Completion of 2D Seismic

Borders & Southern Petroleum plc 08 June 2005 Embargoed until 07.00, 8 June 2005 Borders & Southern Petroleum plc First seismic survey completed Borders & Southern Petroleum plc (or 'the Company') (AIM: BOR), the international oil and gas exploration and production business, announces that it has successfully completed its 2D seismic survey within its 19,598 sq km offshore Falkland Islands acreage. The survey was carried out on the Company's behalf by Geophysical Service Incorporated, which used its vessel, the GSI Admiral, to acquire 2860km of 2D data. This comprised a regional grid over the entire licensed area along with an infill grid over a high-graded area of interest. The processing and interpretation of the seismic data will take place over the coming months. The results from the 2D interpretation will be used to decide whether a 3D seismic survey will be acquired prior to drilling the first well. Commenting on the seismic survey, Howard Obee, Borders & Southern's Chief Executive Officer said: 'This is a significant milestone for the Company. We have completed our first operated seismic survey on budget, without any HSE incidents and within less than a year from the Company's incorporation. This is an excellent result and reflects the fast-track exploration programme in the Falklands that we outlined at the time of our IPO. We now look forward to receiving the processed data so that we can fully evaluate these exciting Falkland Islands licences'. For further information please contact: Howard Obee Chief Executive Borders & Southern Petroleum plc Tel: 020 7661 9348 Simon Hudson / Richard Sunderland / Clemmie Carr Tavistock Communications Tel: 020 7920 3150 or 07966 477 256 Notes to Editors B&S was formed as a public limited company in June 2004. At that time, the Company submitted an application for its first project, offshore exploration acreage over 19,598 square kilometres of the Falkland Plateau sub-basin, southeast of the Falkland Islands. The Company was granted five production licences by the Governor of the Falkland Islands over this acreage with effect from 1 November 2004. This information is provided by RNS The company news service from the London Stock Exchange