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               15 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      46,977,265      4.71%    2,171,426       0.22%
securities
(2) Derivatives    4,726,899      0.47%    1,912,621       0.19%
(other than
options)
(3) Options and        3,206      0.00%      703,181       0.07%
agreements to
purchase/sell
Total             51,707,370      5.19%    4,787,228       0.48%


(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      250                  54.9602
Purchase      389                  54.7900
Purchase      5,119                54.5813
Purchase      3,253                54.2000
Purchase      1,103                55.2700
Purchase      861                  54.2000
Purchase      2,022                54.4998
Purchase      1,640                54.1517
Purchase      2,381                54.4135
Purchase      12,002               54.0367
Purchase      513                  54.2000
Purchase      15,264               54.3970
Purchase      5,211                 54.5812
Sale          1,000                Transfer
Sale          240                  54.5700
Sale          245                  54.5700
Sale          167                  54.5700
Sale          200                  54.5700
Sale          120                  54.5700
Sale          61                   54.9375
Sale          150                  54.1795
Sale          861                  54.2000
Sale          1,776                54.5926
Sale          100                  54.5700
Sale          181                  54.5700
Sale          178                  54.5875
Sale          110                  54.5700
Sale          1,632                54.4941
Sale          140                  54.4745
Sale          5,908                54.3097
Sale          5,119                54.5813
Sale          100                  54.6570
Sale          120                  54.5700
Sale          160                  54.5700
Sale          270                  54.5025
Sale          230                  54.5700
Sale          250                  54.5700
Sale          47                   54.6628
Sale          110                  54.5700
Sale          5,119                54.5813
Sale          32                   54.9125
Sale          37                   54.5700
Sale          100                  54.5700
Sale          190                  54.5700
Sale          80                   54.5700
Sale          75                   54.5759
Sale          70                   54.5700
Sale          11,521               55.2700
Sale          326                  54.8300
Sale          97                   54.5700
Sale          120                  54.5700
Sale          90                   54.3970
Sale          50                   54.4446
Sale          270                  54.5700
Sale          75                   54.9800
Sale          190                  54.8936
Sale          150                  54.5608
Sale          95                   54.5700
Sale          100                  54.5970
Sale          58,647               54.4763
Sale          13                   54.6131
Sale          100                  54.5700
Sale          294                  54.5700
Sale          800                  54.0153
Sale          577,069              55.2700
Sale          1,333                54.2000
Sale          160                  54.5700
Sale          140                  54.5700
Sale          3,192                54.5004
Sale          290                  54.5700
Sale          0                    58.3807
Sale          50                   54.6384
Sale          105                  54.5700
Sale          130                  54.2833

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         12002         54.0367
CFD            Short         1640          54.1517
CFD            Short         15264         54.397
CFD            Short         2381          54.4135
CFD            Short         2022          54.4998
CFD            Short         6297          54.5813
CFD            Short         250           54.9602
CFD            Long          800           54.0152
CFD            Long          5908          54.3097
CFD            Long          58647         54.4762
CFD            Long          1632          54.494
CFD            Long          3192          54.5003
CFD            Long          5119          54.5812
CFD            Long          1776          54.5926
CFD            Long          4668          54.595
CFD            Long          793           54.6085
CFD            Long          13            54.613
CFD            Long          19697         54.6387
CFD            Long          190           54.8936


(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                         16 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   -250                   2,500.0000       EURO           20/06/2008
Option            Purchased   -250                   4,200.0000       EURO           16/11/2007
Option            Purchased   -600,000               42.0000          AMER           21/12/2007
Option            Purchased   125                    4,400.0000       EURO           20/06/2008
Option            Purchased   500                    5,200.0000       EURO           21/12/2007
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   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   -225                   4,500.0000       EURO           16/11/2007



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