Holding(s) in Company

Great Portland Estates PLC 20 August 2007 TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES (1). Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: Great Portland Estates PLC 2. Reason for the notification (please state Yes/No): ( ) An acquisition or disposal of voting rights: ( X ) An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: ( ) An event changing the breakdown of voting rights: ( ) Other (please specify) : ( ) 3. Full name of person(s) subject to the notification obligation: Cohen & Steers, Inc 4. Full name of shareholder(s) (if different from 3.): Cohen & Steers, Inc ('CSI') Cohen & Steers Capital Management, Inc ('CSCM') Cohen & Steers Europe S.A. ('CSE') 5. Date of the transaction and date on which the threshold is crossed or reached if different): August 14th, 2007 6. Date on which issuer notified: August 16th, 2007 7. Threshold(s) that is/are crossed or reached: 5% 8. Notified details: A: Voting rights attached to shares Class/type of shares Situation previous to if possible using the the Triggering ISIN CODE transaction Number of shares Number of voting Rights GB00B01FLL16 8,969,182 8,969,182 Resulting situation after the triggering transaction Class/type of shares Number of shares Number of voting rights % of voting rights if possible using the ISIN CODE Direct Direct Indirect Direct Indirect 9,169,182 5% B: Financial Instruments Resulting situation after the triggering transaction Type of Expiration Date Exercise/Conversion Number of voting % of voting financial Period/ Date rights that may be rights instrument acquired if the instrument is exercised/ converted. Nil Total (A+B) Number of voting rights % of voting rights 9,169,182 5% 9. Chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held, if applicable: CSE is the controlled undertaking of CSI and holds 1,198,971 voting rights. This is an indirect holding of less than 3%. CSCM is the controlled undertaking of CSI and holds 7,970,211 voting rights. This is an indirect holding of more than 3%. 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: 13. Additional information: 14. Contact name: Lisa D. Phelan 15. Contact telephone number: 00 1 212-446-9160 Annex Notification Of Major Interests In Shares A: Identity of the person or legal entity subject to the notification obligation Full name (including legal form for legal entities): Cohen & Steers, Inc Contact address (registered office for legal entities): 280 Park Avenue, 10th Floor New York, NY 10017 Phone number: 001 212-832-3232 Other useful information (at least legal representative for legal persons): B: Identity of the notifier, if applicable Full name: Lisa D. Phelan Contact address: 280 Park Avenue, 10th Floor New York, NY 10017 Phone number: 001 212-446-9160 Other useful information (e.g. functional relationship with the person or legal entity subject to the notification obligation): Chief Compliance Officer C: Additional information : This information is provided by RNS The company news service from the London Stock Exchange
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