Update - Horse Hill

21 July 2014 Doriemus plc ("Doriemus" or the "Company") Update - Horse Hill Doriemus Plc (AIM: DOR) announces that Horse Hill Developments Ltd ("HHDL")received formal notification from the UK Department of Energy and ClimateChange ("DECC") on 17 July 2014 that: * The Secretary of State has granted the transfer and apportionment of rights of 65% of Licence PEDL 137 from Magellan Petroleum (UK) Limited to HHDL; and * The Secretary of State has granted approval of appointment of HHDL as Exploration Operator of Licence PEDL 137. These approvals and consents granted by the DECC are valid until 17 October2014, to enable HHDL to meet its obligation under the agreements in placebetween HHDL and Magellan Petroleum (UK) Limited to drill the Horse Hill-1 wellon Licence PEDL 137. The Horse Hill-1 well is proposed to have a total depth of 8,512 feet and istargeting a number of conventional stacked oil and gas targets. Doriemus has a binding agreement in place to own a direct 10% interest in HHDL,a special purpose company that owns a 65% participating interest andoperatorship of the Horse Hill Oil Field in the Weald Basin. Donald Strang, the Company's Chairman, commented: "The site construction works are progressing to plan and we look forward tospudding the Horse Hill-1 well." Enquiries: Doriemus plc +44 (0) 20 7440 0640Donald Strang/Hamish Harris Cairn Financial Advisers LLP +44 (0) 20 7148 7900Nominated Adviser and BrokerJames Caithie/Jo Turner/Carolyn Sansom