Document:

EX-10.3

 Exhibit 10.3 

THIS INSTRUMENT AND THE SECURITIES ISSUABLE UPON THE CONVERSION HEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
“ACT”). THEY MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT OR PURSUANT TO AN APPLICABLE EXEMPTION THEREFROM. 

DATED ____ JUNE 2020 

CONVERTIBLE LOAN NOTE INSTRUMENT 

RELATING TO 
 MEREO BIOPHARMA
GROUP PLC 

  
 1 

 CONTENTS 
  

							
	 1.
	 	Interpretation	  	 	4	 
	 2.
	 	Amount and description of notes	  	 	11	 
	 3.
	 	Status of notes	  	 	11	 
	 4.
	 	Use of Proceeds	  	 	13	 
	 5.
	 	Repayment of Notes	  	 	13	 
	 6.
	 	Interest	  	 	13	 
	 7.
	 	Certificates	  	 	13	 
	 8.
	 	The Register	  	 	14	 
	 9.
	 	Notes not to be quoted	  	 	15	 
	 10.
	 	Set-off	  	 	15	 
	 11.
	 	Meetings of Noteholders	  	 	15	 
	 12.
	 	Variation	  	 	15	 
	 13.
	 	Enforcement and third party rights	  	 	16	 
	 14.
	 	Notices	  	 	16	 
	 15.
	 	Governing law and jurisdiction	  	 	16	 
		
	 SCHEDULE 1
	  	 	17	 
			
	 Part 1.
	 	- Form of Tranche 1 Note Certificate	  	 	17	 
	 Part 2.
	 	- Form of Tranche 2 Note Certificate	  	 	18	 
	 Part 3.
	 	- Form of Tranche 3 Note Certificate	  	 	19	 
		
	 SCHEDULE 2 THE CONDITIONS
	  	 	20	 
			
	 Part 1.
	 	Interest, repayment and redemption	  	 	20	 
	 1.
	 	Interest	  	 	20	 
	 2.
	 	Repayment of principal	  	 	21	 
	 3.
	 	Time of payment	  	 	23	 
	 4.
	 	Redemption	  	 	23	 
	 5.
	 	Events of Default	  	 	29	 
	 6.
	 	Action following Event of Default	  	 	30	 
	 7.
	 	Taxation	  	 	31	 
			
	 Part 2.
	 	Conversion	  	 	32	 
	 1.
	 	Conversion	  	 	32	 
	 2.
	 	Procedures on conversion	  	 	33	 
			
	 Part 3.
	 	Transfer provisions, Undertakings and other matters	  	 	35	 
		
	 SCHEDULE 3 MEETINGS OF
THE NOTEHOLDERS
	  	 	41	 

  
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 THIS INSTRUMENT is made as a deed poll on ____ June 2020 

BY 
 MEREO BIOPHARMA GROUP PLC incorporated and
registered in England and Wales with company number 09481161 whose registered office is at 4th Floor, 1 Cavendish Place, London W1G 0QF, United Kingdom (the “Company”). 

WHEREAS: 
  

	A.	 The Company is entering into certain financing transactions on or around the date hereof, pursuant to
which OrbiMed Partners Master Fund Limited, OrbiMed Genesis Master Fund L.P. and OrbiMed Private Investments VII, LP (the “Lead Investors”) and certain other investors (the “Investors”) shall be subscribing for the
following securities of the Company: (x) a unit (referred to for convenience as “Ordinary Units”), consisting of (i) one ordinary share of the Company with a nominal value of £0.003 per share (such class of shares,
the “Ordinary Shares,” and all such shares to be issued to the Purchasers, the “Shares”) together with (ii) one warrant to subscribe for 0.50 Ordinary Shares (all such warrants to be issued to the
Purchasers, the “Ordinary Warrants”), at a purchase price of £0.174 per Unit and (y) a unit (referred to for convenience as the “Convertible Units”) consisting of (i) one Note together with
(ii) warrants to subscribe for a number of Ordinary Shares equal to 0.5 times the number of Ordinary Shares issuable upon conversion of each Note (all such warrants to be issued to the Purchasers, the “Note Warrants” and
together with the Ordinary Warrants (the “Warrants”) (the issuance of the foregoing Ordinary Units and Convertible Units collectively , the “Transaction”). 

 

	B.	 By exercise of the powers conferred on them by the Articles, the Directors of the Company have, by a
resolution passed on 1 June 2020, resolved to create, and to constitute the Notes hereunder. 

  

	C.	 This Instrument constitutes the Notes. 

 

	D.	 The Company and its subsidiaries are parties to an existing senior secured loan agreement in the
principal amount of £20,455,000 with Silicon Valley Bank (as lender) (“SVB”) and Kreos Capital V (UK) Limited (as lender, agent and security agent) (“Kreos”), dated 28 September 2018 (as updated and
amended from time to time) (the “Senior Loan”). 

  

	E.	 The Notes created hereunder shall be subordinated to the Senior Loan by entry into a separate
subordination deed between the Noteholders, Kreos and SVB on or around the date hereof (the “Subordination Agreement”). 

  
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 AGREED TERMS 

1. INTERPRETATION 
  

	1.1	 The definitions and rules of interpretation in this clause apply in this Instrument. 

 

	1.2	 Acceleration Date: has the meaning given in paragraph 4 of Part 1 of Schedule 2. 

ADS: has the meaning given in the Securities Purchase Agreement. 

Affiliate: means a person that owns or controls directly or indirectly another person, any person that controls or is controlled by or
is under common control with the person, including, without limitation, any subsidiaries, and any of that person’s general or limited partners, senior executive officers, directors and, for any person that is a limited liability company, that
person’s managers and members or any venture capital fund or registered investment company now or hereafter existing that is controlled by one or more general partners or managing members or investment advisor of, or shares the same management
company or investors advisor (or member thereof) with, such person. 
 Alternative Warrant Conversion Notice: has the meaning given in
the Securities Purchase Agreement. 
 Articles: means the articles of association of the Company, as amended or superseded. 

Business Day: means any day other than Saturday, Sunday or federal legal holiday in the United States of America, or public holiday or
bank holiday in the United Kingdom. 
 Certificate: means a Tranche 1 Note Certificate, a Tranche 2 Note Certificate or a Tranche 3
Note Certificate, as applicable. 
 Change of Control: means, (a) in one transaction or a series of related transactions, a
person or one or more persons acting in concert, acquiring (i) all (or substantially all) of the share capital or assets of the Company, or (ii) more than fifty percent (50%) of the outstanding equity or other securities of the Company; or
(b) any merger, consolidation, reorganisation, or business combination as a result of which the majority equity or other security holders of the Company immediately preceding such transaction (s) hold less than fifty percent (50%) of the
outstanding voting power, respectively, of the ultimate company or entity resulting from such transaction(s) immediately after consummation of such transaction. In the foregoing case, “acting in concert” means a group of persons who,
pursuant to an agreement or understanding (whether formal or informal), actively co-operate, through the acquisition and/or ownership of voting shares in the Company, to obtain or consolidate control (directly
or indirectly) of the Company provided that the persons voting in the same or consistent manner at any general meeting of the Company will not be considered to be acting in concert by virtue only of exercising their votes in such manner. 

  
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 Change of Control Payment: has the meaning given in paragraph 4.12 of Part 1 of
Schedule 2. 
 Closing Price: means: (i) if at the relevant time the Ordinary Shares continue to be admitted to trading on AIM,
the most recently reported closing price of one Ordinary Share on AIM; or (ii) if at the relevant time the Shares are no longer admitted to trading on AIM, the implied price of one Ordinary Share in pounds sterling by reference to the most
recently reported closing price of an ADS on Nasdaq. 
 Conditions: means the conditions attaching to the Notes, as set out in
Schedule 2 (as amended from time to time in accordance with this Instrument). 
 Conversion Date: means (i) in the case of
Tranche 1 Notes being converted automatically following Shareholder Approval pursuant to the provisions of paragraph 1.2 of Part 2 of Schedule 2, the date on which such Shareholder Approval is granted; and/or (ii), in the case of an Uplift Notice or
Pay Down Notice, the date specified in such notice; and/or (iii) in all other cases, the date falling 5 Business Days after service of the Conversion Notice. 

Conversion Notice: means a notice in writing served by a Noteholder to the Company to convert all or, if the Ownership Limit applies,
some of its outstanding Notes. 
 Default Rate: means the Tranche 1 Default Rate, Tranche 2 Default Rate or Tranche 3 Default
Rate (as applicable). 
 Directors: means the board of directors of the Company, or a duly authorised committee of that board, for the
time being. 
 Effective Date: means the date of this Deed. 

Event of Default: means any of the events set out in paragraph 5 of Part 1 of Schedule 2. 

Existing Indebtedness: means any indebtedness incurred by a Group Company and outstanding on or prior to the Effective Date (which for
the avoidance of doubt shall include indebtedness pursuant to the Senior Loan and the Novartis Loan Note). 
 Group Company: means
each of the Company and its subsidiaries. 
 Interest Rate: has the meaning given in paragraph 1 of Part 1 of Schedule 2. 

Kreos: has the meaning given in the recitals of this Instrument. 

Lead Investors: has the meaning given in the recitals of this Instrument. 

  
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 Nasdaq: means the Nasdaq Global Market or the Nasdaq Capital Market (as applicable).

 Notes: means the Tranche 1 Notes, the Tranche 2 Notes or the Tranche 3 Notes, as applicable. 

Noteholder: means a person for the time being entered in the Register as holder of any Notes. 

Noteholder Majority: means Noteholders holding more than 50% of the principal amount of all outstanding Notes. 

Noteholder Majority Consent: means the consent of a Noteholder Majority provided either at a meeting of Noteholders or in writing, in
each case in accordance with the requirements of Schedule 3. 
 Novartis: means Novartis Pharma AG, a company incorporated under the
laws of Switzerland. 
 Novartis Loan Note: means the convertible loan note originally issued by the Company to Novartis in the
principal amount of £3,841,479 on 8 February 2020. 
 Ordinary Shares: means the ordinary shares of £0.003 each in
the capital of the Company, which have the rights set out in the Articles. 
 Original Warrantholder: has the meaning given in the
Securities Purchase Agreement. 
 Ownership Limit: has the meaning given in paragraph 1.2 of Part 2 of Schedule 2. 

Pay Down Issue: has the meaning given in paragraph 4.7 of Part 1 of Schedule 2. 

Pay Down Notice: has the meaning given in paragraph 4.7 of Part 1 of Schedule 2. 

Pay Down Securities: has the meaning given in paragraph 4.7 of Part 1 of Schedule 2. 

Pay Down Reduction Amount: has the meaning given in paragraph 4.8 of Part 1 of Schedule 2. 

Qualifying Noteholder: means any Noteholder holding Notes with a principal amount of £6,004,803.84 million or greater. 

Redemption Date: has the meaning given in paragraph 4.1 of Part 1 of Schedule 2. 

Redemption Notice: has the meaning given in paragraph 4.13 of Part 1 of Schedule 2. 

Register: means a register of Noteholders referred to in, and kept and maintained in accordance with, clause 8. 

Registered Office: means the registered office of the Company from time to time. 

  
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 Securities Purchase Agreement: means the agreement governing the purchase of Ordinary
Shares comprising the Transaction among, inter alios, the Company, the Lead Investors and the other Investors party thereto, dated on or around the date hereof. 

Senior Lenders: means SVB and Kreos (and each of them individually, a “Senior Lender”) and/or their respective successors in
title. 
 Senior Loan: has the meaning given in the recitals of this Instrument. 

Shareholder Approval: has the meaning given in the Securities Purchase Agreement. 

Shareholders Meeting: has the meaning given in the Securities Purchase Agreement. 

Shares: has the meaning given in the recitals of this Instrument. 

Subordination Agreement: has the meaning given in the recitals of this Instrument. 

SVB: has the meaning given in the recitals of this Instrument. 

Tranche 1 Conversion Price: £0.174 per Ordinary Share, subject to adjustment as set forth in Part 3 of Schedule 2. 

Tranche 2 Conversion Price: £0.348 per Ordinary Share, subject to adjustment as set forth in Part 3 of Schedule 2. 

Tranche 1 Default Rate: has the meaning given in paragraph 1.1 of Part 1 of Schedule 2. 

Tranche 2 Default Rate: has the meaning given in paragraph 1.2 of Part 1 of Schedule 2. 

Tranche 3 Default Rate: has the meaning given in paragraph 1.3 of Part 1 of Schedule 2. 

Tranche 1 Extension Option: has the meaning given in paragraph 2.3 of Part 1 of Schedule 2. 

Tranche 1 Extension Notice: has the meaning given in paragraph 2.3 of Part 1 of Schedule 2. 

Tranche 2 Extension Option: has the meaning given in paragraph 2.5 of Part 1 of Schedule 2. 

Tranche 2 Extension Notice: has the meaning given in paragraph 2.5 of Part 1 of Schedule 2. 

Tranche 3 Extension Option: has the meaning given in paragraph 2.7 of Part 1 of Schedule 2. 

  
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 Tranche 3 Extension Notice: has the meaning given in paragraph 2.7 of Part 1 of
Schedule 2. 
 Tranche 1 Maturity Date: means 3 June 2023 or, in respect of any Tranche 1 Notes held by a Qualifying Noteholder,
such later date as may be applicable following exercise of the Tranche 1 Extension Option. 
 Tranche 2 Maturity Date: means the date
falling three years from the date of issue of such Tranche 2 Notes, or in respect of any Tranche 2 Notes held by a Qualifying Noteholder, such later date as may be applicable following exercise of the Tranche 2 Extension Option. 

Tranche 3 Maturity Date: means 3 June 2025 or, in respect of any Tranche 3 Notes held by a Qualifying Noteholder, such later date
as may be applicable following exercise of the Tranche 3 Extension Option and acceptance by the Company of the same. 
 Tranche 1 Note
Certificate: a certificate for Tranche 1 Notes in the form (or substantially in the form) set out in Part 1 of Schedule 1. 
 Tranche
2 Note Certificate: a certificate for Tranche 2 Notes in the form (or substantially in the form) set out in Part 2 of Schedule 1. 

Tranche 3 Note Certificate: a certificate for Tranche 3 Notes in the form (or substantially in the form) set out in Part 3 of Schedule
1. 
 Tranche 1 Noteholder: means a Noteholder holding Tranche 1 Notes. 

Tranche 2 Noteholder: means a Noteholder holding Tranche 2 Notes. 

Tranche 3 Noteholder: means a Noteholder holding Tranche 3 Notes. 

Tranche 1 Notes: up to £40,533,671 in aggregate unsecured convertible loan notes of £1 principal amount each, maturing on
the Tranche 1 Maturity Date constituted by this Instrument or, as the case may be, the principal amount of such loan notes for the time being issued and outstanding, and principal amount shall be construed accordingly. 

Tranche 2 Notes: up to £40,032,025 in aggregate unsecured convertible loan notes of £1 principal amount each, maturing on
the Tranche 2 Maturity Date constituted by this Instrument or, as the case may be, the principal amount of such loan notes for the time being issued and outstanding, and principal amount shall be construed accordingly. 

Tranche 3 Notes: up to £56,044,831 in aggregate unsecured loan notes of £1 principal amount each, maturing on the Tranche 3
Maturity Date constituted by this Instrument or, as the case may be, the principal amount of such loan notes for the time being issued and outstanding, and principal amount shall be construed accordingly. 

  
 8 

 Transaction: has the meaning given in the recitals of this Instrument. 

Uplift Allocation Notice: has the meaning given in paragraph 4.3 of part 1 of Schedule 2. 

Uplift Reduction Amount: has the meaning given in paragraph 4.4 of part 1 of Schedule 2. 

Uplift Securities: has the meaning given in paragraph 4.3 of part 1 of Schedule 2. 

Warrant: has the meaning given in the recitals of this Instrument. 

Warrant Instrument: means the instrument constituting the Warrants dated on or about the Effective Date. 

 

	1.3	 Clause, Schedule and paragraph headings shall not affect the interpretation of this Instrument.

  

	1.4	 References to clauses and Schedules are to the clauses of and Schedules to this Instrument and references to
paragraphs are to paragraphs of the relevant Schedule. 

  

	1.5	 The Schedules (including, for the avoidance of doubt, the Conditions) form part of this Instrument and shall
have effect as if set out in full in the body of this Instrument. Any reference to this Instrument includes the Schedules. 

  

	1.6	 A reference to this Instrument, the Conditions or to any other agreement or document referred to
in this Instrument or the Conditions is a reference to this Instrument (which shall include the Conditions), the Conditions or such other agreement or document as varied or novated in accordance with their terms from time to time.

  

	1.7	 Unless the context otherwise requires, words in the singular shall include the plural and in the plural shall
include the singular. 

