Admission to Trading of Transferable Securities

SANTANDER UK PLC

(LEI: PTCQB104N23FMNK2RZ28)

STRUCTURED NOTE AND CERTIFICATE PROGRAMME

NOTIFICATION OF ADMISSION TO TRADING OF TRANSFERABLE SECURITIES

The following transferrable securities issued by Santander UK plc (the "Issuer") have today, 28 April 2026, been admitted to trading on the main market of the London Stock Exchange plc:

(1)  Issue of £2,660,622 Equity Index Linked Notes due 2031 (XS3254396370) (the "Series 1313 Notes"); and

(2)  Issue of £4,168,041 Equity Index Linked Notes due 2031 (XS3254389326) (the "Series 1314 Notes").

The Series 1313 Notes are issued under the Issuer's Notes and Certificates programme pursuant to a Base Prospectus dated 30 September 2025 as supplemented from time to time (the "Notes and Certificates Base Prospectus"), read together with the Final Terms of the Series 1313 Notes dated 19 January 2026.

The Series 1314 Notes are issued under the Issuer's Structured Note and Certificate programme pursuant to the base prospectus dated 14 March 2025 as supplemented from time to time and pursuant to the base prospectus dated 13 March 2026 as supplemented from the time to time" (the "Structured Note and Certificate Base Prospectus" and together with the Notes and Certificates Base Prospectus, the "Base Prospectuses"), read together with the Final Terms of the Series 1314 Notes dated 19 January 2026.

Full information on the Issuer and the offer of the Series 1313 Notes and the Series 1314 Notes is only available on the basis of the Notes and Certificate Base Prospectus or the Structured Note and Certificate Base Prospectus, as applicable, in each case read together with the relevant Final Terms.

The Base Prospectuses and the Final Terms have been published on the website of the Issuer at https://www.santander.co.uk/about-santander/investor-relations .

For further information, please contact:

The Structured Notes Desk: [email protected]

Please note that the information contained in the Base Prospectuses and the Final Terms may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Base Prospectuses and/or the Final Terms) only 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 Base Prospectuses and/or the Final Terms is not addressed. Prior to relying on the information contained in the Base Prospectuses, and/or the Final Terms, you must ascertain from the Base Prospectuses and/or the Final Terms 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.

The Final Terms referenced herein do not constitute an offer of securities for sale in the United States. The securities described herein have not been, and will not be, registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or under any relevant securities laws of any state of the United States of America, and may not be offered or sold to U.S. persons or to persons within the United States of America, except pursuant to an exemption from the Securities Act.

END