Rule 8.3 - RIO TINTO 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 RIO TINTO Class of relevant security ORD GBP0.10 to which the dealings being disclosed relate (Note 2) Date of dealing 26 November 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 46,776,867 4.69% 2,834,896 0.28% securities (2) Derivatives 5,302,399 0.53% 2,303,732 0.23% (other than options) (3) Options and 3,631 0.00% 703,231 0.07% agreements to purchase/sell Total 52,082,897 5.22% 5,841,859 0.59% (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 4,536 53.8284 Purchase 500 54.5273 Purchase 8,171 52.3200 Purchase 13,492 55.1608 Purchase 300 52.8266 Purchase 13,671 54.2292 Purchase 483 52.4072 Purchase 36,439 53.3401 Purchase 10,524 52.3200 Purchase 408 54.7051 Purchase 135 54.2354 Purchase 14,288 54.5269 Purchase 251 54.7051 Purchase 239 54.7051 Purchase 1,377 54.7051 Purchase 1,635 52.3200 Sale 27,500 53.0000 Sale 162 53.2200 Sale 1,831 54.1973 Sale 295 54.6350 Sale 400 53.0100 Sale 100 54.6300 Sale 217 55.7000 Sale 13,671 54.2292 Sale 150 54.6300 Sale 100 52.6850 Sale 150 54.6300 Sale 150 52.2600 Sale 150 54.6300 Sale 18,349 52.3200 Sale 180 54.6350 Sale 47,000 55.1309 Sale 15 51.0125 Sale 800 52.4733 Sale 510 53.2200 Sale 249 52.3200 Sale 27 54.6150 Sale 50 54.5484 Sale 13,671 54.2292 Sale 1,016 53.2200 Sale 103 54.7200 Sale 81 53.2200 Sale 100 54.6300 Sale 125 54.6300 Sale 250 54.6300 Sale 325 54.5950 Sale 250 54.6300 Sale 100 52.1745 Sale 150 54.6300 Sale 15 52.0700 Sale 800 52.0406 Sale 250 54.9150 Sale 27 51.3650 Sale 100 53.1375 Sale 300 54.0800 Sale 125 53.3683 Sale 150 54.6300 Sale 150 54.6300 Sale 406 53.2200 Sale 14,329 52.3200 Sale 100 54.6300 Sale 1,644 52.6600 Sale 36 52.4078 Sale 140,998 54.4841 Sale 200 52.5050 Sale 80 54.9150 Sale 123 53.2200 Sale 26,292 54.5289 Sale 2,060 52.3200 Sale 200 54.0800 Sale 75 54.3859 Sale 20 52.0050 Sale 6,107 54.4291 Sale 150 54.4670 Sale 24 55.1350 Sale 150 53.3125 Sale 20 50.8100 Sale 130 54.2300 Sale 375 52.4600 Sale 256 55.7000 Sale 2,930 52.3200 Sale 100 54.5233 NB: The below transactions which were previously disclosed have been cancelled Deal Date Purchase/Sale Number of Securities Price per unit (GBP) 23/11/2007 Sale 13,750 53.0000 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) CFD Short 300 52.8266 CFD Short 36439 53.34 CFD Short 4536 53.8284 CFD Short 135 54.2354 CFD Short 14288 54.5268 CFD Short 500 54.5273 CFD Long 800 52.0406 CFD Long 1831 54.1972 CFD Long 13671 54.2291 CFD Long 4344 54.2796 CFD Long 140998 54.484 CFD Long 26292 54.5288 CFD Long 1763 54.7974 (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) CALL Purchase 50 54 EURO 20/03/2008 5.7 (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 27 November 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 125 4,400.0000 EURO 20/06/2008 Option Purchased -100,000 30.0000 AMER 20/06/2008 Option Purchased -1,000 3,500.0000 EURO 21/12/2007 Option Purchased -500 4,400.0000 EURO 21/12/2007 Option Purchased -350 5,200.0000 EURO 21/12/2007 Option Purchased -306 4,200.0000 EURO 21/12/2007 Option Purchased -300 3,800.0000 EURO 20/06/2008 Option Purchased -275 4,800.0000 EURO 21/12/2007 Option Purchased -250 2,500.0000 EURO 20/06/2008 Option Purchased -250 5,200.0000 EURO 20/03/2008 Option Purchased -600,000 42.0000 AMER 21/12/2007 Option Purchased 100 5,600.0000 EURO 18/01/2008 Option Purchased 500 5,200.0000 EURO 21/12/2007 Option Purchased 125 4,400.0000 EURO 20/06/2008 Option Purchased 250 3,000.0000 EURO 20/06/2008 Option Purchased 250 3,300.0000 EURO 21/12/2007 Option Purchased 250 3,800.0000 EURO 20/06/2008 Option Purchased 250 4,500.0000 EURO 21/12/2007 Option Purchased 275 5,000.0000 EURO 21/12/2007 Option Purchased 306 4,800.0000 EURO 21/12/2007 Option Purchased 350 4,600.0000 EURO 19/12/2008 Option Purchased 350 4,600.0000 EURO 19/12/2008 Option Purchased 450 3,500.0000 EURO 21/12/2007 Option Purchased 25 5,400.0000 EURO 20/03/2008 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

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Barclays (BARC)
UK 100

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