AIM Rule 17 Notice

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ("MAR"). Upon the publication of this announcement via Regulatory Information Service ("RIS"), this inside information is now considered to be in the public domain. If you have any queries on this, then please contact Steve Boldy, the Chief Executive Officer of the Company (responsible for arranging release of this announcement).

Lansdowne Oil & Gas plc

AIM Rule 17 Notice

26th September 2018

Lansdowne Oil & Gas plc ("Lansdowne" or the "Company"), the North Celtic Sea focussed, oil and gas company, announces pursuant to the requirements of (v) of Schedule Two (g) to the AIM Rules for Companies, that it omitted to inform the market relating to developments regarding SeaEnergy plc ("SeaEnergy").

Current Lansdowne Non-Executive Director, John Aldersey-Williams and former Non-Executive Director, Steven Lampe, were both Directors of SeaEnergy when it entered administration on 2 June 2016. The Administration Process concluded on 1 June 2018 and SeaEnergy is now being dissolved.

For further information please contact:

Nicholas Tulloch +44 (0) 131 257 4634

Brandon Hill Capital

Joint Broker

Oliver Stansfield +44 (0) 203 463 5061 

Notes to editors:

About Lansdowne

Lansdowne Oil & Gas (LOGP.LN) is a North Celtic Sea focussed, oil and gas exploration and appraisal company quoted on the AIM market and head quartered in Dublin.

For more information on Lansdowne, please refer to www.lansdowneoilandgas.com