Great Portland Estates PLC 29 May 2007 Great Portland Estates plc (the "Company") Additional notification relating to the announcement made on 24 May 2007. In section 15 of the announcement made by the Company on 24 May 2007 concerning the total holding following the notification, the non-beneficial holding should have included a holding of 48,000 shares that, are held by Basil Samuel Trust. The Basil Samuel Trust was not directly involved in that notification. The correct holdings in the Company for Richard Peskin are as follows: Beneficial 25,000 Non beneficial 73,000 Total 108,000 Enquiries: Desna Martin Company Secretary 020 7647 3093 Desna Martin Company Secretary This information is provided by RNS The company news service from the London Stock Exchange