Fourth Consent Requests relating to Super Senior Issuer Funding

Background

On 27 August 2025, Thames Water Utilities Limited ("TWUL") and Ofwat announced the agreement of scheduled payments ("Payment Plan") in relation to the penalty notices issued by Ofwat to TWUL on 28 May 2025 (the "Penalty Notices"). TWUL's announcement in respect of the Payment Plan can be found at the following link:

https://www.londonstockexchange.com/news-article/AW14/investigations-update-payment-plan/17201405

Fourth Consent Requests

Prior to making the first payment scheduled under the Payment Plan, TWUL and its subsidiary, Thames Water Super Senior Issuer PLC (the "Super Senior Issuer"), have today launched a fourth set of consent requests (the "Fourth Consent Requests") seeking the consent of the super senior creditors to designate the Payment Plan as an approved payment plan under the super senior liquidity facility (the "Facility") entered into between TWUL and the Super Senior Issuer.

The Fourth Consent Requests have a voting date of 19 September 2025 and follow three previous sets of consent requests which were approved by creditors in April, May and July 2025.

TWUL has so far drawn £872m of the initial £1.5bn available under the Facility.

TWUL continues to work closely with stakeholders to secure a market led solution.

Access to Documents

The Fourth Consent Requests are available through TWUL's investor relations website at https://www.thameswater.co.uk/about-us/investors/liquidity-extension-update.

STAKEHOLDERS ARE ENCOURAGED TO REVIEW THE CONSENT REQUESTS IN DETAIL THEMSELVES (COPIES OF WHICH ARE AVAILABLE AT HTTPS://WWW.THAMESWATER.CO.UK/ABOUT-US/INVESTORS/LIQUIDITY-EXTENSION-UPDATE) AND SEEK THEIR OWN LEGAL AND FINANCIAL ADVICE ^[1] SHOULD THEY HAVE ANY QUERIES IN RELATION TO THEIR CONTENTS.

^[1] Creditors can contact TWUL to receive details of existing creditor groups and their advisors