Santander UK group. Should there be any removal of systemic support by the UK Government, all things
being equal, the impact on our long-term credit-rating could potentially increase the cost of some of our wholesale borrowing and our ability to secure both long-term and short-term funding may be reduced.

Further, following the results of the UK EU Referendum, the UKs sovereign credit rating was downgraded by Fitch Ratings and S&P Global Ratings, and its outlook
changed to negative by Moodys Investors Service. Changes to the UK sovereign credit rating, or the perception that further changes may occur, could have a material adverse effect on our operating results, financial condition, prospects and the
marketability and trading value of our securities. This might also impact on our own credit rating, borrowing costs and our ability to secure funding. Changes to the UK sovereign credit rating, or the perception that further changes may occur, could
also have a material effect in depressing consumer confidence, restricting the availability, and increasing the cost, of funding for individuals and companies, further depressing economic activity, increasing unemployment and/or reducing asset
prices.

There can be no assurance that the credit rating agencies will maintain our current credit ratings or outlooks. Our failure to maintain favourable credit
ratings and outlooks could increase our cost of funding and adversely affect our interest margins, which could have a material adverse effect on us.





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|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





Our financial results are constantly exposed to market risk. We are subject
to fluctuations in interest rates and other market risks, which may materially adversely affect us and our profitability

Market risk refers to the
probability of variations in our net interest income or in the market value of our assets and liabilities due to volatility of interest rates, exchange rates or equity prices.

Changes in interest rates would affect the following areas, among others, of our business:

| | - | Net interest income
| | - | -------------------

| | - | The value of our derivatives transactions
| | - | -----------------------------------------

| | - | The market value of our securities holdings
| | - | -------------------------------------------

| | - | The value of our loans and deposits
| | - | -----------------------------------

| | - | The volume of loans originated
| | - | ------------------------------

Interest rates are highly sensitive to many factors beyond our control, including
increased regulation of the financial sector, monetary policies, and domestic and international economic and political conditions. Variations in interest rates could affect the interest earned on our assets and the interest paid on our borrowings,
thereby affecting our net interest income, which comprises the majority of our revenue, reducing our growth rate and potentially resulting in losses. In addition, costs we incur as we implement strategies to reduce interest rate exposure could
increase in the future (which, in turn, will impact our results).

Increases in interest rates may reduce the volume of loans we originate. Sustained high interest
rates have historically discouraged customers from borrowing and have resulted in increased delinquencies in outstanding loans and deterioration in the quality of assets. Increases in interest rates may also reduce the propensity of our customers to
prepay or refinance fixed-rate loans, reduce the value of our financial assets and reduce gains or require us to record losses on sales of our loans or securities.

Due to the historically low interest rate environment in the UK in recent years, the rates on many of our interest-bearing deposit products have been priced at or near
zero, which may limit our ability to further reduce customer rates in the event of further cuts in BoE Base Rate and thus negatively impacting our margins. If the current low interest rate environment in the UK persists in the long term, it may be
difficult to increase our net interest income, which will impact our results.

We are also exposed to foreign exchange rate risk as a result of mismatches between
assets and liabilities denominated in different currencies. Fluctuations in the exchange rate between currencies may negatively affect our earnings and value of our assets and securities. Our capital is stated in pounds sterling and we do not fully
hedge our capital position against changes in currency exchange rates. Although we seek to hedge most of our currency risk, through hedging and the purchase of cross-currency swaps, these hedges do not eliminate currency risk and we can make no
assurance that we will not suffer adverse financial consequences as a result of currency fluctuations. The recent volatility in the value of the pound sterling in the wake of the result of the UK EU Referendum may persist as negotiations for exit
continue and continued significant exchange rate volatility and the depreciation of the pound sterling in particular could have an adverse impact on our results of operations and our ability to meet our US dollar and euro-denominated obligations,
and which could have a material adverse effect on our operating results, financial condition and prospects.

We are also exposed to equity price risk in our
investments in equity securities in the banking book and in the trading portfolio. The performance of financial markets may cause changes in the value of our investment and trading portfolios. The volatility of world equity markets, due to the
continued economic uncertainty and sovereign debt tensions, has had a particularly strong impact on the financial sector.

Continued volatility may affect the value
of our investments in equity securities and, depending on their fair value and future recovery expectations, could become a permanent impairment, which would be subject to write-offs against our results. To the extent any of these risks materialise,
our net interest income or the market value of our assets and liabilities could be adversely affected.

Market conditions have resulted in,
and could continue to result in, material changes to the estimated fair values of our financial assets. Negative fair value adjustments could have a material adverse effect on our operating results, financial condition and prospects

In the past nine years, financial markets have been subject to periods of significant stress resulting in steep falls in perceived or actual financial asset values,
particularly due to volatility in global financial markets and the resulting widening of credit spreads. We have material exposures to securities, loans, derivatives and other investments that are recorded at fair value and are therefore exposed to
potential negative fair value adjustments. Asset valuations in future periods, reflecting then prevailing market conditions, may result in negative changes in the fair values of our financial assets. In addition, the value ultimately realised by us
on disposal may be lower than the current fair value. Any of these factors could require us to record negative fair value adjustments, which may have a material adverse effect on our operating results, financial condition and prospects.

In addition, to the extent that fair values are determined using financial valuation models, such values may be inaccurate or subject to change, as the data used by such
models may not be available or may become unavailable due to changes in market conditions, particularly for illiquid assets and in times of economic instability. In such circumstances, our valuation methodologies require us to make assumptions,
judgements and estimates in order to establish fair value.

Reliable assumptions are difficult to make and are inherently uncertain. Moreover, valuation models are
complex, making them inherently imperfect predictors of actual results. Any consequential impairments or write-downs could have a material adverse effect on our operating results, financial condition and prospects.





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Failure to successfully implement and continue to improve our credit risk management systems could materially and adversely affect our business

As a commercial banking group, one of the main types of risks inherent in our business is credit risk. We assess the particular risk profile of a customer
using approved credit rating models, taking into account both quantitative and qualitative factors. This process could be subject to human and IT systems errors, which may result in credit ratings not correctly being assigned to customers and a
larger exposure to higher credit risks than indicated by our rating models.

In addition, we continuously refine our credit policies and guidelines to address
potential risks associated with particular industries or types of customers. However, we may not be able to detect all possible risks before they occur, or our employees may not be able to effectively implement our credit policies and guidelines due
to limited tools available to us, which may increase our credit risk.

Any failure to effectively implement, consistently monitor and refine our credit risk
management systems may result in an increase in the level of non-performing loans and higher losses than expected, which could have a material adverse effect on us.

We are subject to various risks associated with our derivative transactions that could have a material adverse effect on us

We enter into derivative transactions for trading purposes as well as for hedging purposes. We are subject to various risks associated with these transactions, including
market risk, operational risk, basis risk (the risk of loss associated with variations in the spread between the asset yield and the funding and/or hedge cost) and credit or counterparty risk (the risk of insolvency or other inability of the
counterparty to a particular transaction to perform its obligations thereunder, including providing sufficient collateral).

Market practices and documentation for
derivative transactions in the UK may differ from those in other countries. In addition, the execution and performance of these transactions depend on our ability to develop adequate control and administration systems. Moreover, our ability to
adequately monitor, analyse and report derivative transactions continues to depend, largely, on our information technology systems. These factors further increase the risks associated with these transactions and could have a material adverse effect
on us.

Operational risks, including risks relating to data and information collection, processing, storage and security are inherent in our
business

Like other financial institutions we manage and hold confidential personal information of customers in the conduct of our banking operations, as
well as a large number of assets. Accordingly, our business depends on the ability to process a large number of transactions efficiently and accurately, and on our ability to rely on our people, digital technologies, computer and email services,
software and networks, as well as the secure processing, storage and transmission of confidential, sensitive personal data and other information using our computer systems and networks. The proper functioning of financial control, accounting or
other data collection and processing systems is critical to our businesses and to our ability to compete effectively. Losses can result from inadequate personnel, human error, inadequate or failed internal control processes and systems or from
external events that interrupt normal business operations. We also face the risk that the design of our controls and procedures prove to be inadequate or are circumvented such that our data and/or client records are incomplete, not recoverable or
not securely stored. Although we work with our clients, vendors, service providers, counterparties and other third parties to develop secure data and information processing, storage and transmission capabilities to prevent against information
security risk, we routinely manage personal, confidential and proprietary information by electronic means, and we may be the target of attempted cyber-attack. If we cannot maintain an effective and secure electronic data and information, management
and processing system or we fail to maintain complete physical and electronic records, this could result in regulatory sanctions and serious reputational or financial harm to us.

Infrastructure and technology resilience

We take protective measures and
continuously monitor and develop our systems to safeguard our technology infrastructure, data and information from misappropriation or corruption, but our systems, software and networks nevertheless may be vulnerable to unauthorised access, misuse,
computer viruses or other malicious code and other events that could have a security impact. An interception, misuse or mishandling of personal, confidential or proprietary information sent to or received from a client, vendor, service provider,
counterparty or third party could result in legal liability, regulatory action, reputational harm and financial loss. Furthermore, we may be required to expend significant additional resources to modify our protective measures or to investigate and
remediate vulnerabilities or other exposures. There can be no absolute assurance that we will not suffer material losses from operational risks in the future, including those relating to any security breaches.

Cyber security

In particular, we have seen in recent years computer systems
of companies and organisations being targeted, not only by cyber criminals, but also by activists and rogue states. In common with other financial institutions, we manage and hold confidential personal information of customers in the conduct of our
banking operations, as well as a large number of assets. Accordingly we have been and continue to be subject to a range of cyber-attacks, such as denial of service, malware and phishing. This included an incident in 2016 that resulted in our
customers experiencing slow performance logging in and performing transactions via our digital channels (online and mobile banking services) and was caused by a denial of service attack, launched by an unknown external third party. Cyber-attacks
could give rise to the loss of significant amounts of customer data and other sensitive information, as well as significant levels of liquid assets (including cash). In addition, cyber-attacks could give rise to the disablement of our electronic
systems used to service our customers. As attempted attacks continue to evolve in scope and sophistication, we may incur significant costs in order to modify or enhance our protective measures against such attacks, or to investigate or remediate any
vulnerability or resulting breach, or in communicating cyber-attacks to our customers. If we fail to effectively manage our cyber security risk, e.g. by failing to update our systems and processes in response to new threats, this could harm our
reputation and adversely affect our operating results, financial condition and prospects through the payment of customer compensation, regulatory penalties and fines and/or through the loss of assets.





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|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





In addition, we may also be impacted by cyber-attacks against national critical infrastructures in
the UK, for example, the telecommunications network. In common with other financial institutions we are dependent on such networks and any cyber-attack against these networks could negatively affect our ability to service our customers. As we do not
operate these networks, we have limited ability to protect our business from the adverse effects of cyber-attack against them.

Further, the domestic and global
financial services industry, including key financial market infrastructure, may be the target of cyber disruption and attack by cyber criminals, activists and rogue states looking to cause economic instability. We have limited ability to protect our
business from the adverse effects of cyber disruption or attack against our counterparties and key financial market infrastructure. If such a disruption or attack were to occur it could cause serious operational and financial harm to us.

Procedure and policy compliance

We also manage and hold confidential personal
information of customers in the conduct of our banking operations. Although we have procedures and controls to safeguard personal information in our possession, unauthorised disclosures could subject us to legal actions and administrative sanctions
as well as damages and reputational harm that could materially and adversely affect our operating results, financial condition and prospects. Further, our business is exposed to risk from potential non-compliance with policies, employee misconduct
or negligence and fraud, which could result in regulatory sanctions and serious reputational or financial harm. In recent years, a number of multinational financial institutions have suffered material losses due to the actions of rogue
traders or other employees. It is not always possible to deter or prevent employee misconduct, and the precautions we take to detect and prevent this activity may not always be effective. We may be required to report events related to
information security issues (including any cyber security issues), events where customer information may be compromised, unauthorised access and other security breaches, to the relevant regulatory authorities. Any material disruption or slowdown of
our systems could cause information, including data related to customer requests, to be lost or to be delivered to our clients with delays or errors, which could reduce demand for our services and products and could materially and adversely affect
us.

We may fail to detect or prevent money laundering and other financial crime activities due to not correctly identifying our financial
crime risks and failing to implement effective controls to mitigate those risks. This could expose us to heavy fines, additional regulatory scrutiny, increased liability and civil claims and reputational risk

We are obligated to comply with applicable anti-money laundering (AML), anti-terrorism, anti-bribery and corruption, sanctions and other laws and regulations in the
jurisdictions in which we operate. These laws and regulations require us, among other things, to conduct full customer due diligence (including in respect of sanctions and politically-exposed person screening), keep our customer, account and
transaction information up to date and implement effective financial crime policies and procedures detailing what is required from those responsible. We are also required to conduct financial crime training for our staff and to report suspicious
transactions and activity to appropriate law enforcement following full investigation by the Suspicious Activity Reporting Unit.

Financial crime has become the
subject of enhanced regulatory scrutiny and supervision by regulators globally. AML, anti-bribery and corruption and sanctions laws and regulations are increasingly complex and detailed and have become the subject of enhanced regulatory supervision,
requiring improved systems, sophisticated monitoring and skilled compliance personnel. For more information, see the risk factor entitled We are subject to substantial regulation and governmental oversight which could adversely affect our
business and operations.

We have developed policies and procedures aimed at detecting and preventing the use of our banking network for money laundering and
financial crime related activities. These require the implementation and embedding within the business of effective controls and monitoring, which requires ongoing changes to systems and operational activities. Financial crime is continually
evolving, and the expectation of regulators is increasing (for more information, see the risk factor entitled We are subject to substantial regulation and governmental oversight which could adversely affect our business and operations).
This requires similarly proactive and adaptable responses from us so that we are able to deter threats and criminality effectively. Even known threats can never be fully eliminated, and there will be instances where we may be used by other parties
to engage in money laundering and other illegal or improper activities. In addition, we rely heavily on our staff to assist us by spotting such activities and reporting them, and our staff have varying degrees of experience in recognising criminal
tactics and understanding the level of sophistication of criminal organisations. Where we outsource any of our customer due diligence, customer screening or anti financial crime operations, we remain responsible and accountable for full compliance
and any breaches. If we are unable to apply the necessary scrutiny and oversight there remains a risk of regulatory breach.

If we are unable to fully comply with
applicable laws, regulations and expectations, our regulators and relevant law enforcement agencies have the ability and authority to impose significant fines and other penalties on us, including requiring a complete review of our business systems,
day-to-day supervision by external consultants and ultimately the revocation of our banking licence. The reputational damage to our business and global brand would be severe if we were found to have breached AML, anti-bribery and corruption or
sanctions requirements. Our reputation could also suffer if we are unable to protect our customers or our business from being used by criminals for illegal or improper purposes.

In addition, while we review our relevant counterparties internal policies and procedures with respect to such matters, we, to a large degree, rely upon our
relevant counterparties to maintain and properly apply their own appropriate AML procedures. Such measures, procedures and compliance may not be completely effective in preventing third parties from using our (and our relevant counterparties)
services as a conduit for money laundering (including illegal cash operations) without our (or our relevant counterparties) knowledge. If we are associated with, or even accused of being associated with, or become a party to, money laundering,
then our reputation could suffer and/or we could become subject to fines, sanctions and/or legal enforcement (including being added to black lists that would prohibit certain parties from engaging in transactions with us), any one of
which could have a material adverse effect on our operating results, financial condition and prospects. Any such risks could have a material adverse effect on our operating results, financial condition and prospects.





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Any failure to effectively improve or upgrade our information technology infrastructure and management information systems in a timely manner could
have a material adverse effect on us

Our businesses and our ability to remain competitive depend to a significant extent upon the functionality of our
information technology systems (including Partenon, the global banking information technology platform utilised by the Santander UK group and Banco Santander SA), and on our ability to upgrade and expand the capacity of our information technology on
a timely and cost-effective basis. The proper functioning of our financial control, risk management, credit analysis and reporting, accounting, customer service and other information technology systems, as well as the communication networks between
branches and main data processing centres, are critical to our businesses and our ability to compete. We must continually make significant investments and improvements in our information technology infrastructure in order to remain competitive. We
cannot be certain that in the future we will be able to maintain the level of capital expenditure necessary to support the improvement, expansion or upgrading of our information technology infrastructure as effectively as our competitors; this may
result in a loss of any competitive advantages that our information technology systems provide. Any failure to effectively improve, expand or upgrade our information technology infrastructure and management information systems in a timely manner
could have a material adverse effect on us.

We may be exposed to unidentified or unanticipated risks despite our risk management policies,
procedures and methods

The management of risk is an integral part of our activities. We seek to monitor and manage our risk exposure through a variety of
risk reporting systems. For a further description of our risk management framework see the Risk review on pages 32 to 128. While we employ a broad and diversified set of risk monitoring and risk mitigation techniques, such techniques and
strategies may not be fully effective in mitigating our risk exposure in all economic market environments or against all types of risk, including risks that we fail to identify or anticipate.

