Holding(s) in Company

Pennon Group PLC
20 October 2004

PENNON GROUP PLC

FOR IMMEDIATE RELEASE

HOLDING IN COMPANY

Pennon has today received notification (by fax dated 19 October 2004) that at
the close of business on 15 October 2004 the interest of Morgan Stanley
Securities Ltd in the Ordinary shares of £1.11p each in Pennon Group Plc had
fallen below 3% of the issued share capital of the Company.

20 October 2004

www.pennon-group.co.uk


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