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               13 November 2008

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      47,914,808     4.80%      1,326,611     0.13%
securities
(2) Derivatives      937,854     0.09%      1,662,510     0.17%
(other than
options)
(3) Options and      101,200     0.01%        276,959     0.03%
agreements to
purchase/sell
Total             48,953,862     4.90%      3,266,080     0.33%

(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         350                   24.8329
Purchase         27,388                24.9244
Purchase         628                   Transfer
Purchase         7,700                 25.0705
Purchase         869                   25.3831
Purchase         13,529                25.7000
Purchase         6,300                 25.0455
Purchase         2,496                 Transfer
Purchase         78,093                25.7000
Purchase         30,676                24.9696
Purchase         1,412                 25.0299
Purchase         21,300                25.0705
Purchase         200                   24.8400
Purchase         5,300                 24.9106
Purchase         4,592                 25.0488
Purchase         32                    25.2300
Purchase         40,591                24.9679
Purchase         53,508                25.1360
Purchase         26,025                25.1116
Purchase         712                   25.7000
Purchase         900                   24.9800
Purchase         125                   24.7200
Purchase         4,115                 25.7000
Purchase         526                   25.7000
Purchase         15,801                25.7000
Purchase         381                   25.7000
Purchase         425                   24.9835
Purchase         1,131                 25.7000
Purchase         21,398                24.7147
Purchase         115                   24.7700
Purchase         41,150                25.7000
Sale             286                   Transfer
Sale             628                   Transfer
Sale             467                   24.7868
Sale             286                   Transfer
Sale             40,303                25.0068
Sale             200                   24.8400
Sale             398                   25.2000
Sale             850                   25.7000
Sale             186,668               24.9383
Sale             35                    Transfer
Sale             23,089                24.6753
Sale             257                   25.7000
Sale             26,796                24.9602
Sale             1,859                 25.7000
Sale             5,421                 25.7000
Sale             154                   Transfer
Sale             7,604                 24.6962
Sale             350                   24.8371
Sale             15,509                25.4097
Sale             480                   24.6500
Sale             870                   24.9871
Sale             55                    24.8000
Sale             6,600                 24.7344
Sale             166                   Transfer
Sale             220                   Transfer
Sale             55                    26.0130
Sale             45,824                25.2339
Sale             435                   25.7000

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          23089         24.6752
CFD            Long          7604          24.6961
CFD            Long          6600          24.7344
CFD            Long          467           24.7868
CFD            Long          200           24.84
CFD            Long          186668        24.9382
CFD            Long          26796         24.9602
CFD            Long          40303         25.0068
CFD            Long          14630         25.0387
CFD            Long          45824         25.2338
CFD            Long          15509         25.4096
CFD            Short         200           24.84
CFD            Short         5300          24.9105
CFD            Short         27388         24.9243
CFD            Short         40591         24.9678
CFD            Short         30676         24.9696
CFD            Short         1412          25.0299
CFD            Short         6300          25.0455
CFD            Short         4592          25.0488
CFD            Short         26025         25.1115
CFD            Short         53508         25.1359

(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                         14 November 2008
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   100,000                56.0000          AMER           18/12/2009
Option            Purchased   -50,000                64.0000          AMER           21/11/2008
Option            Purchased   -100,000               64.0000          AMER           21/11/2008
Option            Purchased   -125,000               45.0000          AMER           20/03/2009
Option            Purchased   500                    5,000.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   -94                    5,200.0000       EURO           19/12/2008
Option            Purchased   -145                   5,200.0000       EURO           19/12/2008
Option            Purchased   -270                   6,400.0000       EURO           19/12/2008
Option            Purchased   -300                   4,400.0000       EURO           19/12/2008
Option            Purchased   -300                   4,400.0000       EURO           19/12/2008
Option            Purchased   -350                   5,000.0000       EURO           19/12/2008
Option            Purchased   -500                   7,000.0000       EURO           19/12/2008

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