Some of our tools and metrics for managing risk are based upon our use of observed historical market behaviour. We apply statistical and other tools to these
observations to arrive at quantifications of our risk exposures. These tools and metrics may fail to predict future risk exposures. These risk exposures could, for example, arise from factors we did not anticipate or correctly evaluate in our
statistical models. This would limit our ability to manage our risks. Our losses thus could be significantly greater than the historical measures indicate. In addition, our quantified modelling does not take all risks into account. Our more
qualitative approach to managing those risks could prove insufficient, exposing us to material, unanticipated losses. We could face adverse consequences as a result of decisions, which may lead to actions by management, based on models that are
poorly developed, implemented or used, or as a result of the modelled outcome being misunderstood. If existing or potential customers or counterparties believe our risk management is inadequate, they could take their business elsewhere or seek to
limit their transactions with us. This could have a material adverse effect on our reputation, operating results, financial condition and prospects.

Competition with other financial institutions could adversely affect us

We face substantial competition in all parts of our business,
including originating loans and attracting deposits through our banking subsidiaries. The competition in originating loans comes principally from other domestic and foreign banks, building societies, consumer finance companies, insurance companies
and other lenders and purchasers of loans. The market for UK financial services is highly competitive and we face substantial competition in all parts of our business. As such, we constantly monitor competition, which arises from a number of
financial institutions of different sizes and with a range of business models. Moreover, the financial crisis has and continues to reshape the banking landscape in the UK, reinforcing the importance of having a retail deposit funding base and being
well capitalised. Our direct competitors have moved increasingly towards a policy of concentrating on the highest quality customers and there is strong competition for these customers.

Additionally, a large number of new entrants are increasingly entering the UK financial services market place. Again we identify and closely monitor this set of new
entrants and take account of this in the firms management actions. Their arrival has further intensified competition as they seek to gain market share in a number of banking sectors, including for example payments, investments, lending,
foreign exchange and data aggregation. We also face competition from non-bank competitors, such as supermarkets, department stores, electronic money institutions and technology firms, and generally from other loan or credit providers. We also
compete with the UK Government owned National Savings & Investments for deposits.

Further, the rise in customer use of internet and mobile banking
platforms in recent years could negatively impact our investments in bank premises, equipment and personnel for our branch network. The persistence or acceleration of this shift in demand towards internet and mobile banking may necessitate changes
to our retail distribution strategy, which may include closing and/or selling certain branches and restructuring our remaining branches and work force. These actions could lead to losses on these assets and may lead to increased expenditures to
renovate, reconfigure or close a number of our remaining branches or to otherwise reform our retail distribution channel. Furthermore, our failure to swiftly and effectively implement such changes to our distribution strategy could have an adverse
effect on our competitive position.

We expect competition to intensify in response to consumer demand, technological changes, the potential impact of consolidation,
regulatory actions and other factors. With effect from 1 April 2013, the FS Act amended the FSMA to include the FCAs operational objectives of promoting effective competition in the interests of consumers in the markets for regulated
financial services. Since 1 April 2015, the FCA has also been able to use concurrent competition powers under the Enterprise Act 2002 and the Competition Act 1998 to promote competition. There will be structural reform of the UK banking sector
as banks implement The Financial Services (Banking Reform) Act 2013 which may lead to increased competition in UK Retail or wholesale banking activities. A strong political and regulatory will to foster consumer choice in financial services could
lead to even greater competition (for more information, see the risk factor entitled We are subject to substantial regulation and government oversight which could adversely affect our business and operations). There can be no assurance
that this increased competition will not adversely affect our growth prospects, and therefore our operations.

If financial markets remain unstable, financial
institution consolidation may continue (whether as a result of the UK Government taking ownership and control over other financial institutions in the UK or otherwise). Financial institution consolidation could also result from the UK
Governments recent disposals of stakes in financial institutions it previously controlled and any future disposals of retained stakes in other financial institutions. Such consolidation, by increasing the size and capabilities of our
competitors could adversely affect our operating results, financial condition and prospects. There can be no assurance that this will not adversely affect our growth prospects, and therefore our operations.





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We consider competition in our management actions as appropriate, such as pricing and product
decisions. Increasing competition could mean that we increase our rates offered on deposits or lower the rates we charge on loans, which could also have a material adverse effect on us, including our profitability. It may also negatively affect our
business results and prospects by, among other things, limiting our ability to increase our customer base and expand our operations and increasing competition for investment opportunities.

Our ability to maintain our competitive position depends, in part, on the success of new products and services we offer our customers and our
ability to continue offering products and services from third parties, and we may not be able to manage various risks we face as we expand our range of products and services that could have a material adverse effect on us

The success of our operations and our profitability depends, in part, on the success of new products and services we offer our customers. However, we cannot guarantee
that our new products and services will be responsive to customer demands or that they will be successful. In addition, our customers needs or desires may change over time, and such changes may render our products and services obsolete,
outdated or unattractive, and we may not be able to develop new products that meet our customers changing needs. If we cannot respond in a timely fashion to the changing needs of our customers, we may lose customers, which could in turn
materially and adversely affect us.

As we expand the range of our products and services, some of which may be at an early stage of development in the UK market, we
will be exposed to known, new and potentially increasingly complex risks, including conduct risk, and development expenses. Our employees and risk management systems, as well as our experience and that of our partners, may not be sufficient to
enable us to properly manage such risks. In addition, the cost of developing products that are not launched is likely to affect our operating results.

While we have
successfully increased our customer service levels in recent years, should these levels ever be perceived by the market to be materially below those of our competitor financial institutions, we could lose existing and potential business. If we are
not successful in retaining and strengthening customer relationships, we may lose market share, incur losses on some or all of our activities or fail to attract new deposits or retain existing deposits, which could have a material adverse effect on
our operating results, financial condition and prospects.

Any or all of the above factors, individually or collectively, could have a material adverse effect on us.

If the level of non-performing loans increases or the credit quality of our loans deteriorates in the future, or if our loan loss reserves
are insufficient to cover loan losses, this could have a material adverse effect on us

Risks arising from changes in credit quality and the recoverability of
loans and amounts due from counterparties are inherent in a wide range of our businesses. Non-performing or low credit quality loans have in the past, and can continue to, negatively impact our operating results, financial condition and prospects.
In particular, the amount of our reported non-performing loans may increase in the future as a result of growth in our total loan portfolio, including as a result of loan portfolios that we may acquire in the future (the credit quality of which may
turn out to be worse than we had anticipated), or factors beyond our control, such as adverse changes in the credit quality of our borrowers and counterparties, a general deterioration in the UK or global economic conditions, the impact of political
events, events affecting certain industries or events affecting financial markets and global economies. We cannot be sure that we will be able to effectively control the level of impaired loans in, or the credit quality of, our total loan portfolio,
which could have a material adverse effect on us.

Interest rates payable on a significant portion of our outstanding mortgage loan products fluctuate over time due
to, among other factors, changes in the BoE Base Rate. As a result borrowers with variable interest rate mortgage loans are exposed to increased monthly payments when the related mortgage interest rate adjusts upward. Similarly, borrowers of
mortgage loans with fixed or introductory rates adjusting to variable rates after an initial period are exposed to the risk of increased monthly payments at the end of this period. Over the last few years both variable and fixed interest rates have
been at relatively low levels, which has benefited borrowers of new loans and those repaying existing variable rate loans regardless of special or introductory rates. Future increases in borrowers required monthly payments may result in higher
delinquency rates and losses related to non-performing loans in the future. Borrowers seeking to avoid these increased monthly payments by refinancing their mortgage loans may no longer be able to find available replacement loans at comparably low
interest rates. These events, alone or in combination, may contribute to a larger non-performing loan portfolio, which could have a material adverse effect on us.

Our current loan loss reserves may not be adequate to cover an increase in the amount of non-performing loans or any future deterioration in the overall credit quality
of our total loan portfolio. Our loan loss reserves are based on our current assessment of various factors affecting the quality of our loan portfolio, including our borrowers financial condition, repayment abilities, the realisable value of
any collateral, the prospects for support from any guarantor, government macroeconomic policies, interest rates and the legal and regulatory environment. As the global financial crisis demonstrated, many of these factors are beyond our control. As a
result, there is no precise method for predicting loan and credit losses, and we cannot provide any assurance that our current or future loan loss reserves will be sufficient to cover actual losses.

If our assessment of and expectations concerning the above mentioned factors differ from actual developments we may need to increase our loan loss reserves, which may
adversely affect us. Additionally, in calculating our loan loss reserves, we employ qualitative tools and statistical models which may not be reliable in all circumstances and which are dependent upon data that may not be complete. If we are unable
to control or reduce the level of our non-performing or poor credit quality loans, this could have a material adverse effect on us.

Our loan
portfolio is subject to risk of prepayment, which could have a material adverse effect on us

Our loan portfolio is subject to prepayment risk resulting from
the ability of a borrower or issuer to pay a debt obligation prior to maturity. Generally, in a low interest rate environment, prepayment activity increases, which reduces the weighted average lives of our earning assets and could have a material
adverse effect on us. As a result we would be required to amortise net premiums into income over a shorter period of time, thereby reducing the corresponding asset yield and net interest income and there is a risk that we are not able to accurately
forecast amortisation schedules for these purposes which may affect our profitability. Prepayment risk also has a significant adverse impact on credit card and collateralised mortgage loans, since prepayments could shorten the weighted average life
of these assets, which may result in a mismatch in our funding obligations and reinvestment at lower yields. The risk of prepayment and our ability to accurately forecast amortisation schedules is inherent to our commercial activity and an increase
in prepayments or a failure to accurately forecast amortisation schedules could have a material adverse effect on us.





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The value of the collateral, including real estate, securing our loans may not be sufficient, and we may be unable to realise the full value of the
collateral securing our loan portfolio

The value of the collateral securing our loan portfolio may significantly fluctuate or decline due to factors beyond
our control, including macroeconomic factors affecting the UKs economy. Our residential mortgage loan portfolio is one of our principal assets, comprising 77% of our loan portfolio at 31 December 2016. As a result, we are highly exposed
to developments in the residential property market in the UK.

House purchase activity has slowed since the UK EU Referendum, most noticeably in central London,
although house purchase activity generally continues to be supported by certain economic fundamentals including low mortgage rates, healthy consumer confidence levels, falling unemployment and positive real earnings growth. Nevertheless, any
increase in house prices may be limited should real earnings growth weaken. The depth of the previous house price declines as well as the continuing uncertainty as to the extent and sustainability of the UK economic recovery will mean that losses
could be incurred on loans should they go into possession.

The value of the collateral securing our loan portfolio may also be adversely affected by force majeure
events such as natural disasters like floods or landslides. Any force majeure event may cause widespread damage and could have an adverse impact on the economy of the affected region and may therefore impair the asset quality of our loan portfolio
in that area.

We may also not have sufficiently up-to-date information on the value of collateral, which may result in an inaccurate assessment for impairment
losses of our loans secured by such collateral. If any of the above were to occur, we may need to make additional provisions to cover actual impairment losses of our loans, which may materially and adversely affect our operating results, financial
condition and prospects.

If we are unable to manage the growth of our operations, this could have an adverse impact on our profitability

We allocate management and planning resources to develop strategic plans for organic growth, and to identify possible acquisitions and disposals and areas
for restructuring our businesses when necessary. From time to time, we evaluate acquisition and partnership opportunities that we believe could offer additional value to our shareholders and are consistent with our business strategy. However, we may
not be able to identify suitable acquisition or partnership candidates, and we may not be able to acquire promising targets or form partnerships on favourable terms, or at all. Furthermore, preparations for acquisitions that we do not complete can
be disruptive. We base our assessment of potential acquisitions and partnerships on limited and potentially inexact information and on assumptions with respect to value, operations, profitability and other matters that may prove to be incorrect. Our
ability to benefit from any such acquisitions and partnerships will depend in part on our successful integration of those businesses. Such integration entails significant risks such as challenges in retaining the customers and employees of the
acquired businesses, unforeseen difficulties in integrating operations and systems and unexpected liabilities or contingencies relating to the acquired businesses, including legal claims. We can give no assurances that our expectations with regards
to integration and synergies will materialise. We cannot provide assurance that we will, in all cases, be able to manage our growth effectively or deliver our strategic growth decisions including our ability to:

| | - | Manage efficiently our operations and employees of expanding businesses
| | - | -----------------------------------------------------------------------

| | - | Maintain or grow our existing customer base
| | - | -------------------------------------------

| | - | Fully due diligence and assess the value, strengths and weaknesses of investment or acquisition candidates
| | - | ----------------------------------------------------------------------------------------------------------

| | - | Finance strategic opportunities, investments or acquisitions
| | - | ------------------------------------------------------------

| | - | Fully integrate strategic investments, or newly-established entities or acquisitions, in line with our strategy
| | - | ---------------------------------------------------------------------------------------------------------------

| | - | Align our current information technology systems adequately with those of an enlarged group
| | - | -------------------------------------------------------------------------------------------

| | - | Apply our risk management policy effectively to an enlarged group
| | - | -----------------------------------------------------------------

| | - | Manage a growing number of entities without over-committing management or losing key personnel.
| | - | -----------------------------------------------------------------------------------------------

Any failure to manage
growth effectively, including any or all of the above challenges associated with our growth plans, could have a material adverse effect on our operating results, financial condition and prospects. In addition, any acquisition or venture could result
in the loss of key employees and inconsistencies in standards, controls, procedures and policies. Moreover, the success of the acquisition or venture will at least in part be subject to a number of political, economic and other factors that are
beyond our control. Any or all of these factors, individually or collectively, could have a material adverse effect on us.

Goodwill
impairments may be required in relation to acquired businesses

We have made business acquisitions in past years and may make further acquisitions in the
future. It is possible that the goodwill which has been attributed, or may be attributed, to these businesses may have to be written-down if our valuation assumptions are required to be reassessed as a result of any deterioration in their underlying
profitability, asset quality and other relevant matters. Impairment testing in respect of goodwill is performed annually, and more frequently if there are impairment indicators present, and comprises a comparison of the carrying amount of the
cash-generating unit with its recoverable amount. Goodwill impairment does not however affect our regulatory capital. Whilst no impairment of goodwill was recognised in 2015 or 2016, there can be no assurances that we will not have to write down the
value attributed to goodwill in the future, which would adversely affect our results and net assets.

We are responsible for contributing to
compensation schemes in the UK in respect of banks and other authorised financial services firms that are unable to meet their obligations to customers

In
the UK, the Financial Services Compensation Scheme (FSCS) was established under FSMA and is the UKs statutory fund of last resort for customers of authorised financial services firms. The FSCS can pay compensation to customers if a
PRA-authorised or FCA-authorised firm is unable, or likely to be unable, to pay claims against it (for instance, an authorised bank is unable to pay claims by depositors). The FSCS is funded by levies on firms authorised by the PRA or the FCA (i.e.
participant firms), including members of the Santander UK group.





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|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





Following the default of a number of authorised financial services firms since 2008, the FSCS
borrowed funds totalling approximately £18bn from HM Treasury to meet the compensation costs for customers of those firms. The substantial majority of the principal should be repaid from funds the FSCS levies from asset sales, surplus cash
flow or other recoveries in relation to assets of the firms that defaulted. However, the FSCS estimates that the assets of these failed institutions are insufficient, and, to the extent that there remains a shortfall, the FSCS is recovering this
shortfall by levying firms authorised by the PRA or the FCA in instalments. For the year ended 31 December 2016, we charged £34m to the income statement in respect of the costs of the FSCS.

The FSCS also has the power to impose management expenses in respect of relevant schemes levy (MERS levy) in relation to its potential role as agent of other
compensation schemes. The FSCS may impose a MERS levy on participant firms to meet expenses it incurs in its role as agent.

In the event that the FSCS raises
further funds from participant firms or increases the levies to be paid by such firms or the frequency at which the levies are to be paid, the associated cost to us may have a material adverse effect on our operating results, financial condition and
prospects. Since 2008, measures taken to protect the depositors of deposit-taking institutions involving the FSCS, such as the borrowing from HM Treasury mentioned above, have resulted in a significant increase in the levies made by the FSCS on the
industry and such levies may continue to go up if similar measures are required to protect depositors of other institutions. In addition, following amendments to the preferred credit status of depositors that came into force on 31 December
2014, the FSCS stands in the place of depositors of a failing institution and has preferred status over an institutions other creditors.

