Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi 1. Identity of the issuer or the Wincanton plcunderlying issuerof existing shares to which voting rights are attached: 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 Noresult in the acquisition of shares already issued to which voting rights are attached An acquisition or disposal of instruments with similar economic effect Noto qualifying financial instruments An event changing the breakdown of voting rights No Other (please Nospecify): 3. Full name of person(s) subject to Ameriprise Financial, Inc. and its groupthenotification obligation: 4. Full name of shareholder(s) See additional information under 13(if different from 3.): 5. Date of the transaction and date 30 April 2013on which the threshold is crossed or reached: 6. Date on which issuer notified: 01 May 2013 7. Threshold(s) that is/are crossed Above the threshold of 12% or reached: 8. Notified details: A: Voting rights attached to shares Class/type Situation Resulting situation after the triggeringof previous transactionshares to the triggering transaction if possible Number Number Number Number of voting % of voting rightsusing of of of shares rightsthe ISIN Shares VotingCODE Rights Direct Direct Indirect Direct Indirect Ordinary 13,393,159 13,393,159 118,000 118,000 14,574,957 0.097% 11.971%Shares of 10pence each GB0030329360 B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of financial Expiration Exercise/ Number of voting % of votinginstrument Conversion Period rights that may be rights date 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 Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of voting % of votingfinancial price date Conversion rights instrument rightsinstrument period refers to 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 14,692,957 12.068%

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

Ameriprise Financial, Inc., which through intermediate holding companiescontrols the voting rights of Columbia Management Investment Advisers,Columbia Wanger Asset Management, Threadneedle Management Luxembourg S.A. andThreadneedle Asset Management Holdings Ltd, which itself controls the votingrights of Threadneedle Asset Management Ltd, Threadneedle International Ltdand Threadneedle Pensions Ltd. Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will N/A ceaseto hold: 12. Date on which proxy holder will cease to N/A holdvoting rights: 13. Additional information: Registered Owner State Street Nominees Limited A/c XC7N

1,453,319

HSBC Global Custody Nominee (UK) Limited A/c 683182

544,681

Littledown Nominees Ltd A/c ZLA05

369,073

Littledown Nominees Ltd A/c ZLA07

3,460,000

Littledown Nominees Ltd A/c 07197

118,000

Littledown Nominees Ltd A/c 10479

3,228

Littledown Nominees Ltd A/C 34789

189,000

Littledown Nominees Ltd A/c 18667

476,768

Littledown Nominees Ltd A/c 10496

6,920,923

Littledown Nominees Ltd A/c 10492 1,157,965 14. Contact name: Steve Williams, Company Secretary 15. Contact telephone 01249 710 000number: 16. Authorised by: Steve Williams, Company Secretary 2 May 2013