In conformity with the FSA’s Disclosure and Transparency Rules, Northern would like to notify the market of the following:

As of 30 June 2010 the Company's issued share capital consists of 91,812,701 ordinary shares of 5 pence each with voting rights. Northern does not currently hold shares in Treasury. Therefore, the total number of voting rights in Northern is 91,812,701.

The above figure may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the ordinary shares of Northern under the FSA’s Disclosure and Transparency Rules.

For further information please contact:

Northern Petroleum Plc
Tel: +44 (0) 20 7469 2900
Chris Foss, Company Secretary
Sophie Hull, Head of Corporate Communications

Cenkos Securities (NOMAD and Joint Broker)
Jon Fitzpatrick, Tel: +44 (0) 20 7397 8900
Ken Fleming, Tel: +44 (0) 131 220 6939

Jefferies International (Joint Broker)
Tel: +44 (0) 20 7029 8000
Chris Snoxall

Financial Dynamics
Billy Clegg / Edward Westropp
Tel: +44 (0) 20 7318 3113

Bishopsgate Communications
Tel: +44 (0) 20 7562 3350
Nick Rome / Michael Kinirons