FOR IMMEDIATE RELEASE

Sirius Exploration Plc

(“Sirius Exploration” or the “Company”)

Issue of Shares

Further to the announcement made on 24 April 2008 regarding the £300,000 equity credit facility agreement with Duke Holdings Corporation Limited (“Duke”) Sirius Exploration Plc has issued 2,222,222 new ordinary shares at 2.25p per share. This will provide the Company with £50,000, before expenses, to provide additional working capital reserves to the Company.

The 2,222,222 new ordinary shares, which will represent 2.49 per cent of the enlarged issued share capital of the Company (89,235,973 ordinary shares), will rank pari passu in all respects with the existing ordinary shares in the Company.

Application has been made to the London Stock Exchange for the new ordinary shares to be admitted to trading on AIM and dealings in the new ordinary shares are expected to commence on 30 June 2008.

Contact:

Richard Poulden, Sirius Exploration Plc on 01453 511900 or 07769 721512

Roland Cornish, Beaumont Cornish Limited on 020 7628 3396.