Mahesh Aditya to become Santander UK (SNTUF) Chief Executive Officer in March 2026

Rhea-AI Filing Summary

Santander UK has appointed Mahesh Aditya as Chief Executive Officer of Santander UK Group Holdings plc and Santander UK plc, effective 1 March 2026. He joins from Banco Santander, where he has served as Group Chief Risk Officer since 2023 and previously held senior roles in the US, including CEO of Santander Consumer USA from 2019 to 2023. With more than 30 years of experience at major financial institutions such as Citi, JPMorgan Chase & Co and Capital One, he was appointed to the Santander UK boards on 1 October 2025.

Insights

Banking sector governance analyst

Santander UK names experienced risk-focused executive Mahesh Aditya as its new CEO.

The appointment of Mahesh Aditya as CEO of Santander UK Group Holdings plc and Santander UK plc concentrates leadership in an executive with deep risk-management and consumer finance experience. His background includes serving as Group Chief Risk Officer at Banco Santander and leading Santander Consumer USA.

His prior roles at global banks such as Citi, JPMorgan Chase & Co and Capital One suggest familiarity with large-scale retail and consumer credit businesses. The move also continues internal succession from within the wider Santander group, which can support strategic continuity while potentially reinforcing risk discipline.

He will assume the CEO role on 1 March 2026, after having joined the Santander UK boards on 1 October 2025. Subsequent disclosures in company communications may provide more detail on any strategic priorities or organizational changes introduced under his leadership.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 For the month of January, 2026 Commission File Number 001-14928 SANTANDER UK PLC (Translation of registrant's name into English) 2 Triton Square, Regent's Place, London NW1 3AN, England (Address of principal executive office) Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F . . . .X. . . . Form 40-F . . . . . . . .

Santander UK - Appointment of new Chief Executive Officer The Boards of Santander UK announced today, 30 January 2026, the appointment of Mahesh Aditya as Chief Executive Officer of Santander UK Group Holdings plc and Santander UK plc with effect from 1 March 2026. Mahesh joins from Banco Santander, where he has been Group Chief Risk Officer since 2023 and prior to that spent six years at Santander in the US, as Chief Risk Officer, Santander US for two years, followed by CEO of Santander Consumer USA from 2019 to 2023.  He has over 30 years’ financial services experience having held positions across a range of blue-chip brands including Citi, JPMorgan Chase & Co and Capital One.  Mahesh was appointed to the Santander UK Boards (Santander UK Group Holdings plc and Santander UK plc) on 1 October 2025. - Ends - Additional information about Santander UK Santander UK is a financial services provider in the UK that offers a wide range of personal and commercial financial products and services. The bank serves its customers via a nationwide branch network, telephone, mobile and online banking. Santander UK is subject to the full supervision of the FCA and the PRA in the UK. Santander UK plc customers’ eligible deposits are protected by the FSCS in the UK.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. SANTANDER UK PLC By: / s / Roz Rule Roz Rule Company Secretary Dated: 30 January, 2026

FAQ

Who has been appointed as the new CEO of Santander UK (SNTUF)?

Santander UK has appointed Mahesh Aditya as Chief Executive Officer of Santander UK Group Holdings plc and Santander UK plc, bringing over 30 years of financial services experience across major global banks and the wider Santander group.

When will Mahesh Aditya start as CEO of Santander UK (SNTUF)?

Mahesh Aditya will become CEO of Santander UK Group Holdings plc and Santander UK plc with effect from 1 March 2026. Until then, he has already been serving on the Santander UK boards, having joined them in October 2025.

What is Mahesh Aditya’s background before becoming Santander UK CEO?

Before this role, Mahesh Aditya was Group Chief Risk Officer at Banco Santander and previously CEO of Santander Consumer USA. He has also held senior positions at Citi, JPMorgan Chase & Co and Capital One, giving him broad global banking experience.

What roles will Mahesh Aditya hold within the Santander UK group?

Mahesh Aditya will serve as Chief Executive Officer of both Santander UK Group Holdings plc and Santander UK plc. He was appointed to the boards of these two entities on 1 October 2025, ahead of assuming the CEO position.

Is Santander UK (SNTUF) regulated and are deposits protected?

Santander UK is fully supervised by the FCA and PRA in the UK. Eligible customer deposits with Santander UK plc are protected by the UK’s Financial Services Compensation Scheme (FSCS), providing an additional safeguard for retail depositors.

What services does Santander UK (SNTUF) provide to its customers?

Santander UK offers a wide range of personal and commercial financial products and services. Customers are served through a nationwide branch network and digital channels, including telephone, mobile, and online banking across the UK market.