Holding(s) in Company

For filings with the FSA 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 issuer of existing shares to which voting rights are Keller Group plc attached:ii 2. Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights √ An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments An event changing the breakdown of voting rights Other (please specify): 3. Full name of person(s) subject to the Aviva plc & its subsidiaries notification obligation: iii Registered Holder: BNY (Nominees) Limited 45,777* BNY Norwich Union Nominees Limited 324,148* Chase (GA Group) Nominees Limited 2,016,612* 4. Full name of shareholder(s) (if different from 3.): iv Chase Nominees Limited 113,988* CUIM Nominee Limited 35,479* Vidacos Nominees Limited 41,329* *denotes direct interest 5. Date of the transaction and date on which the threshold is 17 May 2011 crossed or reached: v 6. Date on which issuer 18 May 2011 notified: 7. Threshold(s) that is/ are crossed or 3% to 4% Change at Direct Interest Level reached: vi, vii 8. Notified details: A: Voting rights attached to shares viii, ix Class/type Situation previous Resulting situation after the triggering of to the triggering transaction shares transaction Number Number Number Number of voting % of voting if possible of of of shares rights rights x using Shares Voting the ISIN Rights Direct Direct xi Indirect Direct Indirect CODE xii Ordinary Shares 2,337,236 2,337,236 2,577,333 2,577,333 Not 4.01% Not Disclosable Disclosable GB0004866223 B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration Exercise/ Number of voting % of voting financial date xiii Conversion Period xiv rights that may be rights instrument acquired if the instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of voting rights % of voting financial price date xvii Conversion instrument refers to rights xix, instrument period xx xviii Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 2,577,333 4.01% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: xxi The voting rights are managed and controlled by Aviva Investors Global Services Limited, with the following chain of controlled undertakings:- Aviva Investors Global Services Limited: Aviva plc (Parent Company) Aviva Group Holdings Limited (wholly owned subsidiary of Aviva plc) Aviva Investors Holdings Limited (wholly owned subsidiary of Aviva Group Holdings Limited) Aviva Investors Global Services Limited (wholly owned subsidiary of Aviva Investors Holdings Limited) Proxy Voting: 10. Name of the proxy holder: See Section 4 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: Figures are based on a total number of voting rights of 64,310,708, as per the Company's Total Voting Rights Announcement of 1 October 2010. 14. Contact name: Neil Whittaker, Aviva plc 15. Contact telephone number: 01603 684420

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Keller Group (KLR)
UK 100

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