  

	1.8	 Unless the context otherwise requires, a reference to one gender shall include a reference to the other
genders. 

  

	1.9	 A person includes a natural person, corporate or unincorporated body (whether or not having separate
legal personality) and that person’s personal representatives, successors and permitted assigns. 

  
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	1.10	 A reference to a company shall include any company, corporation or other body corporate, wherever and
however incorporated or established. 

  

	1.11	 A reference to a holding company or a subsidiary means a holding company or a subsidiary (as the
case may be) as defined in section 1159 of the Companies Act 2006. 

  

	1.12	 A reference to writing or written includes fax but not
e-mail (unless otherwise expressly provided in this Instrument). 

  

	1.13	 Any words following the terms including, include, in particular, for example or any
similar expression shall be construed as illustrative and shall not limit the sense of the words, description, definition, phrase or term preceding those terms. 

 

	1.14	 Where the context permits, other and otherwise are illustrative and shall not limit the sense of
the words preceding them. 

  

	1.15	 A reference to a statute or statutory provision is a reference to it as amended, extended or re-enacted from time to time. 

  

	1.16	 A reference to a statute or statutory provision shall include all subordinate legislation made from time to
time under that statute or statutory provision. 

  

	1.17	 Any obligation on a person not to do something includes an obligation not to allow that thing to be done.

  

	1.18	 A reference in this Instrument to: 

 

	 	(a)	 any Notes being outstanding means such Notes as are in issue, not redeemed, not converted and not
cancelled at the relevant time; 

  

	 	(b)	 the assets of any person shall be construed as a reference to all or any part of its business,
undertaking, property, assets, revenues (including any right to receive revenues) and uncalled capital; 

  

	 	(c)	 indebtedness shall be construed as a reference to any obligation for the payment or repayment of money,
whether as principal or as surety and whether present or future, actual or contingent; 

  

	 	(d)	 repayment includes redemption and vice versa and the words repay, redeem, repayable, redeemed and
repaid shall be construed accordingly; 

  
 10 

	 	(e)	 $ or USD denotes the lawful currency of the United States of America; 

 

	 	(f)	 £ or sterling denotes the lawful currency of the United Kingdom; and 

 

	 	(g)	 tax shall be construed so as to include any present and future tax, levy, impost, deduction,
withholding, duty or other charge of a similar nature (including, without limitation, any penalty or interest payable in connection with any failure to pay or any delay in paying any of the same). 

 

	1.19	 Unless the context otherwise requires, a reference to the Notes includes a reference to all and/or any
of the Notes. 

 2. AMOUNT AND DESCRIPTION OF NOTES 

 

	2.1	 The aggregate principal amount of the Tranche 1 Notes is limited to £40,533,671. 

 

	2.2	 The aggregate principal amount of the Tranche 2 Notes is limited to £40,032,025. 

 

	2.3	 The aggregate principal amount of the Tranche 3 Notes is limited to £56,044,831. 

 

	2.4	 The Tranche 1 Notes shall be known as the unsecured convertible loan notes due 2023 and shall be issued by the
Company in integral multiples of £1. 

  

	2.5	 The Tranche 2 Notes shall be known as the unsecured convertible loan notes due 2026 and shall be issued by the
Company in integral multiples of £1. 

  

	2.6	 The Tranche 3 Notes shall be known as the unsecured loan notes due 2025 and shall be issued by the Company in
integral multiples of £1. 

 3. STATUS OF NOTES 

 

	3.1	 The Notes when issued and outstanding shall rank pari passu, equally and rateably, without discrimination or
preference among themselves and as unsecured obligations of the Company. 

  

	3.2	 The Notes shall be issued and held subject to and with the benefit of the provisions of this Instrument
(including the Conditions). All such provisions shall be binding on the Company and the Noteholders and all persons claiming through or under them respectively and shall enure for the benefit of all Noteholders. 

  
 11 

	3.3	 No Notes shall be issued or deemed issued pursuant to this Instrument until Closing (as defined in the
Securities Purchase Agreement) has occurred in accordance with the terms and conditions of the Securities Purchase Agreement. 

  

	3.4	 No Tranche 2 Notes shall be issued to any person who is not a Qualifying Noteholder and has not served upon the
Company an Optional Warrant Conversion Notice (as defined in the Securities Purchase Agreement) in accordance with the provisions of section 5(h)(ii) of the Securities Purchase Agreement. 

 

	3.5	 Any Qualifying Noteholder who delivers an Optional Warrant Conversion Notice (as defined in the Securities
Purchase Agreement) in accordance with the provisions of Clause section 5(h)(ii) of the Securities Purchase Agreement shall have the subscription monies paid to the Company thereunder applied towards the subscription price for Tranche 2 Notes (in
the face amount of £1 for each Tranche 2 Note issued) in accordance with section 5(h)(ii) of the Securities Purchase Agreement. The subscription price in respect of all Warrants subject to the Optional Warrant Conversion Notice shall be
aggregated for purposes of determining the number of Tranche 2 Notes issued, provided that no Tranche 2 Notes shall be issued for any part payment towards a Tranche 2 Note and after aggregation of all such amounts, any remaining fractional sums
pursuant to an Optional Warrant Conversion Notice shall be discounted when calculating the number of Tranche 2 Notes to be issued. 

  

	3.6	 No Tranche 3 Notes shall be issued to any person if the Shareholder Approval is obtained on or before
7 August, 2020. 

  

	3.7	 If the Shareholder Approval is not obtained on or before 7 August, 2020, the Company shall deliver Tranche
3 Notes (in the face amount of £1 for each Tranche 3 Note issued) to each Original Warrantholder that delivers an Alternative Warrant Conversion Notice in accordance with section 5(i)(ii) of the Securities Purchase Agreement, within five
(5) Business Days after the surrender by the holder of the certificate representing the Warrant and the delivery of the Alternative Warrant Conversion Notice. 

 

	3.8	 For so long as the Senior Loan remains outstanding, no Notes shall be issued or deemed issued to any person
pursuant to this Instrument unless such person has first executed the Subordination Agreement or a deed of adherence to the Subordination Agreement (pursuant to which such person becomes bound by the terms of the Subordination Agreement) and
provided a copy of such executed document to the Company and the Senior Lenders. 

  
 12 

 4. USE OF PROCEEDS 

 

	4.1	 The proceeds of all subscriptions for the Notes shall be used in accordance with the terms and conditions of
Section 5(j) of the Securities Purchase Agreement. 

  

	4.2	 No part of the proceeds of any subscription for the Notes shall be used by the Company to make any dividend or
distribution to any shareholder in the Company, or for the repurchase of Ordinary Shares. 

 5. REPAYMENT
OF NOTES 
  

	5.1	 The Notes shall be repaid in accordance with Part 1 of Schedule 2. 

 

	5.2	 All Notes repaid by the Company shall be automatically and immediately cancelled and shall not be reissued.

 6. INTEREST 

Until the Notes are repaid by the Company or converted into Ordinary Shares, in each case in accordance with the provisions of this Instrument,
interest shall accrue and be paid on the principal amount of the Notes outstanding at the rate and in the manner provided in Part 1 of Schedule 2. 
 7.
CERTIFICATES 
  

	7.1	 Each Noteholder (or the joint holders of any Notes) shall be entitled to receive, without charge, one Tranche 1
Note Certificate and/or Tranche 2 Note Certificate and/or Tranche 3 Note Certificate (as applicable) for the Tranche 1 Notes and/or Tranche 2 Notes and/or Tranche 3 Notes registered in his (or their) names. 

 

	7.2	 Where any Notes are held jointly, the Company shall not be bound to issue more than one Certificate in respect
of such Notes and delivery of a Certificate to the person who is first named in the Register as Noteholder shall be sufficient delivery to all joint holders of such Notes. 

 

	7.3	 Each Certificate shall: 

 

	 	(a)	 bear a denoting number; 

  
 13 

	 	(b)	 indicate whether it relates to Tranche 1 Notes, Tranche 2 Notes, or Tranche 3 Notes; 

 

	 	(c)	 be issued and executed by the Company as a deed in the form (or substantially in the form) set out in Part 1 of
Schedule 1, Part 2 of Schedule 1 or Part 3 of Schedule 1 (as applicable); and 

  

	 	(d)	 have the Conditions endorsed on or attached to it. 

 

	7.4	 In the case of repayment or transfer of part only of a Noteholder’s Notes, the Certificate(s) in respect
of such Notes shall be either: 

  

	 	(a)	 endorsed with a memorandum of the nominal amount of the Notes so redeemed or transferred and the date of such
repayment or transfer; or 

  

	 	(b)	 cancelled and (without charge) replaced by a new Certificate for the balance of the principal amount of the
Notes not then repaid or transferred. 

 8. THE REGISTER 

 

	8.1	 The Company shall keep and maintain the Register at the Registered Office or (subject always to the provisions
of section 743 of the Act) at such other place as the Company may from time to time appoint for this purpose and notify to the Noteholders. 

  

	8.2	 There shall be entered in the Register: 

 

	 	(a)	 the names and addresses of the Noteholders for the time being; 

 

	 	(b)	 the principal amount of the Notes held by each Noteholder; 

 

	 	(c)	 whether the Notes held by each Noteholder are Tranche 1 Notes, Tranche 2 Notes or Tranche 3 Notes;

  

	 	(d)	 the date of issue of each of the Notes and the date on which the name of each Noteholder is entered in the
Register in respect of the Notes registered in his name; 

  

	 	(e)	 the serial number of each Certificate issued and the date of its issue; and 

 

	 	(f)	 the date(s) of all transfers and changes of ownership of any of the Notes. 

 

	8.3	 The Company shall promptly amend the Register to record any change to the name or address of a Noteholder that
is notified in writing to the Company by that Noteholder. 

  
 14 

	8.4	 The Noteholders or any of them, or any person authorised by a Noteholder, shall be at liberty at all reasonable
times during office hours to inspect the Register and to take copies of or extracts from it or any part of it. 

  

	8.5	 Every Noteholder shall be recognised by the Company as entitled to his Notes free from any equity, set-off or cross-claim against the original or an intermediate holder of such Notes. 

 9.
NOTES NOT TO BE QUOTED 
 No application has been, or shall
be, made (unless pursuant to paragraph 7.2 of Part 1 of Schedule 2) to any investment exchange (whether in the United Kingdom or otherwise) for permission to deal in, or for an official or other listing or quotation, in respect of the Notes. 

10. SET-OFF 

Payments of principal and interest in respect of the Notes shall be paid by the Company to the Noteholders in accordance with the Conditions
without any deduction or withholding (whether in respect of any set-off, counterclaim or otherwise whatsoever) unless the deduction or withholding is required by law. 

11. MEETINGS OF NOTEHOLDERS 

Meetings of the Noteholders shall be convened and held in accordance with the provisions of Schedule 3. 

12. VARIATION 
  

	12.1	 All or any of the rights for the time being attached to the Notes or other provisions of this Instrument may
from time to time (whether or not the Company is being wound up) be altered or abrogated with the prior written consent of a Noteholder Majority. Any such alteration or abrogation shall be effected by way of deed poll executed by the Company and
expressed to be supplemental to this Instrument. 

  

	12.2	 Modifications to this Instrument which are of a minor nature or made to correct a manifest error may be
effected by way of deed poll executed by the Company and expressed to be supplemental to this Instrument. 

  
 15 

	12.3	 The Company shall, within 5 Business Days of making any variation pursuant to this clause 12, send to each
Noteholder (or, in the case of joint holders, to the Noteholder named first in the Register) a copy of the deed poll (or other document) effecting the variation. 

 

	12.4	 Any modification, alteration or abrogation made pursuant to clause 12.1 or clause 12.2 shall be binding on all
the Noteholders. 

 13. ENFORCEMENT AND THIRD PARTY RIGHTS

  

	13.1	 From and after the date of this Instrument, and for so long as any Notes are outstanding or any amount is
payable or repayable by the Company in respect of the Notes, the Company undertakes to duly perform and observe its obligations under this Instrument. 

  

	13.2	 Except as expressly provided in clause 13.3, a person who is not a party to this Instrument shall not have any
rights under the Contracts (Rights of Third Parties) Act 1999 to enforce any term of this Instrument. 

  

	13.3	 This Instrument shall operate for the benefit of all Noteholders and each Noteholder shall be entitled to sue
for the performance or observance of the provisions of this Instrument in his own right so far as his own holding of Notes is concerned. 

14. NOTICES 
 Any notice to
be given to or by any Noteholder(s) for the purposes of this Instrument shall be given in accordance with the provisions of paragraph 9 and paragraph 10 of Part 3 of Schedule 2. 

15. GOVERNING LAW AND JURISDICTION 

 

	15.1	 This Instrument and the Notes and any dispute or claim arising out of or in connection with any of them or
their subject matter or formation (including non-contractual disputes or claims) shall be governed by, and construed in accordance with, the law of England and Wales. 

 

	15.2	 The courts of England and Wales shall have exclusive jurisdiction to settle any dispute or claim arising out of
or in connection with this Instrument or the Notes or their subject matter or formation (including non-contractual disputes or claims). 

This instrument has been executed as a deed and is delivered and takes effect on the date stated at the beginning of it. 

  
 16 

 Schedule 1 

Part 1. - Form of Tranche 1 Note Certificate 

  
 17 

 Part 2. - Form of Tranche 2 Note Certificate 

  
 18 

 Part 3. - Form of Tranche 3 Note Certificate 

  
 19 

 Schedule 2 The Conditions 

Part 1. Interest, repayment and redemption 

1. INTEREST 
  

	1.1	 Interest shall initially be payable on any outstanding Tranche 1 Notes (so far as not converted under Part 2 of
Schedule 2) at a fixed rate of 10% per annum (the “Interest Rate”), subject to the following adjustments: 

  

	 	(a)	 if Shareholder Approval is obtained on or prior to 7 August 2020, the initial 10% rate shall be reduced to
6% per annum, with effect retroactively as of the Effective Date; 

  

	 	(b)	 if an Event of Default takes place and is not remedied by the Company in accordance with the applicable
provisions of this Part 1 of Schedule 2, the Tranche 1 Interest Rate shall be increased by 2% per annum with effect from the date of such Event of Default (or, if applicable, the expiry of any cure period applicable thereto) (the “Tranche 1
Default Rate”); and 

  

	 	(c)	 if the Tranche 1 Extension Option is exercised, interest shall cease to be payable on the Tranche 1 Notes from
the date of the relevant Tranche 1 Extension Notice (other than any interest payable at the Tranche 1 Default Rate following an Event of Default, which, for the avoidance of doubt, shall apply at a flat rate of 2% in such circumstances and remain
payable). 

  

	1.2	 Interest shall not be payable on any outstanding Tranche 2 Notes or Tranche 3 Notes other than where an Event
of Default takes place and is not remedied by the Company in accordance with the applicable provisions of this Part 1 of Schedule 2, where interest shall be payable on the Tranche 2 Notes and/or Tranche 3 Notes (as applicable) at a rate of 2% per
annum with effect from the date of such Event of Default (or, if applicable, the expiry of any cure period applicable thereto) (the “Tranche 2 Default Rate” and “Tranche 3 Default Rate”, respectively).

  

	1.3	 Any interest due under paragraphs 1.1 or 1.2 shall be payable on the Redemption Date. 

  
 20 

	1.4	 Interest, if payable, shall accrue daily at the Interest Rate and shall be calculated on the basis of a 365-day year and the actual number of days elapsed from the date of issue of the relevant Notes to the Redemption Date. 

  

	1.5	 If the Company fails to pay redemption monies when due, interest shall accrue on the unpaid amount at the
applicable Default Rate. 

 2. REPAYMENT OF PRINCIPAL 

 

	2.1	 As and when the Notes (or any part of them) are to be redeemed in accordance with paragraph 4 of this Part 1 of
Schedule 2, the Company shall pay the Noteholders the principal amount of the Notes which are to be redeemed, subject to adjustment in accordance with paragraph 4.2 of this Part 2 of Schedule 2. 

 

	2.2	 No prepayment of the principal amount of the Notes or any interest accrued thereon prior to the earlier of the
Maturity Date or, in the event of a Change of Control, the date on which the consideration in respect of such Change of Control is remitted to the holders of Ordinary Shares, shall be permitted without the consent of a Noteholder Majority, and, if
required, the consent of the Senior Lenders pursuant to the terms of the Subordination Deed. 

