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 20 December 2011 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 19 December
2011, 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 594.07 pence per
share.

Director/PDMR                  No. of Shares    
                                 purchased      
                                                
Neil Colman                         25          
                                                
Gary Dixon                          51          
                                                
Steve Fraser                        51          
                                                
Simon Gardiner                      25          
                                                
Russ Houlden                        25          
                                                
Steve Mogford                       25          
                                                
Paul Worthington                    25          

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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".