Director/PDMR Shareholding

UNITED UTILITIES GROUP PLC

DIRECTORS' AND PDMR INTERESTS IN SHARES

United Utilities Group PLC ("the Company") announces that it receivednotification on 18 December 2012 that the Trustee, Equiniti Share Plan TrusteesLimited, purchased ordinary shares of 5p each on behalf of the followingdirectors and persons discharging managerial responsibility on 17 December2012, to be held in accordance with the rules of the Company's HMRC approvedshare incentive plan. The shares were purchased at a price of 703 pence pershare.Director/PDMR No. of Shares purchased Sue Amies-King 21 Neil Colman 22 Gary Dixon 22 Steve Fraser 21 Simon Gardiner 22 Russ Houlden 22 Gaynor Kenyon 22 Steve Mogford 22 Janice Smethurst 22

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Further information can be obtained from Jane Gilmore, Deputy Company Secretary44 1 925 237052

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United Utilities Group's ordinary shares trade on the London Stock Exchange andits ADRs, each equal to two ordinary shares, trade over the counter under theTrading Symbol "UUGRY".