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               27 November 2007

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      46,692,956      4.68%     2,774,782      0.28%
securities
(2) Derivatives    5,337,157      0.54%     2,428,690      0.24%
(other than
options)
(3) Options and        3,631      0.00%        703,231     0.07%
agreements to
purchase/sell
Total             52,033,744      5.22%      5,906,703     0.59%


(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      40,315               51.5570
Purchase      980                  51.5715
Purchase      6,625                51.5884
Purchase      50,243               51.4400
Purchase      346                  51.3834
Purchase      6,342                51.6600
Purchase      7,698                51.6600
Purchase      4,164                51.5399
Purchase      18                   54.1300
Purchase      1,690                51.5018
Purchase      6,625                51.5884
Purchase      4,113                51.6600
Purchase      500                  51.5655
Purchase      51,624               51.5387
Purchase      37,000               51.4406
Purchase      60,355               51.7860
Sale          7,603                51.3923
Sale          100                  51.3500
Sale          15                   55.0325
Sale          171,859              52.3200
Sale          41                   54.9575
Sale          980                  51.5715
Sale          48                   54.9650
Sale          8,598                51.5073
Sale          158                  51.4072
Sale          12                   54.9575
Sale          26                   51.3200
Sale          13,900               51.3645
Sale          3,825                51.5073
Sale          23,000               51.1538
Sale          60                   55.0150
Sale          180                  51.6075
Sale          21                   54.9700
Sale          44                   55.0312
Sale          250                  51.7350
Sale          346                  51.3834
Sale          75                   51.0625
Sale          42                   51.3275
Sale          346                  51.3834
Sale          50,243               51.4400
Sale          45                   51.5825
Sale          980                  51.5715
Sale          6,342                51.6600
Sale          7,052                51.2053
Sale          6,625                51.5884
Sale          2,125                51.4637
Sale          500                  52.3120
Sale          35                   55.0225
Sale          60                   50.8150
Sale          50,243               51.4400
Sale          100                  50.9350
Sale          1,200                51.7100
Sale          45                   54.9575
Sale          100                  51.3300
Sale          2,573                51.5073
Sale          2,752                51.6063

(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           51.3121
CFD           Short                1690           51.5018
CFD           Short                51624          51.5387
CFD           Short                500            51.5655
CFD           Short                6625           51.5884
CFD           Short                2664           51.6681
CFD           Short                60355          51.786
CFD           Long                 7052           51.2052
CFD           Long                 13900          51.3644
CFD           Long                 346            51.3834
CFD           Long                 7603           51.3922
CFD           Long                 2125           51.4637
CFD           Long                 980            51.5715
CFD           Long                 2752           51.6063

(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)
CALL            Purchase          50                 54        EURO            20/03/2008         5.7

(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                         28 November 2007
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   125                    4,400.0000      EURO            20/06/2008
Option            Purchased   -100,000               30.0000         AMER            20/06/2008
Option            Purchased   -1,000                 3,500.0000      EURO            21/12/2007
Option            Purchased   -500                   4,400.0000      EURO            21/12/2007
Option            Purchased   -350                   5,200.0000      EURO            21/12/2007
Option            Purchased   -306                   4,200.0000      EURO            21/12/2007
Option            Purchased   -300                   3,800.0000      EURO            20/06/2008
Option            Purchased   -275                   4,800.0000      EURO            21/12/2007
Option            Purchased   -250                   2,500.0000      EURO            20/06/2008
Option            Purchased   -250                   5,200.0000      EURO            20/03/2008
Option            Purchased   -600,000               42.0000         AMER            21/12/2007
Option            Purchased   100                    5,600.0000      EURO            18/01/2008
Option            Purchased   500                    5,200.0000      EURO            21/12/2007
Option            Purchased   125                    4,400.0000      EURO            20/06/2008
Option            Purchased   250                    3,000.0000      EURO            20/06/2008
Option            Purchased   250                    3,300.0000      EURO            21/12/2007
Option            Purchased   250                    3,800.0000      EURO            20/06/2008
Option            Purchased   250                    4,500.0000      EURO            21/12/2007
Option            Purchased   275                    5,000.0000      EURO            21/12/2007
Option            Purchased   306                    4,800.0000      EURO            21/12/2007
Option            Purchased   350                    4,600.0000      EURO            19/12/2008
Option            Purchased   350                    4,600.0000      EURO            19/12/2008
Option            Purchased   450                    3,500.0000      EURO            21/12/2007
Option            Purchased   50                     5,400.0000      EURO            20/03/2008
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