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 January 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      50,283,530      5.04%      903,233       0.09%
securities
(2) Derivatives    2,349,705      0.24%      144,386       0.01%
(other than
options)
(3) Options and        2,500      0.00%      700,800       0.07%
agreements to
purchase/sell
Total             52,636,035      5.28%     1,748,419      0.18%


(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      810                      44.5552
Purchase      976                      44.5552
Purchase      971                      44.3797
Purchase      714                      43.6200
Purchase      453                      44.5552
Purchase      299                      43.5768
Purchase      2,125                    45.1900
Purchase      622                      44.5552
Purchase      734                      44.5552
Purchase      167                      43.6200
Purchase      13,947                   44.5552
Purchase      524                      43.5768
Purchase      269                      43.5768
Purchase      27,191                   44.4763
Purchase      60                       58.0000 EUR
Purchase      597                      44.2874
Purchase      2,600                    43.3911
Purchase      174                      45.1900
Purchase      42,810                   45.1900
Purchase      19,179                   45.1900
Purchase      770                      Transfer
Purchase      689                      43.6200
Purchase      605                      44.5552
Purchase      18,880                   43.9694
Purchase      5,762                    44.5552
Purchase      248                      44.7800
Sale          27,191                   44.4763
Sale          7,580                    44.2981
Sale          597                      44.2874
Sale          5,590                    41.5900
Sale          2,600                    43.3911
Sale          3,106                    45.1900
Sale          2,300                    41.5900
Sale          3,094                    44.0328
Sale          2,600                    43.3911
Sale          83,492                   44.1963
Sale          200                      44.4325
Sale          57,000                   45.1764
Sale          2,409                    43.1872
Sale          2,744                    45.1900
Sale          6,415                    41.5900
Sale          133                      44.9750
Sale          87                       42.5000
Sale          175                      43.6875
Sale          27,191                   44.4763
Sale          724                      45.0700
Sale          597                      44.2874
Sale          8,814                    41.5900
Sale          7,700                    43.7657
Sale          41                       43.5400
Sale          17,396                   44.1147
Sale          10                       44.2930
Sale          19,167                   45.1900
Sale          118,831                  42.9500

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         1500          43.3472
CFD            Short         17380         44.023
CFD            Long          2600          43.3911
CFD            Long          7700          43.7656
CFD            Long          3094          44.0328
CFD            Long          15758         44.0953
CFD            Long          83492         44.1962
CFD            Long          597           44.2874
CFD            Long          10            44.293
CFD            Long          7580          44.298
CFD            Long          1638          44.3005
CFD            Long          27191         44.4762

(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 January 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   150                    4,400.0000       EURO           20/03/2008
Option            Purchased   -300,000               52.0000          AMER           15/02/2008
Option            Purchased   -100,000               30.0000          AMER           20/06/2008
Option            Purchased   -300                   3,800.0000       EURO           20/06/2008
Option            Purchased   -250                   5,200.0000       EURO           20/03/2008
Option            Purchased   -250                   2,500.0000       EURO           20/06/2008
Option            Purchased   50                     5,400.0000       EURO           20/03/2008
Option            Purchased   -300,000               56.0000          AMER           15/02/2008
Option            Purchased   125                    4,400.0000       EURO           20/06/2008
Option            Purchased   500                    5,600.0000       EURO           15/02/2008
Option            Purchased   150                    4,000.0000       EURO           20/03/2008
Option            Purchased   250                    6,000.0000       EURO           15/02/2008
Option            Purchased   250                    6,000.0000       EURO           15/02/2008
Option            Purchased   250                    3,800.0000       EURO           20/06/2008
Option            Purchased   250                    3,000.0000       EURO           20/06/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   125                    4,400.0000       EURO           20/06/2008

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