  

	2.3	 At any time prior to the Tranche 1 Maturity Date, a Qualifying Noteholder may (but shall not be required to)
notify the Company that it wishes to extend the Tranche 1 Maturity Date in respect of that Noteholder’s Tranche 1 Notes to a new date to be specified in such notice provided such date is a Business Day and not later than the date 10 years after
the date of this Instrument (a “Tranche 1 Extension Notice”), and the Company shall accept such extension (the “Tranche 1 Extension Option”), whereupon the Tranche 1 Maturity Date shall be revised accordingly. A
Qualifying Noteholder may only issue a Tranche 1 Extension Notice once and any such Tranche 1 Extension Option must be used in respect of all Tranche 1 Notes held by such Qualifying Noteholder. From the date of such Tranche 1 Extension Notice, other
than amounts accrued prior to delivery of the Tranche 1 Extension Notice, no additional interest shall be payable on the Tranche 1 Notes held by the exercising Qualifying Noteholder (other than any interest which becomes payable at the Tranche 1
Default Rate). 

  

	2.4	 On the date of the Tranche 1 Extension Notice the exercising Qualifying Noteholder shall deliver to the Company
the Tranche 1 Note Certificate in respect of the Tranche 1 Notes which are the subject of such Tranche 1 Extension Notice, and the Company shall, within 5 Business Days’ of the exercise of the Tranche 1 Extension Option, issue to such
Qualifying Noteholder a replacement Tranche 1 Note Certificate bearing the revised Tranche 1 Maturity Date. 

  
 21 

	2.5	 A Qualifying Noteholder who holds both Tranche 1 Notes and Tranche 2 Notes may (but shall not be required) if
they have already served an Extension Notice (or contemporaneously with the service of an Extension Notice), notify the Company that it wishes to extend the Tranche 2 Maturity Date in respect of that Noteholder’s Tranche 2 Notes to the same
date that it has specified as the Tranche 1 Maturity Date pursuant to its Extension Notice for Tranche 1 Notes (such further notice being a “Tranche 2 Extension Notice”), and the Company shall accept such extension (the
“Tranche 2 Extension Option”), whereupon the Tranche 2 Maturity Date shall be revised accordingly. A Qualifying Noteholder may only issue a Tranche 2 Extension Notice once and any such Tranche 2 Extension Option must be used in
respect of all Tranche 2 Notes held by such Qualifying Noteholder. 

  

	2.6	 On the date of the Tranche 2 Extension Notice the exercising Qualifying Noteholder shall deliver to the Company
the Tranche 2 Note Certificate in respect of the Tranche 2 Notes which are the subject of such Tranche 2 Extension Notice, and the Company shall, within 5 Business Days’ of the exercise of the Tranche 2 Extension Option, issue to such
Qualifying Noteholder a replacement Tranche 2 Note Certificate bearing the revised Tranche 2 Maturity Date. 

  

	2.7	 Any Qualifying Noteholder who holds Tranche 3 Notes may (but shall not be required), notify the Company that it
wishes to extend the Tranche 3 Maturity Date in respect of that Qualifying Noteholder’s Tranche 3 Notes to a new date to be specified in such notice provided such date is a Business Day and not later than the date 10 years after the date of
this Instrument (such notice being a “Tranche 3 Extension Notice”). Upon receipt of a Tranche 3 Extension Notice, the Company may reject a Tranche 3 Extension Notice by providing written notice of such rejection to the Noteholder
within 30 Business Days of receipt of such Tranche 3 Extension Notice (whereupon no extension of such Noteholder’s Tranche 3 Notes shall occur). If the Company does not reject a Tranche 3 Extension Notice within such foregoing period, the
Tranche 3 Extension Notice shall be considered accepted (the “Tranche 3 Extension Option”), whereupon the Tranche 3 Maturity Date shall be revised accordingly. A Qualifying Noteholder may only issue a Tranche 3 Extension Notice once
and any such Tranche 3 Extension Option must be used in respect of all Tranche 3 Notes held by such Qualifying Noteholder. 

  
 22 

	2.8	 On the date of the Tranche 3 Extension Notice the exercising Qualifying Noteholder shall deliver to the Company
the Tranche 3 Note Certificate in respect of the Tranche 3 Notes which are the subject of such Tranche 3 Extension Notice. If the Company rejects the Tranche 3 Extension Notice, the Company shall promptly return such Tranche 3 Note Certificate to
the Noteholder. If the Tranche 3 Extension Option is accepted, the Company shall, within 5 Business Days’ of the exercise of the Tranche 3 Extension Option, issue to such Qualifying Noteholder a replacement Tranche 3 Note Certificate bearing
the revised Tranche 3 Maturity Date. 

 3. TIME OF PAYMENT 

Whenever any payment of principal (or otherwise) becomes due on a day which is not a Business Day, payment shall be made on the next following
Business Day. 
 4. REDEMPTION 
  

	4.1	 The Notes then in issue (so far as not converted under Part 2 of this Schedule 2) shall be redeemed at the
principal amount together with interest on the Notes outstanding at the applicable Interest Rate on the earlier of the following dates: 

  

	 	(a)	 the Tranche 1 Maturity Date, Tranche 2 Maturity date or Tranche 3 Maturity date (as applicable); or

  

	 	(b)	 in the event of a Change of Control, the date on which the consideration in respect of such Change of Control
is remitted to the holders of Ordinary Shares; or 

  

	 	(c)	 following the occurrence of an Event of Default and the expiry of any applicable grace period applicable to
such Event of Default as set out in paragraph 5 of this Part 1 of Schedule 2 (the date on which an Event of Default occurs or, if later, the relevant grace period (if any) expires, the “Acceleration Date”), the date specified in the
relevant Redemption Notice; 

 (the “Redemption Date”). 

 

	4.2	 Subject to paragraph 4.12 below, in the event that Shareholder Approval has not been obtained on or before
7 August 2020, in addition to the amounts otherwise payable on the Redemption Date, each Noteholder holding any Tranche 1 Notes shall be entitled to be paid an additional sum on the Redemption Date, the amount of which shall be equal to the
principal amount of the Tranche 1 Notes outstanding on 7 August, 2020 and held by such Noteholder in recognition of such Noteholder not being able to (i) participate in the equity of the Company through conversion of the Tranche 1 Notes,
or (ii) benefit from any Warrants that were intended to be issued to such Tranche 1 Noteholder as part of the Transaction (such sum being the “Uplift Payment”).

  
 23 

	 	
Notwithstanding the foregoing, in the event that Shareholder Approval has not been obtained on or before 7 August 2020, upon conversion of the Notes in accordance with Part 2 of Schedule 2,
the Noteholder shall be entitled to the benefit of the Uplift Payment. In the event that the Shareholder Approval has not been obtained on or before 7 August 2020 and a Noteholder did not attend (either in person or by proxy) any general
meeting of the Company’s members called for the purposes of obtaining the Shareholder Approval and vote in favour of such Shareholder Approval with the entirety of all voting rights available to such Noteholder, such Noteholder shall cease to
be entitled to the benefit of the Uplift Payment in any circumstances. 

  

	4.3	 At any time after 7 August 2020, when (i) at least one Tranche 1 Noteholder is entitled to the Uplift
Payment pursuant to paragraph 4.2 above; (ii) the Closing Price is above the Tranche 1 Conversion Price; and (iii) the Company has authority from its shareholders to allot additional Ordinary Shares, the Company may at its discretion
notify all (but not some) Tranche 1 Noteholders that it wishes to satisfy its obligations in respect of all or any portion of the Uplift Payment by the issuance of further Ordinary Shares pro rata to all Noteholder(s) (such Ordinary Shares being
“Uplift Securities”) (such notice an “Uplift Allocation Notice”). 

  

	4.4	 The amount of the Uplift Payment to be satisfied by the Uplift Securities shall be calculated by: multiplying
(x) being the number of Uplift Securities the Company wishes to issue, by (y) being the Tranche 1 Conversion Price (the “Uplift Reduction Amount”). 

 

	4.5	 The Uplift Allocation Notice served pursuant to paragraph 4.3 above shall specify, at a minimum:

  

	 	(a)	 the number of Uplift Securities the Company proposes to issue; 

 

	 	(b)	 each Tranche 1 Noteholder’s current percentage holding of the aggregate voting rights in the Company; and

  

	 	(c)	 the issue date of the Uplift Securities (which shall in all cases be within 5 Business Days of the date the
Uplift Allocation Notice was served). 

  

	4.6	 In the event that: 

  

	 	(a)	 there is only one Tranche 1 Noteholder, that Noteholder shall be automatically deemed to have subscribed for
the maximum number of Uplift Securities as it is possible to subscribe without the Ownership Limit of that Tranche 1 Noteholder being exceeded; and 

  
 24 

	 	(b)	 if there is more than one Tranche 1 Noteholder, each Tranche 1 Noteholder shall be automatically deemed to have
subscribed (and such subscription shall be deemed satisfied out of each Tranche 1 Noteholder’s entitlement to the Uplift Payment) for such number of Uplift Securities as is determined pro rata to each Tranche 1 Noteholder’s proportionate
entitlement to the Uplift Payment (provided that such amount does not result in the Ownership Limit being exceeded, and if it was to so result, such Tranche 1 Noteholder shall be required to subscribe for the maximum amount of Uplift Securities that
such Tranche 1 Noteholder could receive without being in breach of the Ownership Limit, any excess Uplift Securities would then be allocated to each other Tranche 1 Noteholder (who would be deemed to subscribe for the same) pro rata to their
entitlement to the Uplift Payment until either all Uplift Securities have been allocated amongst all Tranche 1 Noteholders or all Tranche 1 Noteholders have each reached the Ownership Limit), 

and in each case the Company shall issue such Uplift Securities (which shall be credited as fully paid and rank pari passu with Ordinary Shares
of the same class in issue on the Conversion Date) within 5 Business Days of the Uplift Allocation Notice and the applicable Tranche 1 Noteholder’s entitlement to the Uplift Payment shall thereon be reduced by their proportion of the Uplift
Reduction Amount. 
  

	4.7	 At any time when (i) the Company has satisfied the entirety of its obligations in respect of the Uplift
Payment through the issue of Uplift Securities pursuant to paragraphs 4.3 to 4.6 above (or the Uplift Payment has otherwise been discharged or waived); (ii) the Closing Price is above the Tranche 1 Conversion Price, and (iii) the Company has
authority from its shareholders to allot additional Ordinary Shares; the Company may notify all (but not some) of the Tranche 1 Noteholders that it wishes to satisfy its obligations in respect of an amount of interest and/or principal under the
Tranche 1 Notes by the issuance of further Ordinary Shares pro rata to all Tranche 1 Noteholders (such Ordinary Shares being “Pay Down Securities”) (such notice a “Pay Down Notice” and such process a
“Pay Down Issue”). 

  

	4.8	 The amount of principal and interest in respect of the Tranche 1 Notes to be satisfied by the issue of Pay Down
Securities shall be calculated by: multiplying (x) being the number of Pay Down Securities the Company wishes to issue, by (y) being the Tranche 1 Conversion Price (the “Pay Down Reduction Amount”). 

 

	4.9	 The Pay Down Notice served on each Tranche 1 Noteholder pursuant to paragraph 4.7 above shall specify, at a
minimum: 

  

	 	(a)	 the number of Pay Down Securities the Company proposes to issue; 

  
 25 

	 	(b)	 each Tranche 1 Noteholder’s current percentage holding of the aggregate voting rights in the Company; and

  

	 	(c)	 the issue date of the Pay Down Securities (which shall in all cases be within 5 Business Days of the date the
Pay Down Notice was served). 

  

	4.10	 In the event that: 

  

	 	(a)	 there is only one Tranche 1 Noteholder, that Tranche 1 Noteholder shall be automatically deemed to have
subscribed for the maximum number of Pay Down Securities as it is possible to subscribe without the Ownership Limit of that Tranche 1 Noteholder being exceeded; and 

 

	 	(b)	 there is more than one Tranche 1 Noteholder, each Tranche 1 Noteholder shall be automatically deemed to have
subscribed (and such subscription shall be deemed satisfied out of each Tranche 1 Noteholder’s entitlement to principal and/or interest under the Notes) for the maximum amount of Pay Down Securities that such Tranche 1 Noteholder could receive
without being in breach of the Ownership Limit, any excess Pay Down Securities would then be allocated to each other Tranche 1 Noteholder (who would be deemed to subscribe for the same) pro rata to their entitlement outstanding interest and/or
principal under the Tranche 1 Notes until either all Pay Down Securities have been allocated amongst all Tranche 1 Noteholders or all Tranche 1 Noteholders have each reached the Ownership Limit, 

and in each case the Company shall issue such Pay Down Securities (which shall be credited as fully paid and rank pari passu with Ordinary
Shares of the same class in issue on the Conversion Date) within 5 Business Days of the Pay Down Notice and the applicable Tranche 1 Noteholder’s entitlement to principal amount and/or interest shall thereon be reduced by their proportion of
the Pay Down Reduction Amount. 
  

	4.11	 At any time when (i) the Company has satisfied all principal and interest outstanding in respect of the
Tranche 1 Notes by the issue of Pay Down Securities; (ii) the Closing Price is above the Tranche 2 Conversion Price, and (iii) the Company has authority from its shareholders to allot additional Ordinary Shares, the Company may serve a Pay
Down Notice on the Tranche 2 Noteholders, notifying them it wishes to satisfy its obligations in respect of any interest and/or principal amount under the Tranche 2 Notes by way of a Pay Down Issue, and the provisions of the foregoing paragraphs 4.7
to 4.10 above shall apply mutatis mutandis in respect of any such Pay Down Issue in respect of the Tranche 2 Notes (and in such circumstances, for the avoidance of doubt, (y) for the purposes of calculating the Pay Down Reduction Amount
pursuant to paragraph 4.8 shall be the Tranche 2 Conversion price). At any 

  
 26 

	 	
time when (i) the Company has satisfied all principal and interest outstanding in respect of the Tranche 2 Notes by the issue of Pay Down Securities; and (ii) the Company has authority
from its shareholders to allot additional Ordinary Shares, the Company may serve a Pay Down Notice on the Tranche 3 Noteholders, notifying them it wishes to satisfy its obligations in respect of any interest and/or principal amount under the Tranche
3 Notes by way of a Pay Down Issue, and the provisions of the foregoing paragraphs 4.7 to 4.10 above shall apply mutatis mutandis in respect of any such Pay Down Issue in respect of the Tranche 3 Notes (and in such circumstances, for the
avoidance of doubt, (y) for the purposes of calculating the Pay Down Reduction Amount in respect of Tranche 3 Notes pursuant to paragraph 4.8 shall be the weighted average of the Closing Price on the 5 Business Days immediately prior to the
date on which the Pay Down Notice is served in respect of such Tranche 3 Notes). 

  

	4.12	 In the event that (i) a Change of Control occurs on or prior to 7 August 2020 and Shareholder
Approval has not been obtained on or prior to the date of such Change of Control; or (ii) Shareholder Approval has not been obtained on or before 7 August 2020 and following 7 August 2020 but prior to the Tranche 1 Maturity Date, the
Company undergoes a Change of Control; in either case the Company shall pay or cause to be paid, within 3 Business Days of the date on which consideration in respect of such Change of Control is remitted to the holders of Ordinary Shares, to each
Noteholder, in addition to the sum payable pursuant to paragraph 4.1(b) of this Part 1 of Schedule 2, an additional sum, the amount of which shall be equal to the value of (a) minus ((b), (c) and (d)), where:  

  

	 	(a)	 is the pro rata amount of consideration which would have been received by such Noteholder in consideration for
their Ordinary Shares and Warrants (plus, to the extent they exist, any Tranche 3 Notes held by such Noteholder but without double-counting in respect of the value of any Warrants that were converted into such Tranche 3 Notes by the Noteholder) on
the Change of Control if that Shareholder Approval had been obtained on or prior to 7 August 2020 and as a result (i) all the Warrants held by such Noteholder as of the date of the Change of Control had become fully exercisable on or prior
to 7 August 2020; and (ii) all Tranche 1 Notes held by such Noteholder as of the date of the Change of Control had automatically converted into Ordinary Shares upon receipt of the Shareholder Approval; and 

 

	 	(b)	 is the aggregate of the principal amount of such Noteholder’s Tranche 1 Notes, together with any accrued
but unpaid interest thereon held by such Noteholder immediately prior to the Notes being redeemed pursuant to paragraph 4.1(b) of this Part 1 of Schedule 2; and 

  
 27 

	 	(c)	 is the pro rata amount of consideration actually received or due to be received by such Noteholder pursuant to
Section 2.10 of the Warrant Instrument in respect of Warrants held by such Noteholder as of the date of such Change of Control; and 

  

	 	(d)	 is the pro rata amount of consideration actually received or due to be received by such Noteholder (whether on
or prior to any Change of Control) in respect of any Ordinary Shares received by such Noteholder in exchange for Tranche 1 Notes pursuant to paragraphs 4.7 through 4.11 of this Schedule 2; 

(such sum being the “Change of Control Payment”). For the avoidance of doubt, if any Noteholder becomes entitled to be paid
the Change of Control Payment, such Noteholder shall cease to be entitled to the Uplift Payment pursuant to paragraph 4.2. 
  

