3 March 2025

UNITED UTILITIES GROUP PLC

Appointment of director

United Utilities Group PLC announces that Ian El-Mokadem has been appointed as an independent non-executive director with effect from 1 June 2025. On joining the Board, Ian will be appointed as a member of the following Board Committees: Nomination, Audit and Compliance.

United Utilities Chairman, Sir David Higgins said: "We are pleased Ian has agreed to join the Board. The Board will benefit from his leadership experience of successfully transforming businesses and embracing technology to improve customer services, and his experience of regulated environments and delivering essential public services from his executive leadership roles at Centrica and Compass Group will be invaluable as we deliver our ambitious £13bn investment plan for the North West. Having served on the board of Serco since 2017, Ian's non-executive experience will strengthen the Board's overview role supporting our continued delivery for the region's communities, environment and stakeholders. I look forward to welcoming Ian to the Board."

Ian recently retired as CEO of AIM listed RWS Holdings plc, a global market leader in the provision of technology enabled language, content and intellectual property services to clients across a range of industries including technology, life sciences, legal and financial services, a position held since 2021. Previous roles include CEO of V. Group and Exova Group plc and Group Managing Director, UK and Ireland of Compass Group plc. During his early career, Ian spent eight years with Centrica plc, including launching and then leading the telecoms business, prior to that in strategy consulting with Andersen Consulting.

Ian is a non-executive director of Diploma plc and of Serco Group plc.

Ian will be appointed as a non-executive director of United Utilities Water Limited with effect from 1 June 2025.

There are no further details to disclose under UKLR 6.4.8 (2) to (6) in relation to Ian El-Mokadem.

-0-

United Utilities contacts:

LEI 2138002IEYQAOC88ZJ59

Classification - Directorate change

United Utilities Group's ordinary shares trade on the London Stock Exchange and its ADRs, each equal to two ordinary shares, trade over the counter under the Trading Symbol "UUGRY".