Publication of Supplementary Offering Circular 

The following supplementary offering circular has been approved by the UK Listing Authority and is available for viewing:

Supplementary offering circular dated 7 August 2009 (the 'Supplement') to the offering circular dated 14 November 2008 (the 'Offering Circular'), relating to United Utilities PLC and United Utilities Water PLC's EUR 7,000,000,000 Euro Medium Term Note Programme (the 'Programme').

To view the full document, please paste the following URL into the address bar of your browser.

http://www.rns-pdf.londonstockexchange.com/rns/1046X_1-2009-8-7.pdf

The documents incorporated by reference into the Supplement are available for inspection at the Document Viewing Facility of the UK Listing Authority situated at the Financial Services Authority, 25 The North Colonnade, Canary Wharf, London E14 5HS, telephone 020 7066 1000.

For further information, please contact Phil Aspin, Treasurer, United Utilities Group PLC on +44 1925 237 136. 

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'.

DISCLAIMER - INTENDED ADDRESSEES

Please note that the information contained in the Supplement may be addressed to and/or targeted at persons who are residents of particular countries (specified in the Offering Circular for the Programme) only and is not intended for use and should not be relied upon by any person outside these countries and/or to whom the offer contained in the Offering Circular is not addressed. Prior to relying on the information contained in the Supplement you must ascertain from the Offering Circular whether or not you are part of the intended addressees of the information contained therein.

Your right to access this service is conditional upon complying with the above requirement.