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               25 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      49,160,182     4.92%      1,291,706     0.13%
securities
(2) Derivatives      923,498     0.09%      1,292,821     0.13%
(other than
options)
(3) Options and      351,200     0.04%        127,078     0.01%
agreements to
purchase/sell
Total             50,434,880     5.05%      2,711,605     0.27%

(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           Price per unit
                   Securities          (GBP)
Purchase           100                 15.8
Purchase           300                 15.67
Purchase           12                  15.5
Purchase           314                 15.5
Purchase           1,286               15.5
Purchase           292                 16.81
Purchase           109                 16.87
Purchase           200                 15.4
Purchase           125                 16.87
Purchase           150                 15.4
Purchase           195,474             15.5
Purchase           200                 16.87
Purchase           1,000               15.9
Purchase           205                 15.8
Purchase           150                 15.8
Purchase           110                 16.87
Purchase           200                 15.67
Purchase           120                 15.8
Purchase           70                  15.8
Purchase           120                 15.8
Purchase           200                 15.8
Purchase           150                 15.8
Purchase           150                 15.4
Purchase           200                 16.88
Purchase           200                 15.8
Purchase           150                 15.8
Purchase           150                 15.8
Purchase           174                 15.5
Purchase           7                   15.5
Purchase           120                 15.8
Purchase           300                 15.61
Purchase           250                 16.5
Purchase           200                 15.67
Purchase           195                 15.02
Purchase           200                 15.67
Purchase           150                 15.8
Purchase           250                 15.67
Purchase           150                 16.49
Purchase           200                 15.8
Purchase           2,852               15.5
Purchase           107                 15.5
Purchase           230                 16.49
Purchase           195                 15.03
Purchase           416                 15.5
Purchase           11,049              15.5
Purchase           229                 15.5
Purchase           1,000               15.2
Purchase           200                 15.8
Purchase           240                 16.49
Purchase           200                 16.49
Purchase           500                 15.8
Purchase           1,707               15.5
Purchase           300,000             16.2741
Purchase           165                 24.5
Purchase           406                 Transfer
Purchase           41,398              15.75
Purchase           233                 16.81
Purchase           93,672              15.9576
Purchase           200                 15.8
Purchase           25,320              15.2935
Purchase           213,879             15.5888
Purchase           1,100               15.9
Purchase           3,200               15.8445
Purchase           160,000             14.2244
Purchase           260,052             16.1519
Purchase           5,714               16.1143
Purchase           85,252              15.4037
Purchase           10,000              15.5927
Purchase           13,200              15.966
Purchase           120                 15.8
Purchase           200                 15.67
Purchase           500                 15.71
Purchase           250                 15.8
Purchase           500                 15.8
Purchase           370                 15.3
Purchase           231                 16.81
Purchase           450                 15.67
Purchase           240                 16.49
Purchase           150                 15.8
Purchase           150                 15.8
Purchase           120                 15.8
Purchase           300                 15.8
Purchase           120                 15.8
Purchase           150                 15.8
Purchase           285                 15.8
Purchase           250                 15.8
Purchase           120                 15.8
Purchase           250                 15.8
Purchase           300                 15.8
Purchase           200                 15.8
Purchase           1,000               15.8
Purchase           200                 16.03
Purchase           250                 15.8
Purchase           120                 15.8
Purchase           250                 15.79
Purchase           225                 16
Purchase           150                 15.4
Purchase           250                 15.8
Purchase           120                 15.8
Purchase           290                 16.81
Purchase           449                 15.5
Purchase           110                 15.4
Purchase           232                 16.81
Purchase           144                 16.81
Purchase           240                 16.49
Purchase           117                 16.81
Purchase           600                 16.87
Purchase           75                  15.8
Purchase           1,500               14.72
Purchase           150                 15.8
Purchase           1,000               15.21
Purchase           200                 15.8
Purchase           1,250               15.9
Purchase           300                 15.8
Purchase           330                 14.92
Purchase           50                  18.4000 EUR
Purchase           1,597               15.5
Purchase           612                 15.5
Purchase           848                 15.5
Purchase           21,025              15.5
Purchase           2,269               15.5
Purchase           353                 15.4946
Purchase           529                 15.4946
Purchase           581                 15.4946
Purchase           200                 15.64
Purchase           300                 18.3700 EUR
Purchase           200                 15.8
Purchase           110                 18.8300 EUR
Purchase           400                 17.8000 EUR
Purchase           150                 18.4800 EUR
Purchase           50                  18.7000 EUR
Purchase           55                  18.2000 EUR
Purchase           50                  19.0000 EUR
Purchase           750                 15.5
Purchase           1,350               16.05
Purchase           189                 15.8
Purchase           100                 23.9100 EUR
Purchase           297,866             16.7368
Purchase           551                 15.5
Purchase           16                  15.5
Purchase           437                 15.5
Purchase           913                 14.6912
Purchase           41,398              15.75
Purchase           26,430              15.8715
Purchase           21                  15.5
Purchase           150                 15.8
Purchase           147,500             16.1
Purchase           100                 16.82
Purchase           6,002               15.836
Purchase           73,000              16.2101
Purchase           279,936             15.871
Purchase           1,205               15.64
Purchase           150                 16.49
Purchase           120                 16.49
Purchase           74,380              15.5541
Purchase           150                 16.49
Purchase           188,379             16.823
Purchase           11,154              15.5
Purchase           7,095               15.5
Purchase           250                 15.67
Purchase           200                 15.8
Purchase           120                 16.56
Purchase           352,805             15.7501
Sale               1,597               15.5
Sale               18,745              15.3124
Sale               348                 15.5
Sale               271,227             15.5823
Sale               299,171             15.9069
Sale               352,805             15.7501
Sale               160,000             14.2244
Sale               85,252              15.4094
Sale               21,641              23.12
Sale               110                 15.5054
Sale               18,505              15.8072
Sale               6,527               15.5
Sale               300,000             16.2741
Sale               6,518               23.12
Sale               6,342               15.6348
Sale               18,016              15.5
Sale               900                 16.6445
Sale               2,700               15.5
Sale               62,256              15.3124
Sale               160,000             14.2244
Sale               11,154              15.5
Sale               2,589               15.85
Sale               24,130              15.3124
Sale               78,176              15.8128
Sale               271                 15.5
Sale               1,220               15.5
Sale               3,400               20.75
Sale               10,536              20.75
Sale               9,902               20.75
Sale               8,388               23.12
Sale               195,474             15.5
Sale               300,000             16.2741
Sale               165                 24.5
Sale               1,100               15.9
Sale               594,722             15.3679
Sale               740                 Transfer
Sale               1,543               15.5054
Sale               400                 18.8900 EUR
Sale               187,768             16.1121
Sale               1,000               16.88
Sale               33,469              15.5
Sale               123,306             16.3749
Sale               1,424               15.5
Sale               79                  15.81
Sale               10,000              15.5624
Sale               500                 15.68
Sale               40                  24.314
Sale               6,454               15.5
Sale               75                  14.72


