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               29 August 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      13,693,568      3.00%       288,129      0.06%
securities
(2) Derivatives       11,598      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,705,166      3.00%       288,129      0.06%


(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      561                  127.5000 AUD
Purchase      371                  127.5000 AUD
Purchase      1,647                127.5000 AUD
Purchase      275                  127.5000 AUD
Purchase      2,107                127.5000 AUD
Purchase      623                  127.5000 AUD
Purchase      3,232                127.5000 AUD
Purchase      13,893               125.9015 AUD
Purchase      62                   127.5000 AUD
Purchase      21,610               127.5000 AUD
Purchase      2,906                127.5000 AUD
Purchase      3,394                127.5000 AUD
Purchase      17,500               126.8665 AUD
Purchase      29,214               126.3722 AUD
Purchase      273                  126.4553 AUD
Purchase      29,214               126.3722 AUD
Purchase      321                  127.5000 AUD
Purchase      5,000                126.4300 AUD
Purchase      394                  127.3849 AUD
Purchase      149                  127.5000 AUD
Purchase      3,926                125.8819 AUD
Purchase      341                  125.9015 AUD
Purchase      1,617                127.5000 AUD
Purchase      6,338                127.5000 AUD
Sale          2,800                124.6542 AUD
Sale          321                  127.5000 AUD
Sale          149                  127.5000 AUD
Sale          3,318                127.4745 AUD
Sale          184                  126.4217 AUD
Sale          2,127                125.5342 AUD
Sale          1,647                127.5000 AUD
Sale          6,338                127.5000 AUD
Sale          1,461                126.1092 AUD
Sale          295                  127.5000 AUD
Sale          1,617                127.5000 AUD
Sale          21,610               127.5000 AUD
Sale          3,232                127.5000 AUD
Sale          2,906                127.5000 AUD
Sale          2,152                126.4300 AUD
Sale          91                   126.4300 AUD
Sale          2,107                127.5000 AUD
Sale          3,394                127.5000 AUD
Sale          29,214               126.3722 AUD
Sale          95                   127.3684 AUD
Sale          275                  127.5000 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          2800          124.6541
CFD            Long          184           126.4216
CFD            Long          3318          127.4745
CFD            Short         273           126.4552
CFD            Short         17500         126.8664

(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 September 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