Regulatory reform
initiatives in the UK and internationally may result in further changes to the FSCS, which could result in additional costs and risks for us. For example, a recast EU Deposit Guarantee Scheme Directive (the DGSD) entered into force on 2 July
2014, introducing a tighter definition of deposits and includes a requirement that the Deposit Guarantee Scheme pay customers within a week and a requirement that banks must be able to provide information on the aggregated deposits of a depositor.
These revisions may affect the methodology employed by the FSCS for determining levies on institutions. In addition, the DGSD also required EU Member States to ensure that, by 3 July 2014, the available financial means of deposit guarantee
schemes reach a minimum target level of 0.8% of the covered deposits of their members and requires deposit guarantee schemes to be ex-ante funded. Between April and July 2015, the PRA published its final rules implementing the DGSD, most of which
took effect on 3 July 2015. The final rules enable the FSCS to use the existing bank levy to meet the ex-ante funding requirements in the DGSD. Changes as a result of this may affect our profitability.

FSCS levies are collected by the FCA as part of a single payment by firms covering the FCA, the PRA, the FOS and the FSCS fees. It is possible that future policy of the
FSCS and future levies on the firms authorised by the FCA or PRA may differ from those at present and that this could lead to a period of some uncertainty for members of the Santander UK group. In addition, it is possible that other jurisdictions
where we operate could introduce or amend their similar compensation, contributory or reimbursement schemes. As a result of any such developments, we may incur additional costs and liabilities which may adversely affect our operating results,
financial condition and prospects.

Changes in taxes and other assessments may adversely affect us

The tax and other assessment regimes to which our customers and we are subject are regularly reformed, or subject to proposed reforms. Such reforms include changes in
the rate of assessments and, occasionally, enactment of temporary taxes, the proceeds of which may be earmarked for designated governmental purposes. The effects of these changes and any other changes that result from enactment of additional tax
reforms have not been, and cannot be, quantified and there can be no assurance that these reforms will not, once implemented, have an adverse effect upon our business. Furthermore, such changes may produce uncertainty in the financial system,
increasing the cost of borrowing and contributing to the increase in our non-performing credit portfolio.

The following paragraphs discuss five major reforms (the
Bank Levy, Restriction of Tax Deductions for Compensation Payments, Corporation Tax Surcharge, FATCA and possible future changes in the taxation of banking groups in the EU) which could have a material adverse effect on our operating results,
financial condition and prospects, and the competitive position of UK banking groups, including us.

Bank Levy

HM Treasury introduced an annual UK bank levy (the Bank Levy) via legislation in the Finance Act 2011. The Bank Levy is imposed on (among other entities) UK banking
groups and subsidiaries, and therefore applies to us. The amount of the Bank Levy is based on a banks total liabilities, excluding (among other things) Tier 1 capital, insured retail deposits and repos secured on sovereign debt. With effect
from 1 April 2015, the Finance Act 2015 increased the rate (for short-term liabilities) to 0.21% (a reduced rate is applied to long-term equity and liabilities). Subsequently the Finance (No.2) Act 2015 (Finance No.2 Act), which was enacted on
18 November 2015, reduced the Bank Levy rate from 0.21% to 0.18% from 1 January 2016 with subsequent annual reductions to 0.1% from 1 January 2021.

Restriction of Tax Deductions for Compensation Payments

The Finance (No.2)
Act implemented measures that have led to, for expenditure arising on or after 7 July 2015 by banking companies (including ANTS and the Company) (i) certain compensation payments (comprising redress and interest payable to customers) no
longer being deductible for corporation tax purposes; and (ii) a deemed taxable receipt equivalent to 10% of those compensation payments.

Corporation Tax
Surcharge

With effect from 1 January 2016, banks (as defined in the Corporation Tax Act 2010 and including ANTS and Santander UK plc) are subject to a
surcharge at a rate of 8% on their taxable profits for corporation tax purposes (with certain reliefs added back and subject to annual allowance).

FATCA

Sections 1471 through 1474 of the US Internal Revenue Code of 1986 (FATCA) impose a reporting regime and potentially a 30% withholding tax with respect to certain
payments to any non-US financial institution (a foreign financial institution or FFI (as defined by FATCA)) that (i) does not become a Participating FFI by entering into an agreement with the US Internal Revenue Service (the IRS) to
provide the IRS with certain information in respect of its account holders and investors; and (ii) is not otherwise exempt from or in deemed compliance with FATCA. The Company and Abbey National Treasury Services plc are classified as FFIs.





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Final regulations implementing FATCA were issued in 2013. The reporting and withholding regime will be phased in over time. Withholding began on 1 July 2014 for
certain payments from sources within the US and it will begin on 1 January 2019 for payments of gross proceeds on assets that could generate US source dividend or interest and as early as 1 January 2019 for foreign passthru
payments (a term not yet defined).

The US and the UK have entered into an agreement for the implementation of FATCA (the US-UK IGA) under which the Company
and Abbey National Treasury Services plc will be treated as Reporting Financial Institutions (as defined therein). We do not anticipate that these entities will be required to deduct any tax under FATCA from payments on the securities that we issue.
Each relevant member of the Santander UK group subject to the US-UK IGA will, however, need to comply with certain due diligence and reporting requirements to HMRC or any other relevant tax authority. Holders of securities that the Santander UK
group issues therefore may be required to provide information and tax documentation, as well as that of their direct or indirect owners, and this information may be reported to the Commissioners for HMRC or any other relevant tax authority, and
ultimately to the IRS. There can be no assurance that any such member of the Santander UK group will be treated as a Reporting Financial Institution or that in the future we would not be required to deduct tax under FATCA from payments we make on
certain financial products.

Further, additional rules similar to FATCA have been implemented in other jurisdictions and the UK has entered into information sharing
agreements based on FATCA with its Crown Dependencies and Overseas Territories. The Crown Dependency and Gibraltar agreements are reciprocal and require UK Financial Institutions to identify customers who are tax residents of the Crown Dependencies
and Gibraltar (and vice versa). The commencement date for these agreements was the same as for FATCA, i.e. 1 July 2014.

European Taxation

On 14 February 2013, the Commission published a proposal (the Commission Proposal) for a directive for a common system of financial transactions tax (FTT) in
Belgium, Germany, Estonia, Greece, Spain, France, Italy, Austria, Portugal, Slovenia and Slovakia (the Participating Member States). Under the Commissions proposal, the FTT could apply in certain circumstances to persons both within and
outside of the Participating Member States. Whilst the UK is not a Participating Member State, the Commissions proposal is broad and as such may impact transactions completed by financial institutions operating in non-Participating Member
States.

Joint statements issued in 2014 by the Participating Member States indicated an intention to implement the FTT by 1 January 2016. However, the
Commissions proposal remains subject to continued negotiation between the Participating Member States. It is reported that a final decision will be delayed to mid-2017 and we are monitoring developments and any likely impact on us.

Changes in our pension liabilities and obligations could have a materially adverse effect on us

We provide retirement benefits for many of our former and current employees in the UK through a number of defined benefit pension schemes established under trust. We are
the principal employer under these schemes, but we have only limited control over the rate at which we pay into such schemes. Under the UK statutory funding requirements employers are usually required to contribute to the schemes at the rate they
agree with the scheme trustees although, if they cannot agree, the rate can be set by the Pensions Regulator. The scheme trustees may, in the course of discussions about future valuations, seek higher employer contributions. The scheme
trustees power in relation to the payment of pension contributions depends on the terms of the trust deed and rules governing the pension schemes, however, the scheme trustees may have the unilateral right to set our relevant
contribution payment.

The Pensions Regulator has the power to issue a financial support direction to companies within a group in respect of the liability of
employers participating in the UK defined benefit pension schemes where that employer is a service company, or is otherwise insufficiently resourced (as defined for the purposes of the relevant legislation). As some of the employers
within the Santander UK group are service companies, if they become insufficiently resourced and no suitable mitigating action is undertaken, other companies within the Santander UK group which are connected with or an associate of those employers
are at risk of a financial support direction in respect of those employers liabilities to the defined benefit pension schemes in circumstances where the Pensions Regulator properly considers it reasonable to issue one. Such a financial support
direction could require the companies to guarantee or provide security for the pension liabilities of those employers, or could require additional amounts to be paid into the relevant pension schemes in respect of them.

The Pensions Regulator can also issue contribution notices if it is of the opinion that an employer has taken actions, or failed to take actions, deliberately designed
to avoid meeting its pension promises or which are materially detrimental to the schemes ability to meet its pension promises. A contribution notice can be moved to any company that is connected with or an associate of such employer in
circumstances where the Pensions Regulator considers it reasonable to issue and multiple notices could be issued to connected companies for the full amount of debt, resulting in a surplus. The risk of a contribution notice being imposed may inhibit
our freedom to restructure or to undertake certain corporate activities.

Should the value of assets to liabilities in respect of the defined benefit schemes
operated by us record a deficit, due to either a reduction in the value of the pension fund assets (depending on the performance of financial markets) and/or an increase in the pension fund liabilities due to changes in legislation, mortality
assumptions, discount rate assumptions, inflation, the expected rate of return on scheme assets, or other factors, or there is a change in the actual or perceived strength of the employers covenant, this could result in us having to make
increased contributions to reduce or satisfy the deficits which would divert resources from use in other areas of our business and reduce our capital resources. While we can control a number of the above factors, there are some over which we have no
or limited control. Although the trustees of the defined benefit pension schemes are obliged to consult with us before changing the pension schemes investment strategy, the trustees have the final say and ultimate responsibility for investment
strategy rests with them.

Our principal defined pension scheme is the Santander (UK) Group Pension Scheme and its corporate trustee is Santander (UK) Group Pension
Scheme Trustee Limited (the Pension Scheme Trustee), a wholly-owned subsidiary of the Company. At 31 December 2016, the Pension Scheme Trustee had 13 directors, comprising six Santander UK appointed directors and seven member-elected directors.
Investment decisions are delegated by the Pension Scheme Trustee to a common investment fund, managed by Santander (CF) Trustee Limited, a private limited company owned by the Santander (CF) Trustee directors, with up to four appointed by the
Company and up to three by the Pension Scheme Trustee. The Pension Scheme Trustee directors principal duty, within the investment powers delegated to them, is to act in the best interest of the members of the Santander UK group Pension Scheme
and not that of the Company. Any increase in our pension liabilities and obligations could have a material adverse effect on our operating results, financial condition and prospects.





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|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





The ongoing changes in the UK supervision and regulatory regime and particularly the implementation
of the ICBs recommendations may require us to make changes to our structure and business which could have an impact on our pension schemes or liabilities. For a discussion of the ICBs recommendations see the risk factor entitled We
are subject to substantial regulation and governmental oversight which could adversely affect our business and operations.

We rely on
recruiting, retaining and developing appropriate senior management and skilled personnel

Our continued success depends in part on the continued service of
key members of our senior executive team and other key employees. The ability to continue to attract, train, motivate and retain highly qualified and talented professionals is a key element of our strategy. The successful implementation of our
growth strategy and of a culture of Simple, Personal and Fair depends on the availability of skilled and appropriate management, both at our head office and in each of our business units. If we or one of our business units or other functions fails
to staff its operations appropriately, or loses one or more of its key senior executives or other key employees and fails to replace them in a satisfactory and timely manner, our business, financial condition and results of operations, including
control and operational risks, may be adversely affected.

In addition, the financial services industry has and may continue to experience more stringent regulation
of employee compensation, which could have an adverse effect on our ability to hire or retain the most qualified employees, particularly hiring senior employees from outside the financial services industry. If we fail or are unable to attract and
appropriately train, motivate and retain qualified professionals, our business may also be adversely affected.

Damage to our reputation could
cause harm to our business prospects

Protecting and enhancing our reputation is critical. Without a positive reputation, we will struggle to attract and
retain customers, investors and employees and conducting business transactions with counterparties. Damage to the reputation of the Santander UK group or Banco Santander SA (as the majority shareholder in the Company), the reputation of affiliates
operating under the Santander brand or any of our other brands could therefore cause significant harm to our business and prospects. Harm to our reputation can arise directly or indirectly from numerous sources, including, among others,
employee misconduct (including the possibility of employee fraud), litigation, failure to deliver minimum standards of service and quality, compliance failures, breach of legal or regulatory requirements, unethical behaviour (including adopting
inappropriate sales and trading practices), and the activities of customers and counterparties. Further, negative publicity regarding us may result in harm to our operating results, financial condition and prospects.

Actions by the financial services industry generally or by certain members of, or individuals in, the industry can also affect our reputation. For example, the role
played by financial services firms in the financial crisis has caused public perception of us and others in the financial services industry to decline.

We could
suffer significant reputational harm if we fail to identify and manage potential conflicts of interest properly. The failure, or perceived failure, to adequately address conflicts of interest could affect the willingness of customers to deal with
us, or give rise to litigation or enforcement actions against us. Therefore, there can be no assurance that conflicts of interest will not arise in the future that could cause material harm to us.

Our financial statements are based in part on assumptions and estimates which, if inaccurate, could cause material misstatement of the results of
our operations and financial condition

The preparation of financial statements requires management to make judgements, estimates and assumptions that affect
the reported amounts of assets, liabilities, provisions, income and expenses. Due to the inherent uncertainty in making estimates, actual results reported in future periods may differ from those estimates. Estimates, judgements and assumptions are
continually evaluated and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances. Revisions to accounting estimates are recognised in the period in
which the estimate is revised and in any future periods affected. The accounting policies deemed critical to our results and financial condition, based upon materiality and significant judgements and estimates, include impairment of loans and
advances, valuation of financial instruments, provision for conduct remediation and pensions.

The valuation of financial instruments measured at fair value can be
subjective, in particular where models are used which include unobservable inputs. Given the uncertainty and subjectivity associated with valuing such instruments it is possible that the results of our operations and financial condition could be
materially misstated if the estimates and assumptions used prove to be inaccurate.

If the judgement, estimates and assumptions we use in preparing our consolidated
financial statements are subsequently found to be incorrect, there could be a material effect on our results of operations and a corresponding effect on our funding requirements and capital ratios.

Disclosure controls and procedures over financial reporting may not prevent or detect all errors or acts of fraud

Disclosure controls and procedures over financial reporting are designed to provide reasonable assurance that information required to be disclosed by us within our
financial statements or under other accounting, regulatory, supervisory or listing authority requirements, including in reports filed or submitted under the US Securities Exchange Act of 1934, as amended (the Exchange Act), is accumulated and
communicated to management, and recorded, processed, summarised and reported within the time periods specified in the US Securities and Exchange Commissions rules and forms and other applicable accounting, regulatory, supervisory or listing
authority requirements. We adopted the Committee of Sponsoring Organisations of the Treadway Commission internal control  integrated framework with effect from 15 December 2014, replacing the previous framework. The revised framework is
designed to recognise the many changes in business and operating environments since the issuance of the original framework and is intended to broaden and enhance the application of controls over financial reporting.

However, there are inherent limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the
circumvention or overriding of the controls and procedures. Accordingly, even effective disclosure controls and procedures can only provide reasonable assurance of achieving their control objectives.





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Other
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Consequently, our business is exposed to risk from potential non-compliance with policies, employee misconduct or negligence and fraud, which could result in regulatory
sanctions, civil claims and serious reputational or financial harm. In recent years, a number of multinational financial institutions have suffered material losses due to the actions of rogue traders or other employees. It is not always
possible to deter employee misconduct and the precautions we take to prevent and detect this activity may not always be effective. As a result of the inherent limitations in the control system, misstatements due to error or fraud may occur and not
be detected.

Changes in accounting standards could impact reported earnings

The accounting standard setters and other regulatory bodies periodically change the financial accounting and reporting standards that govern the preparation of our
consolidated financial statements. These changes can materially impact how we record and report our financial condition and results of operations. In some cases, we could be required to apply a new or revised standard retroactively, resulting in the
restatement of prior period financial statements. For further information about developments in financial accounting and reporting standards, see Note 1 to the Consolidated Financial Statements.

We rely on third parties and affiliates for important infrastructure support, products and services

Third party providers and certain affiliates provide key components of our business infrastructure such as loan and deposit servicing systems, back office and business
process support, information technology production and support, internet connections and network access. Relying on these third party providers and affiliates is a source of operational and regulatory risk to us, including with respect to security
breaches affecting such parties. We are also subject to risk with respect to security breaches affecting our third party providers and affiliates, and other parties that interact with these parties. As our interconnectivity with these third parties
and affiliates increases, we increasingly face the risk of operational failure with respect to their systems. We may be required to take steps to protect the integrity of our operational systems, thereby increasing our operational costs and
potentially decreasing customer satisfaction. In addition, any problems caused by these third parties or affiliates, including as a result of them not providing us their services for any reason, or performing their services poorly, could adversely
affect our ability to deliver products and services to customers and otherwise conduct our business, which could lead to reputational damage and regulatory investigations and intervention. Replacing these third party vendors or affiliates could also
entail significant delays and expense. Further, the operational and regulatory risk we face as a result of these arrangements may be increased to the extent that we restructure such arrangements. Any restructuring could involve significant expense
to us and entail significant delivery and execution risk which could have a material adverse effect on our business, operations and financial condition.

