Substantial ShareholderNotice

10 Apr 2007 08:00

Roc Oil Company Limited10 April 2007 10 April 2007 Roc Oil Company Limited ("The Company") Substantial Shareholder Notice The Company has been notified of the following change in substantialshareholding: - As at 30 March 2007, Commonwealth Bank of Australia and its affiliates held 18,242,811 fully paid ordinary shares in the Company, representing 6.12% of the total issued share capital of the Company. For further information please contact: Dr John Doran onTel: +61-2-8356-2000Fax: +61-2-9380-2635Email: jdoran@rocoil.com.au Or visit ROC's website: www.rocoil.com.au Dr Kevin HirdGeneral Manager Business DevelopmentTel: +44 (0)207 586 7935Fax: +44 (0)207 722 3919Email: khird@rocoil.com.au Nick LambertBell Pottinger Corporate & FinancialTel: +44 (0)207 861 3232 This information is provided by RNS The company news service from the London Stock Exchange