Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying issuerof existing shares to which voting rights are Octagonal plcattached:ii 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights X An acquisition or disposal of qualifying financial instruments which may resultin the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic effect toqualifying financial instruments An event changing the breakdown of voting rights Other (please specify): 3. Full name of person(s) subject to the Mrs Viktoriia Maslennikovanotification obligation:iii 4. Full name of shareholder(s) Halb Nominees Limited (if different from 3.):iv 5. Date of the transaction and date onwhich the threshold is crossed or 4 August 2014reached: v 6. Date on which issuer notified: 4 August 2014 7. Threshold(s) that is/are crossed or 5%reached: vi, vii 8. Notified details: A: Voting rights attached to shares viii, ix Class/type Situation previous Resulting situation after the triggeringof to the triggering transactionshares transaction Number Number Number Number of voting % of votingif possible of of of shares rights rights xusing Shares Votingthe ISIN Rights Direct Direct xi Indirect Direct IndirectCODE xii GB00BDD2DY82 35,250,000 35,250,000 38,250,000 38,250,000 5.110% B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ Number of voting % of votingfinancial date xiii Conversion Period xiv rights that may be rightsinstrument acquired if the instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying FinancialInstruments xv, xvi Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of voting % of votingfinancial price date xvii Conversion rights instrument rights xix, xxinstrument period refers to xviii Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 38,250,000 5.110% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi Mrs Viktoriia Maslennikova has a beneficial interest in Octagonal plc, held by Halb Nominees Limited. Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will ceaseto hold: 12. Date on which proxy holder will cease to holdvoting rights: 13. Additional information: 14. Contact name: James Holroyd 15. Contact telephone number: 0121 214 2307