15 April 2015

                                  Doriemus plc

                         ("Doriemus" or "the Company")

                        Clarification of Press Comment

                      in relation to 9 April Announcement

Doriemus plc (AIM: DOR) announces that UK Oil & Gas Investments Plc ("UKOG")
has made the following news release with respect to its announcement of 9 April
regarding the Horse Hill -1 well in the UK's Weald Basin.

Doriemusinterest in Horse Hill:

The Horse Hill-1 well is located within onshore exploration license PEDL 137,
on the northern side of the Weald Basin near Gatwick Airport.  Doriemus owns a
10% direct interest in Horse Hill Developments Ltd ("HHDL").  HHDL is a special
purpose company that owns a 65% participating interest and operatorship of
licence PEDL 137 and the adjacent licence PEDL 246 in the UK Weald Basin.  The
participants in the Horse Hill-1 well are HHDL with a 65% working interest and
Magellan Petroleum Corporation with a 35% interest.

Enquiries:

Doriemus plc
Donald Strang/Hamish Harris                  +44 (0) 20 7440 0640


Cairn Financial Advisers LLP:
James Caithie / Carolyn Sansom               +44 (0) 20 7148 7900

Public Relations:
Square 1 Consulting Ltd                      +44 (0) 20 7929 5599
David Bick/Mark Longson

UKOG news Release of 15 April 2015 in full is as follows:

Further to its announcement of 9 April 2015 in relation to the upgrade of its
Horse Hill discovery, London quoted UK Oil & Gas Investments PLC (LSE AIM:
UKOG) wishes to repeat and clarify a number of points as a result of recent
reports in the media.

US-based Nutech Ltd ("Nutech") estimates that the Horse Hill-1 ("HH-1") well in
the Weald Basin has a total oil in place ("OIP") of 158 million barrels
("MMBO") per square mile. The upgrade is in relation to the Kimmeridge, Oxford
and Lias sections of Horse Hill and does not relate to the previously reported
Upper Portland Sandstone oil discovery.

The OIP hydrocarbon volumes estimated should not be considered as either
contingent or prospective resources or reserves.

The Horse Hill licences cover 55 square miles of the Weald Basin in southern
England in which the Company has a 20.358% interest. It is estimated that the
relevant Jurassic section of the Weald Basin is approximately 1,100 square
miles. The Company has not undertaken work outside of its licence areas
sufficient to comment on the possible OIP in either the approximate 1,100
square miles or the whole of the Weald Basin.

Further development work in the form of appraisal drilling, well testing and
assessment of recovery factors will be required to seek to quantify net
resources in relation to the Company's licence areas and to prove its
commerciality.

Nutech's report to the Company states this OIP of HH-1 lies within a 653 feet
aggregate net pay section, primarily within three argillaceous limestones and
interbedded mudstones of the Kimmeridge, and the mudstones of the Oxford and
Lias sections. Approximately 72% of OIP, or 114 MMBO, lies within the Upper
Jurassic Kimmeridge interbedded limestone and mudstone sequence.

In order to establish estimates of total OIP within the licence areas, the
semi-regional resource potential of the Weald Basin's eastern footprint is the
subject of ongoing analysis under the contracted alliance between Nutech, UKOG
and Solo Oil Plc. The results of the estimated OIP within the licence will be
reported when completed.

Final assessments of the Upper Portland Sandstone and the Oxford and Lias
sections are in progress, with further results expected shortly.

The executive summary of the Nutech report is available on the Company's
website at www.ukogplc.com.

UKOG's interest in Horse Hill:

The Horse Hill-1 well is located within onshore exploration License PEDL137, on
the northern side of the Weald Basin near Gatwick Airport. UKOG owns a 30%
direct interest in Horse Hill Developments Ltd ("HHDL") and a 1.32% interest in
HHDL via its 6% interest in Angus Energy Limited. HHDL is a special purpose
company that owns a 65% participating interest and operatorship of Licence
PEDL137 and the adjacent Licence PEDL246 in the UK Weald Basin.

