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               16 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      46,372,448      4.65%    2,622,200       0.26%
securities
(2) Derivatives    4,777,159      0.48%    2,041,892       0.20%
(other than
options)
(3) Options and        3,206      0.00%      702,706       0.07%
agreements to
purchase/sell
Total             51,152,813      5.13%     5,366,798      0.54%


(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      32,000               54.8750
Purchase      24,589               54.3907
Purchase      14,729               54.1000
Purchase      8,002                55.3263
Purchase      11,521               55.2700
Purchase      42,083               54.3000
Purchase      1,753                53.8000
Purchase      8,417                54.8625
Purchase      273                  Transfer
Purchase      410                  53.5334
Purchase      86,003               54.2645
Purchase      14,016               53.8000
Purchase      1,300                54.6338
Purchase      80                   53.3380
Sale          29,573               54.0074
Sale          70                   54.2900
Sale          200                  55.0531
Sale          50                   54.9012
Sale          240                  54.1500
Sale          225,000              45.0000
Sale          83                   54.3000
Sale          1,750                54.3900
Sale          1,039                53.8000
Sale          125                  55.0937
Sale          14,499               53.8000
Sale          48,395               53.8000
Sale          250                  54.2312
Sale          12,418               54.2000
Sale          6,198                54.9296
Sale          4,001                54.9377
Sale          4,290                54.8900
Sale          137                  53.9250
Sale          109,417              54.2000
Sale          48,648               54.2000
Sale          185                  54.1912
Sale          342                  53.7827
Sale          75                   54.9012
Sale          9,065                54.7862
Sale          65                   55.0037
Sale          32,000               54.8750
Sale          7,099                54.2000
Sale          1,223                54.3833
Sale          3                    54.3375
Sale          32,032               54.2000
Sale          11,521               55.2700


Sale 250,000 42.0000(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         80            53.338
CFD            Short         410           53.5334
CFD            Short         470           54.133
CFD            Short         86003         54.2645
CFD            Short         24589         54.3906
CFD            Short         1300          54.6338
CFD            Short         8417          54.8624
CFD            Short         8002          55.3262
CFD            Long          29573         54.0074
CFD            Long          1223          54.3833
CFD            Long          9065          54.7862
CFD            Long          6198          54.9295
CFD            Long          4001          54.9376
CFD            Long          200           55.0531

(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                         19 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   350                     4,600.0000      EURO           19/12/2008
Option            Purchased   -300                    3,800.0000      EURO           20/06/2008
Option            Purchased   -250                    2,500.0000      EURO           20/06/2008
Option            Purchased   125                     4,400.0000      EURO           20/06/2008
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   -306                    4,200.0000      EURO           21/12/2007
Option            Purchased   306                     4,800.0000      EURO           21/12/2007
Option            Purchased   -350                    5,200.0000      EURO           21/12/2007
Option            Purchased   350                     4,600.0000      EURO           19/12/2008
Option            Purchased   450                     3,500.0000      EURO           21/12/2007
Option            Purchased   500                     5,200.0000      EURO           21/12/2007
Option            Purchased   -600,000                42.0000         AMER           21/12/2007
Option            Purchased   -1,000                  3,500.0000      EURO           21/12/2007
Option            Purchased   -500                    4,400.0000      EURO           21/12/2007
Option            Purchased   250                     4,500.0000      EURO           21/12/2007


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