Credit Suisse Securities (Eur) Ltd 17 October 2006 FORM 38.5(a) DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS WITH RECOGNISED INTERMEDIARY STATUS DEALING IN A CLIENT-SERVING CAPACITY (Rule 38.5(a) of the Takeover Code) 1. KEY INFORMATION Name of exempt principal trader Credit Suisse Securities (Europe) Ltd Company dealt in Great Portland Estates Plc Class of relevant security to which the Ordinary Shares dealings being disclosed relate (Note 1) Date of dealing 16 October 2006 2. DEALINGS (Note 2) (a) Purchases and sales Total number of securities purchased Highest price paid (Note 3) Lowest price paid (Note 3) 63817 6.1750 6.1350 Total number of securities sold Highest price received (Note 3) Lowest price received (Note 3) 63817 6.1631 6.1631 (b) Derivatives transactions (other than options) Product name, Long/short (Note 4) Number of securities (Note 5) Price per unit (Note 3) e.g. CFD (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name, Writing, selling, Number of securities Exercise Type, e.g. Expiry Option money purchasing, to which the option American, e.g. call option varying etc. relates (Note 5) price European etc. date paid/received per unit (Note 3) (ii) Exercising Product name, e.g. call option Number of securities Exercise price per unit (Note 3) 3. OTHER INFORMATION Agreements, arrangements or understandings relating to options or derivatives Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated. Date of disclosure 17 October 2006 Contact name Emma Braham Telephone number 0207 883 5798 Name of offeree/offeror with which connected Great Portland Estates Plc Nature of connection (Note 6) Advisor Notes The Notes on Form 38.5(a) can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk This information is provided by RNS The company news service from the London Stock Exchange