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               30 September 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      13,489,735      2.95%       311,407      0.07%
securities
(2) Derivatives       22,376      0.00%         4,062      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,512,111      2.96%       315,469      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      42                   96.6000 AUD
Purchase      1,505                87.0570 AUD
Purchase      6,538                87.2425 AUD
Purchase      3,456                87.0570 AUD
Purchase      16,000               86.4142 AUD
Purchase      55                   96.6000 AUD
Purchase      881                  97.1766 AUD
Purchase      13,146               86.6362 AUD
Purchase      147                  96.6000 AUD
Purchase      168                  96.6000 AUD
Purchase      341                  97.1766 AUD
Purchase      13,146               86.6362 AUD
Purchase      21                   96.6000 AUD
Purchase      2,653                97.1765 AUD
Purchase      160                  97.1765 AUD
Purchase      2,312                97.1766 AUD
Purchase      1,927                84.5000 AUD
Purchase      2,900                86.9569 AUD
Purchase      265                  84.5000 AUD
Purchase      10                   96.6000 AUD
Purchase      667                  97.1766 AUD
Purchase      568                  96.6000 AUD
Purchase      8,870                97.1766 AUD
Purchase      3,288                97.1765 AUD
Purchase      209                  96.6000 AUD
Purchase      853                  97.1765 AUD
Purchase      54                   96.6000 AUD
Purchase      1,932                84.5000 AUD
Sale          6,538                87.2425 AUD
Sale          16,000               86.4142 AUD
Sale          16,000               86.4142 AUD
Sale          13,146               86.6362 AUD
Sale          1,000                87.2755 AUD
Sale          840                  84.5000 AUD
Sale          3,864                84.5000 AUD
Sale          4,562                84.5000 AUD
Sale          539                  84.5000 AUD
Sale          151                  84.5000 AUD
Sale          335                  84.5000 AUD
Sale          393                  96.6000 AUD
Sale          374                  96.6000 AUD
Sale          6,538                87.2425 AUD
Sale          507                  96.6000 AUD

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          1000          87.2755
CFD            Short         2900          86.9569

(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                         01 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