Holding(s) in Company

For filings with the FCA include the annex For filings with issuer exclude the annex TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying issuerof existing shares to which voting rights are Keller Group 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 Schroders plcnotification 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 13.03.15reached: v 6. Date on which issuer notified: 31.03.15 7. Threshold(s) that is/are crossed or Above 5%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 if possible Number Number Number Number of voting % of voting rightsusing of of of shares rights xthe ISIN Shares VotingCODE Rights Direct Direct xi Indirect xii Direct Indirect Ordinary GB0004866223 3,280,627 3,148,747 5,278,548 N/A 3,603,178 N/A 5.037% 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 Financial Instruments xv, xviResulting situation after the triggering transaction Type of Exercise price Expiration Exercise/ Number of voting rights % of votingfinancial date xvii Conversion instrument refers to rights xix, xxinstrument period xviii Nominal Delta CFD N/A N/A N/A 28,919 0.040% 1 Total (A+B+C) Number of voting rights Percentage of voting rights 3,632,097 5.078% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi Schroder & Co. Limited 17,000 0.024% Schroder Investment Management Limited 3,106,656 4.343% Schroder Investment Management North America Limited 508,441 0.711% 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: The shares referred to in section 9 are held in portfolios managed by those firms on a discretionary basis for clients under investment management agreements. This disclosure has been calculated based on issue share capital amount 71,528,701. 14. Contact name: Kerry Porritt Group Company Secretary 15. Contact telephone number: +44 207 616 7575