Rule 8.3-BHP Billiton PLC

Royal Bank of Scotland Group PLC 08 February 2008 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) Royal Bank of Scotland Group Plc Company dealt in BHP Billiton Plc Class of relevant security to which the dealings being ORD USD 0.50 disclosed relate (Note 2) Date of dealing 7 February 2008 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 21,521,848 (0.9751%) 340,257 (0.0154%) (2) Derivatives (other than options) 22,700 (0.0010%) 138,571 (0.0062%) (3) Options and agreements to purchase/sell 3,073,000 (0.1392%) 4,380,000 (0.1984%) Total 24,617,548 (1.1153%) 4,858,828 (0.2200%) (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) Purchase 5,000 14.6300 GBP Purchase 3,000 14.6500 GBP Purchase 6,803 14.6600 GBP Purchase 10,636 14.6700 GBP Purchase 2,675 14.6800 GBP Purchase 34,858 14.6900 GBP Purchase 2,158 14.7100 GBP Purchase 43,843 14.7128 GBP Purchase 30,000 14.7300 GBP Purchase 557 14.7400 GBP Purchase 578 14.7500 GBP Purchase 1,117 14.7600 GBP Purchase 585 14.7700 GBP Purchase 558 14.7800 GBP Purchase 1,116 14.7900 GBP Purchase 579 14.8000 GBP Purchase 600 14.8200 GBP Purchase 1,135 14.8500 GBP Purchase 1,716 14.8700 GBP Purchase 1,261 14.8900 GBP Purchase 1,270 14.9100 GBP Purchase 12,001 14.9200 GBP Purchase 500 14.9300 GBP Purchase 550 14.9400 GBP Purchase 10,000 14.9500 GBP Purchase 715 14.9600 GBP Purchase 1,218 14.9700 GBP Purchase 2,000 14.9800 GBP Purchase 15,772 14.9900 GBP Purchase 5,100 14.6900 GBP Purchase 5,000 14.8900 GBP Purchase 2,100 14.6900 GBP Purchase 30,000 14.7700 GBP Purchase 5,000 14.6300 GBP Sale 34,858 14.6900 GBP Sale 36,600 14.7754 GBP Sale 2,500 14.8200 GBP Sale 85,000 14.8246 GBP Sale 6,000 14.9800 GBP Sale 200,000 15.0000 GBP Sale 480,000 15.0000 GBP (b) Derivatives transactions (other than options) Product Long/short Number of securities Price per unit name, (Note 6) (Note 7) (Note 5) e.g. CFD Jun 2008 Call Warrant Long 800 0.2800 EUR Dec 2008 Call Warrant Long 150 0.3600 EUR (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product Writing, Number of Exercise Type, e.g. Expiry Option name, selling, securities to price American, date money purchasing, which the option European paid/ varying etc. relates (Note 7) etc. received e.g. per unit call (Note 5) option Apr 2008 Purchasing 30,000 14.0000 American 18/04/ 0.9500 GBP Put 2008 Option Feb 2008 Purchasing 50,000 14.0000 American 15/02/ 0.2000 GBP Put 2008 Option Feb 2008 Selling 30,000 16.0000 American 15/02/ 0.1400 GBP Call 2008 Option Mar 2008 Purchasing 5,000 11.0000 American 20/03/ 0.1400 GBP Put 2008 Option (ii) Exercising Product name, e.g. call Number of Exercise price per unit (Note option securities 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. Is a Supplemental Form 8 attached? (Note 9) YES/NO Date of disclosure 8 February 2008 Contact name Richard Hopkins Telephone number (020) 7714 4459 If a connected EFM, name of offeree/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 www.thetakeoverpanel.org.uk SUPPLEMENTAL FORM 8 DETAILS OF OPEN POSITIONS (This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate) OPEN POSITIONS (Note 1) Product Written Number of securities to Exercise Type, e.g. Expiry name, or which the option or price (Note American, date purchased derivative relates 2) European etc. e.g. call option Feb 2008 Purchase 250,000 15.0000 GBP American 15 Feb Put 2008 Option Mar 2008 Purchase 250,000 18.0000 GBP American 20 Mar Call 2008 Option Mar 2008 Written 