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               14 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      13,685,834      3.00%       283,771      0.06%
securities
(2) Derivatives        7,240      0.00%         8,134      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,693,074      3.00%       291,905      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      324                  117.8400 AUD
Purchase      243                  117.8400 AUD
Purchase      1,085                117.8400 AUD
Purchase      110                  117.8566 AUD
Purchase      23                   117.8400 AUD
Purchase      138                  117.8566 AUD
Purchase      76                   117.8400 AUD
Purchase      47                   117.8566 AUD
Purchase      26                   117.8400 AUD
Purchase      278                  117.8400 AUD
Purchase      502                  117.8565 AUD
Purchase      193                  117.8565 AUD
Purchase      439                  117.8565 AUD
Purchase      585                  117.8565 AUD
Purchase      61                   117.8400 AUD
Purchase      336                  117.8400 AUD
Purchase      607                  117.8566 AUD
Purchase      697                  117.8400 AUD
Purchase      1,260                117.8565 AUD
Purchase      364                  117.8566 AUD
Purchase      201                  117.8400 AUD
Purchase      198                  117.8566 AUD
Purchase      109                  117.8400 AUD
Purchase      23,568               118.2302 AUD
Purchase      4,346                117.6134 AUD
Purchase      23,568               118.2302 AUD
Purchase      18,965               117.5420 AUD
Purchase      107                  117.8400 AUD
Purchase      416                  117.8565 AUD
Purchase      1,961                117.8566 AUD
Purchase      236                  117.9500 AUD
Purchase      99                   117.8400 AUD
Purchase      178                  117.8566 AUD
Purchase      19                   117.8400 AUD
Purchase      34                   117.8565 AUD
Purchase      43                   117.8566 AUD
Purchase      112                  117.8400 AUD
Purchase      230                  117.8400 AUD
Purchase      35                   117.8400 AUD
Purchase      64                   117.8566 AUD
Purchase      296                  117.8400 AUD
Purchase      105                  117.8565 AUD
Purchase      203                  117.8566 AUD
Purchase      58                   117.8400 AUD
Purchase      1,214                117.8400 AUD
Purchase      536                  117.8565 AUD
Purchase      591                  117.8565 AUD
Purchase      468                  117.8400 AUD
Purchase      2,183                117.8565 AUD
Purchase      845                  117.8565 AUD
Purchase      327                  117.8400 AUD
Sale          1,175                115.5185 AUD
Sale          201                  115.7500 AUD
Sale          23,568               118.2302 AUD
Sale          309                  115.7269 AUD
Sale          1,398                118.0790 AUD
Sale          625                  115.7500 AUD
Sale          380                  115.7500 AUD
Sale          3,234                117.9500 AUD
Sale          123                  117.8400 AUD
Sale          6,301                117.8400 AUD
Sale          200                  118.2550 AUD
Sale          92                   115.7500 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          309           115.7268
CFD            Long          1398          118.079
CFD            Long          200           118.255
CFD            Short         18965         117.542
CFD            Short         4346          117.6133

(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                         15 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