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               17 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      12,797,675      2.80%       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             12,820,051      2.81%       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      29,498               63.3192 AUD
Purchase      367                  68.5100 AUD
Purchase      9,180                62.6200 AUD
Purchase      29,498               63.3192 AUD
Sale          14,570               63.5903 AUD
Sale          170                  63.5903 AUD
Sale          15,734               63.5903 AUD
Sale          522                  63.5904 AUD
Sale          881                  63.5903 AUD
Sale          7,550                63.5904 AUD
Sale          1,471                63.5903 AUD
Sale          1,192                63.5904 AUD
Sale          661                  63.5904 AUD
Sale          1,791                62.6200 AUD
Sale          29,498               63.3192 AUD
Sale          3,223                63.5904 AUD
Sale          1,143                63.5903 AUD
Sale          11,519               64.7144 AUD
Sale          51,995               63.5903 AUD
Sale          104,560              64.7144 AUD
Sale          31,601               64.7144 AUD
Sale          1,196                63.5904 AUD
Sale          1,212                63.5903 AUD
Sale          4,591                63.5904 AUD
Sale          3,911                63.5903 AUD
Sale          1,758                63.5904 AUD
Sale          3,235                63.5903 AUD
Sale          5,290                63.5904 AUD
Sale          2,368                63.5903 AUD
Sale          3,597                63.5903 AUD
Sale          40,473               64.7144 AUD
Sale          3,188                63.5904 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                         20 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