We are part of a group and we may engage in transactions with our subsidiaries or affiliates

We and our subsidiaries and affiliates have
entered into a number of services agreements pursuant to which we render services, such as administrative, accounting, finance, treasury, legal and other services. Also, we rely upon certain outsourced services (including information technology
support, maintenance and consultancy services) provided by certain other members of the Banco Santander group (for more information, see the risk factor entitled We rely on third parties and affiliates for important infrastructure support,
products and services). The foregoing arrangements may be considered by some not to be on an arms-length basis. English law applicable to public companies and financial groups and institutions, as well as our articles of association,
provide for several procedures designed to ensure that the transactions entered into, with or among our financial subsidiaries, do not deviate from prevailing market conditions for those types of transactions, including the requirement that our
board of directors approve such transactions. We are likely to continue to engage in transactions with our subsidiaries or affiliates (including our controlling shareholder). Future conflicts of interests between us and any of our subsidiaries or
affiliates, or among our subsidiaries and affiliates, may arise, which conflicts are not required to be and may not be resolved in our favour.

Further, as a
subsidiary of Banco Santander SA, we may need to rely on our parent for support in our business, operations or capital position. If Banco Santander SA is not able to provide support at the required time, this could have a material adverse effect on
our financial condition and prospects. In addition, we are subject to the oversight of Banco Santander SA and the strategy of the Banco Santander group as a whole and any material change in the strategy of the Banco Santander group may have a
material adverse effect on our business and prospects.

Different disclosure and accounting principles between the UK and the US may provide
different or less information about us than you expected

There may be less publicly available information about us than is regularly published about
companies in the US. Issuers of securities in the UK are required to make public disclosures that are different from, and that may be reported under presentations that are not consistent with, disclosures required in countries with a relatively more
developed capital market, including the US. While we are subject to the periodic reporting requirements of the Exchange Act, we are not subject to the same disclosure requirements in the US as a domestic US registrant under the Exchange Act,
including the requirements to prepare and issue quarterly reports, or the proxy rules applicable to domestic US registrants under Section 14 of the Exchange Act or the insider reporting and short-swing profit rules under Section 16 of the
Exchange Act. Accordingly, the information about us available will not be the same as the information available to holders of securities of a US company and may be reported in a manner that is not familiar.

Risks concerning enforcement of judgments made in the US

The Company is a public limited company registered in England and Wales. All of the Companys directors live outside the US. As a result, it may not be possible to
serve process on such persons in the US or to enforce judgments obtained in US courts against them or us based on the civil liability provisions of the US federal securities laws or other laws of the US or any state thereof.





298Santander UK plc



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|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





Risk elements in the loan portfolio

The disclosure of credit risk elements in this section reflects US accounting practice and classifications. The purpose of the disclosure is to present within the US
disclosure framework the elements of our loan portfolios with a greater risk of loss. The main classifications of credit risk elements presented are:



| | - | Impaired loans
| | - | --------------

| | - | Unimpaired loans contractually past due 90 days or more as to interest or principal
| | - | -----------------------------------------------------------------------------------

| | - | Forbearance
| | - | -----------

| | - | Troubled debt restructurings
| | - | ----------------------------

| | - | Potential problem loans and advances
| | - | ------------------------------------

| | - | Cross border outstandings.
| | - | --------------------------

Impaired loans

Loans are classified as impaired when there is objective evidence that not all contractual cash flows will be received. Under IFRS, separate disclosure is required of
loans that are neither past due nor impaired, past due but not impaired, and impaired. This disclosure may be found in the Credit risk  Santander UK group level  credit risk review section of the Risk review.

In accordance with IFRS, Santander UK recognises interest income on assets after they have been written down as a result of an impairment loss. Interest continues to be
accrued on all loans and the element of interest that is not anticipated to be recovered is provided for. Interest income recognised on impaired loans is set out in the Consolidated Financial Statements. The income adjustment in respect of interest
that is not anticipated to be recovered was £11m (2015: £15m, 2014: £23m).

Unimpaired loans contractually past due 90 days
or more as to interest or principal

We classify loans as NPLs where customers dont make a payment for three months or more, or if we have data to make
us doubt they can keep up with their payments. We describe this in more detail in the Credit risk  Santander UK group level  credit risk management section of the Risk review. Details of our non-performing loans and advances
are set out below and in the Credit risk  Santander UK group level  credit risk review section of the Risk review.



|                                             |  |         |         |  |         |  |         |         |  |  |         |  |  |         |         |  |  |  |         | 
|-------------------------------------------- |  | ------- | ------- |  | ------- |  | ------- | ------- |  |  | ------- |  |  | ------- | ------- |  |  |  | ------- | 
|                                             |  | 2016
£m |         |  | 2015
£m |  |         | 2014
£m |  |  | 2013
£m |  |  | 2012
£m |        
|Loans and advances to customers(1) of which: |  |         | 200,156 |  |         |  | 198,634 |         |  |  | 190,651 |  |  |         | 187,048 |  |  |  | 194,733 | 
|NPLs                                         |  |         | 2,994   |  |         |  | 3,056   |         |  |  | 3,424   |  |  |         | 3,823   |  |  |  | 4,210   | 
|Total impairment loan loss allowances        |  |         | 989     |  |         |  | 1,157   |         |  |  | 1,439   |  |  |         | 1,555   |  |  |  | 1,803   | 
|                                             |  |         | %       |  |         |  | %       |         |  |  | %       |  |  |         | %       |  |  |  | %       | 
|NPL ratio(2)                                 |  |         | 1.50    |  |         |  | 1.54    |         |  |  | 1.80    |  |  |         | 2.04    |  |  |  | 2.16    | 
|Coverage
ratio(3)                            |  |         | 33      |  |         |  | 38      |         |  |  | 42      |  |  |         | 41      |  |  |  | 43      | 

|(1) | Includes Social Housing loans and finance leases, and excludes trading assets.
|--- | ------------------------------------------------------------------------------

|(2) | NPLs as a percentage of loans and advances to customers.
|--- | --------------------------------------------------------

|(3) | Impairment loss allowances as a percentage of NPLs.
|--- | ---------------------------------------------------

Forbearance

To support customers that encounter difficulties, we operate forbearance programmes to amend contractual amounts or timings where a customers financial distress
indicates the potential that satisfactory repayment may not be made within the original terms and conditions of the contract. We employ a range of forbearance strategies in order to improve the management of customer relationships, maximise
collection opportunities within customers affordability and, if possible, avoid foreclosure or repossession. For more on this, see the Credit risk managementRetail Banking and Credit risk management  Other
segments sections of the Risk review.

Troubled debt restructurings

The US Securities and Exchange Commission requires separate disclosure of any loans whose terms have been modified by the lender because of the borrowers financial
difficulties, as a concession that the lender would not otherwise consider. These are classified as troubled debt restructurings. For disclosure of loans that would otherwise have been classified as past due or impaired whose terms have been
renegotiated and disclosure on forbearance, see the Credit risk section of the Risk review.

Potential problem loans and advances

Credit risk elements also cover potential problem loans. These are loans where information on possible credit problems among borrowers causes management to
seriously doubt their ability to comply with the loan repayment terms. There are no potential problem loans other than those discussed above, and as discussed in the Credit risk section of the Risk review.





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Other
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Cross border outstandings

Cross border outstandings, as
defined by bank regulatory rules, are amounts payable to us by residents of foreign countries, regardless of the currency in which the claim is denominated, and local country claims in excess of local country obligations. Cross border outstandings
consist mainly of loans and advances to customers and banks, finance lease debtors, interest-bearing investments and other monetary assets.

In addition to credit
risk, cross border outstandings have the risk that, as a result of political or economic conditions in a country, borrowers may be unable to meet their contractual payment obligations of principal and or interest when due because of the
unavailability of, or restrictions on, foreign exchange needed by borrowers to repay their obligations. These cross border outstandings are controlled through a well-developed system of country limits, which are reviewed to avoid concentrations of
transfer, economic or political risks.

For further analysis of our country risk exposures, including eurozone and peripheral eurozone exposures and redenomination
risk, see the Country risk exposure section of the Risk review.

(i) Cross border outstandings exceeding 1% of total assets

At 31 December 2016, 2015 and 2014 cross border outstandings exceeding 1% of total assets were as follows:



|       |  |                                           |     |  |                                            |  |      |           |  |  |           |  |  |  |      | 
|------ |  | ----------------------------------------- | --- |  | ------------------------------------------ |  | ---- | --------- |  |  | --------- |  |  |  | ---- | 
|2016   |  | Governments and
official institutions £bn |     |  | Banks and other
financial institutions
£bn |  |      | Other £bn |  |  | Total £bn | 
|US     |  |                                           | 5.0 |  |                                            |  | 13.1 |           |  |  | 0.1       |  |  |  | 18.2 | 
|Japan  |  |                                           | 2.8 |  |                                            |  | 3.3  |           |  |  | 1.4       |  |  |  | 7.5  | 
|       |  |                                           |     | 
|2015   |  |                                           |     |  |                                            |  |      |           |  |  |           | 
|US     |  |                                           | 2.7 |  |                                            |  | 12.2 |           |  |  | 0.1       |  |  |  | 15.0 | 
|Japan  |  |                                           | 2.7 |  |                                            |  | 1.1  |           |  |  | 1.7       |  |  |  | 5.5  | 
|France |  |                                           | 0.4 |  |                                            |  | 2.2  |           |  |  | 1.6       |  |  |  | 4.2  | 
|       |  |                                           |     | 
|2014   |  |                                           |     |  |                                            |  |      |           |  |  |           | 
|US     |  |                                           | 4.9 |  |                                            |  | 11.1 |           |  |  | 0.2       |  |  |  | 16.2 | 
|Japan  |  |                                           | 3.8 |  |                                            |  | 0.2  |           |  |  | 1.1       |  |  |  | 5.1  | 

(ii) Cross border outstandings between 0.75% and 1% of total assets

At 31 December 2016, 2015 and 2014, cross border outstandings between 0.75% and 1% of total assets were as follows:



|           |  |                                           |     |  |                                            |  |     |           |  |  |           |  |  |  |     | 
|---------- |  | ----------------------------------------- | --- |  | ------------------------------------------ |  | --- | --------- |  |  | --------- |  |  |  | --- | 
|2016       |  | Governments and
official institutions £bn |     |  | Banks and other
financial institutions
£bn |  |     | Other £bn |  |  | Total £bn | 
|Spain      |  |                                           | -   |  |                                            |  | 2.5 |           |  |  | 0.2       |  |  |  | 2.7 | 
|Luxembourg |  |                                           | -   |  |                                            |  | 2.3 |           |  |  | 0.3       |  |  |  | 2.6 | 
|Germany    |  |                                           | -   |  |                                            |  | 2.5 |           |  |  | -         |  |  |  | 2.5 | 
|France     |  |                                           | 0.4 |  |                                            |  | 2.0 |           |  |  | 0.1       |  |  |  | 2.5 | 
|           |  |                                           |     | 
|2015       |  |                                           |     |  |                                            |  |     |           |  |  |           | 
|Germany    |  |                                           | 0.1 |  |                                            |  | 2.2 |           |  |  | 0.5       |  |  |  | 2.8 | 
|           |  |                                           |     | 
|2014       |  |                                           |     |  |                                            |  |     |           |  |  |           | 
|France     |  |                                           | 0.4 |  |                                            |  | 2.2 |           |  |  | 0.1       |  |  |  | 2.7 | 
|Spain      |  |                                           | -   |  |                                            |  | 2.5 |           |  |  | 0.1       |  |  |  | 2.6 | 
|Germany    |  |                                           | 0.2 |  |                                            |  | 1.9 |           |  |  | 0.3       |  |  |  | 2.4 | 

(iii) Cross border outstandings between 0.5% and 0.75% of total assets

At 31 December 2016, 2015 and 2014, cross border outstandings between 0.5% and 0.75% of total assets were as follows:

2016

None.



|            |  |                                           |     |  |                                            |  |     |           |  |  |           |  |  |  |     | 
|----------- |  | ----------------------------------------- | --- |  | ------------------------------------------ |  | --- | --------- |  |  | --------- |  |  |  | --- | 
|2015        |  | Governments and
official institutions £bn |     |  | Banks and other
financial institutions
£bn |  |     | Other £bn |  |  | Total £bn | 
|Spain       |  |                                           | -   |  |                                            |  | 1.7 |           |  |  | 0.2       |  |  |  | 1.9 | 
|            |  |                                           |     | 
|2014        |  |                                           |     |  |                                            |  |     |           |  |  |           | 
|Switzerland |  |                                           | 0.7 |  |                                            |  | 0.5 |           |  |  | 0.3       |  |  |  | 1.5 | 





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|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





The geographical analysis below is based on the location of the office from which the loans and
advances to customers are made, rather than the domicile of the borrower. For geographical analysis by the domicile of the borrower rather than the office of lending, see the Country risk exposure section in the Risk review.

Impairment loss allowances on loans and advances to customers

An analysis of impairment loss allowances on loans and advances to customers is presented below.



|                                                               |  |         |     |  |         |  |       |         |  |  |         |  |  |         |       |  |  |  |       | 
|-------------------------------------------------------------- |  | ------- | --- |  | ------- |  | ----- | ------- |  |  | ------- |  |  | ------- | ----- |  |  |  | ----- | 
|                                                               |  | 2016
£m |     |  | 2015
£m |  |       | 2014
£m |  |  | 2013
£m |  |  | 2012
£m |      
|Observed impairment loss allowances:                           |  |         |     |  |         |  |       |         |  |  |         |  |  |         |       |  |  |  |       | 
|Advances secured on residential properties - UK                |  |         | 130 |  |         |  | 159   |         |  |  | 248     |  |  |         | 303   |  |  |  | 299   | 
|Corporate loans - UK                                           |  |         | 287 |  |         |  | 282   |         |  |  | 412     |  |  |         | 482   |  |  |  | 734   | 
|Finance leases - UK                                            |  |         | 13  |  |         |  | 12    |         |  |  | 7       |  |  |         | 8     |  |  |  | 6     | 
|Unsecured personal advances - UK                               |  |         | 73  |  |         |  | 78    |         |  |  | 85      |  |  |         | 80    |  |  |  | 146   | 
|Total observed impairment loss allowances                      |  |         | 503 |  |         |  | 531   |         |  |  | 752     |  |  |         | 873   |  |  |  | 1,185 | 
|Incurred but not yet observed impairment loss allowances:      |  |         |     |  |         |  |       |         |  |  |         |  |  |         |       |  |  |  |       | 
|Advances secured on residential properties - UK                |  |         | 149 |  |         |  | 265   |         |  |  | 331     |  |  |         | 290   |  |  |  | 253   | 
|Corporate loans - UK                                           |  |         | 95  |  |         |  | 113   |         |  |  | 146     |  |  |         | 151   |  |  |  | 162   | 
|Finance leases - UK                                            |  |         | 100 |  |         |  | 57    |         |  |  | 47      |  |  |         | 36    |  |  |  | 34    | 
|Unsecured personal advances - UK                               |  |         | 142 |  |         |  | 191   |         |  |  | 163     |  |  |         | 205   |  |  |  | 168   | 
|Total incurred but not yet observed impairment loss
allowances |  |         | 486 |  |         |  | 626   |         |  |  | 687     |  |  |         | 682   |  |  |  | 617   | 
|Total impairment loss allowances                               |  |         | 989 |  |         |  | 1,157 |         |  |  | 1,439   |  |  |         | 1,555 |  |  |  | 1,802 | 

Movements in impairment loss allowances on loans and advances to customers

An analysis of movements in impairment loss allowances on loans and advances to customers is presented below.



