Holding(s) in Company

7 Dec 2010 14:33

For filings with the FSA include the annex

For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: Keller Group plc 2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights Yes

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 notification

obligation: Baillie Gifford & Co

4. Full name of shareholder(s) (if different from 3.): 5. Date of the transaction and date on which the threshold is crossed or reached: 6 Dec 2010 6. Date on which issuer notified: 7 Dec 2010 7. Threshold(s) that is/are crossed or reached:

5% 8. Notified details:

A: Voting rights attached to shares

Class/type Situation Resulting situation after the triggering of previous transaction

shares to the triggering

transaction if possible Number Number Number Number of voting % of voting using of of of shares rights rights the ISIN Shares Voting CODE Rights Direct Direct Indirect Direct Indirect Ordinary Share

GB0004866223 Below 5% Below 5% 3,251,556 3,251,556 5.06

B: Qualifying Financial Instruments Resulting situation after the triggering transaction

Type of financial Expiration Exercise/ Number of voting % of voting instrument date Conversion rights that may be rights Period acquired if the instrument is exercised/ converted. N/A

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of % of voting financial price date Conversion voting rights instrument period rights instrument refers to Nominal Delta N/A Total (A+B+C) Number of voting rights Percentage of voting rights 3,251,556 5.06%

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

In the narrative below, the figures in [ ] indicate the amount of voting rights and the percentage held by each controlled undertaking where relevant.

Baillie Gifford & Co, a discretionary investment manager, is the parent undertaking of an investment management group.

Its wholly-owned subsidiary undertaking Baillie Gifford Overseas Limited [14,653; 0.02%] is also a discretionary investment manager.

Its wholly-owned subsidiary undertaking Baillie Gifford & Co Limited [282,174; 0.44%] is an OEIC Authorised Corporate Director and Unit Trust Manager which has delegated its discretionary investment management role to Baillie Gifford & Co.

Its wholly-owned subsidiary undertaking Baillie Gifford Life Limited [831,871;1.29%] is a life assurance company which procures discretionary investment management services from Baillie Gifford & Co in respect of its own account shareholdings. Proxy Voting: 10. Name of the proxy holder: N/A

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: 14. Contact name: Gillian Wright 15. Contact telephone number: 0131 275 3041