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 December 2009 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 December
2009, 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 501.0 pence per
share.

Director/PDMR                  No. of Shares    
                                 purchased      
                                                
Martin Bradbury                     30          
                                                
Alison Clarke                       30          
                                                
Charlie Cornish                     29          
                                                
Steve Fraser                        30          
                                                
Philip Green                        30          
                                                
Tom Keevil                          30          
                                                
Gaynor Kenyon                       30          
                                                
Tim Weller                          30          

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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".