UK Onshore Drilling Update

Roc Oil Company Limited 20 December 2004 20 December 2004 ROC OIL COMPANY LIMITED ('ROC') STOCK EXCHANGE RELEASE UK ONSHORE DRILLING UPDATE ERRINGTON-1: EXPLORATION WELL, PEDL 028, ONSHORE UK (ROC: 100% & Operator) As at 6:00am on 19 December 2004 UK time, the Errington-1 exploration wildcat well was running in hole with a new bit prior to drilling ahead from 1,218m in directional hole. Errington-1 is located in PEDL 028 approximately 35 km west of Newcastle in northern England. The Errington-1 wildcat exploration well, which is targeting a potentially large gas prospect, is expected to reach the first objective horizon during late December 2004. Bruce Clement For further information please contact: Chief Operating Officer Dr John Doran on 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 Ann-Marie Wilkinson/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
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