Rule 8.3-BHP Billiton PLC

Royal Bank of Scotland Group PLC 10 December 2007 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 December 2007 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 23,455,174 (1.0506%) 702,788 (0.0314%) (2) Derivatives (other than 0 (0.0%) 0 (0.0%) options) (3) Options and agreements to 2,263,100 (0.1013%) 4,431,877 (0.1985%) purchase/sell Total 25,718,274 (1.1519%) 5,134,665 (0.2299%) (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 1,634 16.4318 GBP Purchase 3,000 16.4400 GBP Purchase 96 16.4600 GBP Purchase 96 16.4700 GBP Purchase 771 16.4800 GBP Purchase 770 16.4900 GBP Purchase 5,463 16.4975 GBP Purchase 386 16.5000 GBP Purchase 800 16.5600 GBP Purchase 364 16.6200 GBP Purchase 193 16.6500 GBP Purchase 13,243 16.7600 GBP Purchase 101,096 16.7600 GBP Purchase 2,000 16.4500 GBP Purchase 2,000 16.5700 GBP Purchase 340,000 16.6000 GBP TOTAL: 471,912 16.4100 GBP Sale 369 16.4300 GBP Sale 1,486 16.4500 GBP Sale 148 16.4800 GBP Sale 579 16.5200 GBP Sale 96 16.5500 GBP Sale 800 16.5900 GBP Sale 96 16.6000 GBP Sale 2,386 16.6100 GBP Sale 742 16.6200 GBP Sale 7 16.6500 GBP Sale 289 16.6800 GBP Sale 1,200 16.7300 GBP Sale 578 16.7600 GBP Sale 13,340 16.8300 GBP Sale 96 16.8400 GBP Sale 289 16.7600 GBP Sale 3,700 16.6520 GBP Sale 80,000 16.6910 GBP Sale 225,000 16.5420 GBP Sale 50,000 TOTAL: 381,201 (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 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) Jun Purchased 5,000 14.0000 American 12 0.5400 EUR 2008 GBP June Call 2008 Warrant Dec Purchased 5,000 19.0000 American 11 Dec 0.3100 EUR 2008 GBP 2008 Call Warrant Jun Purchased 2,000 20.0000 American 18 0.5400 EUR 2009 GBP June Call 2009 Warrant Dec Written 500,000 16.0000 American 21 Dec 0.9600 GBP 2007 GBP 2007 Call 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 10 December 2007 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 American, date purchased derivative relates (Note 2) European etc. e.g. call option Dec 2007 Written 70,000 10.0000 American 20 Dec Call GBP 2007 Warrant Dec 2007 Written 50,150 11.0000 American 20 Dec Put GBP 2007 Warrant Dec 2007 Written 13,245 14.0000 American 20 Dec Call GBP 2007 Warrant Dec 2007 Written 80,000 14.0000 American 20 Dec Put GBP 2007 Warrant Dec 2007 Written 42,500 16.0000 American 20 Dec Call GBP 2007 Warrant Dec 2007 Written 32,500 17.0000 American 20 Dec Call GBP 2007 Warrant Dec 2007 Written 330 18.0000 American 20 Dec Call GBP 2007 Warrant Mar 2008 Written 7,400 17.0000 American 13 Call GBP March Warrant 2008 Mar 2008 Written 16,000 19.0000 American 13 Call GBP March Warrant 2008 Jun 2008 Written 23,000 10.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 10,000 12.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 73,473 14.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 3,000 15.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 20,300 16.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 30,000 18.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 36,500 20.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 5,400 22.0000 American 12 Call GBP June Warrant 2008 Jun 2008 Written 115,000 24.0000 American 12 Call GBP June Warrant 2008 Dec 2008 Written 18,900 11.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 23,000 13.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 3,450 14.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 231,500 15.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 55,225 16.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 23,800 17.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 9,950 17.0000 American 11 Dec Put GBP 2008 Warrant Dec 2008 Written 295,300 19.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 8,975 21.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 6,700 23.0000 American 11 Dec Call GBP 2008 Warrant Dec 2008 Written 453,579 25.0000 American 11 Dec Call GBP 2008 Warrant Jun 2009 Written 9,000 16.0000 American 18 Call GBP June Warrant 2009 Jun 2009 Written 2,000 18.0000 American 18 Call GBP June Warrant 2009 Jun 2009 Written 116,800 20.0000 American 18 Call GBP June Warrant 2009 Jun 2009 Written 25,000 24.0000 American 18 Call GBP June Warrant 2009 Dec 2007 Written 500,000 10.0000 American 21 Dec Put GBP 2007 Option Mar 2008 Purchase 250,000 18.0000 American 20 Mar Call GBP 2008 Option Mar 2008 Written 250,000 19.0000 American 20 Mar Call GBP 2008 Option Dec 2007 Written 70,000 10.0000 American 21 Dec Put GBP 2007 Option Dec 2007 Written 30,000 10.5000 American 21 Dec Put GBP 2007 Option Jun 2008 Written 25,000 12.0000 American 20 Jun Put GBP 2008 Option Jun 2008 Written 160,000 13.0000 American 20 Jun Put GBP 2008 Option Mar 2008 Written 178,000 13.0000 American 20 Mar Put GBP 2008 Option Jan 2008 Written 500,000 16.00 GBP American 18 Jan Call 2008 Dec 2007 Written 250,000 15.00 GBP American 21 Dec Call 2007 Dec 2007 Written 500,000 13.00 GBP American 21 Dec Call 2007 Dec 2007 Written 300,000 14.00 GBP American 21 Dec Call 2007 Dec 2007 Purchased 300,000 14.00 GBP American 21 Dec Call 2007 Dec 2007 Purchased 500,000 16.00 GBP American 21 Dec Call 2007 Mar 2008 Written 500,000 10.00 GBP American 20 Mar Put 2008 Dec 2007 Written 250,000 15.00 GBP American 21 Dec Put 2007 Apr 2008 Written 110,000 10.00 GBP American 11 Apr Put 2008 Apr 2008 Purchased 110,000 10.00 GBP American 11 Apr Put 2008 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 December 2007 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 1,573,537 (0.0468%) 4,767,056 (0.1419%) (2) Derivatives (other than 0 (0.0%) 0 (0.0%) options) (3) Options and agreements to 0 (0.0%) 0 (0.0%) purchase/sell Total 1,573,537 (0.0468%) 4,767,056 (0.1419%) (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) (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 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 10 December 2007 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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