|                                                                                       |  |         |       |  |         |  |       |         |  |  |         |  |  |         |       |  |  |  |       | 
|-------------------------------------------------------------------------------------- |  | ------- | ----- |  | ------- |  | ----- | ------- |  |  | ------- |  |  | ------- | ----- |  |  |  | ----- | 
|                                                                                       |  | 2016
£m |       |  | 2015
£m |  |       | 2014
£m |  |  | 2013
£m |  |  | 2012
£m |      
|Impairment loss allowances at 1 January                                                |  |         | 1,157 |  |         |  | 1,439 |         |  |  | 1,555   |  |  |         | 1,802 |  |  |  | 1,429 | 
|Amounts written off:                                                                   |  |         |       |  |         |  |       |         |  |  |         |  |  |         |       |  |  |  |       | 
|Advances secured on residential properties - UK                                        |  |         | (29)  |  |         |  | (32)  |         |  |  | (56)    |  |  |         | (89)  |  |  |  | (75)  | 
|Corporate loans - UK                                                                   |  |         | (72)  |  |         |  | (157) |         |  |  | (150)   |  |  |         | (382) |  |  |  | (215) | 
|Finance leases - UK                                                                    |  |         | (3)   |  |         |  | (5)   |         |  |  | (7)     |  |  |         | (10)  |  |  |  | (13)  | 
|Unsecured personal advances - UK                                                       |  |         | (196) |  |         |  | (244) |         |  |  | (272)   |  |  |         | (342) |  |  |  | (377) | 
|Total amounts written off                                                              |  |         | (300) |  |         |  | (438) |         |  |  | (485)   |  |  |         | (823) |  |  |  | (680) | 
|Observed impairment losses charged against profit:                                     |  |         |       |  |         |  |       |         |  |  |         |  |  |         |       |  |  |  |       | 
|Advances secured on residential properties - UK                                        |  |         | -     |  |         |  | (57)  |         |  |  | 1       |  |  |         | 93    |  |  |  | 55    | 
|Corporate loans - UK                                                                   |  |         | 77    |  |         |  | 24    |         |  |  | 80      |  |  |         | 130   |  |  |  | 542   | 
|Finance leases - UK                                                                    |  |         | 12    |  |         |  | 12    |         |  |  | 6       |  |  |         | 12    |  |  |  | 12    | 
|Unsecured personal advances - UK                                                       |  |         | 174   |  |         |  | 248   |         |  |  | 277     |  |  |         | 316   |  |  |  | 338   | 
|Total observed impairment losses charged against
profit                                |  |         | 263   |  |         |  | 227   |         |  |  | 364     |  |  |         | 551   |  |  |  | 947   | 
|Incurred but not yet observed impairment losses charged
against/(released into) profit |  |         | (131) |  |         |  | (71)  |         |  |  | 5       |  |  |         | 25    |  |  |  | 106   | 
|Total impairment losses charged against profit                                         |  |         | 132   |  |         |  | 156   |         |  |  | 369     |  |  |         | 576   |  |  |  | 1,053 | 
|Impairment loss allowances at 31 December                                              |  |         | 989   |  |         |  | 1,157 |         |  |  | 1,439   |  |  |         | 1,555 |  |  |  | 1,802 | 
|                                                                                       |  |         |       |  |        
|                                                                                       |  | %       |       |  | %       |  |       | %       |  |  | %       |  |  | %       |      
|Ratio of amounts written off to average loans during the
year                          |  |         | 0.15  |  |         |  | 0.22  |         |  |  | 0.26    |  |  |         | 0.43  |  |  |  | 0.34  | 

Recoveries, net of collection costs

An analysis of recoveries, net of collection costs is presented below.



|                                                |  |         |    |  |         |  |    |         |  |  |         |  |  |         |     |  |  |  |    | 
|----------------------------------------------- |  | ------- | -- |  | ------- |  | -- | ------- |  |  | ------- |  |  | ------- | --- |  |  |  | -- | 
|                                                |  | 2016
£m |    |  | 2015
£m |  |    | 2014
£m |  |  | 2013
£m |  |  | 2012
£m |    
|Advances secured on residential properties - UK |  |         | 4  |  |         |  | 2  |         |  |  | 3       |  |  |         | 4   |  |  |  | 4  | 
|Corporate loans - UK                            |  |         | 3  |  |         |  | 3  |         |  |  | 4       |  |  |         | 8   |  |  |  | 6  | 
|Finance leases - UK                             |  |         | 2  |  |         |  | 2  |         |  |  | 2       |  |  |         | 2   |  |  |  | 2  | 
|Unsecured personal advances - UK                |  |         | 56 |  |         |  | 83 |         |  |  | 102     |  |  |         | 87  |  |  |  | 53 | 
|Total amount recovered                          |  |         | 65 |  |         |  | 90 |         |  |  | 111     |  |  |         | 101 |  |  |  | 65 | 





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Annual Report 2016

Other
information for US investors









Taxation for US investors

The following is a
summary, under current law, of the main UK tax considerations relating to the beneficial ownership by a US taxpayer of the shares of the Company. This summary is provided for general guidance and does not address investors that are subject to
special rules or that do not hold the shares as capital assets. US residents should consult their local tax advisers, particularly in connection with any potential liability to pay US taxes on disposal, lifetime gift or bequest of their shares.

UK taxation on dividends

Under UK law, income tax is
not withheld from dividends paid by UK companies. Shareholders, whether resident in the UK or not, receive the full amount of the dividend actually declared.

UK taxation on capital gains

Under UK law, when you sell shares you may be liable to pay either capital gains tax or corporation tax on
chargeable gains. However if you are either:

| | - | An individual who is neither resident nor ordinarily resident in the UK or
| | - | --------------------------------------------------------------------------

| | - | A company which is not resident in the UK,
| | - | ------------------------------------------

you will not be liable to UK tax on any capital gains made on disposal of
your shares. The exception is if the shares are held in connection with a trade or business that is conducted in the UK through a branch or agency (for capital gains tax purposes) or a permanent establishment (for corporation tax purposes).

UK inheritance tax

Under the current estate and gift
tax convention between the US and the UK, shares held by an individual shareholder who is:

| | - | Domiciled for the purposes of the convention in the US and
| | - | ----------------------------------------------------------

| | - | Is not for the purposes of the convention a national of the UK
| | - | --------------------------------------------------------------

will not be subject to UK inheritance tax on:

| | - | The individuals death or
| | - | -------------------------

| | - | On a gift of the shares during the individuals lifetime.
| | - | ---------------------------------------------------------

The exception is if the shares are part of the business
property of a permanent establishment of the individual in the UK or, in the case of a shareholder who performs independent personal services, pertain to a fixed base situated in the UK.





302Santander UK plc



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|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





Articles of Association

The following is a summary of the Articles of Association (the Articles) of the Company.

Santander UK plc is a public limited company incorporated and registered in England and Wales under the Companies Act 2006, with registered number 2294747. The Articles
do not specifically state or limit the objects of the Company which are therefore unrestricted.

A Director shall not vote on, or be counted in the quorum in
relation to any resolution of the Directors in respect of any contract in which he has an interest, or any resolution of the Directors concerning his own appointment, or the settlement or variation of the terms or the termination of his or her
appointment.

Preference shares entitle the holder to receive a preferential dividend payment at a fixed or variable rate, such dividend to be payable on a date
determined by the Board prior to the allotment of the shares. The Board will also determine whether these dividend rights are cumulative or non-cumulative. The holders of any series of preference shares will only be entitled to receive notice of and
to attend any general meeting of the Company if the preference dividend on the preference shares of such series has not, at the date of the notice of the general meeting, been paid in full in respect of such dividend periods as the Board may prior
to allotment determine, in which case the holders of the preference shares will be entitled to speak and/or vote upon any resolution proposed; or, if a resolution is proposed at the general meeting, for, or in relation to, the winding up of the
Company; or varying, altering or abrogating any of the rights, privileges, limitations or restrictions attached to the preference shares of such series, in which case the holders of the preference shares of such series will be entitled to speak
and/or vote only upon such resolution; or in such other circumstances, and upon and subject to such terms, as the Board may determine prior to allotment. Unless the Board determines, prior to allotment, that the series of preference shares shall be
non-redeemable, each series shall be redeemable at the option of the Company on any date as the Board may determine prior to the date of allotment. On redemption the Company shall pay the amount due. The formula for calculation of any relevant
redemption premium is set out in the Articles of Association.

On a distribution of assets on winding up of the Company or return of capital (other than on a
redemption or purchase by the Company of any of its share capital), members holding preference shares shall in respect thereof be entitled to receive, out of the surplus assets remaining after payment of the Companys liabilities, an amount
equal to the amount paid up or credited as paid up on the preference shares together with such premium (if any) as may be determined by the Board prior to allotment thereof (and so that the Board may determine that such premium is payable only in
specified circumstances).

Dividends are payable to the holders of ordinary shares. These ordinary shares are transferable. If dividends are unclaimed for twelve
years, the right to the dividend ceases.

Subject to any special terms as to voting upon which any ordinary shares may be issued or may for the time being be held or
any suspension or any abrogation of voting rights as set out in the Articles of Association, on a show of hands every member who is present in person at a general meeting of the Company shall have one vote and every proxy present who has been duly
appointed by a member shall have one vote. On a poll every member who is present in person or by proxy shall have one vote for every share of which he is the holder.

Subject to the prior rights of holders of preference shares, the Company pays dividends on its ordinary shares only out of its distributable profits and not out of share
capital. Dividends are determined by the Board.

The Companys Articles of Association authorise it to issue redeemable shares, but the Companys ordinary
shares are not redeemable. There are no sinking fund provisions. Where the shares are partly paid, the Board may make further calls upon the holders in respect of any sum whether in respect of nominal value or premium that is unpaid on their shares.
There are no provisions discriminating against any existing or prospective shareholder as a result of such shareholder owning a substantial number of shares of any class. Subject to the provisions of the UK Companies Act 2006, all or any of the
rights attached to any class of shares (whether or not the Company is being wound up) may be varied with the consent in writing of the holders of not less than three-fourths in nominal value of the issued shares of that class or with the sanction of
a special resolution passed at a separate general meeting of the holders of those shares. Additional quorum and voting requirements apply to such meeting.

General
meetings shall be called by at least 14 clear days notice (that is, excluding the day of the general meeting and the day on which the notice is given). A general meeting may be called by shorter notice if it is so agreed, in the case of an
annual general meeting, by all the shareholders having a right to attend and vote, or in other cases, by a majority in number of the shareholders having a right to attend and vote, being a majority together holding not less than 95% in nominal value
of the shares giving the right. The notice shall specify the date, time and place of the meeting and the general nature of the business to be transacted.

There are
no restrictions on the rights to own securities for either resident or non-resident shareholders, other than those to which they may be subject as a result of laws and regulations in their home jurisdiction.





Santander UK plc303



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Annual Report 2016

Other
information for US investors









Disclosure pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act

Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012, which added Section 13(r) to the Securities Exchange Act of 1934, as
amended (the Exchange Act), an issuer is required to disclose in its annual or quarterly reports, as applicable, whether it or any of its affiliates knowingly engaged in certain activities, transactions or dealings relating to Iran or with
individuals or entities designated pursuant to certain Executive Orders. Disclosure is generally required even where the activities, transactions or dealings were conducted in compliance with applicable law.

The following activities are disclosed in response to Section 13(r) with respect to the Company and its affiliates within the Banco Santander group. During the
period covered by this report:



|(a) | Santander UK holds two savings accounts and one current account for two customers resident in the UK who are currently designated by the US under the Specially Designated Global Terrorist (SDGT) sanctions
program. Revenues and profits generated by Santander UK on these accounts in the year ended December 31, 2016 were negligible.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(b) | Santander UK held a savings account for a customer resident in the UK who is currently designated by the US under the SDGT sanctions program. The savings account was closed on July 26, 2016. Revenue generated by
Santander UK on this account in the year ended December 31, 2016 was negligible.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(c) | Santander UK held a current account for a customer resident in the UK who is currently designated by the US under the SDGT sanctions program. The current account was closed on December 22, 2016. Revenue generated
by Santander UK on this account in the year ended December 31, 2016 was negligible.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(d) | Santander UK holds two frozen current accounts for two UK nationals who are designated by the US under the SDGT sanctions program. The accounts held by each customer have been frozen since their designation and have
remained frozen through the year ended December 31, 2016. The accounts are in arrears (£1,844.73 in debit combined) and are currently being managed by Santander UK Collections & Recoveries department. Revenues and profits
generated by Santander UK on these accounts in the year ended December 31, 2016 were negligible.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(e) | During the year ended December 31, 2016, Santander UK had an OFAC match on a power of attorney account. The power of attorney listed on the account is currently designated by the US under the SDGT &
Iranian Financial Sanctions Regulations (IFSR) sanctions program. The power of attorney was removed from the account on July 29, 2016. During the year ended December 31, 2016, revenues and profits generated by Santander UK were negligible.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(f) | An Iranian national, resident in the UK, who is currently designated by the US under the IFSR and the Non-Proliferation of Weapons of Mass Destruction (NPWMD) designation, held a mortgage with Santander UK that was
issued prior to such designation. The mortgage account was redeemed and closed on April 13, 2016. No further drawdown has been made (or would be allowed) under this mortgage although we continued to receive repayment instalments prior to
redemption. Revenue generated by Santander UK on this account in the year ended December 31, 2016 was negligible. The same Iranian national also held two investment accounts with Santander ISA Managers Limited. The funds within both accounts
were invested in the same portfolio fund. The accounts remained frozen until the investments were closed on May 12, 2016 and cheques issued to the customer on May 13, 2016. Revenue generated by Santander UK on these accounts in the year
ended December 31, 2016 was negligible relative to the overall revenues of Banco Santander SA.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(g) | In addition, during the year ended December 31, 2016, Santander UK held a basic current account for an Iranian national, resident in the UK, previously designated under the OFAC Iran designation. The account was
closed in September 2016. Revenue generated by Santander UK on this account in the year ended December 31, 2016 was negligible.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In addition, the Banco Santander group has an outstanding legacy export credit facility with Bank Mellat. In 2005, Banco Santander SA participated in a
syndicated credit facility for Bank Mellat of 15.5m, which matured on July 6, 2015. As of December 31, 2016, the Banco Santander group was owed
0.1m not paid at maturity under this credit facility, corresponding to the 5% that was not covered by official export credit agencies.

Banco Santander SA has not been receiving payments from Bank Mellat under this or other credit facilities in recent years. Banco Santander SA has been and expects
to continue to be repaid any amounts due by official export credit agencies. No funds have been extended by Banco Santander SA under this facility since it was granted.

In addition, the Banco Santander group also has certain legacy performance guarantees for the benefit of Bank Sepah and Bank Mellat (stand-by letters of credit to
guarantee the obligations  either under tender documents or under contracting agreements  of contractors who participated in public bids in Iran) that were in place prior to April 27, 2007.

In the aggregate, all of the transactions described above resulted in gross revenues and net profits in the year ended December 31, 2016 that were negligible
relative to the overall revenues and profits of Banco Santander SA. The Banco Santander group has undertaken significant steps to withdraw from the Iranian market such as closing its representative office in Iran and ceasing all banking activities
therein, including correspondent relationships, deposit taking from Iranian entities and issuing export letters of credit, except for the legacy transactions described above. The Banco Santander group is not contractually permitted to cancel these
arrangements without either (i) paying the guaranteed amount (in the case of the performance guarantees), or (ii) forfeiting the outstanding amounts due to it (in the case of the export credits). As such, the Banco Santander group intends
to continue to provide the guarantees and hold these assets in accordance with company policy and applicable laws.





304Santander UK plc



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|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





New York Stock Exchange (NYSE) Corporate Governance 
differences in UK and NYSE corporate governance practice

The Company issues notes in the US from time to time pursuant to a shelf registration statement filed
with the SEC. As these notes are listed on the NYSE, the Company is required to comply with NYSE corporate governance standards. Under the NYSE corporate governance standards, the Company must disclose any significant ways in which its corporate
governance practices differ from those followed by US companies under the NYSE corporate governance standards. We believe the following to be the significant differences between our current corporate governance practices and those applicable to US
companies under the NYSE corporate governance standards.

Under the NYSE corporate governance standards, independent directors must comprise a majority of the Board.
As at 31 December 2016, our Board was comprised of a Chair (who is also a Non-Executive Director), one Executive Director (the CEO) and eleven other Non-Executive Directors. The Chair, Shriti Vadera, and six of the other Non-Executive
Directors, Alain Dromer, Annemarie Durbin, Ed Giera, Chris Jones, Genevieve Shore and Scott Wheway, were independent as defined in the NYSE corporate governance standards. The other five Non-Executive Directors were not independent according to NYSE
corporate governance standards as they are representatives of the ultimate parent company, Banco Santander SA.

The NYSE corporate governance standards require that
listed US companies have a nominating or corporate governance committee composed entirely of independent directors and with a written charter addressing certain corporate governance matters. Applicable UK rules do not require companies without
equity shares listed on the London Stock Exchange, such as the Company, to have a nominating committee. However, the Company has a Board Nomination Committee, which leads the process for Board appointments. This Committee has written Terms of
Reference setting out its role to identify and nominate candidates for Board and Board Committee appointments. As at 31 December 2016, the following Directors made up the Board Nomination Committee: Shriti Vadera (Chair), Ana Botín,
Bruce Carnegie-Brown, Chris Jones, Ed Giera and Scott Wheway. Of these Directors, Shriti Vadera, Chris Jones, Ed Giera and Scott Wheway were independent according to NYSE corporate governance standards as at 31 December 2016.

In addition, the Board is responsible for monitoring the effectiveness of the Companys governance practices and making changes as needed to ensure the alignment of
the Companys governance system with current best practices. The Board monitors and manages potential conflicts of interest of management, Board members, shareholders, external advisors and other service providers, including misuse of corporate
assets and abuse in related party transactions.

