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 Elementis 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 APG Asset Management N.V.notification obligation:iii 4. Full name of shareholder(s) (if different from 3.):iv 5. Date of the transaction and date onwhich the threshold is crossed or 05 March 2015reached: v 6. Date on which issuer notified: 06 March 2015 7. Threshold(s) that is/are crossed or 3%reached: vi, vii 8. Notified details: A: Voting rights attached to shares viii, ix Class/type Situation previous Resulting situation after the triggering transactionof to the triggeringshares transaction Number Number Number Number of voting % of voting rights xif possible of of of shares rightsusing Shares Votingthe ISIN Rights Direct Direct xi Indirect Direct IndirectCODE xii 13,840,743 13,840,743 13,938,814 13,983,814 3.02%GB0002418548 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. N/A N/A N/A N/A N/A C: Financial Instruments with similar economic effect to Qualifying FinancialInstruments xv, xvi Resulting situation after the triggering transaction Type of Exercise price Expiration Exercise/ Number of voting rights % of voting rightsfinancial date xvii Conversion instrument refers to xix, xxinstrument period xviii N/A N/A N/A N/A N/A Nominal Delta N/A N/A Total (A+B+C) Number of voting rights Percentage of voting rights 13,938,814 3.02% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi N/A Proxy Voting: 10. Name of the proxy holder: APG Asset Management N.V. 11. Number of voting rights proxy holder willcease N/Ato hold: 12. Date on which proxy holder will cease to hold N/Avoting rights: 13. Additional information: We wish to inform you that APG Algemene Pensioen Groep N.V. ("APG") has decided to split-off the asset management activities. The entity that performs the asset management activities is called APG Asset Management N.V. ("APG AM"). The separation has been effected by means of a split-off in accordance with the provisions of Dutch law which implied that all asset management activities shall transfer by operation of law to APG AM. Contact person(s) and contact details remain unchanged. This notification is made on behalf of APG AM. 14. Contact name: Mr. Martijn Snoek 15. Contact telephone number: +31 20 604 8168 This notification is made in accordance with Rule 5.8.12 R(1) of the Disclosureand Transparency Rules sourcebook. Wai WongCompany Secretary020 7408 9300

09 March 2015