Credit Suisse Securities (Eur) Ltd 24 October 2006 FORM 38.5(b) DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS WITHOUT RECOGNISED INTERMEDIARY STATUS, OR WITH RI STATUS BUT NOT DEALING IN A CLIENT-SERVING CAPACITY (Rule 38.5(b) 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 23 October 2006 2. INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE (a) Interests and short positions (following dealing) in the class of relevant security dealt in (Note 2) Long Short Number Number (%) (%) (1) Relevant securities -21,694 (0.00%) (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total -21,694 (0.00%) (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 2) Class of relevant security: Long Short Number Number (%) (%) (1) Relevant securities (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total (c) Rights to subscribe (Note 2) Class of relevant security: Details 3. DEALINGS (Note 3) (a) Purchases and sales Purchase/sale Number of securities Price per unit (Note 4) Buy 67 5.815 Buy 156 5.815 Buy 164 5.8 Buy 265 5.825 Buy 344 5.88 (b) Derivatives transactions (other than options) Product name, Long/short (Note 5) Number of securities (Note 6) Price per unit (Note 4) 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 6) price European etc. date paid/received per unit (Note 4) (ii) Exercising Product name, e.g. call option Number of securities Exercise price per unit (Note 4) (d) Other dealings (including new securities) (Note 3) Nature of transaction (Note 7) Details Price per unit (if applicable) (Note 4) 4. 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. Is a Supplemental Form 38.5(b) attached? (Note 8) NO Date of disclosure 24 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 9) Advisor Notes The Notes on Form 38.5(b) 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