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9:03AM 08/09/2010

LATEST NEWS

03/09/2010 - Appointment of CFO

San Leon, the oil and gas exploration and development company focused on projects in Poland, Ireland, Morocco and Netherlands, is pleased to announce the appointment of Vincent Barry as Chief

27/08/2010 - Board Appointments

San Leon is delighted to announce the appointments to the Board of Dr John Buggenhagen as Director of Exploration and Daniel Martin as a Non Executive Director. Both of these

23/08/2010 - Slyne 3D Seismic Acquisition Update

The Ramford Vanguard left Killybegs, August 3rd and successfully completed the 3D acquisition over the Slyne licence on August 17th at a cost of just under $6 million dollars. (More)

03/08/2010 - Placing

San Leon, the international group focused on the exploration and production of oil and gas projects in Europe and North Africa, is pleased to announce that it has conditionally placed

06/07/2010 - Seismic survey – Atlantic Margin, West coast of Ireland

San Leon is pleased to announce that it has awarded PGS Ventures AS ("PGS"), a subsidiary of Petroleum Geo-Services ASA Group, a contract to carry out a 300 sq. kms.

RESEARCH INFO

02/06/2010 - Fox Davies Capital issue report on San Leon "Dealers and Drillers"

Fox Davies Capital today (June 2nd 2010) published a report on San Leon Energy (SLE.L, LSE:SLE, LON:SLE) entitled "Dealers And Drillers".

Talisman Focus on Unconventional Resources in Poland

http://naturalgasforeurope. com/talisman-to-focus-on- unconventional-resources.htm

European shale reserves could rival USA

http://naturalgasforeurope. com/european-shale-reserves- could-rival-usa.htm#more-1219

Gas Production Update August 19, 2009

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Commercial delivery of production gas from Nichols #1 Well. Production at 1.3mmcf per day 3 more wells to be drilled on field Targeted total reserves of 5bcf San Leon Energy is pleased to advise that it commenced commercial delivery of the gas production from its first well in Palo Pinto County, Texas. As a follow up of the discovery in the Nichols # 1 well, notified on the 6th of July 2009, the company can now confirm that the gas pipeline has been completed and a commercial agreement is in place to sell the gas from the 17th of August. A 2.3 kilometre pipeline has been installed which will also accommodate the output from three other well sites to be drilled in the vicinity this autumn.   Oisin Fanning, Chairman of San Leon commented "From the outset, our objective was to take advantage of low risk exploration in the USA to generate positive cash flow. I look forward to the expansion of this project and drilling three further wells which should further prove up reserves and the significant monetary value of this project. We are also delighted to illustrate to the market and wider industry our ability to operate to plan. We have shown that we can run through the cycle of exploration, through to production and monetisation of one of our projects. This gives us confidence that we can repeat the process on the higher impact projects in our portfolio" August 19th 2009 For further information contact: San Leon Energy Plc Oisin Fanning, Chairman Philip Thompson, Chief Executive Officer Tel: + 353 1291 6292 Arbuthnot Securities Nick Tulloch Andrew Fairclough Tel: +44 (0) 20 7012 2000 Fox Davis Capital Jason Bahnsen Oliver Stanfield Tel: +44 (0) 20 7936 5230 College Hill Associates Paddy Blewer Nick Elwes Tel: +44 (0) 207 457 2020   Qualified person Philip Thompson has over twenty five years experience in the oil & gas industry. He has an M.Sc. in Geophysics from Southern Methodist University and a B.Sc. in Geophysics from Texas A&M University.