Rule 8.3-BHP Billiton PLC

Royal Bank of Scotland Group PLC 31 January 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 30 January 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 23,847,597 (1.0681%) 1,304,601 (0.0584%) (2) Derivatives (other than options) 22,880 (0.0010%) 184,865 (0.0082%) (3) Options and agreements to purchase/sell 3,073,000 (0.1376%) 3,210,000 (0.1438%) Total 26,943,477 (1.2067%) 4,699,466 (0.2104%) (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 1,002 14.0400 GBP Purchase 1,002 14.1300 GBP Purchase 1,002 14.1500 GBP Purchase 1,002 14.1600 GBP Purchase 1,002 14.1700 GBP Purchase 234,923 14.3565 GBP Purchase 2,368 14.3600 GBP Purchase 1,128 14.3700 GBP Purchase 1,987 14.3800 GBP Purchase 1,324 14.3900 GBP Purchase 3,099 14.4000 GBP Purchase 1,142 14.4100 GBP Purchase 1,765 14.4300 GBP Purchase 2,785 14.4400 GBP Purchase 3,654 14.4500 GBP Purchase 7,366 14.4600 GBP Purchase 1,585 14.4700 GBP Purchase 587 14.4800 GBP Purchase 1,508 14.4900 GBP Purchase 887 14.5200 GBP Purchase 397 14.5300 GBP Purchase 1,811 14.5400 GBP Purchase 2,338 14.5500 GBP Purchase 1,434 14.5600 GBP Purchase 1,424 14.5700 GBP Purchase 933 14.5800 GBP Purchase 938 14.5900 GBP Purchase 933 14.6100 GBP Purchase 2,506 14.6200 GBP Purchase 2,806 14.6300 GBP Purchase 2,084 14.6400 GBP Purchase 549 14.6600 GBP Purchase 1,157 14.6700 GBP Purchase 1,650 14.6900 GBP Purchase 2,602 14.7000 GBP Purchase 551 14.7100 GBP Purchase 2,234 14.7200 GBP Purchase 558 14.7300 GBP Purchase 1,102 14.7500 GBP Purchase 1,119 14.7600 GBP Purchase 557 14.7700 GBP Purchase 587 14.7800 GBP Purchase 500 14.8000 GBP Purchase 730 14.8100 GBP Purchase 5,000 14.7820 GBP Purchase 5,000 14.4700 GBP Purchase 5,000 14.1500 GBP Purchase 4,200 14.4600 GBP Purchase 5,000 14.4350 GBP Purchase 1,726 14.3600 GBP Purchase 5,000 14.5680 GBP Purchase 5,000 14.5200 GBP Purchase 5,000 14.6680 GBP Sale 5,795 14.0300 GBP Sale 5,006 14.1200 GBP Sale 4,525 14.1300 GBP Sale 8,777 14.1400 GBP Sale 12,304 14.1500 GBP Sale 14,610 14.1600 GBP Sale 7,088 14.1700 GBP Sale 9,994 14.1800 GBP Sale 12,079 14.1900 GBP Sale 1,512 14.2000 GBP Sale 2,114 14.2100 GBP Sale 2,070 14.2200 GBP Sale 4,032 14.2400 GBP Sale 5,666 14.2500 GBP Sale 2,796 14.2700 GBP Sale 2,087 14.3100 GBP Sale 2,270 14.3200 GBP Sale 6,973 14.3300 GBP Sale 1,764 14.3400 GBP Sale 7,591 14.3500 GBP Sale 10,275 14.3600 GBP Sale 1,672 14.3700 GBP Sale 5,229 14.3800 GBP Sale 6,241 14.4000 GBP Sale 1,343 14.4100 GBP Sale 2,080 14.4300 GBP Sale 2,075 14.4400 GBP Sale 7,623 14.4600 GBP Sale 200,000 14.4693 GBP Sale 1,751 14.4700 GBP Sale 80,000 14.4800 GBP Sale 3,361 14.5000 GBP Sale 8,066 14.5200 GBP Sale 59,710 14.5202 GBP Sale 4,253 14.5300 GBP Sale 5,778 14.5400 GBP Sale 3,915 14.5500 GBP Sale 7,031 14.5600 GBP Sale 8,678 14.5700 GBP Sale 7,318 14.5800 GBP Sale 517,200 14.5837 GBP Sale 2,172 14.5900 GBP Sale 24,664 14.6000 GBP Sale 345 14.6100 GBP Sale 6,485 14.6300 GBP Sale 50,000 14.7000 GBP Sale 1,500 14.7100 GBP Sale 5,000 14.7100 GBP Sale 5,000 14.6000 GBP Sale 5,000 14.6000 GBP Sale 5,000 14.4600 GBP Sale 10,000 14.1600 GBP Sale 5,000 14.6680 GBP (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 Dec 2008 Call Long 200 0.1500 EUR Warrant (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 31 January 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 Mar 2008 Purchased 250,000 18.000 GBP American 20 Mar Call 2008 Option Mar 2008 Written 250,000 19.000 GBP American 20 Mar Call 2008 Option Jun 2008 Written 25,000 12.000 GBP American 20 Jun Put 2008 Option Jun 2008 Written 160,000 13.000 GBP American 20 Jun Put 2008 Option Mar 2008 Written 178,000 13.000 GBP American 20 Mar Put 2008 Option Mar Written 500,000 15.000 GBP American 20 Mar 2008 2008 Call Apr Written 110,000 9.850 GBP American 11 Apr 2008 2008 Put Mar Written 350,000 15.00 GBP American 20 Mar 2008 2008 Call Apr Purchased 110,000 9.850 GBP American 11 Apr 2008 2008 Put Mar Written 1,000,000 25.000 GBP American 20 Mar 2008 2008 Call Mar Purchased 500,000 15.000 GBP American 20 Mar 2008 2008 Call Mar Purchased 350,000 15.000 GBP American 20 Mar 2008 2008 Call Mar Written 500,000 10.000 GBP American 20 Mar 2008 2008 Put Mar Written 500,000 9.000 GBP American 20 Mar 2008 2008 Put Mar Purchased 1,000,000 15.000 GBP American 20 Mar 2008 2008 Put Mar Purchased 500,000 9.000 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 30 January 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 715,950 (0.0213%) 4,852,470 (0.1444%) (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 715,950 (0.0213%) 4,852,470 (0.1444%) (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 50,000 36.52 AUD Purchase 40,000 36.60 AUD Purchase 64,273 36.70 AUD Sale 64,273 36.70 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 31 January 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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