	4.13	 Subject to paragraph 6 if the Noteholder Majority wishes to redeem the Notes following an Acceleration Date,
the Noteholder Majority shall give the Company written notice of the intention to exercise the right to redeem in accordance with the provisions of paragraph 4.1(b), together with confirmation on the date for such redemption (provided that such date
may not occur earlier than the date falling 20 Business Days after the relevant Acceleration Date), conditional always on any such Event of Default not being remedied in the case of paragraph 4.1(c) (“Redemption Notice”).

  

	4.14	 A Redemption Notice shall (unless the Company agrees otherwise) be irrevocable. 

 

	4.15	 For as long as the Subordination Agreement is in force, notwithstanding any of the provisions of paragraph 5 of
this Part 1 of Schedule 2, the Notes cannot be redeemed or repaid following an Acceleration Date until the applicable restriction in the Subordination Agreement has expired or been waived by the Senior Lenders; provided that such delay in payment
shall constitute an additional Event of Default hereunder. 

  

	4.16	 On the Redemption Date, the Company shall repay to all Noteholders the principal amount of the Notes so
redeemed, together with interest on such Notes outstanding at the applicable Interest Rate, and, if applicable, the Uplift Payment payable pursuant to paragraph 4.2. 

 

	4.17	 If, on redemption of a Note, a Noteholder fails to deliver the Certificate for it, or an indemnity in
accordance with these Conditions or to accept payment of moneys due to him, the Company shall pay the moneys due to him into bank account which payment shall discharge the Company from all further obligations in respect of the Note.

  
 28 

	4.18	 The Company shall cancel any Notes repaid, redeemed or purchased and shall not reissue them.

 5. EVENTS OF DEFAULT 

Subject to paragraphs 4.15 and 6.3 of this part 1 of Schedule 2, the Notes then in issue shall become immediately redeemable at the principal
amount, together with interest on the Notes outstanding, and interest shall become payable at the applicable Default Rate, if: 
  

	 	(a)	 the Company fails to pay any interest or principal in respect of the Notes on the relevant due date;

  

	 	(b)	 the Company fails to comply in any material respect with the covenants of the Notes or any of the Conditions
and does not remedy such failure within 30 calendar days; 

  

	 	(c)	 any judgment, arbitration award, order or decree for the payment of money and that is no longer subject to an
appeal process in an amount, individually or in the aggregate of at least £1,000,000 (or its equivalent in other currencies) is rendered against any Group Company and not cured or withdrawn within 30 calendar days of such judgment, award,
order or decree; 

  

	 	(d)	 a Group Company incurs an Event of Default (as such term is defined in the Novartis Loan Note) pursuant to the
terms of the Novartis Loan Note and such Event of Default is not remedied within the greater of (i) any applicable grace period pursuant to the terms of the Novartis Loan Note; and (ii) 30 days from the occurrence of such Event of Default; and
results in the acceleration by Novartis of any indebtedness owed pursuant to the terms of the Novartis Loan Note; 

  

	 	(e)	 a Group Company incurs an event of default (howsoever defined) in respect of any indebtedness in a principal
amount in excess of £1,000,000 and fails to cure (or have waived) such event of default within 30 calendar days of such event of default; 

  

	 	(f)	 a Group Company commits a material breach of any material contract to which such Group Company is a party and
fails to cure (or have waived) such material breach within 30 calendar days of such event of default 

  
 29 

	 	(g)	 an encumbrancor takes possession or a receiver is appointed of the whole or the major part of the assets or
undertaking of a Group Company or if distress, execution or other legal process is levied or enforced or sued out on or against the whole or the major part of the assets of any Group Company and is not discharged, paid out, withdrawn or removed
within 30 calendar days; 

  

	 	(h)	 a Group Company is the subject of any proceeding in bankruptcy or for their dissolution, liquidation, winding-up, composition or other relief under any applicable insolvency or bankruptcy laws, whether voluntary or involuntary and, if involuntary, is not dismissed within 60 calendar days of filing;

  

	 	(i)	 an administration order is made in relation to any Group Company; or 

 

	 	(j)	 an order is made, or an effective resolution is passed, for the
winding-up, liquidation, administration or dissolution of any Group Company (except for the purpose of reorganisation or amalgamation of the Group Companies). 

6. ACTION FOLLOWING EVENT OF DEFAULT 

 

	6.1	 The Company shall give written notice to the Noteholders as soon as reasonably practicable following the
Company becoming aware of the occurrence of an event specified in paragraph 5, giving reasonable details of that event. 

  

	6.2	 Following receipt of the notice provided pursuant to paragraph 6.1 above, and, if applicable, the expiry of any
cure period provided for such Event of Default, the Noteholders shall have a period of 10 Business Days in which they may exercise their right to waive such Event of Default by Noteholder Majority Consent. 

 

	6.3	 If the Noteholder Majority waives any Event of Default then the Notes shall cease to be immediately redeemable,
and no further interest shall accrue at the applicable Default Rate in respect of such Event of Default (for the avoidance of doubt, notwithstanding such waiver, the Noteholders’ shall remain entitled to any interest accrued at the applicable
Default Rate between the date of the Event of Default and the date of waiver by the Noteholder Majority). 

  
 30 

 7. TAXATION 
  

	7.1	 All payments to be made by the Company to a Noteholder under the Note shall be made free and clear of and
without any deduction or withholding for or on account of tax (a “Tax Deduction”), unless a Tax Deduction is required by law. If a Tax Deduction is required by law, the amount of the payment due from the Company shall be increased
to an amount which (after making any Tax Deduction) leaves an amount equal to the payment which would have been due if no Tax Deduction had been required. 

  

	7.2	 Each Noteholder shall, in consultation with the Company, take all reasonable steps to mitigate any
circumstances which arise and which would result in any amount becoming payable under or pursuant to paragraph 7.1 above, including (but not limited to) transferring its rights and obligations under this Instrument and the Notes to another affiliate
of such Noteholder and permitting the listing of the Notes on a recognised stock exchange. 

  

	7.3	 Paragraph 7.2 above does not in any way limit the obligations of the Company under this Instrument.

  

	7.4	 Each Noteholder and the Company shall co-operate in completing any
procedural formalities necessary for the Company to obtain authorisation to make that payment without a Tax Deduction including using commercially reasonable endeavours to procure that investors in such Noteholder complete such procedural
formalities. 

  

	7.5	 If the Company makes an increased payment under paragraph 7.1 (a “Tax Payment”) and the
relevant Noteholder shall (and shall use commercially reasonable endeavours to procure that investors will) co-operate with the Company to take any reasonable steps to: 

 

	 	(a)	 investigate the availability of any credit against, relief or remission for, or repayment of any Tax is
attributable to that increased payment of which that Tax Payment forms part, to that Tax Payment or to a Tax Deduction in consequence of which that Tax Payment was required (“Tax Credit”); and 

 

	 	(b)	 obtain and/or utilise that Tax Credit, 

and the Noteholder shall (and shall use commercially reasonable endeavours to procure that investors will) pay an amount to the Company which
that Noteholder (or investors as applicable) determines (acting reasonably) will leave it (after that payment) in the same after-Tax position as it would have been in had some or all of the Tax Payment not
been required to be made by the Company. 

  
 31 

 Part 2. Conversion 

1. CONVERSION 
  

	1.1	 Without prejudice to the provisions paragraphs 4.3 to 4.11 of Schedule 2 Part 1, the Notes shall not be capable
of conversion prior to Shareholder Approval having been obtained and no Noteholder shall serve any Conversion Notice prior to such time. 

  

	1.2	 Subject to paragraph 1.1 and paragraph 1.4 of this Part 2 of Schedule 2, all outstanding Tranche 1 Notes shall
automatically convert into a number of fully paid Ordinary Shares upon Shareholder Approval being obtained, determined by dividing (x) the sum of (i) the outstanding principal amount, plus (ii) all accrued and unpaid interest thereon,
plus (iii) any amount of the Uplift Payment (to the extent the same is applicable pursuant to the terms of this Instrument) which has become due and payable in accordance with paragraph 4.2 and has not already been paid or satisfied by the
issue of Uplift Securities (or otherwise), by (y) the Tranche 1 Conversion Price then in effect; provided that (but subject to paragraph 1.4 of this Part 2 of Schedule 2 below) following such conversion, no individual Noteholder shall
hold more than 9.99% of the aggregate voting rights in the Company (on a fully diluted basis) (the “Ownership Limit”). In the event that Conversion of any Noteholder’s holding of Notes would result in such Noteholder exceeding
the Ownership Limit, the principal amount of the Notes held by such Noteholder which shall convert shall be the greatest amount possible without that Noteholder exceeding such Ownership Limit and the remaining principal balance on such Notes shall
remain outstanding. 

  

	1.3	 Subject to paragraphs 1.1, 1.2 and 1.4 of this Part 2 of Schedule 2: 

 

	 	(a)	 each Noteholder holding Tranche 1 Notes shall have the right, at any time prior to the Tranche 1 Maturity Date,
to serve a Conversion Notice on the Company to convert all or, if the Ownership Limit applies, part of such Noteholder’s Tranche 1 Notes then outstanding (together with any accrued but unpaid interest thereon) into fully paid Ordinary Shares at
the Tranche 1 Conversion Price per Share; and 

  

	 	(b)	 each Noteholder holding Tranche 2 Notes shall have the right, at any time prior to the Tranche 2 Maturity Date
applicable to such Noteholder’s Tranche 2 Notes, to serve a Conversion Notice on the Company to convert all or, if the Ownership Limit applies, part of such Noteholder’s Tranche 2 Notes then outstanding (together with any accrued but
unpaid interest thereon) into fully paid Ordinary Shares at the Tranche 2 Conversion Price per Share, 

  
 32 

 provided that, in each of the foregoing cases, at the time of the Conversion Notice, either
(i) such Noteholder’s aggregate voting rights in the Company is not in excess of the Ownership Limit and would not become in excess of the Ownership Limit as a result of the conversion contemplated by such Conversion Notice; or
(ii) such Noteholder has waived the application of the Ownership Limit in accordance with paragraph 1.4 of this Part 2 of Schedule 2. 
  

	1.4	 Notwithstanding the foregoing, a Noteholder may increase or decrease the Ownership Limit to any other
percentage, by written notice to the Company; provided, that the Noteholder may not decrease the limitation prior to August 8, 2020; provided further that a waiver by the Noteholder of the Ownership Limit or a request to increase the Ownership
Limit requires not less than 61 days prior written notice to the Company (with such waiver of the Ownership Limit or request to increase the Ownership Limit taking effect only upon the expiration of such 61 day notice period and applying only to the
Noteholder and not to any other holder of Notes) and that such Ownership Limit shall never be increased above 19.99%. 

  

	1.5	 The Conversion Notice shall set out, at a minimum: 

 

	 	(a)	 the principal amount of the Tranche 1 Notes and/or Tranche 2 Notes to be converted; 

 

	 	(b)	 the amount (if any) of accrued but unpaid interest on such principal amount which is to be converted;

  

	 	(c)	 the Noteholder’s current percentage holding of the aggregate voting rights in the Company;

  

	 	(d)	 the Conversion Date; and 

 

	 	(e)	 any conditions (if any) applicable to the conversion and agreed in writing in advance by the Company.

  

	1.6	 The Service of a Conversion Notice shall be irrevocable and binding on the Noteholder. 

2. PROCEDURES ON CONVERSION 
  

	2.1	 Subject to paragraph 1.1 of this Part 2 of Schedule 2, on the Conversion Date, the Directors shall convert the
principal amount of the Notes and accrued but unpaid interest and any amount of the Uplift Payment (to the extent the same is applicable pursuant to the terms of this Instrument) which has become due and payable in accordance with paragraph 4.2 and
has not already been paid or satisfied by the issue 

  
 33 

	 	
of Uplift Securities (or otherwise), into such number of new fully paid Ordinary Shares at the applicable Tranche 1 Conversion Price or Tranche 2 Conversion Price (as the case may be) as set out
in paragraph 1 of this Part 2 of Schedule 2 in accordance with the following provisions of paragraph 2.2 to paragraph 2.5 (inclusive). 

  

	2.2	 Conversion of the Notes shall be effected by the Company redeeming the relevant Notes on the Conversion Date.
Each Noteholder whose Notes are being converted shall be deemed to irrevocably authorise and instruct the Company to apply the redemption moneys payable to that Noteholder in subscribing for Ordinary Shares on conversion of the Notes.

  

	2.3	 Ordinary Shares arising on conversion of the Notes (and any applicable accrued but unpaid interest) shall be
issued and allotted by the Company on the Conversion Date and the certificates (if physical certificates are requested by such Noteholder) for such Ordinary Shares shall be despatched to the persons entitled to them at their own risk.

  

	2.4	 The Ordinary Shares arising on conversion of the Notes shall be credited as fully paid and rank pari passu with
Ordinary Shares of the same class in issue on the Conversion Date and shall carry the right to receive all dividends and other distributions declared, made or paid after the Conversion Date. 

 

	2.5	 The entitlement of each Noteholder to a fraction of a Share shall be rounded down to the nearest whole number
of Ordinary Shares which result from the conversion of the Notes. 

  

	2.6	 In the event that the Ordinary Shares in issue on the Conversion Date are traded on the AIM Market operated by
London Stock Exchange plc, the Company shall use its reasonable best endeavours to ensure that the Ordinary Shares to be issued upon the conversion of the relevant Notes are admitted to trading on the AIM Market as soon as reasonably practicable
following the Conversion Date. In addition, as soon as practicable following the general meeting at which the Company seeks to obtain Shareholder Approval, the Company shall make or cause to be made an application to AIM for a block listing (up to
the maximum amount available to the Company under AIM block listing rules and in consideration of block listings registered at the time of this Agreement) or otherwise to admit upon Admission or as soon as permitted by AIM thereafter the maximum
number of Ordinary Shares that may be acquired upon conversion of the Notes. Further, the Company shall list the Ordinary Shares issuable upon conversion of the Notes on each other securities exchange on which the Ordinary Shares are then listed
and/or admitted to trading. 

  
 34 

 Part 3. Transfer provisions, Undertakings and other matters 

 

	1.	 The Company shall recognise the registered holder of any Notes as the absolute owner of them and shall not
(except as provided by statute or as ordered by a court of competent jurisdiction) be bound to take notice or see to the execution of any trust (whether express, implied or constructive) to which any Note may be subject. The Company shall not
(except as provided by statute or as ordered by a court of competent jurisdiction) be bound to enter any notice of any trust (whether express, implied or constructive) on the register in respect of any of the Notes. 

The Notes are freely transferable in accordance with this Part 3 of Schedule 2 in integral multiples of £1 by instrument in writing in
the usual common form (or in such other form as the Directors may approve) and such instrument need not be under seal. Additionally and, notwithstanding any other provision of this Instrument, for so long as the Subordination Agreement remains in
force and effect, no transfer of the Notes may take place unless the transferee in respect of those Notes being transferred is either a party to the Subordination Agreement or has entered into a deed of adherence to be bound by the terms of such
Subordination Agreement, or has otherwise entered into subordination arrangements with the Senior Lenders in writing or the requirement to enter into subordination arrangements with the Senior Lenders has been otherwise waived by the Senior Lenders
in writing in advance of such intended transfer of the Notes; any attempt to transfer Notes in breach of the foregoing provisions is void ab initio. 
  

	2.	 Each instrument of transfer shall be signed by the transferor, and the transferor shall be deemed to remain the
owner of the Notes to be transferred until the name of the transferee is entered in the register in respect of such Notes. 

  

	3.	 Each instrument of transfer shall be sent to, or left for registration at, the registered office of the Company
for the time being, and shall be accompanied by the Certificate(s) for the Notes to be transferred and any other evidence that the Company may require to prove the title of the transferor or his right to transfer the Notes (and, if such instrument
is executed by some other person on his behalf, the authority of that person to do so). All instruments of transfer that are registered may be retained by the Company. 

 

	4.	 No transfer of Notes shall be registered in respect of which a Redemption Notice, an Uplift Allocation Notice,
a Pay Down Notice or Conversion Notice has been given. 

