Credit Suisse Securities (Eur) Ltd 05 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 04 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 -118,601 (0.00%) (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total -118,601 (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 299 5.95 Buy 1504 5.95 Buy 392 5.98 Buy 505 5.995 Buy 964 5.995 Buy 909 5.995 Buy 578 5.995 Buy 301 6 Buy 499 5.995 Buy 513 5.99 Buy 60 5.995 Buy 8147 5.995 Buy 1700 5.995 Buy 795 6.03 Buy 1407 6.06 Buy 1077 6.055 Buy 2585 6.05 Buy 701 5.955 Buy 967 5.995 Buy 1007 6.06 Buy 1508 6.045 Sell 1653 6.05 Sell 1934 6.05 Sell 1191 6.05 Sell 1895 6.05 Sell 898 6.05 Sell 1757 6.05 Sell 1319 6.025 Sell 2225 6.025 Sell 1283 6.025 Sell 1037 6.025 Sell 1294 6.02 Sell 1117 6.005 Sell 1111 6.005 Sell 2441 6.005 Sell 35 6.005 Sell 1002 6.005 (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, date paid/received per e.g. call option varying etc. relates (Note 6) price European etc. 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 5 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