Holding in Company

Thames Water PLC
12 October 2000


Schedule 10 - Notification of Major Interests in Shares

1   Name of company:
Thames Water Plc

2   Name of shareholder having a major interest:
The Capital Group Companies, Inc. on behalf of its affiliates, including
Capital International Limited and Capital Research and Management Company.

3   Please state whether notification indicates that it is in respect of
holding of the shareholder named in 2 above or in respect of a non-beneficial
interest or in the case of an individual holder if it is a holding of that
person's spouse or children under the age of 18:
Non-beneficial interest

4   Name of registered holder(s) and, if more than one holder, the number of
shares held by each of them:
Capital Research and Management Company - 19,913,681 shares
Capital International Limited - 18,058 shares

5   Number of shares/amount of stock acquired:


6   Percentage of issued class:


7   Number of shares/amount of stock disposed:
1,221,852

8   Percentage of issued class:
0.35%

9   Class of security:
23p ordinary shares

10  Date of transaction:
9 October 2000

11  Date company informed:
11 October 2000

12  Total holding following this notification:
19,931,739

13  Total percentage holding of issued class following this notification:
5.67%

14  Contact name for queries:
Clare O'Connell

15 Contact telephone number:
0118 939 9240

16  Name of company official responsible for making notification:
Clare O'Connell
Company Secretarial Manager

17  Date of notification:
12 October 2000





Additional Information: