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               22 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      47,082,623      4.72%    2,632,597       0.26%
securities
(2) Derivatives    5,047,022      0.51%    2,216,563       0.22%
(other than
options)
(3) Options and        3,481      0.00%      703,231       0.07%
agreements to
purchase/sell
Total             52,133,126      5.23%    5,552,391       0.56%


(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      55,468               49.1435
Purchase      50                   Transfer
Purchase      600                  49.4974
Purchase      23,263               49.3625
Purchase      12,564               48.9083
Purchase      122,500              48.8200
Purchase      1,400                49.3695
Purchase      483                  49.0726
Purchase      27                   Transfer
Purchase      4,817                49.0703
Purchase      22,191               49.0297
Purchase      25,713               49.2500
Purchase      1,400                49.3695
Sale          100                  49.5050
Sale          107,250              49.3400
Sale          72                   49.9750
Sale          20,381               51.6300
Sale          234                  49.4500
Sale          70                   49.4100
Sale          80                   49.2650
Sale          164                  49.4500
Sale          1,144                50.0052
Sale          254                  49.4500
Sale          450                  48.7875
Sale          100                  49.5387
Sale          150                  49.8500
Sale          221                  49.4500
Sale          27                   Transfer
Sale          72,552               48.9363
Sale          80                   49.2650
Sale          190                  49.4500
Sale          12,564               48.9083
Sale          482                  4.9336
Sale          150                  49.4212
Sale          248                  49.4500
Sale          58                   50.1775
Sale          80                   49.4100
Sale          8                    50.1950
Sale          700                  48.8150
Sale          246                  49.4500
Sale          60                   49.5225
Sale          1,360                48.8091
Sale          166                  49.4500
Sale          80                   49.4100
Sale          70                   49.3926
Sale          700                  48.8150
Sale          1,400                49.3695
Sale          247                  49.4500
Sale          4,046                49.3885
Sale          12,564               48.9083
Sale          399                  Transfer
Sale          50                   Transfer
Sale          69                   50.1275
Sale          89                   49.8550


(b)  Derivatives transactions (other than options)
Product name, Long/Short           Number of      Price per
(e.g. CFD)    (Note 6)             Securities     unit (GBP)
CFD           Short                800            48.8574
CFD           Short                22191          49.0296
CFD           Short                4017           49.1127
CFD           Short                23263          49.3624
CFD           Short                1400           49.3695
CFD           Short                600            49.4974
CFD           Long                 482            4.9335
CFD           Long                 1360           48.8091
CFD           Long                 12564          48.9082
CFD           Long                 72552          48.9362
CFD           Long                 4046           49.3884

(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            Selling           250                52        EURO             20/03/2008 4.30
Put             Selling           275                48        EURO             21/12/2007 2.30

(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                         23 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   250                    3,000.0000       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   -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                    3,300.0000       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   125                    4,400.0000       EURO           20/06/2008

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