Director/PDMR Shareholding

Portland Gas plc
03 April 2008


                                Portland Gas plc

                             Director Shareholdings

Portland Gas plc (the 'Company') was informed today that Mr Walter Roberts, a
Director, has transferred to his wife 320,000 ordinary shares at 314.75p each.

Simultaneously, Mr Roberts' two daughters have each sold to a Will Trust that Mr
Roberts administers for them 50,000 ordinary shares also at 314.75p each. All of
these transfers are part of a reorganisation of his share holding.

Mr Roberts' total beneficial shareholding in Portland Gas remains unchanged at
1,026,750 ordinary shares, representing 1.514% of the issued and voting share
capital of the Company.

Enquiries:

Andrew Hindle/Craig Gouws             Tel: [phone]
Portland Gas plc

Jonathan Wright/Sarah Jacobs          Tel: [phone]
Seymour Pierce Limited



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