Exhibit 99.6
UNITED UTILITIES PLC
DIRECTORS’ AND PDMR INTERESTS IN SHARES
United Utilities PLC (“the Company”) announces that it received notification on 20 March 2006 that the Trustee, Hill Samuel ESOP Trustees Limited, purchased ordinary shares of £1 each on behalf of the following directors and persons discharging managerial responsibility on 17 March 2006, to be held in accordance with the rules of the Company's Inland Revenue approved share incentive plan. The shares were purchased at a price of 699.5 pence per share.
| Director | No. of Shares purchased | |||
| JOHN ROBERTS | 21 | |||
| SIMON BATEY | 21 | |||
| GORDON WATERS | 21 | |||
| CHARLES CORNISH | 20 | |||
| TIM RAYNER | 21 | |||
| LINDA BOOTH | 21 |
Further information can be obtained from Paul Davies, Assistant Company Secretary + 44 1 925 237051.
United Utilities’ ordinary trade on the London Stock Exchange and its ADRs, each equal to two ordinary shares, trade on the New York Stock Exchange under the Trading Symbol “UU”.
