For Immediate Release

    26 January 2017

    DORIEMUS PLC

    ("Doriemus" or the "Company")

    UK onshore Brockham Oil Field Update

    Work completed and hydrocarbons encountered in all targeted zones.
     

    London-quoted Doriemus PLC (NEX: DOR) announces that the operator of the
    Brockham Oil Field, Angus Energy Plc, has provided an update today with respect
    to the Brockham Oil Field stating that work to complete, log, case and cement
    the well at the Brockham Oil Field has now been successfully completed and
    potential reservoirs have been logged in the Portland, Kimmeridge and Corallian
    layers with all three formations having hydrocarbon shows. The full Angus
    Energy Plc Brockham update news release is included below.

    David Lenigas, Doriemus's Chairman, commented;

    "Very positive news indeed that hydrocarbons have been encountered in the
    Portland and the Kimmeridge formations at the Brockham well as per the nearby
    Horse Hill -1 well. Even more encouraging is that oil and gas shows are evident
    in the deeper Corallian formation, something that was not tested in the Horse
    Hill well testing programme at the beginning of 2016. Doriemus is a shareholder
    in both Brockham and Horse Hill oil plays in the Weald Basin just north of
    London's Gatwick International Airport and these Brockham well results to date
    bodes well for the oil propspectivity of the wider Weald Basin."

    Interest in Brockham Oil Field (PL 235):

    Doriemus owns a 10% direct interest in the Brockham Oil Field which is held
    under UK Production Licence PL 235.

    Angus Energy Plc's News Release dated 26 January 2017, is as follows:

    "Brockham oil field - Work completed and hydrocarbons encountered in all
    targeted zones

    Angus Energy plc (the "Group") is pleased to confirm that, further to the 18
    January 2017 announcement, work to complete, log, case and cement the well at
    the Brockham oilfield has now been successfully completed and potential
    reservoirs have been logged in the Portland, Kimmeridge and Corallian layers
    with all three formations having hydrocarbon shows.

    The 6" hole has been electronically logged using quad combo and Ultra Wave
    fracture analysis, it has been cased and cemented, whilst the old open hole
    side-track has now been abandoned and cemented up back to inside the main well
    casing.

    The well will now, upon OGA confirmation, be renamed BR-X4Z.

    Further log analysis and  laboratory work is currently being undertaken to
    provide a better understanding of the Kimmeridge and other formations, but from
    the evidence so far, these appear to be the same in structure to the oil
    bearing Kimmeridge sections in the nearby Horse Hill-1 well. Notably, the
    Corallian formation, which lies immediately below the Kimmeridge, had both oil
    and gas shows.

    Jonathan Tidswell-Pretorius, the Company's Chairman, commented:

    "We are pleased to have encountered hydrocarbon shows missed in the previous
    drilling by BP in 1987 in the three Kimmeridge target intervals and are
    delighted to see encouragement for the predicted analogy to the Horse Hill
    geology. Encouragingly, we have also seen oil and gas shows in the underlying
    Corallian. Further analysis is underway to identify the extent of hydrocarbon
    presence and the ability of these hydrocarbons to freely move into the
    wellbore. New Ultra Wave well logging technology has been used in the logging
    of this well and will, once analysed, allow us to make an image of the borehole
    wall in order to map the presence of, and density of, natural fractures in the
    target reservoirs. This will enable us to target the most prospective zones
    which have the highest potential for future production."

    We will update the market as soon as possible with the results of the further
    analysis and as we progress further down the path towards production.

    Qualified Person's Statement:

    Chris de Goey, a Non-Executive Director of the Company, who has over 20 years
    of relevant experience in the oil and gas industry, has approved the
    information contained in this announcement. Mr de Goey is a member of the
    Petroleum Exploration Society of Great Britain and the Society of Petroleum
    Engineers.

    END."

    The directors of the Company accept responsibility for the contents of this
    announcement.

    For further information please contact:

    Doriemus Plc:

    www.doriemus.com

    David Lenigas (Executive Chairman)
                                                                  +44 (0) 20
    74400640

    Hamish Harris (Non-Executive Director)

    Peterhouse Corporate Finance
    Limited                                                        +44 (0) 20 7469
    0930

    Guy Miller

    Fungai Ndore

    Square 1 Consulting (Public Relations)
                                                               +44 (0) 20 7929 5599

    David Bick