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 July 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      13,530,936      2.96%       299,835      0.07%
securities
(2) Derivatives       23,304      0.01%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,554,240      2.97%       299,835      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      1,270                121.6669 AUD
Purchase      439                  121.6900 AUD
Purchase      11,028               121.6668 AUD
Purchase      227                  121.6668 AUD
Purchase      646                  121.6668 AUD
Purchase      204                  121.6900 AUD
Purchase      308                  121.6668 AUD
Purchase      2,718                121.6668 AUD
Purchase      1,806                121.6900 AUD
Purchase      661                  121.6668 AUD
Purchase      513                  121.6900 AUD
Purchase      150                  121.6900 AUD
Purchase      844                  121.6900 AUD
Purchase      1,618                121.6900 AUD
Purchase      2,436                121.6668 AUD
Purchase      334                  121.5000 AUD
Purchase      6,281                121.8708 AUD
Purchase      6,281                121.8708 AUD
Purchase      17,000               121.7715 AUD
Purchase      1,701                121.4879 AUD
Purchase      773                  121.6669 AUD
Purchase      984                  121.6900 AUD
Purchase      141                  121.6900 AUD
Purchase      386                  121.6900 AUD
Purchase      428                  121.6900 AUD
Purchase      355                  121.6668 AUD
Purchase      235                  121.6900 AUD
Purchase      214                  121.6669 AUD
Purchase      1,482                121.6669 AUD
Purchase      582                  121.6669 AUD
Purchase      646                  121.6900 AUD
Purchase      972                  121.6668 AUD
Purchase      123                  121.5000 AUD
Purchase      7,343                121.6900 AUD
Purchase      507                  121.6900 AUD
Purchase      763                  121.6669 AUD
Purchase      1,267                121.6669 AUD
Purchase      841                  121.6900 AUD
Sale          1,701                121.4879 AUD
Sale          568                  121.6900 AUD
Sale          1,701                121.4879 AUD
Sale          1,048                121.6900 AUD
Sale          778                  121.6900 AUD
Sale          2,631                121.6900 AUD
Sale          2,649                121.6900 AUD
Sale          4,253                121.6900 AUD
Sale          374                  121.6900 AUD
Sale          1,506                121.6900 AUD
Sale          6,281                121.8708 AUD
Sale          3,278                121.6900 AUD

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         17000         121.7714

(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                         31 July 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