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               11 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      13,624,066      2.98%       297,614      0.07%
securities
(2) Derivatives       21,083      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,645,149      2.99%       297,614      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      2,724                112.1739 AUD
Purchase      36,500               112.5648 AUD
Purchase      9,058                112.1739 AUD
Purchase      5,459                112.1739 AUD
Purchase      939                  112.1739 AUD
Purchase      4,657                112.1739 AUD
Purchase      468                  112.1740 AUD
Purchase      490                  112.1739 AUD
Purchase      8,409                112.1740 AUD
Purchase      622                  112.1740 AUD
Purchase      2,027                112.1740 AUD
Purchase      650                  112.1740 AUD
Purchase      1,902                112.1740 AUD
Purchase      1,522                112.1740 AUD
Purchase      338                  113.9900 AUD
Purchase      628                  112.1740 AUD
Purchase      1,526                113.9667 AUD
Purchase      3,285                113.9666 AUD
Purchase      731                  113.9900 AUD
Purchase      21,374               112.1739 AUD
Purchase      804                  116.0000 AUD
Purchase      682                  112.1739 AUD
Purchase      342                  112.1739 AUD
Purchase      1,001                112.1739 AUD
Purchase      208                  112.1739 AUD
Purchase      2,405                112.1739 AUD
Purchase      4,595                112.1739 AUD
Purchase      3,437                112.1739 AUD
Purchase      1,232                112.1739 AUD
Sale          122                  113.1400 AUD
Sale          118                  113.0274 AUD
Sale          3,623                111.6600 AUD
Sale          1,069                113.9900 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          118           113.0273
CFD            Short         36500         112.5648

(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                         12 August 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