DOR Doriemus

24 September 2014

                                 Doriemus plc

                         ("Doriemus" or the "Company")

                 Drilling Update, Horse Hill-1, Weald Basin UK

Doriemus Plc (AIM: DOR) is pleased to announce that drilling operations on the
Horse Hill-1 well are continuing successfully and the Marriott 50 rig is now
drilling ahead at a depth of 116 feet measured depth ("MD") today at 12:00
hours. Current rate of drill penetration is about 30 feet an hour.

The Horse Hill-1 well is located on the northern side of UK Weald Basin near
Gatwick Airport and is planned to drill to a Total Depth ("TD") of 8,680 feet
MD to test a number of conventional oil and gas targets.

The surface casing has been cemented at a depth of 84 feet below ground level
and the well is now being drilled in 17 1/2 -inch hole to the next casing point
at about 1,865 feet MD, where a 13 3/8-inch casing will be installed and
cemented before drilling on.

The primary oil reservoir targets in this well lie in the Jurassic Portland
Sandstone and the Corallian Sandstone. There are also a number of secondary oil
targets in the Jurassic aged formations, including the Great Oolite Limestone.
After penetrating the Jurassic, the well will be drilled to TD in order to test
for Triassic aged formations, which are expected to contain gas.

Doriemus owns a 10% direct interest in Horse Hill Developments Limited
("HHDL").

HHDL is a special purpose company that owns a 65% participating interest and
operatorship of onshore licences PEDL137 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 with a 35% interest.

Donald Strang, the Company's Chairman, commented:

"HHDL has successfully installed the heavy drilling rig and the well is
proceeding towards the first conventional oil objectives in the Jurassic. As
the well progresses, we look forward to updating the market with any
significant news."

Glossary:
MD - measured depth
TD - total depth


Enquiries:

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

Cairn Financial Advisers LLP            +44 (0) 20 7148 7900
Nominated Adviser and Broker
James Caithie

Square1 Consulting                      +44 (0) 207 929 5599
David Bick
Mark Longson