3D Seismic Surveys in Celtic Sea

March 16 2011

Lansdowne Oil & Gas plc

3D Seismic Surveys in Celtic Sea

Lansdowne Oil & Gas, ("Lansdowne" or "the Company") is pleased to announce it has signed a Letter of Intent with Polarcus Limited ("Polarcus") for the acquisition of 3D seismic surveys over its Rosscarbery, Amergin and Midleton prospects in the Celtic Sea, offshore Ireland, covering approximately 300 square kilometres.

The Lansdowne survey is expected to commence in early July and will follow on from the 3D survey to be acquired over the Barryroe oilfield, operated by Providence Resources, in which Lansdowne has a 20% interest.

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About Lansdowne

Lansdowne is an exploration and appraisal oil and gas company listed in London on the AIM Market (Ticker: LOGP). Lansdowne holds a balanced portfolio of oil discoveries, low and moderate risk gas prospects near existing infrastructure and moderate risk oil prospects. The Company is focussed on the underexplored North Celtic Sea Basin which has proven petroleum systems in place for both oil and gas. For more information, visit the Company's website: www.lansdowneoilandgas.com

About Polarcus

Polarcus is a pure play marine geophysical company with a pioneering environmental agenda, specializing in high-end towed streamer data acquisition from Pole to Pole. Polarcus is launching a fleet of modern 3D seismic vessels using the innovative ULSTEIN X-BOW® design and incorporating advanced maritime technologies for improved operational efficiency with a reduced environmental footprint. Polarcus offers contract seismic surveys and multi client projects worldwide and has its principal office in Dubai, United Arab Emirates. For more information, visit www.polarcus.com