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               07 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      48,362,856     4.83%        618,718     0.06%
securities
(2) Derivatives      789,961     0.08%      1,890,391     0.19%
(other than
options)
(3) Options and      101,200     0.01%       276,959      0.03%
agreements to
purchase/sell
Total             49,254,017     4.91%     2,786,068      0.28%

(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         8,000                 25.9687
Purchase         9,157                 26.1247
Purchase         2,488                 26.4051
Purchase         75,357                26.0766
Purchase         86,824                25.9435
Purchase         84,139                26.2238
Purchase         21,341                25.7034
Purchase         33,281                26.0288
Purchase         1,113                 26.1800
Purchase         37,773                25.9790
Purchase         26,786                25.9922
Purchase         10,700                25.9687
Purchase         850                   26.1800
Purchase         250                   26.2600
Purchase         1,218                 26.1800
Purchase         190                   26.1200
Purchase         20,870                26.1800
Purchase         9,087                 26.1800
Purchase         10,136                26.1800
Purchase         227                   26.1800
Purchase         100                   25.8500
Sale             34                    25.8730
Sale             34                    26.0320
Sale             57                    Transfer
Sale             34,073                26.1803
Sale             100                   25.8500
Sale             2,462                 26.3447
Sale             600                   26.6256
Sale             52,784                25.9860
Sale             33                    26.5000
Sale             124                   26.1800
Sale             40                    25.8210
Sale             41,718                26.0735
Sale             36                    25.4510
Sale             20,870                26.1800
Sale             100                   25.9040
Sale             125                   25.9040
Sale             125                   25.8000
Sale             19,223                26.1800
Sale             33,033                26.0180
Sale             173                   26.0300
Sale             10,345                26.1800
Sale             100                   26.0300
Sale             67                    Transfer
Sale             15,942                26.8771
Sale             25,874                26.0119
Sale             39                    25.7030
Sale             4,663                 26.1800
Sale             9,907                 25.8266
Sale             4,088                 26.1800

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          9907          25.8265
CFD            Long          100           25.85
CFD            Long          52784         25.986
CFD            Long          25874         26.0119
CFD            Long          33033         26.018
CFD            Long          4635          26.0285
CFD            Long          2462          26.3446
CFD            Long          600           26.6256
CFD            Long          15942         26.8771
CFD            Short         21341         25.7034
CFD            Short         2578          25.8442
CFD            Short         100           25.85
CFD            Short         4974          25.8925
CFD            Short         86824         25.9435
CFD            Short         37773         25.9789
CFD            Short         26786         25.9921
CFD            Short         33281         26.0287
CFD            Short         75357         26.0766
CFD            Short         9157          26.1247
CFD            Short         84139         26.2237
CFD            Short         6736          26.5889

(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                         10 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