Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuer of existing shares to which SEGROvoting rights are attached:ii

plc 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 attachedAn acquisition or disposal of instruments with similar economic effect to

qualifying financial instrumentsAn event changing the breakdown of voting rightsOther (please specify):

3. Full name of person(s) subject to the notification obligation: Third Avenue

Management LLC 4. Full name of shareholder(s) (if different from 3.):iv Third Avenue Management LLC 5. Date of the transaction and date on which the threshold iscrossed or reached: v 1 May 2013 6. Date on which issuer notified: 2 May 2013 7. Threshold(s) that is/are crossed or reached: vi, vii 5.00% 8. Notified details:A: Voting rights attached to shares viii, ix Class/type Situation previous Resulting situation afterof to the triggering the triggeringshares transaction transaction if Number Number % of votingpossible Number of Number of rights xusing of Voting of votingthe ISIN Shares Rights shares rightsCODE Direct Indirect Direct Indirect Direct Indirect xi xii ISIN GB00B5ZN1N88 37,723,249 37,702,510 37,021,026 37,000,287 4.99% B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of financial Expiration Exercise/ Number of voting % of voting instrument date xiii Conversion Period xiv rights that may be rights acquired if the instrument is exercised/ converted. C: Financial Instruments with similar economic effect to Qualifying FinancialInstruments xv, xvi Resulting situation after the triggering transaction

Type of financial Exercise Expiration Exercise/ Number of voting % of voting

instrument price date xvii Conversion rights instrument rights xix, xx period xviii refers to Nominal Delta Total (A+B+C) Number of voting rights Percentage of voting rights 37,000,287 4.99%

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

Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will cease to hold: N/A 12. Date on which proxy holder will cease to hold voting rights: N/A 13. Additional information: 14. Contact name: Robin Healy, Deputy Company Secretary 15. Contact telephone number: +44 (0)20 7451 9082