UNITED UTILITIES GROUP PLC

Annual Report and Financial Statements

23 June 2025

United Utilities Group PLC announces that its Annual Report and Financial Statements (ARFS) for the year ended 31 March 2025 and the 2025 Notice of Annual General Meeting (Notice of Meeting) are now available for viewing, in accordance with Disclosure Guidance and Transparency Rule ("DTR") 6.3.5(3), on the Company's website at the following website addresses:

https://unitedutilities.annualreport2025.com/

and

https://www.unitedutilities.com/annual-general-meeting

respectively.

Copies of the ARFS and the Notice of Meeting in respect of the financial year ended 31 March 2025 will shortly be available for inspection at the National Storage Mechanism:

https://data.fca.org.uk/#/nsm/nationalstoragemechanism

United Utilities Group PLC announced its final results on 15 May 2025 (the announcement) in accordance with the financial reporting obligations of the Disclosure Guidance and Transparency Rules, the announcement can be viewed at:

https://www.unitedutilities.com/globalassets/documents/corporate-documents/2024-25-rns-annoucement.pdf

and which contained the material required by DTR 6.3.5 to be communicated to the media in unedited full text through a Regulator Information Service. The announcement is not a substitute for reading the 31 March 2025 ARFS in full. In particular, the following can be found in the ARFS on the pages stated: principal risks and uncertainties on pages 61 to 64, related party transactions on page 231 to 232 and the directors' responsibility statement on page 177.

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Further information can be obtained from:

Chris Laybutt, IR and Clean Energy Strategy Director - 07769 556858

Jennifer Platt, IR Manager - 07733 064907

Jane Gilmore, Deputy Company Secretary - 07717 702375