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               23 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      46,983,617      4.71%    2,704,256       0.27%
securities
(2) Derivatives    5,112,700      0.51%     2,247,534      0.23%
(other than
options)
(3) Options and        3,606      0.00%       703,231      0.07%
agreements to
purchase/sell
Total             52,099,923      5.22%     5,655,021      0.57%


(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      252                  52.1500
Purchase      340                  53.1500
Purchase      988                  53.1500
Purchase      2,499                51.9050
Purchase      32,694               50.9865
Purchase      8,678                52.4529
Purchase      925                  50.5463
Purchase      378                  52.1378
Purchase      5,994                51.6089
Purchase      880                  51.0400
Purchase      2,499                51.9050
Purchase      2,162                51.8044
Purchase      13,800               52.4875
Sale          3,793                52.0528
Sale          8,667                52.0528
Sale          32,943               51.8042
Sale          925                  50.5463
Sale          380                  49.8715
Sale          1,000                50.9650
Sale          19,625               53.0119
Sale          75                   53.1625
Sale          586                  53.1710
Sale          2,162                51.8044
Sale          9,582                52.2371
Sale          32,694               52.5399
Sale          70                   52.1750
Sale          204                  53.1500
Sale          400                  52.0985
Sale          37,000               50.6000
Sale          100                  53.4100
Sale          200                  51.0225
Sale          208                  49.3850
Sale          75                   53.1625
Sale          2,162                51.8044
Sale          75                   50.6551
Sale          50                   52.9726
Sale          876                  Transfer
Sale          378                  50.9000
Sale          100                  52.0275
Sale          423                  53.1500
Sale          13,750               53.0000
Sale          93                   51.9375
Sale          2,499                51.9050


(b)  Derivatives transactions (other than options)
Product name, Long/Short           Number of      Price per
(e.g. CFD)    (Note 6)             Securities     unit (GBP)
CFD           Short                5994           51.6088
CFD           Short                2499           51.905
CFD           Short                8678           52.4529
CFD           Short                13800          52.4874
CFD           Long                 380            49.8714
CFD           Long                 32943          51.8042
CFD           Long                 2162           51.8043
CFD           Long                 400            52.0984
CFD           Long                 9582           52.2371
CFD           Long                 19625          53.0118
CFD           Long                 586            53.171

(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          25                 54         EURO        20/03/2008  5.70
CALL            Purchase         100                 56         EURO        18/01/2008  2.20
(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                         26 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   25                     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