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               19 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      49,418,219     4.95%      1,133,707     0.11%
securities
(2) Derivatives      747,785     0.07%      1,799,435     0.18%
(other than
options)
(3) Options and      101,200     0.01%        276,959     0.03%
agreements to
purchase/sell
Total             50,267,204     5.04%      3,209,972     0.32%

(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         183                   23.5300
Purchase         36,388                22.5700
Purchase         250                   23.2500
Purchase         1,000                 23.5400
Purchase         3,190                 22.5700
Purchase         435                   22.5700
Purchase         75                    27.1300 EUR
Purchase         8,935                 23.8593
Purchase         602,333               24.6800
Purchase         896                   22.5700
Purchase         470                   22.5700
Purchase         70                    23.6200
Purchase         1,200                 24.0615
Purchase         15,222                23.6971
Purchase         2,800                 23.8596
Purchase         1,405                 23.3386
Purchase         1,100                 23.9655
Purchase         600                   23.8058
Purchase         6,351                 23.6007
Purchase         500                   23.7120
Purchase         10,653                23.6987
Purchase         52,000                52.0000
Purchase         2,156                 23.7061
Purchase         1,906                 23.8244
Purchase         77,000                44.0000
Purchase         96,006                23.1568
Sale             6,991                 23.9267
Sale             10,913                22.5700
Sale             6,268                 23.6564
Sale             7,486                 23.3515
Sale             104                   23.7840
Sale             2,069                 23.2959
Sale             1,909                 23.2584
Sale             100                   23.9200
Sale             200                   23.8500
Sale             644                   23.8461
Sale             8,066                 24.3445
Sale             8,033                 23.5563
Sale             24,350                22.5700
Sale             41,274                24.2950
Sale             424                   22.5700
Sale             500                   23.7120
Sale             600                   23.8200
Sale             3,255                 23.8842
Sale             6,500                 22.5700
Sale             15,300                23.8422
Sale             9,227                 23.7177
Sale             27,863                23.4864
Sale             903                   23.8461

(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            1909            23.2584
CFD            Long            2069            23.2959
CFD            Long            7486            23.3514
CFD            Long            27863           23.4864
CFD            Long            8033            23.5563
CFD            Long            3003            23.6511
CFD            Long            3228            23.6512
CFD            Long            6268            23.6563
CFD            Long            500             23.712
CFD            Long            9227            23.7176
CFD            Long            2835            23.8053
CFD            Long            15300           23.8422
CFD            Long            3255            23.8841
CFD            Long            6991            23.9266
CFD            Long            41274           24.295
CFD            Short           96006           23.1568
CFD            Short           1405            23.3386
CFD            Short           183             23.53
CFD            Short           6351            23.6007
CFD            Short           5193            23.6891
CFD            Short           10653           23.6987
CFD            Short           2156            23.706
CFD            Short           500             23.712
CFD            Short           8174            23.8189
CFD            Short           2800            23.8596
CFD            Short           1100            23.9654
CFD            Short           1200            24.0615

(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           52                 52        EURO          19/12/2008    0.00
Put             Selling           77                 44        EURO          19/12/2008    0.00

(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                         20 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   -42                    5,200.0000       EURO           19/12/2008
Option            Purchased   -145                   5,200.0000       EURO           19/12/2008
Option            Purchased   -223                   4,400.0000       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   -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