# EDGAR Filing Document

**Accession Number:** 0001087711
**File Stem:** 0001999371-26-003707
**Filing Date:** 2026-2
**Character Count:** 5434
**Document Hash:** 375755ea75272f5c62f2fee3a9814baa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-26-003707.hdr.sgml**: 20260219

**ACCESSION NUMBER**: 0001999371-26-003707

**CONFORMED SUBMISSION TYPE**: ABS-15G

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**ITEM INFORMATION**: Periodic Filing of Rule 15Ga-1 Representations and Warranties Disclosure

**FILED AS OF DATE**: 20260219

**DATE AS OF CHANGE**: 20260219

**ABS RULE**: RULE-15GA1

**PERIOD START**: 20250101

**ABS ASSET CLASS**: Residential mortgages - Other/Combined

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Santander UK plc
- **CENTRAL INDEX KEY:** 0001087711
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMMERCIAL BANKS, NEC [6029]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ABS-15G
- **SEC ACT:** Dodd Frank Act
- **SEC FILE NUMBER:** 025-00440
- **FILM NUMBER:** 26653696

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2 TRITON SQUARE, REGENT'S PLACE
- **CITY:** LONDON
- **PROVINCE COUNTRY:** X0
- **BUSINESS PHONE:** 011 44 870 607 6000

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** 2 TRITON SQUARE, REGENT'S PLACE
- **CITY:** LONDON
- **PROVINCE COUNTRY:** X0

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ABBEY NATIONAL PLC
- **DATE OF NAME CHANGE:** 19990601

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM ABS-15G**

**ASSET-BACKED SECURITIZER**

**REPORT PURSUANT TO SECTION 15G OF**

**THE SECURITIES EXCHANGE ACT OF 1934**

**Santander UK plc**<sup>1</sup>

(Exact name of securitizer as specified in its charter)

Check the appropriate box to indicate the filing obligation to which this form is intended to satisfy:

&nbsp;&nbsp;&nbsp;&nbsp;☒ Rule 15Ga-1 under the Exchange Act (17 CFR 240.15Ga-1) for the reporting period

<u>January 1, 2025 to December 31, 2025</u>

Date of Report (Date of earliest event reported): <u>February 19, 2026</u>

Commission File Number of securitizer: <u>025-00440</u>

Central Index Key Number of securitizer: <u>0001087711</u>

<u>Alan Williams, +447718 121215</u> <br> Name and telephone number, including area code, of the person to contact in connection with this filing.

Indicate by check mark whether the securitizer has no activity to report for the initial period pursuant to Rule 15Ga-1(c)(1) ☐

Indicate by check mark whether the securitizer has no activity to report for the quarterly period pursuant to Rule 15Ga-1(c)(2)(i) ☐

Indicate by check mark whether the securitizer has no activity to report for the annual period pursuant to Rule 15Ga-1(c)(2)(ii) ☒

☐ Rule 15Ga-2 under the Exchange Act (17 CFR 240.15Ga-2)

Central Index Key Number of depositor:  

  <br> (Exact name of issuing entity as specified in its charter)

Central Index Key Number of issuing entity (if applicable):   <br> Central Index Key Number of underwriter (if applicable):  

  <br> Name and telephone number, including area code, of the person to contact in connection with this filing

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| | |
|:---|:---|
| 1 | Santander UK plc, as securitizer, is filing this Form ABS-15G in respect of all asset-backed securities issued in securitization programs sponsored by it and outstanding during the calendar year ended December 31, 2025 in the residential mortgage asset class, and issued and offered by the issuing entities Fosse Master Issuer PLC and Holmes Master Issuer PLC in either offerings registered under the U.S. Securities Act of 1933, as amended (the **Securities Act**) or in reliance on Rule 144A under the Securities Act. The information included in this Form does not include Santander UK plc's securitization programs under which asset-backed securities are issued and sold solely in offerings outside the United States in reliance on Regulation S under the Securities Act. |

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**INFORMATION TO BE INCLUDED IN THE REPORT** 

**PART 1: REPRESENTATION AND WARRANTY INFORMATION**

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| | |
|:---|:---|
| **Item 1.01** | **Initial Filing of Rule 15Ga-1 Representations and Warranties Disclosure** |

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Not applicable.

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| | |
|:---|:---|
| **Item 1.02** | **Periodic Filing of Rule 15Ga-1 Representations and Warranties Disclosure** |

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Pursuant to Rule 15Ga-1(c)(2)(ii), Santander UK plc has indicated by check mark that there is no activity to report for the calendar year ended December 31, 2025.

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| | |
|:---|:---|
| **Item 1.03** | **Notice of Termination of Duty to File Reports under Rule 15Ga-1** |

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Not applicable.

**PART II: FINDINGS AND CONCLUSIONS OF THIRD-PARTY DUE DILIGENCE REPORTS**

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| | |
|:---|:---|
| **Item 2.01** | **Findings and Conclusions of a Third Party Due Diligence Report Obtained by the Issuer** |

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Not applicable.

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| | |
|:---|:---|
| **Item 2.02** | **Findings and Conclusions of a Third-Party Due Diligence Report Obtained by the Underwriter** |

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Not applicable.

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the reporting entity has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | |
|:---|:---|
| Santander UK plc | Santander UK plc |
| (Securitizer) | (Securitizer) |
| By: | /s/ Alan Williams |
| Name: | Alan Williams |
| Title: | *Senior officer in charge of securitization of the securitizer* |

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Date: February 19, 2026