Ernest Site Survey

Rockhopper Exploration plc
28 November 2007


Press Release

For immediate release: 28 November 2007

Rockhopper Exploration plc ('Rockhopper' or the 'Company')

                       
                        Rockhopper commissions site survey

Rockhopper, the North Falkland Basin oil and gas exploration company, is pleased
to announce that it has commissioned Wavefield Inseis to conduct a site survey
over its Ernest prospect in licence PL024. The site survey is a necessary part
of preparatory work ahead of drilling. Rockhopper is already conducting an
Environmental Impact Assesment over licences PL023 and PL024 in readiness for
drilling.

The Ernest prospect is a relatively low risk independent 4-way dip closed
structure in 160m of water approximately 100km offshore the Falkland Islands. 
The robust 4-way closure has an areal extent of some 2880 acres, within a total 
area of over 6,000 acres.

Sam Moody, Managing Director commented:

'We are very pleased that Wavefield are able to perform this site survey over
Ernest, which is currently the lowest risk prospect in our portfolio. The 3D
seismic in our licences PL032 and PL033 means that we should not require
additional site surveys in that area to prepare for drilling.'


NB: This statement has been approved by the Company's geological staff who
include David Bodecott (Exploration Director), who is a Member of Petroleum
Exploration Society of Great Britain (PESGB) and the American Association of
Petroleum Geologists (AAPG) with over 30 years of experience in petroleum
exploration and management, for the purpose of the Guidance Note for Mining, Oil
and Gas Companies issued by the London Stock Exchange in respect of AIM
companies, which outline standards of disclosure for mineral projects.


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                               020 7202 2601
Yvonne Fraser                              020 7202 2609

Landsbanki Securities (UK) Limited - Corporate Finance
Tom Hulme                                  020 7426 9000



Notes to editors

www.rockhopperexploration.co.uk

The Rockhopper Group started trading in February 2004 to invest in and carry out
an offshore oil exploration programme to the north of the Falkland Islands. The
Group, floated on AIM in August 2005, is currently the largest licence holder in
the North Falkland Basin and has a 100 per cent. interest in four offshore
production licences which cover approximately 5,800 sq. km. These licences have
been granted by the Falkland Islands government.




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