Update, Horse Hill-1, Weald Basin UK

18 September 2014 Doriemus plc ("Doriemus" or the "Company") Update Horse Hill-1, Weald Basin UK Doriemus Plc (AIM: DOR) today confirms that drilling operations on the HorseHill-1 well are continuing as planned with the 20-inch surface casing havingbeen set successfully at 84 feet below ground level. Operations are continuingat the site and further news will be issued as appropriate. The Company is also pleased to confirm that Magellan Petroleum Corporation("Magellan") have now confirmed that they will not proceed with their option toacquire additional logs beyond those required for the conventional targets inthe Horse Hill-1 well. This will assist Horse Hill Developments Ltd ("HHDL") tocomplete the well on schedule in about six weeks. Additionally, the original binding agreements previously put in place forDoriemus to own a 10% interest in HHDL have been converted to a definitiveInvestment Agreement confirming the Company owns 10% of HHDL. David Lenigas hasalso been appointed as Chairman of HHDL. Donald Strang, the Company's Chairman, commented; "We are pleased with the good progress being made with this well and also withthe support we have received from our partners and the local community. Weanticipate an exciting few weeks ahead as the well advances towards theconventional oil targets in the Jurassic. We also welcome the appointment of Mr Lenigas to the HHDL board as he brings awealth of experience and leadership to this exciting project." HHDL is a special purpose company which owns a 65% participating interest andoperatorship of onshore licences PEDL 137 and the adjacent licence PEDL 246 inthe UK Weald Basin. The participants in the Horse Hill-1 well are HHDL with a65% working interest and Magellan with a 35% interest. For further additional information please contact: Doriemus plc +44 (0) 20 7440 0640Donald Strang/Hamish Harris Cairn Financial Advisers LLP +44 (0) 20 7148 7900Nominated Adviser and BrokerJames Caithie Square1 Consulting +44 (0) 207 929 5599David BickMark Longson