Roc Oil Company Limited 13 December 2005 12 December 2005 Roc Oil Company Limited ("The Company") (ACN 075 965 856) Substantial Shareholders The Company has been notified of the following substantial shareholdings: - As at 8 December 2005, AMP Limited and its affiliates held 9,432.520 fully paid ordinary shares in the Company, representing 5.02 % of the total issued share capital of the Company For further information please contact: Dr John Doran Tel: +61-2-8356-2000 Fax: +61-2-9380-2635 E-mail: jdoran@rocoil.com.au Or visit ROC's website: www.rocoil.com.au Dr Kevin Hird General Manager Business Development Tel: +44 (0)207 586 7935 Fax: +44 (0)207 722 3919 Email: khird@rocoil.com.au Nick Lambert Bell Pottinger Corporate & Financial Tel: +44 (0)207 861 3232 This information is provided by RNS The company news service from the London Stock Exchange