21 January 2015

                                 Octagonal plc

                        ("Octagonal" or the "Company")

                             Exercise of Warrants

Octagonal Plc (AIM: OCT), announces that it has received notices of the
exercise of warrants to subscribe for a total of 203,021,404 new ordinary
shares in the Company (the "New Ordinary Shares"). The exercise price of the
warrants is 0.1 pence.

Application is being made for the New Ordinary Shares, which will on issue rank
pari passu with the existing Ordinary Shares, to be admitted to trading on AIM
and such admission is expected to occur on or around 28 January 2015.

The Company will therefore have 1,193,098,159 Ordinary Shares in issue with
voting rights and admitted to trading on AIM. This figure may be used by
shareholders in the Company as the denominator for the calculation by which
they will determine if they are required to notify their interest in, or a
change to their interest in, the share capital of the Company under the
Financial Conduct Authority's Disclosure and Transparency Rules.

The Company further advises that the exercise period for the 405,200,001
warrants in issue with an exercise price of 0.3 pence has now been extended
from 28 February 2015 to 28 February 2016.

Enquiries:

Octagonal plc                           +44 (0) 20 7440 0640
Donald Strang/Jason Berry

Cairn Financial Advisers LLP            +44 (0) 20 7148 7900
Nominated Adviser and Broker
James Caithie/Jo Turner/Carolyn Sansom