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               28 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      46,608,169      4.67%     2,853,524      0.29%
securities
(2) Derivatives    5,427,644      0.54%     2,474,849      0.25%
(other than
options)
(3) Options and        3,631      0.00%       703,231      0.07%
agreements to
purchase/sell
Total             52,039,444      5.22%     6,031,604      0.60%


(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      3,360                52.6081
Purchase      300                  50.4972
Purchase      481                  54.0000
Purchase      6,434                51.2334
Purchase      400                  53.1296
Purchase      6,411                51.9423
Purchase      28,032               54.0000
Purchase      900                  50.6995
Purchase      1,905                51.0554
Purchase      22,070               51.0923
Purchase      1,905                51.0554
Purchase      11,090               52.7698
Purchase      900                  50.6995
Purchase      45,070               50.6082
Sale          79                   Transfer
Sale          203                  Transfer
Sale          1,611                54.0000
Sale          150                  53.2858
Sale          1,918                50.5923
Sale          2,704                53.0221
Sale          100                  53.5083
Sale          50                   52.0000
Sale          300                  52.3158
Sale          100                  52.4125
Sale          31,403               52.8510
Sale          50                   52.0000
Sale          200                  52.9134
Sale          900                  50.6995
Sale          6,411                51.9423
Sale          6,411                51.9423
Sale          200                  52.0020
Sale          400                  52.0020
Sale          1,905                51.0554
Sale          50                   Transfer
Sale          130                  51.7470
Sale          45,070               50.6082
Sale          2,700                Transfer
Sale          50                   51.5774
Sale          2,590                52.4945
Sale          1,876                53.7095
Sale          70,303               52.8761
Sale          6,403                53.6088
Sale          60                   51.1600
Sale          1,523                Transfer
Sale          2,520                54.0000
Sale          25,020               54.0000
Sale          150                  52.3125
Sale          100                  51.6775
Sale          65                   53.3545
Sale          190                  53.4245
Sale          150                  52.6050

(b)  Derivatives transactions (other than options)
Product name, Long/Short           Number of      Price per
(e.g. CFD)    (Note 6)             Securities     unit (GBP)
CFD           Short                900            50.6995
CFD           Short                1905           51.0554
CFD           Short                22070          51.0923
CFD           Short                6434           51.2334
CFD           Short                3360           52.608
CFD           Short                11090          52.7698
CFD           Short                400            53.1295
CFD           Long                 6411           51.9423
CFD           Long                 2590           52.4944
CFD           Long                 70303          52.8761
CFD           Long                 200            52.9134
CFD           Long                 2704           53.022
CFD           Long                 6403           53.6088
CFD           Long                 1876           53.7095

(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                         29 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