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               07 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      12,716,719      2.78%       311,407      0.07%
securities
(2) Derivatives       22,376      0.00%         1,362      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             12,739,095      2.79%       312,769      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      142                  87.7700 AUD
Purchase      2,310                87.1938 AUD
Purchase      145                  81.5000 AUD
Purchase      6,612                86.6529 AUD
Purchase      315                  87.7700 AUD
Purchase      1,688                81.5000 AUD
Purchase      33,399               82.4494 AUD
Purchase      4,554                81.5000 AUD
Purchase      652                  81.5000 AUD
Purchase      17                   84.4471 AUD
Purchase      466                  87.7700 AUD
Purchase      233                  87.7700 AUD
Purchase      40,011               83.1441 AUD
Sale          33,399               82.4494 AUD
Sale          2,917                82.6822 AUD
Sale          6,612                86.6529 AUD
Sale          2,310                87.1938 AUD
Sale          2,310                87.1938 AUD
Sale          142                  87.7700 AUD
Sale          1,841                87.7700 AUD
Sale          3,864                87.7700 AUD
Sale          6,254                87.7700 AUD
Sale          1,078                87.7700 AUD
Sale          3,018                87.3986 AUD
Sale          3,148                87.3985 AUD
Sale          468                  87.7700 AUD
Sale          2,343                87.7700 AUD
Sale          13,559               84.4800 AUD
Sale          9,660                87.7700 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          2917          82.6821
CFD            Short         17           84.447

(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                         08 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