Rensburg Sheppards Inv Mangmt Ltd 25 October 2006 FORM 8.3 DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE (Rule 8.3 of the City Code on Takeovers and Mergers) 1. KEY INFORMATION Name of person dealing (Note 1) Rensburg Sheppards Investment Management Company dealt in Great Portland Estates Class of relevant security Ordinary Shares of 0.125p to which the dealings being disclosed relate (Note 2) Date of dealing 24 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 3) Long Short Number (%) Number (%) (1) Relevant securities 348,707 0.21 (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total 348,707 0.21 (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of relevant security: Long Short CONVERTIBLES Number (%) Number (%) (1) Relevant securities 600,000* 1.03 (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total 600,000* 1.03 *Please note: Since the last disclosure there has been a transfer in of 20,000 shares (c) Rights to subscribe (Note 3) Class of relevant security: Details 3. DEALINGS (Note 4) (a) Purchases and sales Purchase/sale Number of securities Price per unit (Note 5) Purchase 10,800 586.7810185p (b) Derivatives transactions (other than options) Product name, Long/short Number of securities Price per unit e.g. CFD (Note 6) (Note 7) (Note 5) (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product Writing, Number of Exercise Type, e.g. Expiry Option money name, selling, securities price American, date paid/ e.g. purchasing, to which European received call varying etc. the option etc. per unit option relates (Note 5) (Note 7) (ii) Exercising Product name, e.g. Number of securities Exercise price per unit call option (Note 5) (d) Other dealings (including new securities)(Note 4) Nature of transaction Details Price per unit (Note 8) (if applicable) (Note 5) 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 8 attached? (Note 9) NO Date of disclosure 25 October 2006 Contact name Phil Beardwell Telephone number 020 7597 1356 If a connected EFM, name of N/A offeree/offeror with which connected If a connected EFM, state nature of N/A connection (Note 10) Notes The Notes on Form 8.3 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