Director/PDMR Shareholding

UNITED UTILITIES GROUP PLC                           

                            PERFORMANCE SHARE PLAN                             

                                 30 MARCH 2011                                 

The following contingent option award was granted in the UK on 28 March 2011 to
the undernoted director and person discharging managerial responsibility
pursuant to the rules of the United Utilities Group 2008 Performance Share Plan
as approved by the shareholders at the General Meeting on 1 July 2008. The
figures reflect the maximum number of shares over which the option might be
exercised. The actual number will depend upon the extent to which the
established performance conditions are satisfied over the performance period.
Under the rules, the awards are subject to uplift for notional dividends made
or paid during the performance period. Accordingly, the original award is
uplifted by 1863 notional dividend shares in respect of the dividend of 23.13
pence per share paid on 2nd August 2010 and a further 898 notional dividend
shares in respect of the dividend of 10 pence per share paid on 2nd February
2011.

Name of director  No. of     Price      Price         Performance period    
/senior manager  Ordinary  paid for   payable on                            
  discharging     shares    award £   exercise £                            
   managerial     awarded                                                   
responsibilities                                                            
                                                                            
Russ Houlden        47,578    nil        nil       01/04/2010 to 31/03/2013 
                                                                            
Total               47,578                                                  

                            ----------------------                             

Further information can be obtained from Jane Gilmore, Deputy Company Secretary
on 01925 237051

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".