  
 35 

	5.	 The Company undertakes that, while an aggregate principal amount of Notes greater than £10,000,000
remains in issue, it shall not, without prior Noteholder Majority Consent: 

  

	 	(a)	 sell, transfer, lease, licence or otherwise dispose of any material asset or business of any Group Company
(including the sale, transfer or other disposition of a Group Company’s rights to a third party), other than in the ordinary course of business; 

  

	 	(b)	 carry out any merger, reorganisation, restructuring or sale of all or substantially all of the assets and/or
business of any Group Company; 

  

	 	(c)	 effect the liquidation, dissolution, or winding of any Group Company, or the cessation of all or substantially
all of the business of any Group Company; 

  

	 	(d)	 authorise any debt security (the incurrence, or extension of any credit or loan guarantee in respect of any
loan or grant of credit exceeding £800,640.512(save that, for the avoidance of doubt, no Noteholder Majority Consent shall be required for (i) any refinancing, in whole or in part, of any Existing Indebtedness; or (ii) the
subscription by any Qualifying Noteholder (and the issuance by the Company) for any Tranche 2 Notes pursuant to the Securities Purchase Agreement); 

  

	 	(e)	 discontinue any existing line of business of any Group Company or enter into any new line of line of business
by any Group Company; or 

  

	 	(f)	 issue any securities senior to the Ordinary Shares with respect to voting rights, dividends, conversion rights,
redemption rights, liquidation preference or otherwise. 

  

	6.	 Payment of the principal amount and all accrued interest on the Notes may be made by cheque made payable to, or
by bank transfer to an account nominated for the purpose to the Company in writing by, the registered holder or, in the case of joint registered holders, to the one who is first-named on the register, or to such person or persons as the registered
holder or all the joint registered holders may in writing direct and sent to the registered holder or in the case of joint registered holders to that one of the joint registered holders who is first-named on the register or to such address as the
registered holder or joint registered holders may in writing direct. Cheques may be sent through the post at the risk of the registered holder or jointly registered holders and payment of any such cheque by the bankers on whom it is drawn, or a bank
transfer to the relevant account, shall be good discharge to the Company. 

  
 36 

	7.	 If more than one person is entered in the register as joint holders of any Notes then, without prejudice to
paragraph 5 of this Part 3 of Schedule 2, the receipt of any one of such holders for any moneys payable on or in respect of the Notes shall be as effective a discharge to the Company or other person making the payment as if the person signing such
receipt were the sole registered holder of such Notes. 

  

	8.	 If any Certificate is worn out or defaced then, on production of it to the Directors, they may cancel it and
may issue a fresh Certificate in lieu. If any Certificate is lost or destroyed it may be replaced on such terms (if any) as to evidence and indemnity as the Company may reasonably require. An entry recording the issue of the new Certificate and
indemnity (if any) shall be made in the register. No fee shall be charged for the registration of any transfer or for the registration of any probate, letters of administration, certificate of marriage or death, power of attorney or other documents
relating to or effecting title to any Notes. 

  

	9.	 Any notice or other document required to be given under this Instrument shall be in writing and may be given to
or served on any Noteholder by sending it by first-class post in a prepaid envelope addressed to such Noteholder at his registered address. In the case of joint Noteholders, a notice given to, or document served on, the Noteholder whose name stands
first in the register in respect of such Notes shall be sufficient notice to, or service on, all the joint holders. Any such notice sent or document served by first-class post shall be deemed to have been given or served 48 hours or 96 hours in the
case of a notice or document sent to an address for a Noteholder not in the United Kingdom after the time when it is posted and in proving such notice or service, it shall be sufficient to prove that the envelope containing the notice or document
was properly addressed, stamped and posted. 

  

	10.	 Any notice or other document delivered or sent by post to, or left at, the registered address of any Noteholder
in pursuance of these provisions shall, notwithstanding that such Noteholder is then dead or bankrupt or in liquidation, and whether or not the Company has notice of his death or bankruptcy or liquidation, be deemed to have been duly served or
delivered in respect of any Notes registered in the name of such Noteholder as sole or first-named joint holder unless his name shall at the time of the service of the notice or document have been removed from the register as the holder of the
Notes, and such service shall for all purposes be deemed sufficient service of such notice or document on all persons interested (whether jointly with or as claiming through or under him) in the Notes. 

  
 37 

	11.	 A copy of this Instrument shall be kept at the Company’s registered office. A Noteholder (and any person
authorised by a Noteholder) may inspect that copy of the Instrument at all reasonable times during office hours. 

  

	12.	 Each Noteholder by subscribing for and/or holding any Notes pursuant to the terms of this Instrument expressly
and irrevocably agrees that the Group Companies may refinance all or any part of either the Senior Loan or the Novartis Loan Note (either with the existing creditors thereof or with third party creditors) and that, such refinanced loan shall for all
purposes under this Instrument be treated, mutatis mutandis ̧ as the Senior Loan or the Novartis Loan Note (as the case may be) and benefit from any protections, provisions, exemptions or other terms hereof, without requiring the consent
of any Noteholder; provided, that no such refinancing or amendment of the Senior Loan which increases the amount of the principal sum of the Senior Loan owing from time to time above £14 million, or extends the Final Repayment Date for
the Senior Loan beyond 1 March 2022, shall be effective unless otherwise approved by the Noteholder Majority; provided, further, that no such consent or agreement shall be required from any Noteholder Majority from or after the time when
Shareholder Approval has been obtained. For the avoidance of doubt, if any such refinancing takes place, any lenders thereunder shall be treated as the “Senior Lenders” for the purposes of this Instrument. The Company shall as soon as
reasonably practicable after the occurrence of any such refinancing, provide notice of the same to the Noteholders. 

  

	13.	 If the Company, whilst any Notes are outstanding, shall effect a subdivision of its Ordinary Shares, the
Tranche 1 Conversion Price and Tranche 2 Conversion Price (if any) then in effect immediately before that subdivision shall be proportionately decreased. If the Company, whilst any Notes are outstanding, shall combine its Ordinary Shares, the
Tranche 1 Conversion Price and Tranche 2 Conversion Price then in effect immediately before the combination shall be proportionately increased. 

  

	14.	 If the Company, whilst any Notes are outstanding, shall make or issue, or fix a record date for the
determination of holders of its Ordinary Shares entitled to receive a dividend or other distribution to the shareholders from the fund for invested unrestricted equity payable in Ordinary Shares in the Company, then and in each such event the
Tranche 1 Conversion Price and Tranche 2 Conversion Price then in effect immediately before such event shall be decreased as of the time of such issuance or, in the event such a record date shall have been fixed, as of the close of business on such
record date, by multiplying the Tranche 1 Conversion Price or Tranche 2 Conversion Price, as applicable, then in effect by a fraction: 

  
 38 

	 	(a)	 the numerator of which shall be the total number of Ordinary Shares outstanding immediately prior to the time
of such issuance or the close of business on such record date, and 

  

	 	(b)	 the denominator of which shall be the total number of Ordinary Shares outstanding immediately prior to the time
of such issuance or the close of business on such record date plus the number of Ordinary Shares issuable in payment of such dividend or distribution; 

provided, however, that if such record date shall have been fixed and such dividend is not fully paid or if such distribution is not fully made
on the date fixed therefor, the Tranche 1 Conversion Price and Tranche 2 Conversion Price shall be recomputed accordingly as of the close of business on such date and thereafter the Tranche 1 Conversion Price and Tranche 2 Conversion Price shall be
adjusted pursuant to this paragraph as of the time of actual payment of such dividends or distributions, if any. 
  

	15.	 When any adjustment is required to be made in the Tranche 1 Conversion Price or Tranche 2 Conversion Price
pursuant to paragraph 14 or 15, the number of Ordinary Shares issuable upon conversion of a Note shall be calculated by reference to the revised Tranche 1 Conversion Price or Tranche 2 Conversion price following the adjustment made by paragraph 14
or 15. 

  

	16.	 If the Company, whilst any Notes are outstanding, shall: (i) pay or declare a dividend payable to all
shareholders other than in Ordinary Shares (e.g. in cash or assets other than Ordinary Shares in the Company); or (ii) make any distribution of share capital (including share premium account and capital redemption legal reserve), then and in
each such event the Tranche 1 Conversion Price and Tranche 2 Conversion Price then in effect immediately before such event shall be decreased as of such event by multiplying the Tranche 1 Conversion Price or Tranche 2 Conversion Price, as
applicable, then in effect by a fraction: 

  

	 	(a)	 the numerator of which shall be equal to (i) the Closing Price on the day immediately prior to the date
when such event was first published (or if there is no such price, the fair market value of one ordinary share of the Company as of such date as determined in good faith by the Directors) minus (ii) the amount per issued share of such dividend
or distribution; and 

  

	 	(b)	 the denominator of which shall be the Closing Price on the day immediately prior to the date when such event
was first published (or if there is no such price, the fair market value of one ordinary share of the Company as of such date as determined in good faith by the Directors). 

  
 39 

 In the event that the application of the above fraction would result in an increase in the
Conversion Price, then no adjustment shall be made hereunder. If the Company distributes assets other than cash, the amount per outstanding share of the distribution shall be calculated by reference to the fair market value of the assets distributed
as determined in good faith by the Directors. 
 “Closing Price” for purposes of this paragraph means: the most recently
reported closing price of the Ordinary Shares on AIM. 
  

	17.	 If, prior to the Maturity Date, there shall occur any reorganization, recapitalization, reclassification,
consolidation, merger or demerger involving the Company in which the Company’s Ordinary Shares are converted into or exchanged for securities, cash or other property (other than a transaction covered by paragraphs 14 or 15) (collectively, a
“Reorganization”), then, following such Reorganization, the Noteholders shall receive upon conversion the kind and amount of securities, cash or other property, if any, which the Noteholders would have been entitled to receive
pursuant to such Reorganization if such conversion had taken place immediately prior to such Reorganization. Appropriate adjustment (as determined in good faith by the Directors) shall be made in the application of the provisions set forth herein
with respect to the rights and interests thereafter of the Noteholder, to the end that the provisions set forth in this Instrument (including provisions with respect to changes in and other adjustments of the Tranche 1 Conversion Price and/or
Tranche 2 Conversion Price (as applicable) and the number of Ordinary Shares issuable upon conversion of the Notes) shall thereafter be applicable, as nearly as reasonably may be, in relation to any securities, cash or other property thereafter
deliverable upon the conversion of the Notes. 

  
 40 

 Schedule 3 Meetings of the Noteholders 

 

	1.	 The Company may at any time convene a meeting of Noteholders. In addition, the Company shall at the written
request of the holders of not less than one-quarter (25%) in nominal amount of the outstanding Notes convene a meeting of the Noteholders. Any meeting shall be held at such place as the Company may designate.

  

	2.	 At least 14 days’ notice (exclusive of the day on which the notice is served or deemed to be served and of
the day for which notice is given) of every meeting shall be given to the Noteholders. The notice shall specify the place, day and time of the meeting and the general nature of the business to be transacted, but it shall not be necessary (except in
the case of a Special Resolution) to specify in the notice the terms of any resolution to be proposed. The accidental omission to give notice to, or the non-receipt of notice by, any of the Noteholders shall
not invalidate the proceedings at any meeting. A meeting of the Noteholders shall, despite being called at shorter notice than specified above, be deemed to have been duly called if it is agreed in writing by all of the Noteholders.

  

	3.	 At any meeting the quorum shall be two or more Noteholders holding, or representing by proxy, at least 50.1% in
nominal principal amount of the outstanding Notes. No business (other than choosing a Chairman) shall be transacted at any meeting unless the requisite quorum is present. 

 

	4.	 If a quorum is not present, within half an hour from the time appointed for the meeting, the meeting shall be
dissolved if it was convened on the requisition of Noteholders. In any other case, it shall stand adjourned to such day and time (at least 14 days later, but not more than 28 days later) and to such place as may be appointed by the Chairman. At such
adjourned meeting, two Noteholders present in person (or by proxy) and entitled to vote shall constitute a quorum (whatever the nominal amount of the Notes held by them). At least 14 days’ notice of any adjourned meeting of Noteholders shall be
given (in the same manner mutatis mutandis as for an original meeting). That notice shall state that two Noteholders present in person (or by proxy) at the adjourned meeting (whatever the nominal amount of Notes held by them) shall form a quorum.

  

	5.	 A person (who may but need not be a Noteholder) nominated by the Company shall be entitled to take the chair at
every such meeting but, if no such person is nominated or if the person nominated is not be present at the meeting within five minutes after 

  
 41 

	 	
the time appointed for holding the meeting, the Noteholders present shall choose one of their number to be Chairman. Any Director or officer of, any Secretary of, and the solicitors to, the
Company and any other person authorised in that behalf by the Company may attend at any such meeting. 

  

	6.	 Each question submitted to a meeting of Noteholders shall, unless a poll is demanded, be decided by a show of
hands. 

  

	7.	 At any meeting of Noteholders unless a poll is demanded by the Chairman or by one or more Noteholders present
in person or by proxy and holding or representing in the aggregate not less than one-twentieth in nominal amount of the outstanding Notes (before or on the declaration of the result of the show of hands), a
declaration by the Chairman that a resolution has been carried by the requisite majority, lost or not carried by the requisite majority shall be conclusive evidence of the fact, without proof of the number or proportion of the votes recorded in
favour of or against such resolution. 

  

	8.	 If a poll is duly demanded, it shall be taken in such manner and (subject as set out below) either at once or
after an adjournment as the Chairman directs. The result of the poll shall be deemed to be the resolution of the meeting at which the poll was demanded. The demand for a poll shall not prevent the meeting from continuing for the transaction of any
business other than the question on which the poll has been demanded. The demand for a poll may be withdrawn. 

  

	9.	 If there is an equality of votes, whether on a show of hands or on a poll, the Chairman of the meeting shall
not be entitled to a casting vote in addition to the vote(s) (if any) to which he may be entitled as a Noteholder or as a proxy. 

  

	10.	 The Chairman may, with the consent of (and shall if so directed by) any meeting at which a quorum is present,
adjourn the meeting from time to time and from place to place, but no business shall be transacted at any adjourned meeting except business that might lawfully have been transacted at the meeting from which the adjournment took place.

  

	11.	 Any poll demanded at any meeting on the election of a Chairman, or on any question of adjournment, shall be
taken at the meeting without adjournment. 

  
 42 

	12.	 On a show of hands, each Noteholder who is an individual and is present in person or (being a corporation) is
present by its duly authorised representative or by one of its officers as its proxy, shall have one vote. On a poll, each Noteholder present in person or by proxy, shall have one vote for every £1 nominal principal amount of Notes held by him
and a person entitled to more than one vote need not (if he votes) use all his votes or cast all the votes he uses in the same way. 

  

	13.	 In the case of joint registered Noteholders any one of them shall be entitled to vote in respect of such Notes
either in person or by proxy and, in the latter case, as if the joint holder were solely entitled to such Notes. If more than one joint holder is present at any meeting either personally or by proxy that one joint holder so present whose name as
between himself and the other or others present stands first in the register as one of the joint holders shall alone be entitled to vote in person or by proxy. 

 

	14.	 Each instrument appointing a proxy must be in writing and duly executed by the appointor or his duly authorised
attorney or, in the case of a corporation under its common seal or duly executed by a duly authorised attorney or officer. The Chairman may (but shall not be bound to) require evidence of the authority of any attorney or officer. A proxy need not be
a Noteholder. 

  

	15.	 An instrument of proxy shall be in the usual or common form or in any other form that the Directors may accept.
The proxy shall be deemed to include the right to demand or join in demanding a poll. A proxy shall, unless stated otherwise, be valid as well for any adjournment of the meeting as for the meeting to which it relates and need not be witnessed.

  

	16.	 The instrument appointing a proxy, and the power of attorney or other authority (if any) under which it is
signed or a notarially certified copy of such power of attorney or authority, shall be deposited at the place specified in (or in any document accompanying) the notice convening the meeting. If no such place is specified, the proxy shall be
deposited at the registered office of the Company not less than 48 hours before the time appointed for holding the meeting or adjourned meeting or for taking of the poll at which the person named in that instrument proposes to vote. In default, the
instrument of proxy shall not be treated as valid. A vote given in accordance with the terms of an instrument of proxy shall be valid notwithstanding the revocation of the proxy or of the authority under which the proxy is given, unless notification
in writing of the revocation has been received at the registered office of the Company or at such other place (if any) specified for the deposit of instruments of proxy in the notice convening the meeting (or any document accompanying it) 48 hours
before the commencement of the meeting or adjourned meeting or the taking of the poll at which the vote is given. 