250,000 19.0000 GBP American 20 Mar Call 2008 Option Mar 2008 Purchase 750,000 12.0000 GBP American 20 Mar Put 2008 Option April 2008 Purchase 30,000 14.0000 GBP American 18 Apr Put 2008 Option Feb 2008 Purchase 50,000 14.0000 GBP American 15 Feb Put 2008 Option Feb 2008 Written 30,000 16.0000 GBP American 15 Feb Call 2008 Option Jun 2008 Written 25,000 12.0000 GBP American 20 Jun Put 2008 Option Jun 2008 Written 160,000 13.0000 GBP American 20 Jun Put 2008 Option Mar 2008 Purchase 5,000 11.0000 GBP American 20 Mar Put 2008 Option Mar 2008 Written 178,000 13.0000 GBP American 20 Mar Put 2008 Option Mar 2008 Written 55,000 18.0000 GBP American 20 Mar Call 2008 Option Mar Written 500,000 15.00 GBP American 20 Mar 2008 2008 Call Apr Written 110,000 9.85 GBP American 11 Apr 2008 2008 Put Mar Written 350,000 15.00 GBP American 20 Mar 2008 2008 Call Apr Purchased 110,000 9.85 GBP American 11 Apr 2008 2008 Put Mar Written 1,000,000 25.00 GBP American 20 Mar 2008 2008 Call Mar Purchased 500,000 15.00 GBP American 20 Mar 2008 2008 Call Mar Purchased 350,000 15.00 GBP American 20 Mar 2008 2008 Call Mar Written 500,000 10.00 GBP American 20 Mar 2008 2008 Put Mar Written 500,000 9.00 GBP American 20 Mar 2008 2008 Put Mar Purchased 1,000,000 15.00 GBP American 20 Mar 2008 2008 Put Mar Purchased 500,000 9.00 GBP American 20 Mar 2008 2008 Put Notes 1. Where there are open option positions or open derivative positions (except for CFDs), full details should be given. Full details of any existing agreements to purchase or to sell should also be given on this form. 2. For all prices and other monetary amounts, the currency must be stated. For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover Panel's website at www.thetakeoverpanel.org.uk 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) Royal Bank of Scotland Group Plc Company dealt in BHP Billiton Ltd Class of relevant security to which the dealings being Ordinary disclosed relate (Note 2) Date of dealing 7 February 2008 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 2,302,601 (0.0685%) 4,098,455 (0.1220%) (2) Derivatives (other than options) 0 (0.0%) 0 (0.0%) (3) Options and agreements to purchase/sell 0 (0.0%) 0 (0.0%) Total 2,302,601 (0.0685%) 4,098,455 (0.1220%) (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) Purchase 200,000 36.52 AUD Purchase 200,000 36.68 AUD Purchase 200,000 36.73 AUD Sale 2,127 36.22 AUD (b) Derivatives transactions (other than options) Product Long/short (Note Number of securities (Note Price per unit (Note name, 6) 7) 5) e.g. CFD (c) Options transactions in respect of existing Purchase securities (i) Writing, selling, purchasing or varying Product Writing, Number of Exercise Type, e.g. Expiry Option name, selling, securities to American, money purchasing, which the option European varying etc. relates (Note 7) etc. e.g. price date paid/ call received option per unit (Note 5) (ii) Exercising Product name, e.g. call Number of Exercise price per unit (Note option securities 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. Is a Supplemental Form 8 attached? (Note 9) YES/NO Date of disclosure 8 February 2008 Contact name Richard Hopkins Telephone number (020) 7714 4459 If a connected EFM, name of offeree/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 www.thetakeoverpanel.org.uk This information is provided by RNS The company news service from the London Stock Exchange

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