Director/PDMR Shareholding

UNITED UTILITIES GROUP PLC

DIRECTORS' AND PDMR INTERESTS IN SHARES

United Utilities Group PLC ("the Company") announces that it received
notification on 18 May 2010 that the Trustee, Equiniti Share Plan Trustees
Limited, purchased ordinary shares of 5p each on behalf of the following
directors and persons discharging managerial responsibility on 17 May 2010, to
be held in accordance with the rules of the Company's HMRC approved share
incentive plan. The shares were purchased at a price of 523.5 pence per share.

Director/PDMR                  No. of Shares    
                                 purchased      
                                                
Martin Bradbury                     29          
                                                
Alison Clarke                       28          
                                                
Charlie Cornish                     29          
                                                
Steve Fraser                        28          
                                                
Philip Green                        29          
                                                
Tom Keevil                          29          
                                                
Gaynor Kenyon                       29          
                                                
Tim Weller                          29          

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

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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".