Rule 8.3 - RIO TINTO PLC

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
Class of relevant security    ORD GBP0.10
to which the dealings being
disclosed relate (Note 2)
Date of dealing               02 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      44,647,033      4.47%       950,385      0.10%
securities
(2) Derivatives      699,933      0.07%       104,256      0.01%
(other than
options)
(3) Options and      101,200      0.01%         1,030      0.00%
agreements to
purchase/sell
Total             45,448,166      4.55%     1,055,671      0.11%


(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         1,200                 55.3583
Purchase         3,322                 55.1100
Purchase         10,649                55.9470
Purchase         915                   55.1100
Purchase         71,835                56.7055
Purchase         42,112                59.1300
Purchase         4,314                 55.1169
Purchase         84,225                59.1300
Purchase         27,988                55.7172
Purchase         60                    58.6200
Purchase         2,000                 55.5083
Purchase         33,395                58.6404
Purchase         11,800                58.7641
Purchase         42,112                59.1300
Purchase         1,462                 58.3000
Purchase         4,000                 58.2205
Purchase         14,100                 58.7748
Purchase         678                   57.9702
Purchase         24,840                58.4476
Purchase         12,729                58.1643
Purchase         42,112                58.5000
Purchase         186                   55.5100
Purchase         576                   58.8210
Purchase         492                   58.8210
Purchase         236                   58.8210
Purchase         232                   58.8210
Purchase         166                   58.0200
Purchase         485                   58.8210
Purchase         208                   58.8210
Purchase         234                   58.8210
Purchase         209                   58.8210
Purchase         77                    58.6200
Purchase         288                   58.8210
Purchase         500                   74.4200 EUR
Sale             1,143                 58.8020
Sale             3,138                 58.5084
Sale             1,914                 57.2829
Sale             8,189                 58.1606
Sale             379                   58.7700
Sale             16,879                56.5342
Sale             6,000                 55.1100
Sale             10,649                55.9470
Sale             103                   57.9345
Sale             2                     55.5000
Sale             7,968                 55.4585
Sale             4,333                 56.1227
Sale             16,599                56.6074
Sale             35                    59.2614
Sale             50                    58.7532
Sale             50                    59.2008
Sale             3,857                 55.1100
Sale             929                   55.1100
Sale             30                    58.6633
Sale             150                   59.0690
Sale             150                   59.2330
Sale             2,106                 57.5031
Sale             75                    58.5000
Sale             15,688                56.2488
Sale             39                    58.2175
Sale             1,282                 59.2083
Sale             11,600                56.9549
Sale             3,773                 57.1092
Sale             1,081                 58.8020
Sale             671                   58.8020
Sale             210                   58.5175
Sale             60                    58.2332
Sale             210,560               59.0040
Sale             150                   58.6524



(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          2             55.5
CFD            Long          10649         55.9469
CFD            Long          4333          56.1227
CFD            Long          15688         56.2487
CFD            Long          16879         56.5341
CFD            Long          16599         56.6073
CFD            Long          11600         56.9548
CFD            Long          3773          57.1091
CFD            Long          1914          57.2828
CFD            Long          2106          57.503
CFD            Long          8189          58.1605
CFD            Short         4314          55.1168
CFD            Short         1200          55.3583
CFD            Short         2000          55.5083
CFD            Short         27988         55.7171
CFD            Short         10649         55.9469
CFD            Short         71835         56.7055
CFD            Short         12729         58.1642
CFD            Short         4000          58.2205
CFD            Short         24840         58.4476
CFD            Short         33395         58.6403
CFD            Short         14100         58.7748
CFD            Short         1626          59.0452



(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)                 YES


Date of disclosure                         03 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

SUPPLEMENTAL FORM 8

DETAILS OF OPEN POSITIONS
(This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate)

OPEN POSITIONS (Note 1)
Product name,     Written or  Number of securities   Exercise price   Type, e.g.     Expiry date
e.g. call option  purchased   to which the option    (Note 2)         American,
                              or derivative relates                   European etc.
Option            Purchased   100,000                56.0000          AMER           18/12/2009
Option            Purchased   500                    5,000.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   -135                   5,200.0000       EURO           19/12/2008
Option            Purchased   -145                   5,200.0000       EURO           19/12/2008
Option            Purchased   -250                   5,200.0000       EURO           19/09/2008
Option            Purchased   -500                   7,000.0000       EURO           19/12/2008



Notes

1. Where there are open option positions or open derivative positions (except for CFDs), full details should be given.
Full details of any  existing agreements to purchase or to sell  should also be given on this form.

2. For all prices and other monetary amounts, the currency must be stated.

For details of the Code's dealing disclosure requirements, see Rule 8 and its Notes which can be viewed on the Takeover
Panel's website at www.thetakeoverpanel.org.uk