Holding(s) in Company

Pennon Group PLC
29 December 2004


PENNON GROUP PLC

FOR IMMEDIATE RELEASE

HOLDING IN COMPANY



Pennon Group Plc has today received notification (by letter dated 22 December
2004) that The Royal Bank of Scotland Group plc for themselves and on behalf of
The Royal Bank of Scotland plc now holds 4,434,302 Ordinary shares of £1.11p
each in Pennon Group Plc representing 3.47% of the issued share capital of the
Company.


29 December 2004


www.pennon-group.co.uk


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