Exercise of Options and TVR

Rockhopper Exploration plc
10 April 2008


                                                                              


10 April 2008


Rockhopper Exploration PLC ('the Company')


                    Issue of Equity and Total Voting Rights


Rockhopper Exploration plc announces that, following receipt of a Notice of
Exercise from Ambrian Partners Ltd, options have been exercised in respect of
238,095 new ordinary shares of 1p each in the Company ('Ordinary Shares') at a
price of 42p per Ordinary Share.


The option to purchase Ordinary Shares was granted on 9 August 2005, the date of
the Company's admission to trading on AIM.


Application has been made for the new Ordinary Shares to be admitted to trading
on AIM on or around 16 April 2008. The new Ordinary Shares will rank pari passu
with the existing ordinary share capital of the Company and have been allotted
and issued credited as fully paid.


Following admission, the total issued share capital of the Company with voting
rights will increase to 76,146,425 Ordinary Shares.


The above figure of 76,146,425 Ordinary Shares may be used by shareholders in
the Company as the denominator for the calculations by which they will determine
if they are required to notify their interest in, or a change in their interest
in, the share capital of the Company under the FSA's Disclosure and Transparency
Rules.



For further information, please contact:


Rockhopper Exploration plc              www.rockhopperexploration.co.uk
Sam Moody - Managing Director           01722 414 419


Aquila Financial Ltd                    www.aquila-financial.com
Peter Reilly                            0118 979 4100


Landsbanki Securities (UK) Limited
Tom Hulme / Sebastian Jones             020 7426 9000





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