Director's Notification of Dealing in Shares

Thames Water PLC
11 July 2000


Thames Water Plc hereby gives notice that it has been informed today that on
10 July 2000 the Trustee of the Thames Water Long Term Restricted Share Plan
and the Thames Water Cash/Share Bonus Plan ('the Schemes') released 2,237
ordinary shares in the Company to cover the entitlement of Bill Alexander, a
Director of Thames Water Plc, under the Thames Water Cash/Share Bonus Plan. 
Mr Alexander sold 889 shares at a sale price of £8.575 per share to pay the
tax liability due on the release.

The Thames Water Plc Directors Bill Alexander, Chris Bunker and David Badcock,
as potential beneficiaries under the Schemes along with other senior Thames
Water executives, have a non-beneficial interest in some of the remaining
shares held by the Trustee, contingent upon performance conditions being met.
Following the above transactions 152,420 shares are held by the Trustee.

Mr Alexander's total holding following this notification has increased by
1,348 from 17,702 ordinary shares to 19,050 ordinary shares.