The NYSE corporate governance standards require that listed US companies have a compensation committee composed
entirely of independent directors and with a written charter addressing certain corporate governance matters. The Board Remuneration Committee was not composed entirely of independent directors in 2016 according to NYSE corporate governance
standards. Under its written Terms of Reference, this Committee is primarily responsible for overseeing and supervising Santander UKs policies and frameworks covering remuneration and reward. As at 31 December 2016, the Board Remuneration
Committee was made up of six independent Non-Executive Directors according to NYSE corporate governance standards (Scott Wheway (Chair), Alain Dromer, Annemarie Durbin, Ed Giera, Chris Jones, and Genevieve Shore) and one Non-Executive Director who
was not independent according to such standards (Bruce Carnegie-Brown).

The NYSE corporate governance standards require that listed US companies have an audit
committee that satisfies the requirements of Rule 10A-3 under the US Securities Exchange Act of 1934, as amended (Rule 10A-3), with a written charter addressing certain corporate governance matters, and whose members are all independent as defined
in Rule 10A-3. As a wholly-owned subsidiary of a parent that satisfies the requirements of Rule 10A-3(c)(2), the Company is exempt from the requirements of Rule 10A-3. However, the Company does have a Board Audit Committee. As at 31 December
2016, the Board Audit Committee was made up of seven Non-Executive Directors: Chris Jones (Chair), Alain Dromer, Annemarie Durbin, Ed Giera, Genevieve Shore, Manuel Soto and Scott Wheway. All seven members were independent in 2016 as defined in Rule
10A-3.

The scope of the Board Audit Committees Terms of Reference as well as the duties and responsibilities of such committee are more limited than that
required of audit committees under the NYSE corporate governance standards. For example, the Board Audit Committee does not provide an audit committee report as required by the NYSE corporate governance standards to be included in the Companys
annual proxy statement.

The NYSE corporate governance standards require that listed US companies adopt and disclose corporate governance guidelines, including with
respect to the qualification, training and evaluation of their Directors. The NYSE corporate governance standards also require that the Board conducts a self-evaluation at least annually to determine whether it and its committees are functioning
effectively. The Board has undertaken regular reviews of Board effectiveness primarily through an internal process led by the Chair. In 2013, the first external Board effectiveness review was conducted by Bvalco Limited, an external evaluator. The
Board undertook an external review of Board effectiveness in 2016 and agreed on a plan for continuous improvement.

A CEO of a US company listed on the NYSE must
annually certify that he or she is not aware of any violation by the company of NYSE corporate government standards. In accordance with NYSE corporate governance standards applicable to foreign private issuers, our CEO is not required to provide the
NYSE with such an annual compliance certification.

In addition, as a wholly-owned subsidiary of an NYSE-listed company, the Company is exempt from two NYSE listing
standards otherwise applicable to foreign companies listed on the NYSE as well as US companies listed on the NYSE. The first requires the CEO of any NYSE-listed foreign company to notify promptly the NYSE in writing after any executive of the issuer
becomes aware of any material non-compliance with any applicable NYSE corporate governance standards. The second requires NYSE-listed foreign companies to submit executed written affirmations annually to the NYSE.





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Annual Report 2016

Other
information for US investors









Glossary of financial services industry terms



|                                                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|------------------------------------------------ |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Term                                             |  | Definition                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|1I2I3 World                                      |  | The 1I2I3 World is the marketing name for a suite of products
offering customers a range of benefits such as cashback and tiered interest, house insurance and special deals. The products include the 1I2I3 Current Account, the 1I2I3 Credit Card, and additional current accounts tailored to specific stages in a
persons life, such as the 1I2I3 Mini (for children, in Trust), Student, Graduate, and Postgraduate accounts.                                                                                                                                                                   
|1I2I3 World customer                             |  | A customer who holds one of our 1I2I3 current accounts, 1I2I3
Credit Card (including additional card holders) or the 1I2I3 Mini Account (in Trust). Trustees are not classed as 1I2I3 World customers. All customers must meet the eligibility for each product and 1I2I3 World offer.                                                                                                                                                                                                                                                                                                                
|Arrears                                          |  | Customers are said to be in arrears when they are behind in
fulfilling their obligations with the result that an outstanding loan is unpaid or overdue. Such a customer is also said to be in a state of delinquency. When a customer is in arrears, his entire outstanding balance is said to be delinquent, meaning
that delinquent balances are the total outstanding loans on which payments are overdue.                                                                                                                                                                                         
|Asset Backed Securities
(ABS)                    |  | Securities that represent an interest in an underlying pool
of referenced assets. The referenced pool can comprise any assets which attract a set of associated cash flows but are commonly pools of residential or commercial mortgages but could also include leases, credit card receivables, motor vehicles or
student loans.                                                                                                                                                                                                                                                                     
|UK Bank Levy                                     |  | The government levy that applies to certain UK banks, UK
building societies and the UK operations of foreign banks from 1 January 2011. The levy is payable based on a percentage of the chargeable equity and liabilities of the bank at the balance sheet date.                                                                                                                                                                                                                                                                                                                                     
|Basel III                                        |  | In December 2010, the Basel Committee on Banking Supervision
issued the Basel III rules text, which presents the details of strengthened global regulatory standards on bank capital adequacy and liquidity. The standards were implemented in the EU in January 2014.                                                                                                                                                                                                                                                                                                                                
|Basis point                                      |  | One hundredth of a per cent (i.e. 0.01%), so 100 basis points
is 1%. Used in quoting movements in interest rates or yields on securities.                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Business Banking                                 |  | Division serving enterprises with a turnover of up to
£250,000 per annum.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Colleague engagement                             |  | Colleague engagement is measured on annual basis in the Group
Engagement Survey (GES), conducted by Korn Ferry for Banco Santander. Results are benchmarked against other firms in the UK financial sector and other high performing firms.                                                                                                                                                                                                                                                                                                                                                           
|Collectively assessed
loan impairment provisions |  | Impairment losses assessment on a collective basis for loans that are part of homogeneous pools of similar loans and that are not
individually significant, using appropriate statistical techniques. See Impairment of financial assets in Note 1 to the Consolidated Financial Statements.                                                                                                                                                                                                                                                                                                        
|Commercial Paper                                 |  | An unsecured promissory note issued to finance short-term
credit needs. It specifies the face amount paid to investors on the maturity date. Commercial paper can be issued as an unsecured obligation of Santander UK and is usually issued for periods ranging from one week up to nine months. However, the
depth and reliability of some CP markets means that issuers can repeatedly roll over CP issuance and effectively achieve longer term funding. CP can be issued in a range of denominations and can be discounted or interest-bearing.                                                  
|Commercial Real Estate
(CRE)                     |  | Lending to UK customers, primarily on tenanted property assets, with a focus on the office, retail, industrial and residential
sectors.                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Common Equity Tier 1
(CET1) capital              |  | The called-up share capital and eligible reserves less deductions calculated in accordance with the CRD IV implementation rules as per the
PRA Policy Statement PS7/13. CET1 capital ratio is CET1 capital as a percentage of risk-weighted assets.                                                                                                                                                                                                                                                                                                                                                   
|CET1 capital ratio                               |  | CET1 capital as a percentage of risk weighted assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Contractual maturity                             |  | The final payment date of a loan or other financial
instrument, at which point all the remaining outstanding principal will be repaid and interest is due to be paid.                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Core Tier 1 capital                              |  | Called up share capital and eligible reserves plus equity
non-controlling interests, less intangible assets and deductions relating to the excess of expected loss over regulatory impairment loss allowance and securitisation positions as specified by the PRA.                                                                                                                                                                                                                                                                                                                                    
|Core Tier 1 capital ratio                        |  | Core Tier 1 capital as a percentage of risk weighted
assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Corporate customer
satisfaction                  |  | Measured by the Charterhouse UK Business Banking Survey, an
ongoing telephone based survey designed to monitor usage and attitude of UK businesses towards banks. 17,000 structured telephone interviews are conducted each year among businesses of all sizes from new start-ups to large corporates with annual
sales of £1bn.                                                                                                                                                                                                                                                                      
|Corporates                                       |  | The sum of SMEs with an annual turnover of between
£250,000 and £50m, mid corporate customers between £50m and £500m and large corporate customers above £500m.                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Cost-to-income ratio                             |  | Total operating expenses as a percentage of total income.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Coverage ratio                                   |  | Impairment loss allowances as a percentage of total
non-performing loans and advances. See non-performing loans and advances tables in the Risk review for industry specific definitions of individual products.                                                                                                                                                                                                                                                                                                                                                                                      
|Covered bonds                                    |  | Debt securities backed by a portfolio of mortgages that is
segregated from the issuers other assets solely for the benefit of the holders of the covered bonds. The Santander UK group issues covered bonds as part of its funding activities.                                                                                                                                                                                                                                                                                                                                                       
|Credit Default Swap
(CDS)                        |  | A credit derivative contract where the protection seller
receives premium or interest-related payments in return for contracting to make payments to the protection buyer in the event of a defined credit event. Credit events normally include bankruptcy, payment default on a reference asset or assets, or
downgrades by a rating agency.                                                                                                                                                                                                                                                        
|Credit spread                                    |  | The yield spread between securities with the same coupon rate
and maturity structure but with different associated credit risks, with the yield spread rising as the credit rating worsens. It is the premium over the benchmark or risk-free rate required by the market to accept a lower credit quality.                                                                                                                                                                                                                                                                                           
|Credit Valuation
Adjustment (CVA)                |  | Adjustments to the fair values of derivative assets to reflect the creditworthiness of the counterparty.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Capital Requirements
Directive IV (CRD IV)       |  | An EU legislative package covering prudential rules for
banks, building societies and investment firms.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Currency swap                                    |  | An arrangement in which two parties exchange specific
principal amounts of different currencies at inception and subsequently interest payments on the principal amounts. Often, one party will pay a fixed interest rate, while the other will pay a floating exchange rate (though there are also fixed-fixed
and floating-floating arrangements). At the maturity of the swap, the principal amounts are usually re-exchanged.                                                                                                                                                                     
|Current Account Switch
Service (CASS) guarantee  |  | On 16 September 2013, Bacs (previously Payments Council)
launched CASS. The service is free-to-use for consumers, small charities, small businesses and small trusts, and is designed to make switching current accounts from one bank or building society to another, simpler, reliable and hassle-free, thus
removing customers perceived barriers to switching. The new service is backed by a customer guarantee and aims to increase competition in the high street, support the entry of new banks in the current account marketplace and give customers
greater choice if they want to switch.





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|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





|                                                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|----------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Term                                            |  | Definition                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Customer loans /
customer deposits              |  | Money lent to or deposited by all individuals and companies
that are not credit institutions. Such funds are predominantly recorded as assets and liabilities in the balance sheet under Loans and advances to customers and Deposits by customers, respectively.                                                                                                                                                                                                                                                                  
|Customer funding gap                            |  | Customer loans less customer deposits.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Customer satisfaction                           |  | See Corporate customer satisfaction and
Retail customer satisfaction.                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Debt restructuring                              |  | This occurs when the terms and provisions of outstanding debt
agreements are changed. This is often done in order to improve cash flow and the ability of the borrower to repay the debt. It can involve altering the repayment schedule as well as reducing the debt or interest charged on the loan.                                                                                                                                                                                                                             
|Debt securities                                 |  | Transferable instruments creating or acknowledging
indebtedness. They include debentures, bonds, certificates of deposit, notes and commercial paper. The holder of a debt security is typically entitled to the payment of principal and interest, together with other contractual rights under the terms
of the issue, such as the right to receive certain information. Debt securities are generally issued for a fixed term and redeemable by the issuer at the end of that term. Debt securities can be secured or unsecured.
|Debt securities in issue                        |  | Transferable certificates of indebtedness of the Santander UK
group to the bearer of the certificates. These are liabilities of the Santander UK group and include commercial paper, certificates of deposit, bonds and medium-term notes.                                                                                                                                                                                                                                                                                         
|Defined benefit
obligation                      |  | The present value of expected future payments required to settle the obligations of a defined benefit plan resulting from employee
service.                                                                                                                                                                                                                                                                                                                                                                                        
|Defined benefit plan                            |  | A pension plan that defines an amount of pension benefit to
be provided, usually as a function of one or more factors such as age, years of service or compensation. The employers obligation can be more or less than its contributions to the fund.                                                                                                                                                                                                                                                                             
|Defined contribution
plan                       |  | A pension plan under which the Santander UK group pays fixed
contributions as they fall due into a separate entity (a fund) and will have no legal or constructive obligations to pay further contributions, i.e. the employers obligation is limited to its contributions to the fund.                                                                                                                                                                                                                                           
|Delinquency                                     |  | See Arrears.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Deposits by banks                               |  | Money deposited by banks and other credit institutions. They
include money-market deposits, securities sold under repurchase agreements, and other short-term deposits. Such funds are recorded as liabilities in the Santander UK groups balance sheet under Deposits by Banks, Trading Liabilities or
Financial Liabilities designated at Fair Value.                                                                                                                                                                           
|Derivative                                      |  | A contract or agreement whose value changes with changes in
an underlying index such as interest rates, foreign exchange rates, share prices or indices and which requires no initial investment or an initial investment that is smaller than would be required for other types of contracts with a similar response
to market factors. The principal types of derivatives are: swaps, forwards, futures and options.                                                                                                             
|Digital customers                               |  | Digital customers reflect the number of customers who have
logged onto Retail or Business online banking or mobile app at least once in the month.                                                                                                                                                                                                                                                                                                                                                                                 
|Distributable items                             |  | Equivalent to distributable profits under the Companies Act
2006.                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Dividend payout ratio                           |  | Equity dividend declared as a percentage of earnings
attributable to ordinary shareholders (profit after tax less payment of dividend on equity accounted instruments and non-controlling interests). The payment of each dividend is subject to regulatory approval.                                                                                                                                                                                                                                                              
|Economic capital                                |  | An internal measure of the minimum equity and preference
capital required for the Santander UK group to maintain its credit rating based upon its risk profile.                                                                                                                                                                                                                                                                                                                                                                    
|Expected loss                                   |  | The Santander UK group measure of anticipated loss for
exposures captured under an internal ratings-based credit risk approach for capital adequacy calculations. It is measured as the Santander UK group-modelled view of anticipated loss based on Probability of Default, Loss Given Default and Exposure at
Default, with a one-year time horizon.                                                                                                                                                                            
|Exposure                                        |  | The maximum loss that a financial institution might suffer if
a borrower, counterparty or group fails to meet their obligations or assets and off-balance sheet positions have to be realised.                                                                                                                                                                                                                                                                                                                                     
|Exposure at default
(EAD)                       |  | The estimation of the extent to which the Santander UK group
may be exposed to a customer or counterparty in the event of, and at the time of, that counterpartys default. At default, the customer may not have drawn the loan fully or may already have repaid some of the principal, so that exposure is
typically less than the approved loan limit.                                                                                                                                                                          
|Fair value adjustment                           |  | An adjustment to the fair value of a financial instrument
which is determined using a valuation technique (level 2 and level 3) to include additional factors that would be considered by a market participant that are not incorporated within the valuation model.                                                                                                                                                                                                                                                               
|Financial Conduct
Authority (FCA)               |  | A UK quasi-governmental agency formed as one of the
successors to the Financial Services Authority (FSA). The FCA regulates financial firms providing services to UK consumers and maintains the integrity of the UKs financial markets. It focuses on the regulation of conduct by both retail and
wholesale financial services firms.                                                                                                                                                                                           
|Financial Services
Compensation Scheme (FSCS)   |  | The UKs statutory fund of last resort for customers of
authorised financial services firms, established under the Financial Services and Markets Act (FSMA) 2000. The FSCS can pay compensation to customers if a UK PRA authorised firm is unable, or likely to be unable, to pay claims against it (for
instance, an authorised bank is unable to pay claims by depositors). The FSCS is funded by levies on firms authorised by the PRA, including Santander UK plc and other members of the Santander UK group.               
|First/Second Charge                             |  | First charge (also known as first lien): debt that places its
holder first in line to collect compensation from the sale of the underlying collateral in the event of a default on the loan. Second charge (also known as second lien): debt that is issued against the same collateral as a higher charge debt but
that is subordinate to it. In the case of default, compensation for this debt will only be received after the first charge has been repaid and thus represents a riskier investment than the first charge.     
|Forbearance                                     |  | Forbearance takes place when a concession is made on the
contractual terms of a loan in response to an obligors financial difficulties.                                                                                                                                                                                                                                                                                                                                                                                           
|Full time equivalent                            |  | Full time equivalent employee units are the on-job hours paid
for employee services divided by the number of ordinary-time hours normally paid for a full-time staff member when on the job (or contract employee where applicable).                                                                                                                                                                                                                                                                                               
|Funded/unfunded                                 |  | Exposures where the notional amount of the transaction is
either funded or unfunded. Represents exposures where a commitment to provide future funding has been made and the funds have been released/not released.                                                                                                                                                                                                                                                                                                                
|Funding for Lending
Scheme (FLS)                |  | A scheme designed by the Bank of England and HM Treasury to
incentivise banks and building societies to boost their lending to UK households and non-financial companies. It aims to do this by providing funding to banks and building societies for an extended period, with both the price and quantity of
funding provided linked to their performance in lending to the UK non-financial sector.                                                                                                                              
|Home loan (Residential
mortgage)                |  | A loan to purchase a residential property which is then used
as collateral to guarantee repayment of the loan. The borrower gives the lender a lien against the property and the lender can foreclose on the property if the borrower does not repay the loan per the agreed terms. Also known as a residential
mortgage.                                                                                                                                                                                                          
|Impaired loans                                  |  | Loans where the Santander UK group does not expect to collect
all the contractual cash flows or to collect them when they are contractually due.                                                                                                                                                                                                                                                                                                                                                                                   
|Impairment loss
allowance (Loan loss allowance) |  | An impairment loss allowance held on the balance sheet as a
result of the raising of a charge against profit for the incurred loss in the lending book. An impairment loss allowance may be either identified or unidentified and individual or collective.                                                                                                                                                                                                                                                                        





