SANTANDER UK PLC
€35 BILLION GLOBAL COVERED BOND PROGRAMME
Publication of Final Terms - Series 87 and Series 88

The following final terms (the Series 87 and Series 88 Final Terms) are available for viewing:

Issue of Series 87 €500,000,000 Floating Rate Covered Bonds due 12 May 2027 (ISIN XS2823117556) and Series 88 €1,000,000,000 Fixed Rate Covered Bonds due 12 May 2031 (ISIN XS2823118018) (together, the Series 87 and Series 88 Covered Bonds) under the €35 billion Global Covered Bond Programme of Santander UK plc (the Programme).

To view the full Series 87 and Series 88 Final Terms documents, please click on or paste the following URL into the address bar of your browser:

http://www.rns-pdf.londonstockexchange.com/rns/1345P_1-2024-5-20.pdf

http://www.rns-pdf.londonstockexchange.com/rns/1345P_2-2024-5-20.pdf

A copy of the above Series 87 and Series 88 Final Terms has been submitted to the National Storage Mechanism and will shortly be available for inspection at: https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

The Series 87 and Series 88 Final Terms can also be viewed at: https://www.santander.co.uk/uk/about-santander-uk/debt-investors/santander-uk-covered-bonds.

Please see Annex 1 to this notice for additional information in relation to the Series 87 and Series 88 Covered Bonds.

For further information, please contact:

Medium Term Funding
Santander UK plc
2 Triton Square
Regent's Place
London NW1 3AN

Email: mtf@santander.co.uk

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Series 87 and Series 88 Final Terms and the base prospectus published in respect of the Programme on 5 March 2024 as supplemented on 30 April 2024 (the Prospectus) may be addressed to and/or targeted at persons who are residents of particular countries only (as further specified in the Prospectus) and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Series 87 and Series 88 Final Terms and the Prospectus is not addressed. Prior to relying on the information contained in the Series 87 and Series 88 Final Terms and the Prospectus you must ascertain from the Series 87 and Series 88 Final Terms and the Prospectus whether or not you are part of the intended addressees of the information contained therein. Your right to access this service is conditional upon complying with the above requirement.

ANNEX 1

ADDITIONAL INFORMATION IN RELATION TO SERIES 87 €500,000,000 FLOATING RATE COVERED BONDS DUE 12 MAY 2027 AND SERIES 88 €1,000,000,000 FIXED RATE COVERED BONDS DUE 12 MAY 2031

OPERATIONAL INFORMATION DOCUMENT

This Operational Information Document related to the Series 87 Final Terms dated 17 May 2024 (the Series 87 Final Terms) in respect of the issue of Series 87 €500,000,000 Floating Rate Covered Bonds due 12 May 2027 (ISIN XS2823117556) and Series 88 Final Terms dated 17 May 2024 (the Series 88 Final Terms) in respect of the issue of Series 88 €1,000,000,000 Fixed Rate Covered Bonds due 12 May 2031 (ISIN XS2823118018) (together, the Series 87 and Series 88 Final Terms).

This Operational Information Document has not been reviewed or approved by any competent authority for the purposes of the UK Prospectus Regulation or otherwise and does not form part of the Series 87 and Series 88 Final Terms for the purposes of the UK Prospectus Regulation. However, for all other purposes this Operational Information Document must be read in conjunction with the Series 87 and Series 88 Final Terms. Words and expressions which have a defined meaning in the Series 87 and Series 88 Final Terms or Base Prospectus dated 5 March 2024 as supplemented on 30 April 2024 and have the same meanings in this Operational Information Document.

DISTRIBUTION

(a) If syndicated, names of Joint Lead Managers:          Banco Santander, S.A.;

                                                                           HSBC Continental Europe;

                                                  Lloyds Bank Corporate Markets plc;

                                                                                                     Norddeutsche Landesbank -

                                                                                                     Girozentrale - ; and

                                                                                                     UniCredit Bank GmbH

(each a "Joint Lead Manager" and together, the "Joint Lead Managers")

(b) Date of Subscription Agreement:                             17 May 2024

(c) If not syndicated, name of relevant Dealer:              Not applicable

(d) U.S. Selling Restrictions:                                          Regulation S