Dividend Notification

Thames Water PLC
5 September 2000

HALF YEAR INTEREST
SECURITY TITLE
*B Shs
MNEMONIC CODE         *TW.B
SEDOL CODE            *293-048
DIVIDEND AMOUNT       *1.88859p
PERIOD                *Half Year
PROVISIONAL EX DATE   *29-08-00
RECORD DATE           *04-09-00
PAYMENT DATE          *06-10-00
NOTES *Issuer Amendment to dividend amount. The amount should be 1.88859p and
not 2p as previously published. This replaces the details announced via the
Dividend Information List (RNS No.6934P) released on 21-08-00 at 07.39am. All
other details remain unchanged.