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 PLC
Class of relevant security    ORD GBP0.10
to which the dealings being
disclosed relate (Note 2)
Date of dealing               13 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       47,374,559     4.75%    2,196,222      0.22%
securities
(2) Derivatives     4,536,383     0.45%    1,758,341      0.18%
(other than
options)
(3) Options and         3,206     0.00%      703,181      0.07%
agreements to
purchase/sell
Total              51,914,148     5.21%    4,657,744      0.47%


(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           Price per unit
                   Securities          (GBP)
Purchase           4,045               53.5513
Purchase           41,365              54.5605
Purchase           120,795             54.6118
Purchase           108,020             53.8393
Purchase           108,020             53.8394
Purchase           800                 54.0104
Purchase           20,806              54.0392
Purchase           59,000              Transfer
Purchase           39,600              Transfer
Purchase           48,015              53.8394
Purchase           2,500               54.3119
Purchase           200                 54.3650
Purchase           25,511              54.2625
Purchase           407                 55.7813
Purchase           156,035             53.8393
Purchase           109                 53.6200
Purchase           48,015              53.8393
Purchase           284                 55.7813
Purchase           41,000              53.5045
Purchase           5,868               53.9930
Sale               126,000             54.2500
Sale               39,600              56.5800
Sale               177                 53.5800
Sale               235                 53.6925
Sale               1,110               54.6911
Sale               69,894              53.9000
Sale               500                 54.0183
Sale               3,892               53.9000
Sale               130                 54.3720
Sale               648                 Transfer
Sale               28                  54.0625
Sale               100                 53.9833
Sale               130                 53.5600
Sale               373                 55.4500
Sale               59,000              Transfer
Sale               584                 54.9400
Sale               650                 53.7100
Sale               185                 53.7658
Sale               250                 54.0183
Sale               4,567               54.2229
Sale               70                  53.7150
Sale               60                  54.2475
Sale               39,600              Transfer
Sale               126                 54.8925
Sale               41,502              54.6060
Sale               250                 54.2645
Sale               305                 54.4607
Sale               59,000              56.5800
Sale               135                 53.6925
Sale               12,401              54.9035
Sale               108,020             53.8393
Sale               9,672               54.1915
Sale               48,015              53.8393
Sale               90                  53.6926
Sale               56,432              55.2230
Sale               50,216              53.9000
Sale               9,318               53.9000
Sale               49                  54.3725
Sale               515                 54.1095
Sale               140                 54.1170
Sale               3,936               54.4215

(b)  Derivatives transactions (other than options)
Product name   Long/Short    Number of     Price per
                             Securities    unit
CFD            Short         4045          53.5512
CFD            Short         4268          53.9885
CFD            Short         1600          54.0048
CFD            Short         20806         54.0391
CFD            Short         25511         54.2625
CFD            Short         2500          54.3118
CFD            Short         1866          54.3393
CFD            Short         200           54.365
CFD            Short         41365         54.5605
CFD            Short         120795        54.6118
CFD            Long          177           53.58
CFD            Long          9672          54.1914
CFD            Long          4567          54.2229
CFD            Long          3936          54.4215
CFD            Long          305           54.4607
CFD            Long          41502         54.6059
CFD            Long          1110          54.6911
CFD            Long          12401         54.9035

(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)
PUT         Selling           350            52      Euro      21/12/07        2.59

(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                         14 November 2007
Contact name                               BARCLAYS COMPLIANCE
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)

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