Santander UK plc307



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##### Table of Contents



Annual Report 2016

Other
information for US investors









|                                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|----------------------------------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Term                                                              |  | Definition                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Impairment losses                                                 |  | The raising of a charge against profit for the incurred loss
inherent in the lending book following an impairment review. For financial assets carried at amortised cost, impairment losses are recognised in the income statement and the carrying amount of the financial asset or group of financial assets is
reduced by establishing an allowance for impairment losses. For available-for- sale financial assets, the cumulative loss including impairment losses is removed from equity and recognised in the income statement.                              
|Individually assessed
loan impairment provisions                  |  | Impairment is measured individually for assets that are
individually significant. For these assets, the Santander UK group measures the amount of the impairment loss as the difference between the carrying amount of the asset or group of assets and the present value of the estimated future cash flows from
the asset or group of assets discounted at the original effective interest rate of the asset.                                                                                                                                                     
|Internal Capital
Adequacy Assessment Process (ICAAP)              |  | The Santander UK groups own assessment of its
regulatory capital requirements, as part of CRD IV. It takes into account the regulatory and commercial environment in which the Santander UK group operates, the Santander UK groups Risk Appetite, the management strategy for each of the
Santander UK groups material risks and the impact of appropriate adverse scenarios and stresses on the Santander UK groups capital requirements.                                                                                                                     
|Internal Liquidity
Adequacy Assessment Process (ILAAP)            |  | The Santander UK groups own assessment of the prudent level of liquidity that is consistent with the Santander UK groups LRA. It
documents and demonstrates the Santander UK groups overall liquidity adequacy  an appropriate level of liquid resources, a prudent funding profile and comprehensive management and control of liquidity and funding risks.                                                                                                                                                                                                    
|Internal ratings-based
approach (IRB)                             |  | The Santander UK groups method, under the CRD IV framework, for calculating credit risk capital requirements using the Santander UK
groups internal Probability of Default models but with supervisory estimates of Loss Given Default and conversion factors for the calculation of Exposure at Default.                                                                                                                                                                                                                                                         
|Investment grade                                                  |  | A debt security, treasury bill or similar instrument with a credit rating measured by external agencies of AAA to BBB.                                                                                                                                                                                                                                                                                                                                                                                                                                              
|ISDA Master agreement                                             |  | Standardised contract developed by ISDA (International Swaps
and Derivatives Association) used as an umbrella under which bilateral derivatives contracts are entered into.                                                                                                                                                                                                                                                                                                                                                                                         
|Large corporate                                                   |  | Enterprises which have a turnover above £500m per
annum.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Lending to corporates                                             |  | The sum of our Business banking, Commercial Banking and
Global Corporate Banking loan balances.                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Level 1                                                           |  | The fair value of these financial instruments is based on
unadjusted quoted prices for identical assets or liabilities in an active market that the Santander UK group has the ability to access at the measurement date.                                                                                                                                                                                                                                                                                                                                           
|Level 2                                                           |  | The fair value of these financial instruments is based on
quoted prices in markets that are not active or quoted prices for similar assets or liabilities, recent market transactions, inputs other than quoted market prices for the asset or liability that are observable either directly or indirectly for
substantially the full term, and inputs to valuation techniques that are derived principally from or corroborated by observable market data through correlation or other statistical means for substantially the full term of the asset or liability.
|Level 3                                                           |  | The fair value of these financial instruments is based on
inputs to the pricing or valuation techniques that are significant to the overall fair value measurement of the asset or liability are unobservable.                                                                                                                                                                                                                                                                                                                                                      
|Liquid assets coverage
of wholesale funding of less than one year |  | LCR eligible liquidity pool divided by wholesale funding with a residual maturity of less than one year.                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Liquidity Coverage Ratio
(LCR)                                    |  | The LCR is intended to ensure that a bank maintains an adequate level of unencumbered, high quality liquid assets which can be used to offset
the net cash outflows the bank could encounter under a short-term significant liquidity stress scenario.                                                                                                                                                                                                                                                                                                              
|LCR eligible liquidity
pool                                       |  | Assets eligible for inclusion in the LCR as high quality liquid assets. The LCR eligible liquidity pool also covers both Pillar 1 and Pillar
2 risks.                                                                                                                                                                                                                                                                                                                                                                                                               
|Loan loss rate                                                    |  | Defined as a rolling twelve months impairment charge on loans and advances divided by average loans and advances.                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Loan-to-deposit ratio
(LDR)                                       |  | LDR is calculated as loans and advances to customers (excluding reverse repos) divided by deposits by customers (excluding repos).                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Loan to value ratio (LTV)                                         |  | The amount of a first mortgage charge as a percentage of the
total appraised value of real property. The LTV ratio is used in determining the appropriate level of risk for the loan and therefore the price of the loan to the borrower. LTV ratios may be expressed in a number of ways, including origination LTV
and indexed LTV.                                                                                                                                                                                                                               
|Loss Given Default (LGD)                                          |  | The fraction of Exposure at Default that will not be
recovered following default. LGD comprises the actual loss (the part that is not recovered), together with the economic costs associated with the recovery process.                                                                                                                                                                                                                                                                                                                                            
|Loyal retail customers                                            |  | Primary banking current account customers (those who have a
minimum credit turnover of at least £500 per month and at least two direct debits on the account) who hold an additional product.                                                                                                                                                                                                                                                                                                                                                                       
|Loyal SME and corporate
customers                                 |  | Business banking and corporate customers that hold at least
three products. Corporate customers in the trade business must also have a current account with a minimum activity threshold specific to their customer segment.                                                                                                                                                                                                                                                                                                                                        
|Master netting agreement                                          |  | An industry standard agreement which facilitates netting of
transactions (such as financial assets and liabilities including derivatives) in jurisdictions where netting agreements are recognised and have legal force. The netting arrangements do not generally result in an offset of balance sheet assets and
liabilities for accounting purposes, as transactions are usually settled on a gross basis.                                                                                                                                                       
|Medium-Term Funding
(MTF)                                         |  | Shown at a sterling equivalent value. Consists of senior debt
issuance, asset-backed issuance (including securitisation and covered bond issuance) and structured issuance (including firm financing repurchase agreements). MTF excludes any collateral received from the Bank of Englands Funding for Lending
Scheme (FLS) or Term Funding Scheme (TFS).                                                                                                                                                                                                         
|Medium-Term Notes
(MTNs)                                          |  | Corporate notes (or debt securities) continuously offered by
a company to investors through a dealer. Investors can choose from differing maturities, ranging from nine months to 30 years. They can be issued on a fixed or floating coupon basis or with an exotic coupon; with a fixed maturity date (non-callable)
or with embedded call or put options or early repayment triggers. MTNs are most generally issued as senior, unsecured debt.                                                                                                                  
|Mid corporates                                                    |  | Enterprises which have a turnover of between £50m and
£500m per annum.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Mortgages                                                         |  | Refers to residential retail mortgages only and excludes
social housing and commercial mortgage assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Mortgage-Backed
Securities (MBS)                                  |  | Securities that represent interests in groups of mortgages,
which may be on residential or commercial properties. Investors in these securities have the right to cash received from future mortgage payments (interest and/or principal). When the MBS references mortgages with different risk profiles, the MBS is
classified according to the highest risk class.                                                                                                                                                                                               
|Mortgage retention                                                |  | The proportion of customers with a maturing mortgage that
remain with Santander. Applied to mortgages four months post maturity and is calculated as a twelve-month average of retention rates.                                                                                                                                                                                                                                                                                                                                                                     
|n.m.                                                              |  | Not meaningful when the change is above 100%.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       





308Santander UK plc



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##### Table of Contents

|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and       |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | other information |  |          





|                                               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|---------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Term                                           |  | Definition                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Net fee and commission
income                  |  | Fee and commission income minus other fees paid that are not
an integral part of the effective interest rate. For retail and corporate products, fee and commission income consists principally of collection services fees, commission on foreign currencies, commission and other fees received from retailers for
processing credit card transactions, fees received from other credit card issuers for providing cash advances for their customers through the Santander UK groups branch and ATM networks, annual fees payable by credit card holders and fees for
non-banking financial products.                   
|Net interest income                            |  | The difference between interest received on assets and
interest paid on liabilities.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Net Interest Margin (NIM)                      |  | Net interest income as a percentage of average
interest-earning assets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Net Stable Funding Ratio
(NSFR)                |  | The ratio of available stable funding resources to stable
funding requirements over a one year time horizon, assuming a stressed scenario. The Basel III rules require this ratio to be over 100%.                                                                                                                                                                                                                                                                                                                                                                                                                         
|Non-performing loans
(NPLs)                    |  | Loans and advances are classified as non-performing typically
when the counterparty fails to make payments when contractually due for three months or longer, although there can be additional qualifying criteria depending upon the business segment and product. For additional information on the definition of
NPLs, see Santander UK group LevelCredit risk management  risk measurement and control in the Risk review section of this Annual Report.                                                                                                                                                           
|NPL ratio                                      |  | NPLs as a percentage of loans and advances to customers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Other retail products                          |  | Other Retail products include Business Banking, Cater Allen, Structured Products, cahoot and the branch in Jersey.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Over the counter (OTC)
derivatives             |  | Contracts that are traded (and privately negotiated) directly between two parties, without going through an exchange or other intermediary.
They offer flexibility because, unlike standardised exchange-traded products, they can be tailored to fit specific needs.                                                                                                                                                                                                                                                                                                                                                      
|Own credit                                     |  | The effect of the Santander UK groups own credit standing on the fair value of financial liabilities.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Past due                                       |  | A financial asset such as a loan is past due when the counterparty has failed to make a payment when contractually due.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|People Supported                               |  | People supported through our charity partnerships and leading
Explorer, Transformer and Changemaker programmes. Employee volunteer activities are organised through our flagship Discovery Project programme, the Santander Foundation and Santander Universities.                                                                                                                                                                                                                                                                                                                                                         
|Pillar 2                                       |  | The part of the CRD IV Accord which sets out the process by
which a bank should review its overall capital adequacy and the processes under which the supervisors evaluate how well financial institutions are assessing their risks and take appropriate actions in response to the assessments.                                                                                                                                                                                                                                                                                                                          
|Pillar 3                                       |  | The part of the CRD IV Accord which sets out the disclosure
requirements for firms to publish details of their risks, capital and risk management. The aims are greater transparency and strengthening market discipline.                                                                                                                                                                                                                                                                                                                                                                                                  
|Potential problem loans                        |  | Loans other than non-accrual loans, accruing loans which are
contractually overdue 90 days or more as to principal or interest and troubled debt restructurings where known information about possible credit problems of the borrower causes management to have serious doubts about the borrowers ability to
meet the loans repayment terms.                                                                                                                                                                                                                                                                           
|Prime/prime mortgage
loans                     |  | A US description for mortgages granted to the most creditworthy category of borrowers.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Private equity investments                     |  | Equity holdings in operating companies not quoted on a public exchange.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Prudential Regulation
Authority (PRA)          |  | The UK financial services regulator formed as one of the
successors to the FSA. The PRA is part of the Bank of England and is responsible for the prudential regulation and supervision of banks, building societies, credit unions, insurers and major investment firms. It sets standards and supervises
financial institutions at the level of the individual firm.                                                                                                                                                                                                                                                     
|Regulatory capital                             |  | The amount of capital that the Santander UK group holds,
determined in accordance with rules established by the UK PRA for the consolidated Santander UK group and by local regulators for individual Santander UK group companies.                                                                                                                                                                                                                                                                                                                                                                                        
|Repurchase agreement
(Repo)                    |  | In a sale and repurchase agreement one party, the seller,
sells a financial asset to another party, the buyer, under commitments to reacquire the asset at a later date. The buyer at the same time agrees to resell the asset at the same later date. From the sellers perspective such agreements are
securities sold under repurchase agreements (repos) and from the buyers securities purchased under commitments to resell (reverse repos).                                                                                                                                                                        
|Residential Mortgage-
Backed Securities (RMBS) |  | Securities that represent interests in a group of residential mortgages. Investors in these securities have the right to cash received from
future mortgage payments (interest and/or principal).                                                                                                                                                                                                                                                                                                                                                                                                                          
|Retail customer satisfaction                   |  | Measured through the Financial Research Survey (FRS), a
monthly personal finance survey of around 5,000 consumers prepared by the independent market research agency, GfK. The Overall Satisfaction score refers to proportion of extremely and very satisfied customers across mortgages, savings,
main current accounts, home insurance, UPLs and credit cards, based on a weighting of those products calculated to reflect the average product distribution across Santander UK and competitor brands.                                                                                                               
|Retail deposit spread                          |  | Retail Banking customer deposit spreads against the relevant
swap rate or LIBOR. Retail Banking customer deposits include savings and bank accounts for personal and business banking customers.                                                                                                                                                                                                                                                                                                                                                                                                                           
|Retail IRB approach                            |  | The Santander UK groups internal method of calculating
credit risk capital requirements for its key retail portfolios. The FSA approved the Santander UK groups application of the Retail IRB approach to the Santander UK groups credit portfolios with effect from 1 January 2008.                                                                                                                                                                                                                                                                                                                                    
|Retail loans                                   |  | Loans to individuals rather than institutions, including
residential mortgage lending and banking and consumer credit.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Risk Appetite                                  |  | The level of risk (types and quantum) that the Santander UK
group is willing to accept (or not accept) to safeguard the interests of shareholders whilst achieving business objectives.                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Risk-weighted assets
(RWA)                     |  | A measure of a banks assets adjusted for their associated risks. Risk weightings are established in accordance with the Basel Capital
Accord as implemented by the PRA.                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Santander UK                                   |  | Refers to Santander UK Group Holdings plc and its subsidiaries.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|Securitisation                                 |  | A process by which a group of assets, usually loans, are
aggregated into a pool, which is used to back the issuance of new securities. A company sells assets to a structured entity which then issues securities backed by the assets, based on their value. This allows the credit quality of the assets to be
separated from the credit rating of the original company and transfers risk to external investors. Assets used in securitisations include mortgages to create mortgage-backed securities. Santander UK has established securitisation structures as part
of its funding and capital management activities.





