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               24 June 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      44,646,906      4.47%       991,061      0.10%
securities
(2) Derivatives      769,162      0.08%        81,076      0.01%
(other than
options)
(3) Options and      101,200      0.01%         1,030      0.00%
agreements to
purchase/sell
Total             45,517,268      4.56%     1,073,167      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         77                    Transfer
Purchase         2,008                 61.1300
Purchase         210                   60.2922
Purchase         3,800                 60.7761
Purchase         270                   60.2922
Purchase         175                   60.2922
Purchase         1,200                 60.5691
Purchase         6,849                 60.1000
Purchase         230                   60.2922
Purchase         483                   59.6200
Purchase         600                   60.0600
Purchase         20,958                60.3569
Purchase         937                   61.1413
Purchase         77                    Transfer
Purchase         68,532                60.0201
Purchase         75                    59.4295
Purchase         21,218                60.1587
Purchase         21,305                60.1259
Purchase         198                   59.6200
Purchase         32,200                61.0890
Purchase         6,300                 60.8153
Purchase         680                   59.6200
Purchase         50                    59.9740
Purchase         571                   59.6200
Purchase         443                   59.6200
Purchase         206                   60.4871
Sale             12,196                59.8043
Sale             600                   117.0300 USD
Sale             19,774                59.7479
Sale             389                   117.0300 USD
Sale             175                   117.0300 USD
Sale             1,052                 117.3000 USD
Sale             77                    Transfer
Sale             5,861                 59.4418
Sale             190                   118.9300 USD
Sale             4,614                 60.5221
Sale             221                   117.0300 USD
Sale             350                   117.0300 USD
Sale             5,741                 59.9215
Sale             300                   117.0300 USD
Sale             3,110                 59.5952
Sale             750                   117.0300 USD
Sale             402                   117.0300 USD
Sale             300                   117.0300 USD
Sale             180                   117.0300 USD
Sale             41                    60.0105
Sale             406                   117.0300 USD
Sale             5                     59.6860
Sale             1,900                 59.8961
Sale             100                   118.9300 USD
Sale             450                   117.0300 USD
Sale             122                   117.0300 USD
Sale             400                   117.0300 USD
Sale             700                   59.5800
Sale             7,171                 60.1000
Sale             1,200                 117.0300 USD
Sale             150                   59.8320
Sale             211                   60.3069
Sale             180                   61.0132
Sale             365                   60.7922
Sale             100                   59.4448
Sale             1,248                 60.1000
Sale             150                   61.1022
Sale             10,032                60.1000
Sale             5,807                 59.7889
Sale             30                    75.0600 EUR
Sale             13,294                59.5937
Sale             5,076                 60.1000
Sale             21,791                59.5942
Sale             5,960                 59.7889
Sale             329                   59.7889
Sale             75                    59.6088
Sale             205                   117.0300 USD
Sale             200                   117.0300 USD
Sale             77                    Transfer
Sale             150                   117.0300 USD
Sale             200                   60.9500
Sale             450                   117.0300 USD
Sale             370                   117.0300 USD
Sale             50                    60.0600
Sale             8,161                 59.5830
Sale             816                   117.0300 USD
Sale             408                   59.4323
Sale             52,379                60.1000
Sale             120                   59.3932
Sale             4,921                 60.1000
Sale             6,849                 60.1000
Sale             1,004                 60.3069
Sale             33,280                60.1000
Sale             1,000                 59.5800


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          5861          59.4417
CFD            Long          8161          59.5829
CFD            Long          3110          59.5951
CFD            Long          19774         59.7479
CFD            Long          263           59.7598
CFD            Long          12196         59.8042
CFD            Long          1900          59.8961
CFD            Long          5741          59.9214
CFD            Long          3024          60.1121
CFD            Long          1332          60.5052
CFD            Long          4614          60.5221
CFD            Short         68532         60.02
CFD            Short         21218         60.1586
CFD            Short         20958         60.3569
CFD            Short         1200          60.5691
CFD            Short         3800          60.776
CFD            Short         6300          60.8153
CFD            Short         32200         61.089
CFD            Short         937           61.1413


(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                         25 June 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