20 July 2007

Production Commences at First Well in New Oklahoma Project

Irvine, the AIM listed oil and gas exploration company, announced on 16 July 2007 that it had signed an agreement with Metro Energy Group Inc. (“Agreement”), subject to due diligence and arrangement of necessary funding, to purchase producing and prospective oil and gas acreage in Oklahoma and Kansas.

In advance of the completion of the Agreement, Irvine has received notification from its partners, Metro Energy Group Inc, that the Patriot 1-15 well, which will form part of the Company’s new Oklahoma project, has commenced production and is generating gas sales at 1.1MMCFD.

The Oklahoma legislative system includes the requirement for forced pooling of interests among adjoining mineral right owners. After forced pooling, Irvine will have a 30% working interest in the well on completion of the Agreement and this will raise the Company’s net production by 330MCFD to a total 730MCFD.

For further information please contact:

Irvine Energy plc
Aaron Close, Tel: +1 281 647 7770

Irvine Energy plc
Michael Frayne, Tel: +44 (0) 207 766 7500

Nabarro Wells & Co Ltd
Hugh Oram, Tel: +44 (0) 207 710 7400

St Brides Media & Finance
Hugo de Salis, Tel: +44 (0) 207 242 4477

St Brides Media & Finance
Felicity Edwards, Tel: +44 (0) 207 242 4477

Notes to editors

The Oklahoma legislative system requires mineral rights holders to aggregate their interests with adjoining mineral rights owners within defined 640 acre blocks. In the particular situation of Patriot 1-15, Irvine will own 50% of an interest of approximately 380 acres held by Metro Energy Group Inc. (net 190 acres to Irvine). The Company’s net holding will represent approximately 30% of the total 640 acre block within which the Patriot 1-15 well has been drilled.