Rule 8.3 - RIO TINTO LTD

On previous Rule 8.3 reports for this issuer, nominee interests have been included. We are now advised that such interests should not be included and the figures shown below reflect the revised calculations. 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 LIMITED Class of relevant security NPV to which the dealings being disclosed relate (Note 2) Date of dealing 07 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 14,081,456 3.08% 2,145,400 0.47% securities (2) Derivatives 18,048 0.00% 1,922 0.00% (other than options) (3) Options and 0 0.00% 0 0.00% agreements to purchase/sell Total 14,099,504 3.09% 2,147,322 0.47% (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 626 143.9006 AUD Purchase 6,667 145.3980 AUD Purchase 1,878 145.4655 AUD Purchase 5,260 145.4800 AUD Purchase 1,192 145.4800 AUD Purchase 364 144.1452 AUD Purchase 1,044 145.4800 AUD Purchase 5,748 145.4800 AUD Purchase 20,497 144.2238 AUD Purchase 2,000 143.9615 AUD Purchase 20,497 144.2238 AUD Purchase 14,715 143.1078 AUD Purchase 486 145.4800 AUD Purchase 4,500 144.6608 AUD Purchase 1,700 143.9615 AUD Sale 119 144.8618 AUD Sale 8,545 145.4128 AUD Sale 239 144.8617 AUD Sale 872 144.8618 AUD Sale 285 144.8618 AUD Sale 398 144.8618 AUD Sale 72 144.8619 AUD Sale 209 144.8618 AUD Sale 362 144.8618 AUD Sale 473 144.8618 AUD Sale 506 144.8618 AUD Sale 605 144.8618 AUD Sale 505 144.8618 AUD Sale 20,497 144.2238 AUD Sale 6,667 145.3980 AUD Sale 1,878 145.4655 AUD Sale 16,992 143.1856 AUD Sale 14,715 143.1078 AUD Sale 159 144.8618 AUD (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) CFD Short 4500 144.6607 CFD Long 16992 143.1855 (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) NO Date of disclosure 10 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

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