Rule 8.3 - RIO TINTO Limited

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               15 October 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      13,191,317      2.89%       311,407      0.07%
securities
(2) Derivatives       22,376      0.00%           689      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,213,693      2.89%       312,096      0.07%


(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      468                  78.5000 AUD
Purchase      3,471                80.9919 AUD
Purchase      237                  78.5079 AUD
Purchase      237                  78.5079 AUD
Purchase      1,368                78.5000 AUD
Purchase      188                  78.5000 AUD
Sale          2,819                79.2858 AUD
Sale          948                  79.2857 AUD
Sale          3,176                79.2857 AUD
Sale          996                  79.2858 AUD
Sale          39                   79.2857 AUD
Sale          12,567               79.2857 AUD
Sale          123                  79.2857 AUD
Sale          2,847                79.2858 AUD
Sale          803                  79.2858 AUD
Sale          11,689               79.2857 AUD
Sale          589                  79.2858 AUD
Sale          5,240                78.9602 AUD
Sale          3,592                79.2857 AUD
Sale          512                  78.9602 AUD
Sale          188                  78.5000 AUD
Sale          3,849                78.5000 AUD
Sale          3,676                78.5000 AUD
Sale          3,471                80.9919 AUD
Sale          138                  79.2858 AUD
Sale          1,766                78.9602 AUD
Sale          237                  78.5079 AUD
Sale          890                  78.9602 AUD
Sale          426                  78.9602 AUD
Sale          40,514               79.2857 AUD
Sale          415                  78.9602 AUD
Sale          592                  78.9602 AUD
Sale          5,917                78.9602 AUD
Sale          3,796                78.9602 AUD
Sale          4,329                79.2858 AUD
Sale          3,129                78.9602 AUD
Sale          3,471                80.9919 AUD
Sale          1,884                78.9602 AUD
Sale          320                  78.9602 AUD
Sale          2,011                78.9602 AUD
Sale          932                  79.2857 AUD
Sale          181                  79.2857 AUD
Sale          1,256                79.2858 AUD
Sale          1,254                79.2858 AUD
Sale          2,914                79.2857 AUD
Sale          2,444                79.2857 AUD
Sale          101                  78.9602 AUD

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)



(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                         16 October 2008
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