Rockhopper Regulatory News (RKH)

Rockhopper Exploration plc

(the "Company")

 Prospective Resources Update

A presentation showing the Company's current interpretation of the Sea Lion Main Complex along with the locations of Caspar, Kermit, the Lower Fan, Chatham and potential future drilling locations, is available on the Company website: www.rockhopperexploration.co.uk

Enquiries:

Rockhopper Exploration plc

Sam Moody - Chief Executive

Tel. +44 (0)20 7920 2340 (via M: Communications)

M: Communications

Patrick d'Ancona or Ben Simons

Tel. +44 (0)20 7920 2340

Canaccord Genuity Limited

Charles Berkeley / Henry Fitzgerald-O'Connor

Tel. +44 (0) 20 7050 6500