MOG acquisition - no further consideration payable

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, IN WHOLE OR IN PART, IN OR INTO OR FROM ANY RESTRICTED JURISDICTION OR WHERE IT WOULD CONSTITUTE A VIOLATION OF THE RELEVANT LAWS OF ANY SUCH JURISDICTION

RECOMMENDED CASH, SHARE AND CONTINGENT CONSIDERATION OFFER BY ROCKHOPPER EXPLORATION PLC ("ROCKHOPPER") FORMEDITERRANEAN OIL & GAS PLC ("MOG")

confirmation no contingent consideration is payable

Further to the announcement made by Rockhopper on 9 July 2014, Rockhopper appointed ERC Equipoise Limited to produce a Competent Person's Report to determine the 2C Contingent Resources estimated to be potentially recoverable from the HQ Prospect. ERC Equipoise Limited has provided its report to Rockhopper which confirms that no Liquid Hydrocarbons have been encountered in the HQ Prospect. Therefore, the Agreed Resources are nil and no Contingent Consideration is payable.

Terms defined in the scheme document dated 20 June 2014 have the same meanings where used in this announcement.

Enquiries

Rockhopper Exploration plc

Tel: 0207 016 9571

Sam Moody - Chief Executive (via Vigo Communications)

Stewart MacDonald - Chief Financial Officer

Canaccord Genuity Limited (NOMAD and Joint Broker)

Tel: 0207 523 8000

Henry Fitzgerald-O'Connor

Vigo Communications

Tel: 0207 016 9571

Peter Reilly