Holding(s) in Company

Pennon Group PLC
17 August 2005


PENNON GROUP PLC

FOR IMMEDIATE RELEASE

HOLDING IN COMPANY

Pennon Group Plc has received notification (by fax and letter dated 15 August
2005) that Lansdowne Partners Limited Partnership, on behalf of client funds
that it manages, holds an interest in 9,603,037 Ordinary shares of £1.11p each
in Pennon Group Plc.

17 August 2005

www.pennon-group.co.uk


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