LAUNCH OF ANCILLARY AMENDMENTS STID PROPOSAL

SW (FINANCE) I PLC

Released 09 September 2025

SW (Finance) I PLC

09 September 2025

SW (Finance) I plc is announcing today that Southern Water Services Limited has launched the Ancillary Amendments STID Proposal referred to in its announcement of 8 July 2025 with a STID Voting Date of no later than 23 September 2025.

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For further information, please contact Stuart Ledger (Group CFO) at:

Address:          Southern House, Yeoman Road, Worthing, BN13 3NX, United Kingdom

Tel:                  01903 272 611

Email:              [email protected]

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