Doriemus Regulatory News (DOR)

6 December 2013 Doriemus Plc ("Doriemus" or the "Company") Brockham Oil Field Update Doriemus Plc (AIM: DOR) is pleased to announce that the new seismicreprocessing and interpretation has now been completed on the proposed Brockhamside-track well planned for Q1 2014. In addition, the crestal target alone forthe side-track on the Brockham-4 well has a provisional volumetric STOOIP of3.57 million barrels of oil. The Brockham oil field in the Surrey district is currently producing 42 bopd of28 API oil. The Operator, Angus Energy No.3 Limited ("Angus Energy"), isplanning a well work-over programme this month on the producing Brockham-1well. This new interpretation for the proposed side-track well will be incorporatedin the Brockham competent person's report, which is currently being prepared. Donald Strang, the Company's Chairman, commented: "There is a significant reserve potential to pursue at Brockham which webelieve justifies the side-track planned for early 2014." For further information please contact: Doriemus plc +44 (0) 20 7440 0640Donald Strang / Hamish Harris Sanlam Securities UK Limited (Nominated Adviser and Broker) +44 (0) 20 7628 2200Simon Clements / Virginia Bull Competent Person's Statement: In accordance with AIM Rules - Guidance for Mining and Oil & Gas Companies, theinformation contained in this announcement has been reviewed and signed off byMr Iain Sutherland BSc (Mining and Petroleum Engineering), who has over 20years' experience as a petroleum engineer. Mr Sutherland is a Member of theSociety of Petroleum Engineers. He has read and reviewed the technicaldisclosure in this regulatory announcement. The technical disclosure in thisannouncement complies with the SPE/WPC standard. Notes to Editors Brockham Oil Field: The Brockham Oil Field was discovered by BP in 1987 when BP drilled theBrockham-1 well and initially flowed 95 bopd of 27.5 API crude from thePortland sands reservoir. Brockham is held under United Kingdom ProductionLicence PL 235. Brockham is owned by: • Angus Energy No.3 Limited (60% interest and Operator) • Terrain Energy Ltd (20% interest) • Doriemus (10% interest) • Brockham Energy (10% interest) The Brockham surface facilities are fully permitted and operational with onsiteoil storage facilities of 1,200 barrels. All production is currently sold to the Perenco refinery. Glossary:

STOOIP - stock-tank oil initially in place