Standard Life Investments 16 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) The following amends the Rule 8 Announcement released 15:49 on 11 October 2006 under RNS Number 3275K. Please note that the long number and percentage have been amended. The figure in Section 2 should read 3,041,804 (1.86%) and not 4,332,599 (2.65%) as previously stated. All other details remain unchanged, and the full, amended text appears below. 1. KEY INFORMATION Name of person dealing (Note 1) Standard Life Investments Company dealt in Great Portland Estates PLC Class of relevant security to which the Ord GBP0.125 dealings being disclosed relate (Note 2) Date of dealing 05/10/06 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 3,041,804 1.86 (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total 3,041,804 1.86 (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 Number (%) Number (%) (1) Relevant securities (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total (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) Sale 136,411 GBP 6.171797 Sale 66,981 GBP 6.1825 (b) Derivatives transactions (other than options) Product name, e.g. Long/short (Note 6) Number of securities (Note 7) Price per unit (Note 5) CFD (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name,e.g. Writing, Number of Exercise Type, e.g. Expiry Option moneypaid call option selling, securities to which price American, date /received per purchasing, the option relates European etc. unit (Note 5) varying etc. (Note 7) (ii) Exercising Product name, e.g. call option Number of securities Exercise price per unit (Note 5) (d) Other dealings (including new securities) (Note 4) Nature of transaction (Note 8) Details Price per unit (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. None........................................................................ .............................................................................. Is a Supplemental Form 8 attached? (Note 9) NO Date of disclosure 16/10/06 Contact name Robbie Storrie Telephone number 0131-524-2805 If a connected EFM, name of offeree/offeror with which connected If a connected EFM, state nature of connection (Note 10) Notes The Notes on Form 8.3 can be viewed on the Takeover Panel's website at This information is provided by RNS The company news service from the London Stock Exchange