Santander UK plc309



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Annual Report 2016

Other
information for US investors









|                                                                            |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|--------------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Term                                                                        |  | Definition                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Select customers                                                            |  | Customers who have a Santander Current Account plus one of
the following: monthly credit turnover of £5k, or savings, banking and investments worth £75k, or a Santander mortgage on a property worth a minimum of £500k.                                                                                                                                                                                                                                                                           
|Small and medium
enterprises (SMEs)                                         |  | Enterprises with a turnover of between £250,000 and £50m per annum.                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Standardised approach                                                       |  | In relation to credit risk, a method for calculating credit
risk capital requirements under CRD IV, using External Credit Assessment Institutions ratings and supervisory risk weights. The Standardised approach is less risk-sensitive than IRB (see IRB above). In relation to operational risk, a
method of calculating the operational capital requirement under CRD IV, by the application of a supervisory defined percentage charge to the gross income of eight specified business lines.
|Stress testing                                                              |  | Stress testing is a management tool that facilitates a forward looking perspective on risk management, strategic planning, capital, and
liquidity and funding planning.                                                                                                                                                                                                                                                                                                                             
|Structured entity                                                           |  | An entity that has been designed so that voting or similar
rights are not the dominant factor in deciding who controls the entity, such as when any voting rights relate to administrative tasks only and the relevant activities are directed by means of contractual arrangements.                                                                                                                                                                                                                
|Structured
finance/notes                                                    |  | A structured note is an instrument which pays a return linked to the value or level of a specified asset or index and sometimes offers
capital protection if the value declines. Structured notes can be linked to a range of underlying assets, including equities, interest rates, funds, commodities and foreign currency.                                                                                                                                                                       
|Subordinated liabilities                                                    |  | Liabilities which, in the event of insolvency or liquidation of the issuer, are subordinated to the claims of depositors and other creditors
of the issuer.                                                                                                                                                                                                                                                                                                                                         
|Sub-prime                                                                   |  | Loans to borrowers typically having weakened credit histories
that include payment delinquencies and potentially more severe problems such as court judgements and bankruptcies. They may also display reduced repayment capacity as measured by credit scores, high debt-to-income ratios, or other criteria
indicating heightened risk of default.                                                                                                                                                
|Supranational                                                               |  | An international organisation where member states transcend
national boundaries or interests to share in decision-making and vote on issues relating to the organisations geographical focus.                                                                                                                                                                                                                                                                                                      
|SVR                                                                         |  | Standard Variable Rate for mortgages.                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Tier 1 capital                                                              |  | A measure of a banks financial strength defined by the
PRA. It captures Core Tier 1 capital plus other Tier 1 securities in issue, but is subject to a deduction in respect of material holdings in financial companies.                                                                                                                                                                                                                                                                           
|Tier 1 capital ratio                                                        |  | The ratio expresses Tier 1 capital as a percentage of risk weighted assets.                                                                                                                                                                                                                                                                                                                                                                                                                         
|Tier 2 capital                                                              |  | Defined by the PRA. Broadly, it includes qualifying
subordinated debt and other Tier 2 securities in issue, eligible collective impairment allowances, unrealised available for sale equity gains and revaluation reserves. It is subject to deductions relating to the excess of expected loss over
regulatory impairment allowance, securitisation positions and material holdings in financial companies.                                                                                        
|Total operating income                                                      |  | Total operating income comprises net interest and similar
income, net fee and commission income and net trading and other income, as described in Notes 3, 4 and 5, respectively, of the Consolidated Financial Statements.                                                                                                                                                                                                                                                                         
|Total wholesale funding                                                     |  | Comprises the sum of all outstanding debt securities,
structured issuance (including firm financing repurchase agreements), subordinated debt and capital issuance, TFS and non-customer deposits. Total wholesale funding excludes any collateral received as part of the FLS.                                                                                                                                                                                                                     
|Trading book                                                                |  | Positions in financial instruments held either with trading
intent or in order to hedge other elements of the trading book, which must be free of restrictive covenants on their tradability or ability to be hedged.                                                                                                                                                                                                                                                                               
|Troubled debt
restructurings                                                |  | A US description for restructuring a debt whereby the creditor for economic or legal reasons related to a debtors financial
difficulties grants a concession to the debtor that it would not otherwise consider.                                                                                                                                                                                                                                                                                   
|UK leverage ratio
(previously known as PRA end-point Tier 1 leverage
ratio) |  | CRD IV end-point Tier 1 capital divided by exposures as defined by the European Commission Delegated Regulation 2015/62 of October 2014. In
July 2016, the definition was amended to exclude from the calculation for total exposure those assets held against central banks that are matched by deposits in the same currency and of equal or longer maturity.                                                                                                                                     
|Value at Risk (VaR)                                                         |  | An estimate of the potential loss which might arise from
market movements under normal market conditions, if the current positions were to be held unchanged for one business day, measured to a confidence level.                                                                                                                                                                                                                                                                                  
|Wholesale funding with
a residual maturity of less than one year            |  | Wholesale funding which has a residual maturity of less than one year at the balance sheet date.                                                                                                                                                                                                                                                                                                                                                                                                    
|Write-down                                                                  |  | After an advance has been identified as impaired and is
subject to an impairment allowance, the stage may be reached whereby it is concluded that there is no realistic prospect of further recovery. Write-downs will occur when, and to the extent that, the whole or part of a debt is considered
irrecoverable.                                                                                                                                                                                 
|Wrong-way risk                                                              |  | An aggravated form of concentration risk and arises when
there is an adverse correlation between the counterpartys probability of default and the mark-to-market value of the underlying transaction.                                                                                                                                                                                                                                                                                              





310Santander UK plc



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|             |  |                    |  |              |  |             |  |      |  |      |  |          |  |                   |  |          
|------------ |  | ------------------ |  | ------------ |  | ----------- |  | ---- |  | ---- |  | -------- |  | ----------------- |  | ---------
|             |  |                    |  |              |  |             |  |     
|Risk factors |  | Risk elements in   |  | Taxation for |  | Articles of |  | ITRA |  | NYSE |  | Glossary |  | Contact and other |  | Form 20-F
|             |  | the loan portfolio |  | US investors |  | Association |  |      |  |      |  |          |  | information       |  |          





Contact and other information

Santander Shareholder Relations



|                                              |  |                                                                    |  |                                  
|--------------------------------------------- |  | ------------------------------------------------------------------ |  | ---------------------------------
|2 Triton Square Regents Place
London NW1 3AN |  | Phone numbers: 0871-384-2000
+44 (0) 121-415-7188 (outside the UK) |  | Email: shareholders@santander.com

Designated agent

The designated agent for
service of process on Santander UK in the United States is Abbey National Treasury Services plc (Connecticut branch), 400 Atlantic Street, Stamford, CT 06901.

Documents on display

The Company is subject to the information requirements of
the US Securities Exchange Act of 1934. In accordance with these requirements, the Company files its Annual Report and other related documents with the US Securities and Exchange Commission. These documents may be inspected by US investors at the US
Securities and Exchange Commissions public reference rooms, which are located at 100 F Street NE, Room 1580, Washington, DC 20549-0102. Information on the operation of the public reference rooms can be obtained by calling the US Securities and
Exchange Commission on +1-202-551-8090 or by looking at the US Securities and Exchange Commissions website at www.sec.gov.

None of the websites referred to in
this Annual Report on Form 20-F for the year ended 31 December 2016 (the Form 20-F), including where a link is provided, nor any of the information contained on such websites is incorporated by reference in the Form 20-F.

Legal proceedings

We are party to various legal proceedings in the ordinary
course of business, the ultimate resolution of which is not expected to have a material adverse effect on our financial position or our results of operations. See Notes 33 and 35 to the Consolidated Financial Statements.

Material contracts

We are party to various contracts in the ordinary course of
business. For the two years ended 31 December 2016 there have been no material contracts entered into outside the ordinary course of business, except for the contracts described below.

Abbey National Treasury Services plc, Santander UK plc, and Cater Allen Limited, which are the three PRA-regulated entities within the Santander UK group, are party to a
capital support deed dated 23 December 2015 (the Capital Support Deed) with certain other non-regulated subsidiaries of Santander UK plc and Santander UK Group Holdings plc. The parties to the Capital Support Deed constitute a core UK group as
defined in the PRA Rulebook. Exposures of each of the three regulated entities to other members of the core UK group are exempt from large exposure limits that would otherwise apply. The purpose of the Capital Support Deed is to facilitate the
prompt transfer of available capital resources from, or repayment of liabilities by, the non-regulated parties to any of the regulated parties in the event that one of the regulated parties has breached or is at risk of breaching its capital
resources requirements or risk concentrations requirements. The core UK group permission expires on 31 December 2018.

Audit fees

See Note 7 to the Consolidated Financial Statements.

Accounting developments under
IFRS

See Note 1 to the Consolidated Financial Statements.

Share capital

Details of the Companys share capital are set out in Note 36 to the Consolidated Financial Statements.

Major shareholders

At 31 December 2013, the Company was a subsidiary of
Banco Santander SA and Santusa Holding SL. With effect from 10 January 2014, Santander UK Group Holdings Limited, a subsidiary of Banco Santander SA and Santusa Holding SL, became the beneficial owner of the entire issued ordinary share capital
of the Company by virtue of a share exchange agreement between Santander UK Group Holdings Limited, Banco Santander SA and Santusa Holding SL.

Exchange controls

There are no UK laws, decrees or regulations that restrict our export or import of capital, including the availability of cash and cash equivalents for use by
us, or that affect the remittance of dividends or other shareholder payments to non-UK holders of Company shares, except as outlined in the section on Taxation for US Investors above.





Santander UK plc311



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Annual Report 2016

Other
information for US investors









Cross-reference to Form 20-F



|    |  |                                                                        |  |                                                                         |  |                  
|--- |  | ---------------------------------------------------------------------- |  | ----------------------------------------------------------------------- |  | -----------------
|1   |  | Identity of Directors, Senior Management and Advisers                  |  | *                                                                      
|2   |  | Offer Statistics and Expected Timetable                                |  |                                                                         |  | *                
|3   |  | Key Information                                                        |  | Selected Financial Data                                                 |  | 273              
|    |  |                                                                        |  | Capitalisation and Indebtedness                                         |  | *                
|    |  |                                                                        |  | Reasons for the Offer and use of Proceeds                               |  | *                
|    |  |                                                                        |  | Risk Factors                                                            |  | 276              
|4   |  | Information on the Company                                             |  | History and Development of the Company                                  |  | 160, 25          
|    |  |                                                                        |  | Business Overview                                                       |  | 2, 8, 11, 14, 162
|    |  |                                                                        |  | Organisational Structure                                                |  | 99, 160          
|    |  |                                                                        |  | Property, Plant and Equipment                                           |  | 221              
|4A  |  | Unresolved Staff Comments                                              |  |                                                                         |  | N/a              
|5   |  | Operating and Financial Review and Prospects                           |  | Operating Results                                                       |  | 5, 173           
|    |  |                                                                        |  | Liquidity and Capital Resources                                         |  | 90, 106          
|    |  |                                                                        |  | Research and Development, Patents and Licenses, etc                     |  | N/a              
|    |  |                                                                        |  | Trend Information                                                       |  | 2                
|    |  |                                                                        |  | Off-Balance Sheet Arrangements                                          |  | 28               
|    |  |                                                                        |  | Contractual Obligations                                                 |  | 28               
|6   |  | Directors, Senior Management and Employees                             |  | Directors and senior management                                         |  | 130              
|    |  |                                                                        |  | Compensation                                                            |  | 152              
|    |  |                                                                        |  | Board Practices                                                         |  | 135              
|    |  |                                                                        |  | Employees                                                               |  | 198              
|    |  |                                                                        |  | Share Ownership                                                         |  | 244              
|7   |  | Major Shareholders and Related Party Transactions                      |  | Major Shareholders                                                      |  | 311              
|    |  |                                                                        |  | Related Party Transactions                                              |  | 248              
|    |  |                                                                        |  | Interests of Experts and Counsel                                        |  | *                
|8   |  | Financial Information                                                  |  | Consolidated Statements and Other Financial Information                 |  | 167, 173, 311    
|    |  |                                                                        |  | Significant Changes                                                     |  | 160              
|9   |  | The Offer and Listing                                                  |  | Offer and Listing Details                                               |  | *                
|    |  |                                                                        |  | Plan of Distribution                                                    |  | *                
|    |  |                                                                        |  | Markets                                                                 |  | N/a              
|    |  |                                                                        |  | Selling shareholders                                                    |  | *                
|    |  |                                                                        |  | Dilution                                                                |  | *                
|    |  |                                                                        |  | Expenses of the Issue                                                   |  | *                
|10  |  | Additional Information                                                 |  | Share Capital                                                           |  | *                
|    |  |                                                                        |  | Articles of Association                                                 |  | 303              
|    |  |                                                                        |  | Material Contracts                                                      |  | 311              
|    |  |                                                                        |  | Exchange Controls                                                       |  | 311              
|    |  |                                                                        |  | Taxation                                                                |  | 302              
|    |  |                                                                        |  | Dividends and Paying Agents                                             |  | *                
|    |  |                                                                        |  | Statements by Experts                                                   |  | *                
|    |  |                                                                        |  | Documents on Display                                                    |  | 311              
|    |  |                                                                        |  | Subsidiary Information                                                  |  | N/a              
|11  |  | Quantitative and Qualitative Disclosures about Market Risk             |  | 81                                                                     
|12  |  | Description of Securities Other Than Equity Securities                 |  | Debt Securities                                                         |  | *                
|    |  |                                                                        |  | Warrants and Rights                                                     |  | *                
|    |  |                                                                        |  | Other Securities                                                        |  | *                
|    |  |                                                                        |  | American Depositary Shares                                              |  | *                
|13  |  | Defaults, Dividend Arrearages and Delinquencies                        |  |                                                                         |  | N/a              
|14  |  | Material Modifications to the Rights of Security Holders               |  | Modification of rights                                                  |  | N/a              
|    |  | and Use of Proceeds                                                    |  | Modification of rights by modifying other securities                    |  | N/a              
|    |  |                                                                        |  | Withdrawal or substitution of assets                                    |  | N/a              
|    |  |                                                                        |  | Change of trustees or paying agents                                     |  | N/a              
|    |  |                                                                        |  | Use of proceeds                                                         |  | N/a              
|15  |  | Controls and Procedures                                                |  | Disclosure Controls and Procedures                                      |  | 163              
|    |  |                                                                        |  | Managements Annual Report on Internal Control over Financial Reporting |  | 163              
|    |  |                                                                        |  | Attestation Report of the Registered Public Accounting Firm             |  | N/a              
|    |  |                                                                        |  | Changes in Internal Control Over Financial Reporting                    |  | 163              
|16A |  | Board Audit Committee Financial Expert                                 |  | 151                                                                    
|16B |  | Code of Ethics                                                         |  | 162                                                                    
|16C |  | Principal Accountant Fees and Services                                 |  | 201                                                                    
|16D |  | Exemptions from the Listing Standards for Board Audit Committees       |  | N/a                                                                    
|16E |  | Purchases of Equity Securities by the Issuer and Affiliated Purchasers |  | N/a                                                                    
|16F |  | Change in Registrants Certifying Accountant                           |  | 149, 164                                                               
|16G |  | Corporate Governance                                                   |  | 305                                                                    
|16H |  | Mine Safety Disclosure                                                 |  | N/a                                                                    
|17  |  | Financial Statements                                                   |  | N/a                                                                    
|18  |  | Financial Statements                                                   |  | 173                                                                    
|19  |  | Exhibits                                                               |  | Filed with SEC                                                         

|* | Not required for an Annual Report.
|- | ----------------------------------





312Santander UK plc



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##### Table of Contents

SIGNATURE

The registrant hereby certifies that it meets all the requirements for filing on Form 20-F and that it has duly
caused and authorized the undersigned to sign this annual report on its behalf.

SANTANDER UK plc



|    |  |                        
|--- |  | -----------------------
|By: |  | /s/ Nathan Bostock     
|    |  | Nathan Bostock         
|    |  | Chief Executive Officer

Dated: 1 March, 2017



---

##### Table of Contents

EXHIBIT INDEX



|          |  |                                                                                                                                                                                                                                                                                                                                                                 
|--------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibits1
|          | 
|1.1       |  | Articles of Association of Santander UK plc (incorporated by reference to Santander UK plcs Form 6-K furnished with the Securities and Exchange
Commission on 10 March 2010)                                                                                                                                                                                   
|          | 
|4.1       |  | Capital Support Deed dated 23 December 2015 between the Regulated Entities (as named therein, including Abbey National Treasury Services plc), the Unregulated Entities (as named therein)
and Santander UK plc (incorporated by reference to Exhibit 4.1 to Santander UK plcs Form 20-F furnished with the Securities and Exchange Commission on 4 March 2016)
|          | 
|4.2       |  | Deed of Adherence by Santander UK Group Holdings plc dated 23 December 2015 supplemental to the Capital Support Deed dated 23 December 2015 (incorporated by reference to Exhibit 4.2
to Santander UK plcs Form 20-F furnished with the Securities and Exchange Commission on 4 March 2016)                                                                    
|          | 
|7.1       |  | Statement of ratio of earnings to fixed charges2                                                                                                                                                                                                                                                                                                                
|          | 
|8.1       |  | List of Subsidiaries of Santander UK plc - the list of subsidiaries of Santander UK plc can be found in Subsidiaries, joint ventures and associates on pages 269 to 271 of the
Shareholder information section of the Form 20-F                                                                                                                               
|          | 
|12.1      |  | CEO Certificate pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                                                                                                                                                                                                                                                                       
|          | 
|12.2      |  | CFO Certificate pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                                                                                                                                                                                                                                                                       
|          | 
|13.1      |  | Certificate pursuant to Section 906 of the Sarbanes-Oxley Act of 2002                                                                                                                                                                                                                                                                                           
|          | 
|15.1      |  | Consent of PricewaterhouseCoopers LLP2                                                                                                                                                                                                                                                                                                                          
|          | 
|15.2      |  | Consent of Deloitte LLP2                                                                                                                                                                                                                                                                                                                                        





1Documents concerning Santander UK plc referred to within the Annual Report on Form 20-F 2015 may be inspected at 2 Triton Square, Regents Place, London NW1 3AN, the
principal executive offices and registered address of Santander UK plc.

2Incorporated by reference into Registration Statement Nos. 333-10232, 333-11320, 333-190509 and 333-213861 on Form F-3.