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               13 June 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      47,171,908      4.73%       583,528      0.06%
securities
(2) Derivatives    2,844,076      0.28%       240,584      0.02%
(other than
options)
(3) Options and      101,961      0.01%       341,580      0.03%
agreements to
purchase/sell
Total             50,117,945      5.02%     1,165,692      0.12%


(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           4,509               59.16
Purchase           5,546               57.7534
Purchase           16,154              58.4229
Purchase           1,772               57.623
Purchase           143                 57.83
Purchase           100,000             58.5121
Purchase           1,300               58.5297
Purchase           3,700               58.3297
Purchase           34,484              57.7882
Purchase           172                 58.11
Purchase           90,000              57.8866
Purchase           133                 57.9697
Purchase           85                  57.824
Purchase           691                 59.16
Purchase           237                 56.1218
Purchase           19,600              56
Purchase           143                 57.86
Purchase           53                  57.6187
Purchase           1,428               57.9697
Sale               237                 57.7
Sale               369                 58.01
Sale               100                 59.12
Sale               132                 58.05
Sale               194                 59
Sale               42                  59.11
Sale               90,000              57.8866
Sale               537                 58.13
Sale               495                 57.98
Sale               209                 58.1
Sale               384                 57.82
Sale               145                 57.626
Sale               145                 59
Sale               81                  59
Sale               100                 58.06
Sale               166                 58
Sale               634                 58
Sale               280                 59.12
Sale               240                 58.85
Sale               1,000               57.98
Sale               1,000               58.01
Sale               792                 58.85
Sale               240                 59.12
Sale               100                 58.85
Sale               425                 58.06
Sale               300                 58
Sale               100                 59.12
Sale               100                 58
Sale               325                 58
Sale               400                 58.08
Sale               729                 59.09
Sale               268                 58.93
Sale               516                 58.13
Sale               100                 59
Sale               136                 58.95
Sale               902                 58.01
Sale               241                 59.12
Sale               315                 58.12
Sale               100                 59.11
Sale               338                 58.13
Sale               171                 58.78
Sale               808                 58
Sale               451                 58.04
Sale               156                 57.77
Sale               541                 59.11
Sale               471                 59.11
Sale               1,000               59.1
Sale               471                 58.13
Sale               9                   58.01
Sale               688                 59.12
Sale               400                 59.11
Sale               856                 58.85
Sale               889                 59.12
Sale               198                 58.05
Sale               509                 59.11
Sale               138                 58.07
Sale               555                 59.04
Sale               666                 58.95
Sale               150                 58.06
Sale               38                  57.77
Sale               1,000               58.95
Sale               732                 58.04
Sale               685                 58
Sale               829                 58
Sale               255                 59.08
Sale               24                  57.86
Sale               434                 58.01
Sale               84                  58
Sale               408                 58
Sale               240                 59.12
Sale               165                 58.97
Sale               150                 58.09
Sale               960                 58.2
Sale               1,000               58.01
Sale               1,000               58.01
Sale               559                 57.8
Sale               195                 58.91
Sale               968                 58.85
Sale               103                 57.77
Sale               568                 59.1
Sale               50                  59
Sale               214                 59.03
Sale               420                 58.04
Sale               12,626              57.7055
Sale               223                 57.82
Sale               795                 59.1
Sale               71,829              57.6076
Sale               573                 58.1
Sale               1,000               59.1
Sale               345                 58
Sale               1,000               58.03
Sale               843                 58.01
Sale               1,000               58.01
Sale               50                  58.09
Sale               14                  58.06
Sale               261                 59.1
Sale               24,773              58.3002
Sale               889                 59.12
Sale               1,000               59
Sale               234                 58
Sale               457                 58.93
Sale               475                 59.11
Sale               84                  59.16
Sale               392                 59.09
Sale               684                 58.05
Sale               640                 59.07
Sale               786                 59.03
Sale               4,459               58.0476
Sale               400                 58.09
Sale               59                  59.11
Sale               237                 56.1218
Sale               950                 59.05
Sale               56                  58.05
Sale               182                 58.13
Sale               452                 58.13
Sale               49                  59
Sale               355                 59