  
 43 

	17.	 Without prejudice to any of the powers conferred on the Company under any of the provisions of the Instrument,
a meeting of the Noteholders shall, in addition to any other powers, have the following powers exercisable by Special Resolution: 

  

	 	(a)	 power to sanction the exchange or sale of the Notes for, or the conversion of the Notes into, or the
cancellation of the Notes in consideration of, shares, stock, debenture stock or other obligations or security of the Company or any other company formed or to be formed (provided, in each of the foregoing cases, that such action will be conducted
in accordance with the terms of the Conditions or with the prior written consent of the Company); 

  

	 	(b)	 power to sanction any abrogation, modification or compromise of, or any arrangement in respect of, the
Noteholders’ rights against the Company, provided the same has been previously approved in writing by the Company, whether those rights shall arise under the Instrument, the Notes or otherwise; 

 

	 	(c)	 power to assent to any modification of the provisions contained in the Instrument and the Conditions and to
authorise the Company to execute any supplemental instrument embodying any such modification. Any such modification shall be proposed by the Company; and 

  

	 	(d)	 with the prior written consent of the Company, power to: 

 

	 	(i)	 modify the date fixed for final redemption of the Notes; 

 

	 	(ii)	 reduce or cancel the principal amount payable on the Notes; 

 

	 	(iii)	 reduce the amount payable or modify the method of calculating the amount payable on the Notes; or

  

	 	(iv)	 modify the dates for payment in respect of any interest, on the Notes. 

 

	18.	 A Special Resolution passed at a meeting of the Noteholders shall be binding on all the Noteholders whether or
not they are present at the meeting. Each of the Noteholders shall be bound to give effect to it accordingly. The passing of any such resolution shall be conclusive evidence that the circumstances justify passing it (so that the meeting may
determine without appeal whether or not the circumstances justify passing it). 

  

	19.	 Special Resolution, when used in the Conditions, means a resolution passed at a meeting of the
Noteholders duly convened and held in accordance with the Conditions, and carried by a Noteholder Majority. 

  
 44 

	20.	 A resolution in writing signed by or on behalf of a Noteholder Majority shall, for all purposes, be as valid
and effectual as a Special Resolution passed at a meeting duly convened and held in accordance with the Conditions. Such resolution in writing may be contained in one document or in several documents in similar form, each signed by one or more
Noteholders. 

  

	21.	 Minutes of all resolutions and proceedings at every meeting shall be made and duly entered in books to be from
time to time provided for that purpose by the Company. Any minutes, if purporting to be signed by the Chairman of the meeting or by the Chairman of the next succeeding meeting of the Noteholders, shall be conclusive evidence of the matters stated in
them. Until the contrary is proved, every meeting for which minutes have been made and signed shall be deemed to have been duly held and convened, and all resolutions passed at the meeting to have been duly passed. 

  
 45 

 EXECUTED as a DEED by MEREO BIOPHARMA GROUP PLC 

acting by 

			
	
	  

	
	Director/Authorised signatory
	
	  

	
	Director/Authorised signatory
		
	Witness	 	  

		
	Name:	 	  

		
	Address:	 	  

		
	Occupation:	 	  

  
 46EX-10.4

 Exhibit 10.4 
  

			
	DATED	  	JUNE 3, 2020

  
  
  

 
 WARRANT INSTRUMENT 

 
  

 THIS WARRANT INSTRUMENT is made
on                                         
                                         
                      June 3, 2020 
 BY

 MEREO BIOPHARMA GROUP PLC, a public limited liability company incorporated and registered in England & Wales under company number
09481161, whose registered office is at Fourth Floor, One Cavendish Place, London, W1G 0QF (the “Company”). 
 AGREED TERMS

 This warrant instrument (this “Warrant Instrument”) has been entered into by the Company by way of deed poll to constitute the
Warrants to subscribe for the Shares (as such terms are defined herein), subject to the Company’s articles of association. 
 This Warrant Instrument
constitutes Warrants in respect of up to 161,048,366 Shares on the terms and conditions herein. 
 This Warrant Instrument and the exhibits and appendices
set out the terms and conditions of the Warrants. 
 Subject to the terms and conditions herein, no modification to this Warrant Instrument may be effected
except by deed poll executed by the Company. 
 The Warrants shall be binding on the Company and each Warrantholder (and all persons claiming through or
under them respectively). 
 This Warrant Instrument, and any non-contractual rights or obligations arising out of
or in connection with it or its subject matter, shall be governed by and construed in accordance with English law. 

  
 1 

 This Warrant Instrument has been duly executed by the Company and delivered as a deed on the date shown at
the beginning. 
  

			
	 SIGNED as a DEED for and on behalf of
 MEREO
BIOPHARMA GROUP PLC
 by:
	 	 )
 )

)

		
	  
	 	
	Director	 	
		
	  
	 	
	Director/Secretary	 	

  
 2 

 Terms and Conditions of the Warrants 

 

	1.	 Terms and Conditions of the Warrants 

 

	1.1	 Background and Reasons for Issuing the Warrants 

The issuance of Warrants (as defined below) by Mereo BioPharma Group plc (the “Company”) is made pursuant to the terms and
conditions set out herein (the “Terms and Conditions”). 
 In respect of the Offering (defined below), these Terms and
Conditions will be appended to a securities purchase agreement dated June 3, 2020 (the “Securities Purchase Agreement”) between the Company and certain investors (the “Investors”) in an offering exempt from
registration pursuant to Regulation D (the “Offering”) under the U.S. Securities Act of 1933, as amended (the “Securities Act”) under which the Investors have, subject to certain terms and conditions,
undertaken to subscribe for the following securities of the Company: (a) units (the “Units”), with each Unit consisting of one ordinary share of the Company, nominal value £0.003 per share (such class of shares, the
“Shares”), together with one warrant to subscribe for 0.50 Shares; and (b) one convertible promissory note in the original aggregate principal amount of £1 (all such convertible promissory notes to be issued to the
Investors, the “Notes”), together with warrants to purchase a number of Shares equal to 0.5 times the number of Shares issuable upon conversion of each Note. 
  

	1.2	 Number of Warrants 

The Company shall issue warrants to the Investors entitling the holders thereof (the “Warrantholders”) conditional upon the
receipt of the Shareholder Approval (as defined in the Securities Purchase Agreement) to subscribe for in aggregate a maximum of 161,048,366 Shares during the Share Subscription Period (as defined below) in accordance with Section 2, subject to
adjustment as described in these Terms and Conditions (all such warrants to be issued to the Investors, the “Warrants”). 
  

	1.3	 Subscription for Warrants 

In accordance with the terms of the Offering, the Warrants have been subscribed for by, and shall be issued to, the Investors immediately
following the execution of the Warrant Instrument. 
 The Warrants will be issued in certificated form in the form set out in
Appendix (C) (each such certificate, a “Warrant Certificate”). The Company or its duly authorized agent shall maintain a register of the holders of Warrants, the Warrant Certificates they hold, and the
number of Warrant Shares (defined below) for which their Warrants are exercisable. 
 The Company shall be entitled to treat each person
named in the register of the holders of Warrants as a Warrantholder as the absolute owner of a Warrant and, accordingly, shall not, except as ordered by a court of competent jurisdiction or as required by law, be bound to recognise any equitable or
other claim to or interest in a Warrant on the part of any other person, whether or not it shall have express or other notice of such a claim. 

  
 3 

 The Warrants will not be listed by the Company on a regulated market or other trading
platform. 
  

	1.4	 Transfer of Warrants 

The Warrants shall not be transferred or pledged by a Warrantholder prior to August 8, 2020. Thereafter, the holder of any Warrants may
freely transfer their Warrants, provided that such transfer of Warrants is made in compliance with these Terms and Conditions, applicable securities laws, and all requirements of regulatory authorities. The holder of the Warrant to be transferred or
pledged must, prior to transfer or pledge of the Warrant, deliver to the Company: (a) the original Warrant Certificate (or an indemnity in a form satisfactory to the Company (acting reasonably) in the event that the Warrant Certificate is lost
or destroyed); and (b) a duly executed Warrant Assignment in the form of Exhibit (A). 
  

	1.5	 Prior to the Commencement Date 

Notwithstanding that Sections 2.10 and 2.11 would apply to Warrants issued prior to the Commencement Date, those Sections shall not apply to
any Warrants held by: (a) an Original Warrantholder (as defined in the Securities Purchase Agreement) who failed to attend (either in person or by proxy) any Shareholders Meeting called for the purpose of obtaining the Shareholder Approval and
to vote in favour of such Shareholder Approval with the entirety of all voting rights available to such Original Warrantholder and (b) any person being a successor in title of, or claiming through or under, that Original Warrantholder. 

 

	1.6	 Lapse 

All Warrants shall lapse and no longer be outstanding upon the earliest of the Alternative Warrant Conversion Closing Date (as defined in the
Securities Purchase Agreement) and the expiration of the Share Subscription Period and August 8, 2025, and rights of a holder with respect to the Warrant or the Warrant Shares issuable upon exercise thereof shall immediately terminate upon such
lapse. Thereupon, all Warrant Certificates shall be deemed cancelled and will not in any circumstances be available for reissue or be valid for any purpose 
  

	2.	 Terms and Conditions of Share Subscription 

 

	2.1	 Right to Subscribe for Warrant Shares 

Each Warrant Certificate entitles its holder conditional upon receipt of Shareholder Approval to subscribe for a number of new Shares set forth
in the Warrant Certificate (the “Warrant Shares”), subject to adjustment as described in these Terms and Conditions. The Warrants may be exercised in whole or in part and, if in part, may be exercised from time to time during the
Share Subscription Period. 

  
 4 

 If this Warrant shall have been exercised in part, the Company shall, at the request of the
Warrantholder and upon surrender of this Warrant Certificate, at the time of delivery of the Warrant Shares, deliver to the Warrantholder a new Warrant evidencing the rights of the Warrantholder to purchase the unpurchased Warrant Shares called for
by this Warrant, which new Warrant shall in all other respects be identical with this Warrant. 
 No fractional shares shall be issued upon
the exercise of any Warrant. As to any fraction of a share which the Warrantholder would otherwise be entitled to purchase upon such exercise (determined on an aggregate basis with all other Warrants then being exercised by the Warrantholder), the
Company shall round down to the next whole share. 
  

	2.2	 Subscription Price 

The subscription price for each Warrant Share is £0.348 (which price is expressed on a per-Share
basis), subject to adjustment as described in these Terms and Conditions (the “Warrant Exercise Price”). The Warrant Exercise Price shall be booked in its entirety to the share capital (including to the extent relevant the share
premium account) of the Company. 
  

	2.3	 Share Subscription, Payment and Registration of Shares 

Unless otherwise specifically provided under these Terms and Conditions, the Warrants shall be exercisable for the Warrant Shares as set forth
in this Section 2.3 during the subscription period that commences on the Shareholder Approval Date (as defined in the Securities Purchase Agreement) (the “Commencement Date”), and ends on the third anniversary of the
Commencement Date (the “Share Subscription Period”). Notwithstanding any other provision of these Terms and Conditions, prior to the Commencement Date, the Warrantholders shall not be able to exercise any right to subscribe for
Warrant Shares and the Board of Directors of the Company will only have exercised any power to grant such right for the purposes of s551 Companies Act 2006 on the Commencement Date. 

The Warrants may be exercised in whole or in part, at any time or from time to time on any Business Day (as defined in the Securities Purchase
Agreement) during the Share Subscription Period, by surrender of the Warrant Certificate and the exercise notice in the form set out in Exhibit (C) (the “Exercise Notice”), duly completed and executed by the Warrantholder, to
the Company (or such other office or agency of the Company as it may designate by notice in writing to the registered Warrantholder at the address of the Warrantholder appearing on the books of the Company) specifying whether the Warrants will be
exercised by way of: 
  

	 	(a)	 cash payment, with the Warrantholder making payment to the Company in cash of the Warrant Exercise Price for
the Warrant Shares (the “Exercise Amount”) by wire transfer of immediately available funds to the following account of the Company: 

Account Name:        Mereo BioPharma Group plc 

Bank:                       
 [—] 
 Account No.:            [—] 

Sort Code:                 [—] 

BIC/SWIFT:             [—] 

IBAN:                      
[—] 

  
 5 

 (or such other account as the Company may from time to time notify the Warrantholder in
replacement thereof) in an amount equal to the Exercise Amount; or 
  

	 	(b)	 the cashless exercise procedure specified in Section 2.4 below, 

together with in each case: (i) to the extent necessary under the Securities Act, delivery to the Company of an Accredited Investor
Certification certifying the “accredited investor” status under the Securities Act of the recipient of the Warrant Shares to be received upon exercise of the Warrants in the form set out in Exhibit (B); and (ii) written
certification from the Warrantholder that the exercise of the relevant Warrants will not result in the Warrantholder exceeding the exercise limitation provided for in Section 2.14, with such exercise to be effective upon receipt by the Company
of such notice, such Exercise Amount and such Accredited Investor Certification (the “Effective Exercise”). 
 In the event
the Warrantholder delivers an Accredited Investor Certification in connection with exercise of Warrants, unless there is then an effective registration statement covering the issuance or resale of the Warrant Shares to be issued upon exercise, the
Warrant Shares shall bear the legend set forth in Section 2.13. If delivered to the Warrantholder via CREST, the Warrant Shares shall be issued free of any restrictive legends (with such Warrant Shares being eligible for trading on AIM, a
market operated by London Stock Exchange plc (“AIM”) (if at the relevant time the Shares continue to be admitted to trading on AIM) and, if there is an effective registration statement covering the Warrant Shares to be issued upon
exercise, then the Warrant Shares may be issued to the custodian of the Depositary (as defined in the Securities Purchase Agreement) and deposited with the Depositary, and, following such deposit the Company will direct the Depositary to issue an
amount of ADSs (as defined in the Securities Purchase Agreement) via DTC (with such shares being eligible for listing on the Nasdaq Global Market or the Nasdaq Capital Market (“Nasdaq”) (in each case, as applicable). 

Once received by the Company, an Exercise Notice shall be irrevocable save with the consent of the directors of the Company (or a duly
authorised committee thereof). If the Company has reasonable grounds to object to any attempted exercise, it must give written notice of such objection within two (2) Business Days of receipt of the related Exercise Notice. 

The Company shall issue Warrant Shares on the basis of the Warrants exercised in accordance with this Section 2.3, or resulting from the
cashless exercise procedure pursuant to Section 2.4, to the exercising Warrantholder. Warrant Shares issued on the basis of Warrants exercised in accordance with this Section 2.3, or resulting from the cashless exercise procedure pursuant
to Section 2.4, shall be: (i) written up in the Company’s register of members as soon as practicable (and in any event within 4 Business 

  
 6 

 
Days) of the Effective Exercise, and if the applicable Exercise Notice requires the issue of share certificates, the applicable share certificates shall be issued to the relevant Warrantholders
as soon as practicable (and in any event within 10 Business Days) of the issuance of the referable Warrant Shares; (ii) admitted to trading as set forth in Section 3.1; and (iii) if the applicable Exercise Notice requires delivery in
uncertificated form, delivered to the relevant CREST account as set forth in Section 3.1. 
 Unless a relevant Exercise Notice is
revoked or automatically cancelled in accordance with these Terms and Conditions, delivery of the Warrant Shares issuable upon exercise shall be made as soon as practicable (and in any event within 4 Business Days) after the Effective Exercise,
provided that in the case of the cashless exercise procedure pursuant to Section 2.4 delivery of the Warrant Shares resulting therefrom shall be made as soon as practicable (and in any event within 4 Business Days) following receipt by the
Company of the relevant Nominal Price (as defined in Section 2.4). 
 If by the close of the fourth Business Day period set out in the
preceding paragraph, the Company fails (other than as a result of a failure within the CREST system) to deliver to the Warrantholder the required number of Warrant Shares to which the Warrantholder is entitled pursuant to the relevant exercise, and
if after such 4 Business Day period and prior to the receipt of such Warrant Shares, the Warrantholder purchases (in an open market transaction or otherwise) Shares to deliver in satisfaction of a sale by the Warrantholder of the Warrant Shares
which the Warrantholder anticipated receiving upon such exercise (a “Buy-In”), then the Company shall, within 3 Business Days after the Warrantholder’s request promptly honor its
obligation to deliver to the Warrantholder the Warrant Shares and pay cash to the Warrantholder in an amount equal to the excess (if any) of Warrantholder’s total purchase price (including brokerage commissions actually incurred, if any) for
the Shares so purchased in the Buy-In over the product of (A) the number of Shares purchased in the Buy-In, multiplied by (B) the Closing Price (as defined
above) of a Share on the date of Effective Exercise. 
 The Warrants shall be exercised and the Warrant Shares shall be issued subject to and
in accordance with any applicable laws or regulations to which the Company is subject including the AIM Rules for Companies and the Market Abuse Regulation (EU 596/2014) and any other laws or regulations applicable in the jurisdiction in which the
Warrantholder is located. 
 If, following delivery of Warrant Shares, the Warrantholder deposits those Warrant Shares with the Depositary
for delivery of ADSs, the Company shall use its reasonable endeavours to cooperate with any reasonable request made of the Company by or on behalf of the Depositary in connection with such deposit and any sale of the ADSs under an effective
registration statement covering such ADSs or pursuant to an exemption from registration available under the U.S. securities laws; provided, any ADSs (either certificates or book entry notations) shall be issued with restrictive legends
under the Securities Act if, at the time of such deposit of the Warrant Shares, the ADSs have not then been registered for resale under that the Registration Rights Agreement (as defined in the Securities Purchase Agreement). 

