Great Portland Estates PLC 26 September 2006 We have received notification that Prudential plc and all of its subsidiary companies no longer have a notifiable interest in the issued share capital of the company. Letter to Great Portland Estates plc dated 14 September 2006 Companies Act 1985 (as amended): Disclosure of Interests in Shares In accordance with Part VI of the Companies Act 1985 (as amended) (the "Act"), we write to inform you that Prudential plc and all of its subsidiary companies, no longer have a notifiable interest in the issued share capital of your company. For the purposes of S210 of the Act, the address for those companies identified herein is Laurence Pountney Hill London EC4R 0HH. From Prudential plc This information is provided by RNS The company news service from the London Stock Exchange