Spanish Operational Update

For Immediate Release (7am GMT)

13 April 2011

LENI GAS AND OIL PLC

("LGO" or the "Company")

Spanish Operational Update

Leni Gas & Oil plc, the AIM listed international oil and gas production, development and exploration Company, today announces final details regarding its planned work-over operations at its 100% owned Ayoluengo and Hontomin Oilfields in Northern Spain.

The Company's Spanish subsidiary Compania Petrolifera de Sedano S.L. has signed contracts and agreed work scopes with both the Société de Maintenance Pétrolière ("SMP") and Services Pétrolièrs Schlumberger ("Schlumberger"). The Company has also received all outstanding permits and authorisations from the Spanish authorities in order to commence the planned work-over programme announced on the 17th March 2011.

Schlumberger will provide all necessary wireline logging and perforating services, as well as cementing services if required, and SMP will supply their 80-tonne "SMP-2" drilling unit which will be used in conjunction with the Company owned Cardwell 45-tonne rig to ensure overall smooth operations. Mobilisation to the field will commence shortly and the programme is expected to get underway on the 26th April 2011.

As announced in March, work will initially focus on six high productivity wells in the crestal area of the Ayoluengo Field (Ayo-4, 5, 32, 36, 37and 46) and the perforation of approximately 45 metres of previously untapped reservoir in the Hontomin-2 well on the nearby Hontomin Field. Each Ayoluengo well will be cleaned out, re-perforated over existing intervals, some new intervals will be perforated and the casing and production tubulars will be repaired. Additional cementing operations will be selectively undertaken to improve water shut-off where this is required. A progressive cavitation pump (PCP) will be installed in well Ayo-37 to increase the production and reliability of that well. Depending on initial results up to four additional wells (Ayo-18, 35, 38 and 44) may be added to the programme at Ayoluengo.

The estimated production capacity from the work-over programme ranges from 300 to over 500 barrels oil per day. The initial seven well programme is expected to be completed within 60 days.

Neil Ritson, LGO Chief Executive commented:

 "We are very pleased to be undertaking this work which will immediately benefit both the production levels and cash flow from our Spanish operations. This is of course especially beneficial at a time of high oil prices. Successful results from this initial programme will lead to further investment in the field facilities and the completion of additional wells."

Competent Person's Statement:

The information contained in this announcement has been reviewed and approved by Neil Ritson, Chief Executive Officer and Director for Leni Gas & Oil Plc who has 35 years of relevant experience in the oil industry. Mr. Ritson is a member of the Society of Petroleum Engineers, an Active Member of the American Association of Petroleum Geologists and is a Fellow of the Geological Society of London.

Enquiries:

Leni Gas & Oil plc

David Lenigas, Executive Chairman

Neil Ritson, Chief Executive Officer

Tel +44 (0) 20 7016 5103

Panmure Gordon plc

Katherine Roe / Hannah Woodley

Tel +44 (0)20 7459 5744

Beaumont Cornish Limited

Roland Cornish / Rosalind Hill Abrahams

Tel +44 (0) 20 7628 3396

Pelham Bell Pottinger

Mark Antelme / Henry Lerwill

Tel + 44 (0)20 7861 3232

NOTES TO EDITORS

Leni Gas & Oil Plc is an international oil and gas exploration, development and production company headquartered in London, trading on the London Stock Exchange's AIM index. LGO's strategy is to acquire projects and businesses within the oil and gas sector that contain a development premium which can be unlocked through a combination of financial, commercial, and technical expertise.

LGO operates a low risk portfolio of production expansion assets in the US Gulf of Mexico, Spain and Trinidad, and holds non-operated exploration acreage Malta. LGO's assets have significant play upside using strategies which leverage novel extraction technologies and proven production enhancement techniques. LGO specifically targets near term production with upside exploitation potential and manages its portfolio to ensure all assets have accelerated incremental reserves and production enhancement programmes.