Rule 8.3 - BHP BILLITON PLC

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 BARCLAYS PLC (Note 1) Company dealt in BHP BILLITON PLC Class of relevant security USD0.50 to which the dealings being disclosed relate (Note 2) Date of dealing 17 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 109,855,075 4.98% 8,845,357 0.40% securities (2) Derivatives 5,666,391 0.26% 1,282,958 0.06% (other than options) (3) Options and 1,290,000 0.06% 1,758,425 0.08% agreements to purchase/sell Total 116,811,466 5.29% 11,886,740 0.54% (b) Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of Long Short relevant security: 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 (GBP) Purchase 153,714 15.0050 Purchase 96 Transfer Purchase 11,577 15.0563 Purchase 187,607 15.4500 Purchase 49,776 14.7800 Purchase 38,428 15.0050 Purchase 200 14.8988 Purchase 33,537 15.0211 Purchase 1,002 14.8807 Purchase 49,776 14.7800 Purchase 21,118 14.8390 Purchase 11,577 15.0535 Purchase 1,200 14.9925 Purchase 126 15.4377 Purchase 10,135 15.0262 Purchase 147,844 15.0409 Purchase 22,248 14.9154 Purchase 94,744 14.6691 Purchase 200 14.9975 Purchase 171 15.0500 Purchase 15,203 14.9536 Purchase 12,562 14.9955 Purchase 1,200 14.9925 Purchase 12,564 14.8605 Purchase 19,137 15.0412 Purchase 18,026 14.8254 Purchase 229,330 15.0070 Purchase 17,852 15.0222 Purchase 171 15.0500 Purchase 500 14.8875 Purchase 22,365 14.9895 Purchase 240,907 15.0092 Purchase 107,000 14.7800 Purchase 192,142 15.0050 Purchase 13,420 14.9057 Purchase 2,482 14.7828 Purchase 228,480 14.9755 Purchase 76,015 15.0169 Purchase 12,300 14.9773 Sale 1,098 15.0417 Sale 15,203 14.9523 Sale 261 14.8817 Sale 228,480 14.9755 Sale 19,137 15.0383 Sale 18,026 14.8227 Sale 12,300 14.9758 Sale 11,577 15.0535 Sale 11,577 15.0535 Sale 107,000 14.7800 Sale 171 15.0500 Sale 1,002 14.8780 Sale 1,200 14.9925 Sale 76,015 15.0154 Sale 13,420 14.9034 Sale 17,852 15.0194 Sale 162 15.4623 Sale 675 15.0235 Sale 13,503 14.7800 Sale 123,900 14.7800 Sale 52,840 15.0356 Sale 107,000 14.7800 Sale 12,562 14.9942 Sale 10,135 15.0247 Sale 229,330 15.0070 Sale 228,480 14.9755 Sale 12,564 14.8590 Sale 48 Transfer Sale 22,248 14.9154 Sale 94,744 14.6691 Sale 21,118 14.8390 Sale 7,767 15.0438 Sale 2,482 14.7800 Sale 171 15.0481 Sale 33,537 15.0211 Sale 147,844 15.0409 Sale 22,365 14.9880 Sale 96 Transfer Sale 171 15.0500 NB: The below transactions which were previously disclosed have been cancelled Deal Date Purchase/Sale Number of Securities Price per unit (GBP) 14/12/2007 Purchase 260 15.4975 (b) Derivatives transactions (other than options) Product Name Long/Short Number Of Securities Price Per Unit CFD Short 2482 14.7828 CFD Short 12564 14.8604 CFD Short 1002 14.8806 CFD Short 10499 14.9124 CFD Short 22248 14.9154 CFD Short 1200 14.9925 CFD Short 17852 15.0222 CFD Short 10135 15.0262 CFD Short 11262 15.035 CFD Short 1357 15.0356 CFD Short 147844 15.0409 CFD Short 4704 15.0455 CFD Short 11577 15.0563 CFD Long 18026 14.8227 CFD Long 21118 14.8389 CFD Long 5225 14.8978 CFD Long 13420 14.9034 CFD Long 12300 14.9758 CFD Long 22365 14.9879 CFD Long 76015 15.0154 CFD Long 33537 15.021 CFD Long 19137 15.0383 CFD Long 171 15.0481 CFD Long 7337 15.0628 (c) Options transactions in respect of existing securities (i) Writing, selling, purchasing or varying Product name, Writing, Number of Exercise Type, e.g. Expiry Option money e.g. call selling, securities to price American, date paid/received option purchasing, which the option European etc. per unit (GBP) varying etc. relates (GBP) (ii) Exercising Product name, e.g. Number of Exercise price per call option securities unit (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 None 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 Date of disclosure 18 December 2007 Contact name Geoff Smith Telephone number 020 7116 2913 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 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 name, Written or Number of securities Exercise price Type, e.g. Expiry date e.g. call option purchased to which the option (Note 2) American, or derivative relates European etc. Option Purchased 250 1,600.0000 EURO 15/02/2008 Option Purchased -500,000 9.5000 EURO 19/12/2008 Option Purchased -250,000 16.0000 AMER 19/09/2008 Option Purchased -1,775 1,600.0000 EURO 20/06/2008 Option Purchased -1,250 1,200.0000 EURO 21/12/2007 Option Purchased -1,000 1,100.0000 EURO 21/12/2007 Option Purchased -1,000 1,500.0000 EURO 19/12/2008 Option Purchased -750 1,600.0000 EURO 21/12/2007 Option Purchased -650 1,900.0000 EURO 21/12/2007 Option Purchased -500 950.0000 EURO 19/12/2008 Option Purchased -500 950.0000 EURO 19/12/2008 Option Purchased -500 1,400.0000 EURO 21/12/2007 Option Purchased -1,000,000 15.0000 AMER 21/12/2007 Option Purchased 250 1,700.0000 EURO 19/12/2008 Option Purchased 500,000 9.5000 EURO 19/12/2008 Option Purchased 350 1,550.0000 EURO 21/12/2007 Option Purchased 450 1,400.0000 EURO 20/03/2008 Option Purchased 500 1,300.0000 EURO 21/12/2007 Option Purchased 500 1,400.0000 EURO 21/12/2007 Option Purchased 500 1,600.0000 EURO 21/12/2007 Option Purchased 500 1,500.0000 EURO 21/12/2007 Option Purchased 700 1,400.0000 EURO 20/03/2008 Option Purchased 1,000 2,000.0000 EURO 21/12/2007 Option Purchased 250,000 14.0000 AMER 20/06/2008 Option Purchased 250,000 14.0000 AMER 20/06/2008 Option Purchased 285,000 15.9000 AMER 21/12/2007 Option Purchased -500 1,650.0000 EURO 21/12/2007 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

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Barclays (BARC)
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