Holding(s) in Company

Pennon Group PLC
31 December 2004


PENNON GROUP PLC

FOR IMMEDIATE RELEASE

HOLDING IN COMPANY


Pennon Group Plc has today received notification (by letter dated 29 December
2004) that the interest of The Royal Bank of Scotland Group plc and The Royal
Bank of Scotland plc in the Ordinary shares of £1.11p each in Pennon Group Plc
has fallen below 3% of the issued share capital of the Company.



31 December 2004


www.pennon-group.co.uk


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