Holding(s) in Company

For filings with the FSA include the annexFor filings with issuer exclude the annex TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the underlying issuer Keller Group Plcof existing shares to which voting rights are attached: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 instrumentsAn 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 15.02.13reached: v 6. Date on which issuer notified:

18.02.13

7. Threshold(s) that is/are crossed or Below 5%reached: vi, vii8. Notified details: A: Voting rights attached to shares viii, ixClass/type Situation previous Resulting situation after the triggering transactionof to the triggeringshares transactionif 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 OrdinaryGB0004866223 4,025,380 3,354,412 3,280,627 N/A 3,148,747 N/A 4.895% B: Qualifying Financial InstrumentsResulting 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 transactionType of Exercise price Expiration Exercise/ Number of voting rights % of votingfinancial date xvii Conversion instrument refers to rights xix, xxinstrument period xviii Nominal DeltaTotal (A+B+C)Number of voting rights Percentage of voting rights3,148,747 4.895%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi

Schroder Investment Management Limited 2,614,360 4.065%Schroder Investment Management North America Limited 534,387 0.830%Proxy Voting: 10. Name of the proxy holder:11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: The shares referred to in section 9 are held in portfolios13. Additional information: managed by those firms on a discretionary basis for clients under investment management agreements.14. Contact name: Liz Friedman 15. Contact telephone number: 020 7658 6000