  
 7 

	2.4	 Cashless Exercise 

In place of a subscription at full Warrant Exercise Price, a Warrantholder may, at its sole discretion, elect to exchange all or any portion of
its Warrants by way of cashless exercise for such number of Warrant Shares calculated using the following formula: 
  
 

 
 where: 
  

	 	A  =	 the number of Warrant Shares to be issued to the Warrantholder; 

 

	 	B  =	 the number of Warrant Shares that would be issued to the Warrantholder in respect of the Warrants being
exchanged if they were exercised at full Warrant Exercise Price rather than by way of cashless exercise; 

  

	 	C  =	 the Closing Price at the time of delivery of the Exercise Notice giving rise to the applicable cashless
exercise; and 

  

	 	D  =	 the Warrant Exercise Price per Warrant Share, as adjusted hereunder. 

Where the Warrantholder elects to exchange its Warrants by way of cashless exercise, the Warrantholder shall subscribe at nominal value for the
Warrant Shares resulting from the above formula (the aggregate nominal value payable to the Company in respect of all such Warrant Shares being so subscribed shall be rounded up to the nearest £1 (the “Nominal Price”)). 

The Company shall notify the Warrantholder of the Nominal Price and the Warrantholder covenants to pay the Nominal Price to the Company in cash
in the manner set out in sub-paragraph (a) of Section 2.3 within 4 Business Days of such notification. 

An issue of Warrant Shares to the Warrantholder pursuant to an election made in accordance with this Section 2.4 shall fully satisfy the
Company’s obligations to issue Warrant Shares to such Warrantholder and, following such issue, the number of Warrant Shares for which that Warrantholder shall be entitled to subscribe shall be reduced by the number of Warrant Shares represented
by the figure “B” in the formula above in respect of the relevant election. 
 If the Closing Price is less than the Warrant
Exercise Price, and Exercise Notice shall be automatically cancelled. 
 The “Closing Price” means: (i) if at the
relevant time the Shares continue to be admitted to trading on AIM, the most recently reported closing price of one Share on AIM; or (ii) if at the relevant time the Shares are no longer admitted to trading on AIM, the implied price of one
Share in pounds sterling by reference to the most recently reported closing price of an ADS on Nasdaq. For the purposes of (ii), the closing price of an ADS shall be converted into pounds sterling in accordance with Section 3.5. 

  
 8 

 The provisions above permitting “cashless exercise” are intended, in part, to
enable the parties to take the position that the exchange of this Warrant for Warrant Shares pursuant to such provisions will be characterized as and constitute a valid reorganization in the form of a recapitalization under section 368(a)(1)(E) of
the U.S. Internal Revenue Code of 1986, as amended. 
  

	2.5	 Shareholder Rights 

The Warrant Shares subscribed for on the basis of the Warrants will rank for all dividends declared, made or paid after the date of issue and
otherwise rank pari passu with the existing ordinary shares in the capital of the Company. 
  

	2.6	 Adjustment for Subdivisions and Consolidations 

If the Company, prior to the Shareholder Approval Date (as defined in the Securities Purchase Agreement), or following Shareholder Approval (as
defined in the Securities Purchase Agreement) and prior to the end of the Share Subscription Period, shall effect a subdivision of its ordinary shares, the Warrant Exercise Price then in effect immediately before that subdivision shall be
proportionately decreased and the number of shares issuable upon exercise of such Warrant shall be proportionately increased. If the Company, prior to the end of the Share Subscription Period shall consolidate its ordinary shares, the Warrant
Exercise Price then in effect immediately before the combination shall be proportionately increased and the number of shares issuable upon exercise of such Warrant shall be proportionately decreased. Any adjustment under this Section 2.6 shall
become effective at the close of business on the date the subdivision or consolidation becomes effective. 
  

	2.7	 Adjustment for Certain Dividends and Distributions 

If the Company, prior to the Shareholder Approval Date, or following Shareholder Approval and prior to the end of the Share Subscription
Period, shall make or issue, or fix a record date for the determination of holders of its ordinary shares entitled to receive, a dividend or other distribution to the shareholders payable in ordinary shares in the Company, then and in each such
event the Warrant Exercise Price then in effect immediately before such event shall be decreased as of the time of such issuance or, in the event such a record date shall have been fixed, as of the close of business on such record date, by
multiplying the Warrant Exercise Price then in effect by a fraction: 
  

	 	(a)	 the numerator of which shall be the total number of ordinary shares outstanding immediately prior to the time
of such issuance or the close of business on such record date, and 

  

	 	(b)	 the denominator of which shall be the total number of ordinary shares outstanding immediately prior to the time
of such issuance or the close of business on such record date plus the number of ordinary shares issuable in payment of such dividend or distribution; 

  
 9 

 and the number of shares issuable upon exercise of such Warrant shall be multiplied by the
inverse of such fraction; provided, however, that (i) if such record date shall have been fixed and such dividend is not fully paid or if such distribution is not fully made on the date fixed therefor, the Warrant Exercise Price
and the number of issuable shares shall be recomputed accordingly as of the close of business on such date and thereafter the Warrant Exercise Price and the number of issuable shares shall be adjusted pursuant to this paragraph as of the time of
actual payment of such dividends or distributions, if any; and (ii) no such distribution or dividend shall be made to the extent that the consequent adjustment under this Section 2.7 would be unlawful (including pursuant to s549 Companies
Act 2006) and/or would be subject to pre-emption rights (including pursuant to s561 Companies Act 2006). 
  

	2.8	 Adjustments for Other Dividends and Distributions 

If the Company, prior to the Shareholder Approval Date, or following Shareholder Approval and prior to the end of the Share Subscription
Period, shall: (i) pay or declare a dividend payable to all shareholders payable in cash or in specie out of profits available for distribution; or (ii) make any distribution or return of share capital (including share premium account and
capital redemption reserve) to shareholders in cash or in-specie, then and in each such event the Warrant Exercise Price then in effect immediately before such event shall be decreased as of such event by
multiplying the Warrant Exercise Price then in effect by a fraction: 
  

	 	(a)	 the numerator of which shall be equal to (i) the Closing Price on the day immediately prior to the date
when such event was first published (or if there is no such price, the fair market value of one ordinary share of the Company as of such date as determined in good faith by the Board of Directors) minus (ii) the amount per issued ordinary share
of such dividend or distribution; and 

  

	 	(b)	 the denominator of which shall be the Closing Price on the day immediately prior to the date when such event
was first published (or if there is no such price, the fair market value of one ordinary share of the Company as of such date as determined in good faith by the Board of Directors). 

In the event that the application of the above fraction would result in an increase in the Warrant Exercise Price, then no adjustment shall be
made hereunder. If the Company distributes assets other than cash, the amount per outstanding share of the distribution shall be calculated by reference to the fair market value of the assets distributed as determined in good faith by the Board of
Directors of the Company. No adjustment shall be made pursuant to this Section 2.8 where the relevant dividend or distribution falls within Section 2.7. 

  
 10 

	2.9	 Adjustment for Reorganization 

If, prior to the Shareholder Approval Date, or following Shareholder Approval and prior to the end of the Share Subscription Period, there
shall occur any reorganization, recapitalization, reclassification, consolidation, merger or demerger involving the Company in which the Company’s ordinary shares are converted into or exchanged for securities, cash or other property (other
than an event covered by Sections 2.6, 2.7, 2.8 or 2.10) (collectively, a “Reorganization”), then, following such Reorganization, the Warrantholder shall receive upon exercise of the Warrants the kind and amount of securities,
cash or other property, if any, which the Warrantholder would have been entitled to receive pursuant to such Reorganization if such exercise had taken place immediately prior to such Reorganization. Appropriate adjustment (as determined in good
faith by the Board of Directors) shall be made in the application of the provisions set forth herein with respect to the rights and interests thereafter of the Warrantholder, to the end that the provisions set forth in these Terms and Conditions
(including provisions with respect to changes in and other adjustments of the Warrant Exercise Price and the number of Warrant Shares issuable upon exercise of the Warrants) shall thereafter be applicable, as nearly as reasonably may be, in relation
to any securities, cash or other property thereafter deliverable upon the exercise of the applicable Warrants. 
  

	2.10	 Treatment of Warrants in an Acquisition 

In the event of an Acquisition prior to the Shareholder Approval Date, or following Shareholder Approval and prior to the end of the Share
Subscription Period, the Company shall use its best efforts to ensure that lawful and adequate provision shall be made whereby each Warrantholder shall thereafter continue to have the right to purchase and receive upon the Terms and Conditions and
in lieu of the Warrant Shares issuable upon exercise of the Warrants held by such Warrantholder (without regard to any limitations on exercise contained in such Warrants), shares of voting stock (the “Alternate Warrants”) in such
successor, surviving or acquiring entity (as the case may be, the “Acquirer”), such that the aggregate value of the Warrantholder’s warrants to purchase such number of shares of the Acquirer (where the value of a warrant to
purchase one share in the Acquirer is determined in accordance with the Black-Scholes Option Pricing formula set forth in Appendix (A) hereto, without regard to any limitations on exercise contained in such Warrants), is
equivalent to the aggregate value of the Warrants held by such Warrantholder (where the value of each Warrant to purchase one Warrant Share is determined in accordance with the Black-Scholes Option Pricing formula set forth Appendix
(B) hereto, without regard to any limitations on exercise contained in such Warrants). Furthermore, the Alternate Warrants shall have the same expiration date as the Warrants, and shall have a strike price, KAcq, that is calculated
in accordance with Appendix (A) hereto. For the avoidance of doubt, if the Acquirer surviving or acquiring entity, as the case may be, is a member of a consolidated group for financial reporting purposes, the “Acquirer”
shall be deemed to be the parent of such consolidated group for purposes of this Section 2.10 and Appendix (A) hereto. 
  

	 	(a)	 Moreover, appropriate provision shall be made with respect to the rights and interests of each Warrantholder to
the end that the provisions hereof (including, without limitation, provision for adjustment of the Warrant Exercise Price) shall thereafter be applicable, as nearly equivalent as may be practicable in relation to any shares of stock thereafter
deliverable upon the exercise of the Alternate Warrants. The Company shall use its best efforts to ensure that prior to or simultaneously with the consummation thereof the successor corporation resulting

  
 11 

	 	
from such consolidation or merger, or the corporation purchasing or otherwise acquiring such assets or other appropriate corporation or entity shall assume by written instrument, reasonably
deemed by the Board of Directors of the Company and the Warrantholder to be satisfactory in form and substance, the obligation to deliver to the holder of the Warrants, at the last address of such holder appearing on the books of the Company, the
Alternate Warrants to purchase such shares of stock of the Acquirer, as, in accordance with the foregoing provisions, such holder may be entitled to purchase, and otherwise assume the other obligations under these Warrants. The provisions of this
Section 2.10 shall similarly apply to successive Acquisitions. 

  

	 	(b)	 If the Company, in spite of using its best efforts, is unable to ensure that the Warrantholder shall have the
Alternate Warrants until the expiration of the Share Subscription Period in connection with any Acquisition, then the Company (or the Acquirer) shall (to the extent lawful) pay the Warrantholder an amount equal to the Black-Scholes Value of this
Warrant (where the value of each Warrant to purchase one Warrant Share is determined in accordance with the Black-Scholes Option Pricing formula set forth Appendix (B) hereto), unless the holders together of Warrants and Note
Warrants representing at least two-thirds of the aggregate number of Warrant Shares issuable upon the exercise of all outstanding Warrants and of Shares issuable upon the exercise of all outstanding Note
Warrants (in each case without regard to any limitations on exercise) (the “Majority Holders”) determine to waive such requirement to make such payment. Such payment shall be made in cash in the event that the Acquisition results in
the shareholders of the Company receiving cash from the Acquirer at the closing of the transaction, and shall be made in shares of the Company (with the value of each share in the Company determined according to SCorp in Appendix
(B) hereto) in the event that the Acquisition results in the shareholders of the Company receiving shares in the Acquirer or other entity at the closing of the transaction. In the event that the shareholders of the Company receive both cash
and shares at the closing of the transaction, such payment to the Warrantholders shall (to the extent lawful) also be made in both cash and shares in the same proportion as the consideration received by the shareholders. Following any payment
required pursuant to this Section 2.10(b), the Warrant shall terminate, without payment of any additional consideration therefor. 

  

	 	(c)	 Notwithstanding anything to the contrary hereunder, if the Acquisition is (1) a transaction where the
consideration paid to the holders of the Shares consists of cash, (2) a “Rule 13e-3 transaction” as defined in Rule 13e-3 under the Securities Exchange
Act of 1934, as amended, (3) an Acquisition involving a person or entity not traded on a regulated market (within the meaning of the Markets in Financial Instruments Directive (2004/39(EC))) or a United States national securities exchange or
(4) a transaction for which the Majority Holders reasonably determine that the Alternate Warrants proposed to be provided by the Acquirer do not satisfy the terms hereof (provided, that such holders consult with the Company and provide a
written basis for such determination and that includes evidence of such determination by the Majority Holders), at the request of the Warrantholder 

  
 12 

	 	
delivered before the ninetieth (90th) day after such Acquisition, the Company (or the Acquirer) shall (to the extent lawful) purchase this Warrant from the Warrantholder by paying to the
Warrantholder, within five (5) Business Days after such request (or, if later, on the effective date of the Acquisition), cash in an amount equal to the Black-Scholes Value of this Warrant (where the value of each Warrant to purchase one
Warrant Share is determined in accordance with the Black-Scholes Option Pricing formula set forth Appendix (B) hereto). Following any payment required pursuant to this Section 2.10(c), the Warrant shall terminate, without
payment of any additional consideration therefor. 

 Notwithstanding the foregoing provisions of this Section 2.10, if
Shareholder Approval has not then been received, this Section 2.10 shall not apply to any Acquisition occurring after August 8, 2023. 

An “Acquisition” means any of the following: (i) any sale or similar transaction of all or substantially all of its
assets in one or a series of related transactions; (ii) any merger, reorganization, consolidation, demerger or other similar transaction or a series of related transactions with or into another person in which the Company is not the survivor or
the shareholders of the Company immediately before the transaction or series of related transactions own, directly or indirectly, less than a majority by voting power of the issued shares of the surviving or successor entity immediately after the
transaction or series of related transactions; (iii) a scheme of arrangement under Part 26 of the Companies Act of 2006 pursuant to which all of the securities or shares in the Company become vested in a third party; (iv) a takeover offer
within the meaning of Part 28 of the Companies Act 2006, or a public tender offer for the shares in the Company, pursuant to which a majority of its ordinary shares are acquired by a third party; or (v) the acquisition by any “person”
or “group” (within the meaning of Section 13(d)(3) or 14(d)(2) of the U.S. Securities Exchange Act of 1934, as amended (the “Exchange Act”)), including any group acting for the purpose of acquiring, holding or disposing of
securities (within the meaning of Rule 13d-5(b)(1) or any successor provision) directly or indirectly, of beneficial ownership (as such term is defined in Rule 13d-3
promulgated under the Exchange Act, or any successor provision) of outstanding shares of capital stock and/or other equity securities of the Company, in a single transaction or series of related transactions (including, without limitation, one or
more tender offers or exchange offers), representing at least 50% of the voting power of the outstanding voting shares or economic interests in the then outstanding shares of capital stock of the Company. 

 

	2.11	 Rights of Warrantholders in Certain Situations 

 

	 	(a)	 If, prior to the end of the Share Subscription Period, an effective resolution for the winding up of the
Company is passed, which is preceded by the making of a statutory declaration of solvency under s89 Insolvency Act 1986, for the purposes of ascertaining its rights in the winding up, be treated as if it had, immediately before the passing of the
resolution, fully exercised its outstanding Warrants and shall be entitled to receive out of the assets available in the liquidation pari passu with the holders of the ordinary shares such sum as it would have received had it been the holder
of all such ordinary shares to which it would have been entitled by virtue of that exercise after deducting a sum equal to the sum which would have been payable for Warrant Shares, but nothing in this Section 2.11 shall require the
Warrantholder to make any payment to the Company or any other person. 

  
 13 

	 	(b)	 Without duplication in respect of Section 2.9 or Section 2.10: 

 

	 	(i)	 If, prior to the end of the Share Subscription Period, the Company makes a resolution to acquire its own shares
through a tender offer to all the shareholders or to acquire other special rights entitling to shares issued in one or more transactions that were related to the offering of the Warrants (the “Related Offerings”) through a tender
offer to all holders of such rights, the Company shall make an equal offer to the Warrantholders in respect of the Warrants. If the Company acquires its own shares in any other manner, or if the Company acquires stock options or special rights
entitling to shares other than those issued in the Related Offerings, no measures will need to be taken in relation to the Warrants. 

