Issue of Equity

23 September 2011

Sirius Petroleum plc

("Sirius" or the "Company")

Issue of Equity

Sirius Petroleum confirms that, further to the announcement made on 14 September 2011, the 12,500,000 subscription shares have today been admitted to trading on AIM. With effect from today Sirius will have 754,226,330 ordinary shares in issue. Sirius does not hold any shares in treasury and therefore 754,226,330 may be used as the denominator for the calculation by which shareholders may determine if they are required to notify their interests in, or change their interest in, the share capital of the Company.

Ends

Enquiries:

Sirius Petroleum plc +44 (0) 20 7451 9800

Ed Johnson

Strand Hanson Limited (Nominated Adviser and Broker) +44 (0) 20 7409 3494

James Harris / James Spinney

Gable Communications +44 (0) 20 7193 7463

John Bick / Justine James