Exercise of Warrants

21 January 2015 Octagonal plc ("Octagonal" or the "Company") Exercise of Warrants Octagonal Plc (AIM: OCT), announces that it has received notices of theexercise of warrants to subscribe for a total of 203,021,404 new ordinaryshares in the Company (the "New Ordinary Shares"). The exercise price of thewarrants is 0.1 pence. Application is being made for the New Ordinary Shares, which will on issue rankpari passu with the existing Ordinary Shares, to be admitted to trading on AIMand 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 withvoting rights and admitted to trading on AIM. This figure may be used byshareholders in the Company as the denominator for the calculation by whichthey will determine if they are required to notify their interest in, or achange to their interest in, the share capital of the Company under theFinancial Conduct Authority's Disclosure and Transparency Rules. The Company further advises that the exercise period for the 405,200,001warrants in issue with an exercise price of 0.3 pence has now been extendedfrom 28 February 2015 to 28 February 2016. Enquiries: Octagonal plc +44 (0) 20 7440 0640Donald Strang/Jason Berry Cairn Financial Advisers LLP +44 (0) 20 7148 7900Nominated Adviser and BrokerJames Caithie/Jo Turner/Carolyn Sansom