Qualified Person's Statement:

Stephen Sanderson, UKOG's CEO, who has over 30 years of relevant experience in
the oil industry, has approved the information contained in this announcement.
Mr Sanderson is a Fellow of the Geological Society of London and is an active
member of the American Association of Petroleum Geologists.

For further information please contact:

UK Oil & Gas Investments PLC
David Lenigas / Donald Strang Tel: 020 7440 0640

WH Ireland (Nominated Adviser and Broker)
James Joyce / Mark Leonard Tel: 020 7220 1666

Square 1 Consulting (Public Relations)
David Bick / Mark Longson Tel: 020 7929 5599


Glossary:

argillaceous         a limestone containing a significant proportion of clay
limestone            minerals

contingent resources those quantities of petroleum estimated, as of a given
                     date, to be potentially recoverable from known
                     accumulations, but the applied project(s) are not yet
                     considered mature enough for commercial development due to
                     one or more contingencies; contingent resources may
                     include, for example, projects for which there are
                     currently no viable markets, or where commercial recovery
                     is dependent on technology under development, or where
                     evaluation of the accumulation is insufficient to clearly
                     assess commerciality; contingent resources are further
                     categorized in accordance with the level of certainty
                     associated with the estimates and may be sub-classified
                     based on project maturity and/or characterised by their
                     economic status

discovery            a discovery is a petroleum accumulation for which one or
                     several exploratory wells have established through
                     testing, sampling and/or logging the existence of a
                     significant quantity of potentially moveable hydrocarbons

limestone            a carbonate sedimentary rock predominantly composed of
                     calcite of organic, chemical or detrital origin. Minor
                     amounts of dolomite, chert and clay are common in
                     limestones. Chalk is a form of fine-grained limestone

MMBO                 millions of barrels of oil

mudstone             an extremely fine-grained sedimentary rock consisting of a
                     mixture of clay and silt-sized particles

net resources        ownership interest share of resources

oil in place (OIP)   the quantity of oil or petroleum that is estimated to
                     exist originally in naturally occurring accumulations
                     before any extraction or production

pay                  a reservoir or portion of a reservoir that contains
                     economically producible hydrocarbons. The term derives
                     from the fact that it is capable of "paying" an income.
                     The overall interval in which pay sections occur is the
                     gross pay; the smaller portions of the gross pay that meet
                     local criteria for pay (such as minimum porosity,
                     permeability and hydrocarbon saturation) are net pay

prospective          those quantities of petroleum estimated, as of a given
resources            date, to be potentially recoverable from undiscovered
                     accumulations by application of future development
                     projects; prospective resources have both an associated
                     chance of discovery and a chance of development;
                     prospective resources are further sub-divided in
                     accordance with the level of certainty associated with
                     recoverable estimates assuming their discovery and
                     development and may be sub-classified based on project
                     maturity

recovery factor      those quantities of petroleum, as a proportion of OIP
                     anticipated to be commercially recoverable by application
                     of development projects to known accumulations from a
                     given date forward under defined conditions

reserves             those quantities of petroleum anticipated to be
                     commercially recoverable by application of development
                     projects to known accumulations from a given date forward
                     under defined conditions; reserves must further satisfy
                     four criteria: they must be discovered, recoverable,
                     commercial and remaining (as of the evaluation date) based
                     on the development project(s) applied; reserves are
                     further categorized in accordance with the level of
                     certainty associated with the estimates and may be
                     sub-classified based on project maturity and/or
                     characterised by development and production status

reservoir            a subsurface rock formation containing an individual
                     natural accumulation of moveable petroleum that is
                     confined by impermeable rock/formations

resources            the total of contingent resources and prospective
                     resources

sandstone            a clastic sedimentary rock whose grains are predominantly
                     sand-sized. The term is commonly used to imply
                     consolidated sand or a rock made of predominantly quartz
                     sand.