Holding(s) in Company

18th May 2006 10:20

For immediate release: 18 May 2006 Northern Petroleum Plc ("the Company") Notification of Shareholding The Board of Northern Petroleum Plc has today received notification fromArtemis Investment Management Limited that Artemis Special Situations is thebeneficial owner of 1,767,000 ordinary shares, which represents 3.28% of theissued ordinary share capital of the Company. -Ends- For further information please contact:Northern Petroleum PlcChris Foss, Finance DirectorTel: +44(0)20 7743 6080InvestecMichael AnsellTel: +44(0)20 7597 5000Panmure Gordon & CoKatherine RoeTel: +44(0)20 7459 3600Hansard CommunicationsChris RobertsBen SimonsTel. +44(0)20 7245 1100Further information on Northern Petroleum Plc is available via our website,www.northpet.comENDNORTHERN PETROLEUM PLC

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