Hague and London Oil Regulatory News (HNL)

WESSEX EXPLORATION PLC

(AIM: WSX)

Southern England Update

Wessex Exploration PLC ("Wessex Exploration" or "the Company") notes the ASX announcement of Norwest Energy NL ("Norwest") in respect of the successful completion of seismic work undertaken on PEDL 239 in Southern England, in which Wessex Exploration holds a 25% interest:

 "Norwest Energy NL's (NWE) wholly owned subsidiary NWE Mirrabooka (UK) Pty.Ltd. has completed the acquisition of a 54km seismic survey over the Razorback prospect located onshore at PEDL 239 on the Isle of Wight in the Wessex Basin, Southern England

Tesla Exploration International Ltd (Tesla) were contracted to acquire the 2D seismic survey which took 13 recording days to complete, was within budget and had no significant health, safety or environmental issues.

The vibroseis source provided excellent data quality, a significant improvement on previous surveys. This was due in part to the high spec equipment used to acquire the data as well as extensive parameter testing at the beginning of the survey to optimise the acquisition parameters.

Tesla have now been contracted to process the data. This is expected to be completed within 3 weeks. When processing is complete, the seismic data will be combined with existing 2D seismic to update Norwest's mapping over the Razorback prospect. This data set should provide the detail required to confidently demonstrate the prospects structural integrity.

The Razorback prospect is located in a central position on the Isle of Wight and is the highest ranked prospect in PEDL 239. Razorback is located relatively close to the giant Wytch Farm field. The primary target is the Triassic Sherwood Sandstone reservoir and there is a secondary target, the Jurassic Oolite reservoir. Razorback is estimated to contain 43 MMbls oil in place (P50).