Independent Report, Brockham Oil Field, UK

28 February 2014 Doriemus Plc ("Doriemus" or the "Company") Independent Report, Brockham Oil Field, UK Rig booked for Brockham side track well. Doriemus Plc (AIM: DOR) today announces the independent evaluation report byRPS Energy Consultants Limited ("RPS") of the summary of in place hydrocarbonvolumes on the Brockham Field in the Weald Basin, UK for the Field's 80% ownerand operator Angus Energy Ltd ("Angus Energy"). Doriemus has a direct 10%participating interest in the Brockham Field. The gross in-place volumes forthe Brockham Field have been calculated at: * P90 (Low Case) - 1.89 million barrels ("MMstb") * P50 (Best Case) - 3.62 MMstb * P10 (High Case) - 5.83 MMstb Angus Energy commissioned RPS Energy to prepare an updated independentevaluation of the Brockham Field to assist with preparation for the proposednew Brockham side track well scheduled to be spudded in about one month's time.The PW Wells Services 475 rig has been contracted for the side track well whichis scheduled to mobilise to site in late March 2014. Donald Strang, the Company's Chairman, commented: "The Company looks forward shortly to the drilling of the side track well atBrockham, which is targeted to intersect the crestal part of the structure andis planned to be completed as a production well." "We are expecting the CPR from RPS on the much larger Lidsey Field to bepublished over the next few weeks, where the Company holds a 20% directparticipating interest and the JV expects to drill the new Lidsey-2 well duringthe second quarter this year." Competent Person's Statement: The information contained in this announcement has been prepared by RPS EnergyConsultants, and has been reviewed and signed off by Mr Gordon Taylor (CEng,CGeol) who has over 30 years' experience in upstream oil and gas. Mr Taylor is a Chartered Geologist and Chartered Engineer. The technicaldisclosure in this report complies with the 2007 SPE/AAPG/WPC/SPEE PetroleumResource Management System ("PRMS"). Full extract from the RPS Report date 27 February 2014: EVALUATION OF BROCKHAM FIELD, ONSHORE UK In response to Angus Energy Limited's request of February 2014 and the Letterof Engagement dated 5th February 2014 with Angus Energy Limited (the"Agreement"), RPS Energy Consultants Limited ("RPS") is currently undertakingand will shortly complete an independent evaluation of liquid hydrocarbons inLicence PL235 in the United Kingdom (the "Properties") in which Angus EnergyLimited ("Angus") has an interest. The evaluation is based on data and information available up to February 28th2014. The Services have been performed by an RPS team of professional petroleumengineers, geoscientists and economists and is based on the Operator's data,supplied through Angus. All Reserves and Resources definitions and estimatesare based on the 2007 SPE/AAPG/WPC/SPEE Petroleum Resource Management System("PRMS"). Our approach has been to review the Operator's technical interpretation oftheir base case geoscience and engineering data for the field forreasonableness and to review the ranges of uncertainty for each parameteraround this base case in order to estimate a range of petroleum initially inplace and recoverable. QUALIFICATIONS RPS is an independent consultancy specialising in petroleum reservoirevaluation and economic analysis. The provision of professional services hasbeen solely on a fee basis. Mr Gordon Taylor, Director, Geoscience for RPSEnergy, has supervised the evaluation. Mr Taylor is a Chartered Geologist andChartered Engineer with over 30 years' experience in upstream oil and gas. Other RPS employees involved in this work hold at least a Master's degree ingeology, geophysics, petroleum engineering or a related subject or have atleast five years of relevant experience in the practice of geology, geophysicsor petroleum engineering. BASIS OF OPINION The results presented herein reflects our informed judgement based on acceptedstandards of professional investigation, but is subject to generally recogniseduncertainties associated with the interpretation of geological, geophysical andengineering data. The Services have been conducted within our understanding ofpetroleum legislation, taxation and other regulations that currently apply tothese interests. However, RPS is not in a position to attest to the propertytitle, financial interest relationships or encumbrances related to theproperties. Our estimates of resources are based on the data set available to RPS, andprovided by Angus. We have accepted, without independent verification, theaccuracy and completeness of these data. The results represent RPS' best professional judgement and should not beconsidered a guarantee or prediction of results. It should be understood thatany evaluation, particularly one involving exploration and future petroleumdevelopments, may be subject to significant variations over short periods oftime as new information becomes available. As stated in the Agreement, RPScannot and does not guarantee the accuracy or correctness of any interpretationmade by it of any of the data, documentation and information provided by theCompany or others in accordance with the Agreement. The Consultant does notwarrant or guarantee, through the Services, this report or otherwise, anygeological or commercial outcome. Except with permission from RPS, this letter may only be used in accordancewith the Agreement. It must not be reproduced or redistributed, in whole or inpart, to any other person than the addressees or published, in whole or inpart, for any purpose without the express written consent of RPS. SUMMARY OF IN PLACE HYDROCARBON VOLUMES Volumes of hydrocarbons initially in place in the Brockham field that have beenestimated by RPS are summarised in Table 1. Field In-Place Volumes (MMstb) Gross Net Angus Working Interest 1 Low Best High Low Best High (P90) (P50) (P10) (P90) (P50) (P10) Brockham Field 1 1.89 3.62 5.83 1.51 2.90 4.66 1. The Brockham field lies in Licence PL235. Angus Energy working interest inLicence PL235 is 80% Note: To date the well performance on the Brockham field has beendisappointing and suggests a low ultimate recovery (5-10%) from this in placevolume. Approximately 214,790 barrels of oil have been produced from the fieldas at end September 2013. Remaining reserves attributable to the field will beincluded in a CPR to be completed by RPS during March 2014. Table 1: Brockham Field In Place Volumes Glossary MMstb million stock tank barrels of oil oil-in-place the volume of oil estimated to have been initially in place P90 There is estimated to be at least a 90% probability (P90) that the quantities in place equal or exceed this low estimate P50 There is estimated to be at least a 50% probability (P50) that the quantities in place equal or exceed this best estimate P10 There is estimated to be at least a 10% probability (P10) that the quantities in place equal or exceed this high estimate -END- For further information please contact: Doriemus plc +44 (0) 20 7440 0640Donald Strang / Hamish Harris Sanlam Securities UK Limited +44 (0) 20 7628 2200Nominated Adviser and BrokerSimon Clements / Virginia Bull