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               14 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       47,607,842     4.77%    2,165,441      0.22%
securities
(2) Derivatives     4,624,464     0.46%    1,872,765      0.19%
(other than
options)
(3) Options and         3,206     0.00%      703,181      0.07%
agreements to
purchase/sell
Total              52,235,512     5.24%     4,741,387     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           Price per unit
                   Securities          (GBP)
Purchase           5,623               54.9103
Purchase           12,418               54.8811
Purchase           2,939               54.9115
Purchase           4,211               54.7900
Purchase           3,051               54.7900
Purchase           2,582               54.7900
Purchase           1,400               54.9050
Purchase           658                 54.9060
Purchase           8,204               54.9089
Purchase           60,000              54.8212
Purchase           4,094               54.7900
Purchase           4,945               54.9105
Purchase           2,969               54.7900
Purchase           2,166               54.7900
Purchase           458                 54.5400
Purchase           4,724               54.7900
Purchase           5,022               54.7900
Purchase           668                 55.2700
Purchase           6,876               54.9090
Purchase           8,403               55.3662
Purchase           46,480              54.8810
Purchase           945                 54.7900
Purchase           11,731              54.9430
Purchase           32,032              54.8811
Purchase           3,804               54.7900
Purchase           2,378               54.9110
Purchase           1,518               54.9121
Purchase           6,675               54.9093
Purchase           1,397               54.8810
Purchase           396                 54.7900
Purchase           22,782              55.0459
Purchase           1,359               54.9114
Purchase           60                  55.3583
Purchase           6,182               54.9099
Purchase           7,713               54.9090
Purchase           9,376               54.9090
Purchase           633                 54.8811
Purchase           5,743               54.7900
Purchase           3,717               54.9903
Purchase           1,823               54.7900
Purchase           7,787               54.7900
Purchase           3,503               54.9108
Purchase           4,128               54.9109
Purchase           2,553               54.7900
Purchase           60,000              54.8212
Purchase           3,468               54.7900
Purchase           483                 55.2878
Purchase           1,004               54.9972
Purchase           4,576               54.7900
Purchase           4,806               54.9106
Purchase           4,171               54.9110
Purchase           12,702              54.9092
Purchase           7,473               54.9090
Purchase           633                 54.8810
Purchase           842                 54.7900
Purchase           1,397               54.8811
Purchase           1,471               54.7900
Purchase           3,527               54.9734
Purchase           1,800               55.5992
Purchase           32,032              54.8810
Sale               26,794              53.9000
Sale               633                 54.8810
Sale               2,560               55.1537
Sale               150                 54.9625
Sale               200                 55.0620
Sale               60                  55.3675
Sale               100                 55.0400
Sale               1,000               54.8383
Sale               200                 55.0400
Sale               200                 54.9545
Sale               100                 55.3675
Sale               200                 55.0400
Sale               60,000              54.8212
Sale               50                  55.0400
Sale               385                 55.1658
Sale               50                  55.0400
Sale               46                  54.3725
Sale               1,397               54.8810
Sale               11,330              55.0168
Sale               80                  55.0400
Sale               32,032              54.8810
Sale               668                 55.2700
Sale               30                  55.1883
Sale               34,567              55.1722
Sale               27,601              55.0979
Sale               3,717               54.9903
Sale               365                 54.6513
Sale               57                  55.2058
Sale               28                  53.7600
Sale               185                 55.4845
Sale               506                 Transfer
Sale               160                 54.6383
Sale               3,717               54.9903
Sale               111                 55.0400
Sale               100                 55.0400
Sale               50                  55.0400
Sale               200                 55.3675
Sale               50                  55.0400
Sale               75                  55.0400
Sale               60                  55.0400
Sale               50                  55.3758
Sale               62                  Transfer
Sale               6,541               54.9716
Sale               50                  55.4146
Sale               75                  55.0400
Sale               100                 55.0400
Sale               63                  55.0795
Sale               62                  55.0795
Sale               200                 55.1558
Sale               200                 55.1645
Sale               1,400               55.1321
Sale               250                 54.8633
Sale               50                  55.2826
Sale               100                 55.0400
Sale               12,418              54.8810
Sale               185                 54.8970
Sale               125                 55.0400
Sale               75                  55.3675
Sale               220                 54.9825
Sale               200                 55.0800
Sale               668                 55.2700
Sale               100                 55.0400
Sale               70                  54.7746
Sale               150                 55.0400


(b)  Derivatives transactions (other than options)
Product name   Long/Short    Number of     Price per
                             Securities    unit
CFD            Short         60000         54.8211
CFD            Short         1400          54.905
CFD            Short         11731         54.9429
CFD            Short         3527          54.9734
CFD            Short         3717          54.9904
CFD            Short         1004          54.9972
CFD            Short         22782         55.0459
CFD            Short         60            55.3583
CFD            Short         8403          55.3661
CFD            Short         1800          55.5992
CFD            Long          365           54.6512
CFD            Long          6541          54.9715
CFD            Long          3717          54.9903
CFD            Long          11330         55.0168
CFD            Long          27601         55.0979
CFD            Long          1400          55.1321
CFD            Long          2560          55.1536
CFD            Long          34567         55.1721

(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                         15 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