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               30 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      46,211,392      4.63%     2,889,311      0.29%
securities
(2) Derivatives    5,641,416      0.57%     2,591,262      0.26%
(other than
options)
(3) Options and      204,131      0.02%     1,303,231      0.13%
agreements to
purchase/sell
Total             52,056,939      5.22%     6,783,804      0.68%


(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      4,181                56.4000
Purchase      1,727                56.4000
Purchase      1,152                56.4000
Purchase      879                  56.4000
Purchase      7,813                56.6898
Purchase      1,392                56.9400
Purchase      20,000               57.0000
Purchase      135                  56.4000
Purchase      50                   Transfer
Purchase      15,000               56.4000
Purchase      3,275                56.7885
Purchase      5,188                56.5652
Purchase      897                  56.6659
Purchase      897                  56.6659
Purchase      200                  56.2607
Purchase      2,560                56.9106
Purchase      2,560                56.9106
Purchase      3,834                56.6359
Purchase      3,544                56.4071
Purchase      3,958                56.9434
Sale          398                  57.4250
Sale          200                  56.7600
Sale          554                  56.4000
Sale          1,123                57.2500
Sale          11,323               56.4000
Sale          100                  56.7340
Sale          360                  56.7600
Sale          4,723                56.8350
Sale          100                  56.7600
Sale          165                  56.4000
Sale          26,572               56.3700
Sale          15,410               56.4000
Sale          200                  56.7600
Sale          45                   57.3800
Sale          68                   56.4000
Sale          80                   57.0100
Sale          350                  56.7600
Sale          200                  56.7600
Sale          230                  57.2500
Sale          714                  56.4000
Sale          27                   56.4000
Sale          54,527               56.7045
Sale          250                  56.5350
Sale          50                   56.4000
Sale          200                  56.2607
Sale          56                   56.7450
Sale          250                  57.0100
Sale          70                   57.0100
Sale          7,813                56.6898
Sale          10,866               57.2689
Sale          100                  56.7600
Sale          55                   57.0100
Sale          4,602                57.1723
Sale          155                  56.9928
Sale          3,624                56.4000
Sale          139                  56.4000
Sale          1,446                56.4000
Sale          66,740               56.4000
Sale          150                  56.7600
Sale          14,203               56.3700
Sale          2,562                56.4000
Sale          2,883                56.4000
Sale          515                  57.1433
Sale          104                  56.4000
Sale          1,101                56.7100
Sale          12,800               56.9009
Sale          567                  56.4000
Sale          100                  56.7600
Sale          60                   57.0100
Sale          7,813                56.6898
Sale          350                  57.0100
Sale          897                  56.6659
Sale          350                  56.4000
Sale          300                  56.4475
Sale          200                  56.2607
Sale          460                  56.4000
Sale          592                  56.4000
Sale          250                  56.7600
Sale          3,757                56.4000
Sale          732                  57.0100
Sale          733                  57.2500
Sale          41                   56.6900
Sale          11                   56.4000
Sale          80                   57.0100
Sale          3,150                54.5146
Sale          458                  56.4000
Sale          1,779                56.4000
Sale          50                   57.0100
Sale          125                  56.7600
Sale          90                   56.7600
Sale          1,033                54.5146
Sale          200                  57.0100
Sale          100                  57.0100
Sale          60                   57.0100
Sale          235                  56.7600
Sale          200                  56.7600
Sale          60                   57.0100
Sale          85                   56.8800
Sale          1,411                56.8350
Sale          135                  57.0100
Sale          9,364                56.4000
Sale          200                  56.7600
Sale          15,800               54.6131
Sale          50                   56.5326
Sale          275 5                 6.4000
Sale          1,389                56.4000
Sale          614                  57.1433
Sale          250                  56.7600
Sale          869                  56.4000
Sale          9                    56.4000
Sale          100                  57.0100
Sale          1,295                56.4000
Sale          541                  56.7600
Sale          150                  56.7600
Sale          175                  56.4000
Sale          200                  56.7600
Sale          486                  56.4000
Sale          19                   56.4000
Sale          200                  56.7600
Sale          15,870               56.9139
Sale          224                  56.4000
Sale          150                  56.7600
Sale          361                  56.4000
Sale          160                  57.0100
Sale          70                   57.0100
Sale          2,560                56.9106
Sale          1,909                56.4000
Sale          100                  56.7562
Sale          45                   57.0100
Sale          100                  56.7600
Sale          300                  57.0100
Sale          891                  54.5146
Sale          2,718                56.4000
Sale          5,874                56.4000
Sale          327                  56.4000
Sale          37                   57.1930
Sale          150                  56.7600
Sale          11,991               56.4000
Sale          2,602                57.2500
Sale          175                  56.7600
Sale          115                  56.7037
Sale          2,100                56.8350
Sale          4,557                56.4000
Sale          100                  56.7600
Sale          33                   56.4000
Sale          150                  56.7600
Sale          400                  57.0100
Sale          80                   56.7600
Sale          117                  56.7600
Sale          86,000               56.5500
Sale          57,554               56.4000

NB: The below transactions which were previously disclosed have been cancelled
Deal Date  Purchase/Sale Number of Securities Price per unit (GBP)
29/11/2007 Sale          1,905                51.0554
29/11/2007 Purchase      1,905                51.0554
29/11/2007 Purchase      1,905                51.0554

(b)  Derivatives transactions (other than options)
Product name, Long/Short           Number of      Price per
(e.g. CFD)    (Note 6)             Securities     unit (GBP)
CFD           Short                572            56.4
CFD           Short                3544           56.407
CFD           Short                5188           56.5651
CFD           Short                3834           56.6358
CFD           Short                897            56.6658
CFD           Short                3275           56.7885
CFD           Short                2560           56.9106
CFD           Short                1392           56.94
CFD           Short                3958           56.9434
CFD           Long                 200            56.2607
CFD           Long                 343            56.4
CFD           Long                 7813           56.6898
CFD           Long                 54527          56.7045
CFD           Long                 1101           56.71
CFD           Long                 13770          56.8873
CFD           Long                 155            56.9927
CFD           Long                 2100           57.0878
CFD           Long                 4602           57.1723
CFD           Long                 37             57.1929
CFD           Long                 10866          57.2689

NB: The below transactions which were previously disclosed have been cancelled
Deal Date  Long/Short Number of Securities Price per unit (GBP)
29/11/2007 Short      1,905                51.0554
29/11/2007 Long       6,411                51.9423

(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          250                60        EURO           15/02/2008 4.12
PUT             PURCHASE          250                60        EURO           15/02/2008 6.43


(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 December 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   -300,000               52.0000          AMER           15/02/2008
Option            Purchased   -300,000               56.0000          AMER           15/02/2008
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   50                     5,400.0000       EURO           20/03/2008
Option            Purchased   -600,000               42.0000          AMER           21/12/2007
Option            Purchased   125                    4,400.0000       EURO           20/06/2008
Option            Purchased   200,000                60.0000          AMER           18/01/2008
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   250                    6,000.0000       EURO           15/02/2008
Option            Purchased   250                    6,000.0000       EURO           15/02/2008
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   500                    5,200.0000       EURO           21/12/2007
Option            Purchased   100                    5,600.0000       EURO           18/01/2008


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