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               22 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      13,622,484      2.98%       283,865      0.06%
securities
(2) Derivatives        7,334      0.00%        27,562      0.01%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,629,818      2.98%       311,427      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      636                  122.5990 AUD
Purchase      243                  122.5991 AUD
Purchase      510                  122.5990 AUD
Purchase      399                  122.5990 AUD
Purchase      91                   122.5991 AUD
Purchase      287                  122.5990 AUD
Purchase      170                  122.5990 AUD
Purchase      1,851                122.5991 AUD
Purchase      337                  122.5990 AUD
Purchase      526                  122.5990 AUD
Purchase      1,327                122.5990 AUD
Purchase      708                  122.5990 AUD
Purchase      1,099                122.5990 AUD
Purchase      254                  122.5991 AUD
Purchase      4,737                122.2878 AUD
Purchase      1,716                122.5215 AUD
Purchase      60,917               123.3941 AUD
Purchase      60,917               123.3941 AUD
Purchase      1,208                122.5990 AUD
Purchase      16,800               122.9576 AUD
Purchase      13,162               121.1527 AUD
Purchase      464                  122.5991 AUD
Purchase      8,700                122.6590 AUD
Purchase      1,040                122.5990 AUD
Purchase      1,403                122.8223 AUD
Purchase      531                  122.5045 AUD
Purchase      1,403                122.8223 AUD
Purchase      5,596                122.5990 AUD
Purchase      153                  122.5991 AUD
Purchase      249                  122.5990 AUD
Purchase      1,001                122.5991 AUD
Purchase      3,598                122.5990 AUD
Sale          2,176                122.0224 AUD
Sale          8,183                121.0000 AUD
Sale          400                  121.5400 AUD
Sale          4,737                122.2878 AUD
Sale          6,724                122.2645 AUD
Sale          33,400               122.8776 AUD
Sale          13,162               121.1527 AUD
Sale          2,912                122.3000 AUD
Sale          13,162               121.1527 AUD
Sale          941                  121.0000 AUD
Sale          4,737                122.2878 AUD
Sale          1,403                122.8223 AUD
Sale          60,917               123.3941 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          400           121.54
CFD            Long          2176          122.0224
CFD            Long          6724          122.2644
CFD            Long          33400         122.8776
CFD            Short         531           122.5045
CFD            Short         1716          122.5214
CFD            Short         8700          122.6589
CFD            Short         16800         122.9576

(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                         26 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