  

	 	(ii)	 If, prior to the end of the Share Subscription Period, a tender offer regarding all shares, stock options and
other special rights issued by the Company is made by a party other than the Company, including pursuant to a scheme of arrangement under Part 26 of the Companies Act 2006, then the Warrantholders may transfer all of their Warrants to such offeror,
as the case may be. If any such tender offer results in the third party acquiring a majority of the ordinary shares of the Company, then that event shall be deemed an “Acquisition” as set forth above. 

The Board of Directors may at its discretion in any of the situations mentioned in this Section 2.11(b)(ii), also give the Warrantholders
an opportunity (which for the avoidance of doubt shall not foreclose the Warrantholders from exercising the Warrants for the securities or other property for which they would otherwise have been exercisable) to exercise the Warrants or to convert
the Warrants into equity issued by the offeror, as the case may be, on such terms and within such reasonable time period prior to the completion of the tender offer, as resolved by the Board of Directors. 

Notwithstanding the foregoing provisions of this Section 2.11, if Shareholder Approval has not then been received, this Section 2.11
shall not apply to: (A) any winding up contemplated by Section 2.11(a), (B) any acquisition of own shares contemplated by Section 2.11(b)(i), or (C) any tender offer contemplated by Section 2.11(b)(i), in each case occurring
after August 8, 2023. 
  

	2.12	 Notice of Adjustment 

To the extent reasonably practicable and not prohibited by law, not less than ten (10) Business Days prior to the record date or effective
date, as the case may be, of: (i) any action which requires or might require an adjustment or readjustment of the Warrant Exercise Price or the number, amount or type of securities or other assets issuable upon

  
 14 

 
exercise of the Warrants; or (ii) an Acquisition, the Company shall give notice to the Warrantholder of such event, describing such event in reasonable detail and specifying the record date
or effective date, as the case may be, and, with, if determinable, the required adjustment and computation thereof. If the required adjustment is not determinable as the time of such notice, the Company shall give notice to the Warrantholder of such
adjustment and computation as soon as reasonably practicable after such adjustment becomes determinable. 
  

	2.13	 Legend 

Neither the Warrants nor the Warrant Shares issuable upon exercise of the Warrants have been or will be registered under the Securities Act or
under any state securities laws of the United States, except as provided under the Registration Rights Agreement. Except as otherwise permitted by Section 2.3, each Warrant Certificate and each certificate representing the Warrant Shares shall
bear the following legends or such variations thereof as the Company may prescribe from time to time: 
 THE SECURITIES REPRESENTED BY THIS
CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), OR APPLICABLE STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED
(I) EXCEPT PURSUANT TO (A) AN EFFECTIVE REGISTRATION STATEMENT IN COMPLIANCE WITH THE SECURITIES ACT, (B) RULE 903 or 904 PURSUANT TO THE SECURITIES ACT, OR (C) RULE 144 UNDER THE SECURITIES ACT (UPON FURNISHING TO THE COMPANY
SUCH REPRESENTATION LETTERS AS THE COMPANY MAY REQUIRE), OR (II) UNLESS AN OPINION OF COUNSEL, REASONABLY SATISFACTORY TO THE COMPANY, SHALL BE PROVIDED TO THE COMPANY, PROVIDING THAT SUCH SALE, TRANSFER OR ASSIGNMENT DOES NOT REQUIRE
REGISTRATION UNDER THE SECURITIES ACT. 
  

	2.14	 Exercise Limitation 

Notwithstanding any provisions herein to the contrary, the Warrantholder shall not be entitled to exercise Warrants if, immediately prior to or
after giving effect to such exercise, such Warrantholder beneficially owns 9.99% or more of the outstanding Shares, and the Warrantholder shall not be entitled to exercise Warrants for a number of Shares in excess of that number of Shares which,
upon giving effect to such exercise, would cause the aggregate number of Shares deemed beneficially owned by the Warrantholder to exceed 9.99% of the outstanding Shares following such exercise. For purposes of the foregoing proviso, the aggregate
number of Shares beneficially owned by the Warrantholder shall include the number of Shares issuable upon exercise of this Warrant with respect to which determination of such proviso is being made, but shall exclude the Shares which would be
issuable upon (i) exercise of the remaining, unexercised Warrants beneficially owned by the Warrantholder and (ii) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company beneficially owned
by the Warrantholder subject to a limitation on conversion or exercise analogous to the limitation contained 

  
 15 

 
herein. Except as set forth in the preceding sentence, for purposes of this Section 2.14, beneficial ownership shall be calculated in accordance with Section 13(d) of the Exchange Act.
Notwithstanding the foregoing, the Warrantholder may increase or decrease the foregoing limitation to any other percentage, by written notice to the Company; provided, that the Warrantholder may not decrease the limitation prior to August 8,
2020; provided, further, that a request to increase such limitation requires not less than 61 days prior written notice (with such waiver of the foregoing limitation or request to increase such limitation taking effect only upon the
expiration of such 61 day notice period and applying only to the Warrantholder and not to any other holder of Warrants) and that such limitation shall never be increased above 19.99%. For purposes of this Section 2.14, in determining the number
of outstanding Shares, the Warrantholder may rely on the number of outstanding Shares as reflected in (x) the Company’s most recent periodic report filed with the SEC on the date thereof, (y) a more recent public announcement by the
Company or (z) any other notice by the Company or its transfer agent setting forth the number of Shares outstanding. Upon the written request of the Warrantholder, the Company shall use commercially reasonable efforts to within confirm in
writing or by electronic mail to the Warrantholder the number of Shares then outstanding within three (3) Business Days after written request by such Warrantholder. In any case, the number of outstanding Shares shall be determined after giving
effect to the conversion or exercise of securities of the Company, including this Warrant, by the Warrantholder since the date as of which such number of outstanding Shares was reported. 

 

	2.15	 Exercise Price Limitation 

Notwithstanding anything to the contrary in these Terms and Conditions, no adjustment of the Warrant Exercise Price pursuant to any of Sections
2.6 to 2.9 shall result in the Warrant Exercise Price being less than the nominal value of a Warrant Share. 
  

	3.	 Other Terms 

  

	3.1	 Stock Exchange Listing and Government Approvals 

The Company will, at its own expense, use its commercially reasonable efforts to: (a) obtain and keep effective any and all permits,
consents and approvals of governmental agencies and authorities which may from time to time be required of the Company in order to satisfy its obligations under these Terms and Conditions; (b) to effect the admission to trading of the Warrant
Shares on AIM (if at the relevant time the Shares continue to be admitted to trading on AIM); (c) with respect to Warrant Shares that are to be delivered in uncertificated form (as specified in the applicable Exercise Notice), deliver such Shares,
as soon as possible following issuance, to the CREST account provided for in such Exercise Notice, provided that, if there is a failure within the CREST system on the date of issuance of the Warrant Shares that renders delivery of uncertificated
shares impracticable, the Company may either, at the Warrantholder’s election (1) deliver definitive share certificates in accordance with Section 2.3 in lieu of uncertificated shares or (2) delay delivery of Warrant Shares until
such failure ceases to exist (such delay not to exceed three Business Days from the date the failure ceases to exist).and (d) maintain the listing of the ADSs on Nasdaq or another United States national securities exchange. 

  
 16 

	3.2	 Governing Law and Jurisdiction 

These Terms and Conditions, and any non-contractual rights or obligations arising out of or in
connection with them or their subject matter, shall be governed by and construed in accordance with English law. By accepting Warrants, the Warrantholder submits to the non-exclusive jurisdiction of the
English courts. 
  

	3.3	 Notices 

All notices related to the Warrants by the Company shall be sent by express courier or e-mail to the
addresses provided to the Company by the respective Warrantholders. The notices related to the Warrants to the Company may be sent by express courier or e-mail to: 

Mereo BioPharma Group plc 

Address: Fourth Floor, One Cavendish Place, London, W1G 0QF, United Kingdom 

E-mail: legal@mereobiopharma.com 

Attention: General Counsel 
 A
notice made in accordance with the above shall be deemed to have been received by its recipient on (i) the fourth (4th) Business Day after the day of sending if sent by express courier, or (ii) on the day of transmission if sent by e-mail, provided that a confirmation of successful transmission has been obtained from the recipient. 
  

	3.4	 Lost or destroyed Warrant Certificates 

If any certificate for Warrant Certificate is worn out or defaced then upon production of such Warrant Certificate to the Directors of the
Company they may cancel the same and may issue a new Warrant Certificate in lieu thereof. If any such Warrant Certificate be lost or destroyed then upon proof thereof to the reasonable satisfaction of the Directors of the Company in their sole
discretion (or in default of proof, on such indemnity as the Directors of the Company may deem adequate being given) a new Warrant Certificate in lieu thereof may be given to the persons entitled to such lost or destroyed Warrant Certificate free of
charge (save as regards any payment pursuant to any such indemnity). 
  

	3.5	 Variation of Rights 

 

	 	(a)	 All or any of the rights for the time being attached to the Warrants may from time to time (whether or not the
Company is being wound up) be altered or abrogated with the consent in writing of the Company and with either the consent in writing of the Majority Holders or with the sanction of a Special Resolution of the Warrantholders. All the provisions of
the Articles of Association of the Company as to general meetings of the Company shall mutatis mutandis apply to any separate meeting of the Warrantholders as though the Warrants were a class of shares forming part of the Company and as if
such provisions were expressly set out in extenso herein but so that: 

  

	 	(i)	 the necessary quorum shall be the Warrantholders (present in person or by proxy) entitled to subscribe for one-third in nominal amount of the Warrant Shares subject to outstanding Warrants; 

  
 17 

	 	(ii)	 every Warrantholder present in person or by proxy at any such meeting shall be entitled on a show of hands to
one vote and on a poll to one vote for every Warrant Share for which it is entitled to subscribe pursuant to the Warrants; 

  

	 	(iii)	 any Warrantholder or Warrantholders of 10 per cent. or more of the aggregate outstanding Warrants present
in person or by proxy may demand or join in demanding a poll; and 

  

	 	(iv)	 if at any adjourned meeting a quorum as above defined is not present those holders of outstanding Warrants who
are then present in person or by proxy shall be a quorum. 

  

	 	(b)	 “Special Resolution” for the purposes of this Section 3.5 means a resolution proposed at
a meeting of the Warrantholders duly convened and held and passed by a majority consisting of not less than 66 2/3 per cent. of the votes cast, whether on a show of hands or on a poll. 

 

	3.6	 Other Matters 

By subscribing for the Warrants, the Warrantholders undertake to adhere to these Terms and Conditions. 

In discharging any obligations hereunder, the parties acknowledge and agree that time shall be of the essence. 

For the purpose of converting amounts specified in one currency into another currency where required, the rate of exchange to be used in
converting amounts specified in one currency into another currency shall be the closing mid-point rate for exchanges between those currencies quoted in the Financial Times (London edition) at the close of
business in the United Kingdom on the Business Day immediately prior to the date of the conversion. 
 Except as expressly provided in the
following sentence, a person who is not a party to this Instrument shall not have any rights under the Contracts (Rights of Third Parties) Act 1999 to enforce any term of these Terms and Conditions. The provisions of these Terms and Conditions are
intended to confer rights and benefits on the Warrantholders and such rights and benefits shall be enforceable by each of them to the fullest extent permitted by law. 

The Warrantholders shall be solely responsible for any taxes, duties and other such payments possibly incurred by the holders of Warrants in
relation to receiving the Warrants and the subscription or transfer of any Warrant Shares under these Terms and Conditions. 
 The Board of
Directors shall resolve upon all other matters related to the Warrants and to amend the technical procedures relating to the Warrants (including, but not limited to, additional procedures related to the subscription of Warrant Shares), provided, in
each case, that such actions, resolutions or amendments are not prejudicial to the Warrantholders. 

  
 18 

 Exhibit A 

Form of Warrant Assignment 

  
 19 

 Exhibit B 

Form of Accredited Investor Certification 

  
 20 

 Exhibit C 

Form of Exercise Notice 

  
 21 

 APPENDIX A 

Black-Scholes Option Pricing formula to be used when calculating the value of each new warrant to purchase one share in the Acquirer shall be: 

 
 

 
 CAcq = value of each warrant to purchase one
share in the Acquirer 
 SAcq = price of Acquirer’s stock as determined by
reference to the average of the closing prices on the securities exchange or Nasdaq over the 20-day period ending three trading days prior to the closing of the Acquisition described in Section 2.10 if
the Acquirer’s stock is then traded on such exchange or system, or the average of the closing bid or sale prices (whichever is applicable) in the over-the-counter
market over the 20-day period ending three trading days prior to the closing of the Acquisition if the Acquirer’s stock is then actively traded in the over-the-counter market, or the then most recently completed financing if the Acquirer’s stock is not then traded on a securities exchange or system or in the over-the-counter market. 
 TAcq = expiration date of
new warrants to purchase shares in the Acquirer = TCorp 
 tAcq = date of issue of new warrants to purchase shares in the Acquirer 
 TAcq-tAcq = time until warrant expiration, expressed in years 

s = volatility = annualized standard deviation of daily
log-returns (using a 262-day annualization factor) of the Acquirer’s stock price on the securities exchange or Nasdaq over a
20-day trading period, determined by the Majority Holders, that is within the 100-day trading period ending on the trading day immediately after the public announcement
of the Acquisition described in Section 2.10 if the Acquirer’s stock is then traded on such exchange or system, or the annualized standard deviation of daily-log returns (using a 262-day annualization factor) of the closing bid or sale prices (whichever is applicable) in the over-the- counter market over a 20-day trading period, determined by the Majority Holders, that is within the 100-day trading period ending on the trading day immediately after the public announcement of the
Acquisition if the Acquirer’s stock is then actively traded in the over-the-counter market, or 1.0 (or 100%) if the Acquirer’s stock is not then traded on a
securities exchange or system or in the over-the- counter market. In no event will the volatility variable be more than 1.0 (or 100%). 

N = cumulative normal distribution function 
  

 
 ln = natural logarithm 

l = dividend rate of the Acquirer for the most recent
12-month period at the time of closing of the Acquisition. 

KAcq = strike price of new warrants to purchase shares in the Acquirer = KCorp * (SAcq / SCorp) 

 r = annual yield, as reported by Bloomberg at time
tAcq, of the United States Treasury security measuring the nearest time TAcq 

 
 

 

 APPENDIX B 

Black-Scholes Option Pricing formula to be used when calculating the value of each Warrant to purchase one Share in the Company shall be: 

 
 

 
 CCorp = value of each Warrant to purchase one
share in the Company 
 SCorp = price of Company stock as determined by
reference to the average of the Closing Prices over the 20-day period ending three trading days prior to the closing of the Acquisition described in Section 2.10 if the Company stock is then traded on AIM
or Nasdaq, or the average of the closing bid or sale prices (whichever is applicable) in the over-the-counter market over the
20-day period ending three trading days prior to the closing of the Acquisition if the Company’s stock is then actively traded in the
over-the-counter market, if the Company’s stock is not then traded on a securities exchange or system or in the over-the-counter market, or the most recently completed financing if the Company’s stock is not then traded on a securities exchange or system or in the over-the-counter market. 
 TCorp =
expiration date of Warrants to purchase shares in the Company 
 tCorp =
date of public announcement of transaction 
 TCorp-tCorp = time until Warrant expiration, expressed in years 
 s = volatility = the annualized standard deviation of daily log-returns (using a 262-day annualization factor) of
the Company’s stock price on the securities exchange or Nasdaq Global Market over a 20- day trading period, determined by the Majority Holders, that is within the
100-day trading period ending on the trading day immediately after the public announcement of the Acquisition described in Section 2.10 if the Company’s stock is then traded on such exchange or
system, or the annualized standard deviation of daily-log returns (using a 262-day annualization factor) of the closing bid or sale prices (whichever is applicable) in
the over-the-counter market over a 20-day trading period, determined by the Majority Holders, that is within the 100-day trading period ending on the trading day immediately after the public announcement of the Acquisition if the Company’s stock is then actively traded in the over-the-counter market, or 1.0 (or 100%) if the Company’s stock is not then traded on a securities exchange or system or in the
over-the-counter market. In no event will the volatility variable be more than 1.0 (or 100%). 

N = cumulative normal distribution function 
  

 
 l = dividend rate of the Company for the most recent 12-month period at the time of closing of the Acquisition. 

KCorp = strike price of Warrant 

  
 24 

 r = annual yield, as reported by Bloomberg at time
tCorp, of the United States Treasury security measuring the nearest time TCorp 

 
 

 

 APPENDIX C 

Form of Warrant Certificate 

  
 26

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