Total Voting Rights

UNITED UTILITIES PLC                              

                              TOTAL VOTING RIGHTS                              

                           Month end - 30 April 2008                           

In accordance with the Disclosure and Transparency Rule 5.6.1 United Utilities
PLC hereby notify the market that on 30 April 2008 the total number of voting
rights in the company is 881,652,797 and the total shares in issue are
881,652,797. No shares are held in Treasury.

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Notification of major interests in shares should be emailed to 
[e-mail] and faxed to 01925 237073.

Further information can be obtained from Jane Gilmore, Deputy Company Secretary
+ 44 1 925 237052.

United Utilities' 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 "UUPLY".