(b)  Derivatives transactions (other than options)
Product name,  Long/Short      Number of       Price per
(e.g. CFD)     (Note 6)        Securities      unit (GBP)
CFD            Long            160000          14.2243
CFD            Long            27347           14.5809
CFD            Long            2111            15.1121
CFD            Long            14086           15.1196
CFD            Long            23847           15.2212
CFD            Long            594722          15.3678
CFD            Long            326             15.535
CFD            Long            6342            15.6348
CFD            Long            537259          15.6982
CFD            Long            352805          15.75
CFD            Long            18505           15.8072
CFD            Long            78176           15.8128
CFD            Long            1100            15.9
CFD            Long            187768          16.112
CFD            Long            7544            16.1629
CFD            Long            300000          16.274
CFD            Long            123306          16.3748
CFD            Long            900             16.6445
CFD            Short           913             14.6912
CFD            Short           25320           15.2934
CFD            Short           74380           15.5541
CFD            Short           213879          15.5888
CFD            Short           352805          15.75
CFD            Short           6002            15.8359
CFD            Short           279936          15.871
CFD            Short           26430           15.8714
CFD            Short           1100            15.9
CFD            Short           93672           15.9575
CFD            Short           260052          16.1518
CFD            Short           297866          16.7367

(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           Selling           250                  16      EURO         19/12/2008       2.77
Put            Selling           250000               14      EURO         19/12/2008       1.10


(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 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   250,000                14.0000          AMER           19/12/2008
Option            Purchased   100,000                56.0000          AMER           18/12/2009
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   -221                   4,400.0000       EURO           19/12/2008
Option            Purchased   -250                   1,600.0000       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