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               14 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      48,325,043     4.84%      1,269,635     0.13%
securities
(2) Derivatives      880,878     0.09%      1,696,086     0.17%
(other than
options)
(3) Options and      101,200     0.01%        276,959     0.03%
agreements to
purchase/sell
Total             49,307,121     4.94%      3,242,680     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         34,279                26.3388
Purchase         12,748                25.6200
Purchase         22,313                25.6200
Purchase         1,138                 25.6200
Purchase         18,561                26.6180
Purchase         106,990               25.6200
Purchase         70,813                26.8650
Purchase         2,252                 27.3500
Purchase         52,928                25.6200
Purchase         1,843                 25.7711
Purchase         200                   27.1150
Purchase         138                   26.6544
Purchase         11,858                26.7204
Purchase         3,831                 26.7871
Purchase         9,400                 26.9523
Purchase         44,533                26.8961
Purchase         5,000                 25.6432
Purchase         801                   26.7200
Purchase         424                   25.6200
Purchase         2,100                 25.6073
Purchase         10,536                26.2851
Purchase         13,400                25.6200
Purchase         859                   25.6200
Purchase         13,525                25.0798
Purchase         5,720                 25.6200
Purchase         9,902                 26.2851
Purchase         3,400                 26.2851
Purchase         27,238                27.3583
Purchase         13,400                27.3500
Purchase         10,416                25.6200
Purchase         61,176                25.7000
Purchase         29,199                25.6200
Sale             865                   26.9832
Sale             1,843                 27.2180
Sale             2,212                 26.9832
Sale             92                    26.9832
Sale             33,075                25.6200
Sale             2,746                 26.9832
Sale             1,278                 26.7286
Sale             23,911                26.0178
Sale             676                   26.9832
Sale             1,255                 26.9832
Sale             5,000                 27.5405
Sale             11,402                26.7929
Sale             941                   26.9832
Sale             2,195                 26.9832
Sale             2,675                 26.9832
Sale             42                    26.7020
Sale             3,241                 26.9832
Sale             177                   26.9832
Sale             150                   27.4930
Sale             13,400                25.6200
Sale             207                   25.7400
Sale             15,500                26.1710
Sale             64                    26.6010
Sale             1,552                 26.9832
Sale             1,332                 26.9832
Sale             335                   26.9832
Sale             19,350                26.6268
Sale             2,358                 26.9832
Sale             200                   27.1150
Sale             5,702                 26.0223
Sale             3,831                 26.7879
Sale             30,923                26.8915

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          23911         26.0178
CFD            Long          5702          26.0222
CFD            Long          15500         26.1709
CFD            Long          372           26.2752
CFD            Long          19350         26.6267
CFD            Long          11402         26.7929
CFD            Long          5235          26.8558
CFD            Long          30923         26.8914
CFD            Long          200           27.115
CFD            Long          1843          27.218
CFD            Long          5000          27.5404
CFD            Short         2100          25.6073
CFD            Short         5000          25.6432
CFD            Short         1843          25.771
CFD            Short         2891          26.0559
CFD            Short         34279         26.3388
CFD            Short         18561         26.6179
CFD            Short         138           26.6544
CFD            Short         11858         26.7204
CFD            Short         5244          26.8241
CFD            Short         3130          26.8618
CFD            Short         70813         26.865
CFD            Short         44533         26.8961
CFD            Short         9400          26.9523
CFD            Short         200           27.115

(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                         17 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