Sale               22,109              57.8011
Sale               5,402               57.5075
Sale               100                 58
Sale               69                  58.99
Sale               69                  59.11
Sale               100                 58
Sale               171                 58
Sale               57                  59.11
Sale               354                 58.08
Sale               1,000               58.01
Sale               444                 58.2
Sale               316                 58.01
Sale               535                 58.03
Sale               646                 59.12
Sale               680                 58.84
Sale               968                 57.98
Sale               240                 58.85
Sale               111                 59.11
Sale               150                 58
Sale               1,000               59.04
Sale               729                 59.09
Sale               161                 59
Sale               50                  59.05
Sale               417                 58.03
Sale               400                 59.1
Sale               223                 58.03
Sale               488                 59.12
Sale               130                 57.82
Sale               178                 57.82
Sale               157                 58.01
Sale               400                 58.05
Sale               1,000               58.01
Sale               100                 59.12
Sale               58                  59.12
Sale               1,000               59.05
Sale               51                  57.82
Sale               188                 58.99
Sale               111                 59.1
Sale               283                 58.05
Sale               189                 58.92
Sale               968                 58
Sale               1,000               58.03
Sale               195                 58.08
Sale               223                 58
Sale               200                 58.02
Sale               119                 59.1
Sale               968                 58
Sale               354                 57.91
Sale               200                 58.09
Sale               1,000               58.01
Sale               162                 59
Sale               200                 58.03
Sale               116                 58.95
Sale               371                 58
Sale               100                 57.3315
Sale               533                 58.1
Sale               311                 58.13
Sale               104                 59.12
Sale               180                 58.04
Sale               100                 58
Sale               400                 58.78
Sale               320                 58.84
Sale               50                  57.806
Sale               1,000               58
Sale               50                  57.353
Sale               150                 57.7415
Sale               130                 57.6045
Sale               8,284               57.3009
Sale               0                   59.4174
Sale               720                 59.16
Sale               691                 59.16
Sale               24                  57.77
Sale               98                  58.01
Sale               159                 58
Sale               152                 57.87
Sale               314                 57.98
Sale               863                 59.05
Sale               49                  58.78
Sale               196                 57.82
Sale               482                 57.8
Sale               1,000               58.01
Sale               133                 59.12
Sale               400                 58.04
Sale               7                   58.13
Sale               225                 58.14
Sale               22                  58
Sale               10                  59.05
Sale               855                 59
Sale               242                 58.03
Sale               294                 59.1
Sale               215                 58.84
Sale               1,000               59.05
Sale               7                   58.13
Sale               355                 58.13
Sale               322                 59.03
Sale               990                 59.05
Sale               300                 58.01
Sale               517                 57.91
Sale               1,000               58.03
Sale               1,000               58.99
Sale               782                 58.99
Sale               188                 59.1
Sale               1,000               59.05
Sale               511                 58.92
Sale               106                 59
Sale               266                 59
Sale               138                 58
Sale               100                 58.01
Sale               673                 59.1
Sale               191                 58
Sale               100                 58.02
Sale               125                 58.08
Sale               38                  57.77
Sale               53                  59.1
Sale               88                  58.11
Sale               99                  59.09
Sale               172                 58
Sale               34                  58.1
Sale               637                 59.08
Sale               33,389              58.4781
Sale               600                 59
Sale               100                 58.05
Sale               434                 58
Sale               96                  58.04
Sale               102                 59
Sale               143                 57.86
Sale               100                 58.05
Sale               176                 58.85
Sale               186                 58.13
Sale               111                 59.12
Sale               180                 59
Sale               537                 58.13
Sale               340                 Transfer
Sale               785                 58.85
Sale               146                 59.1
Sale               1,000               59.05
Sale               46                  59.11
Sale               1,000               59.05
Sale               100                 58.95
Sale               645                 59.12
Sale               195                 59.1
Sale               950                 59
Sale               100                 58.01
Sale               40                  58.13
Sale               178                 57.75
Sale               4                   58.04
Sale               383                 59.12
Sale               54                  59.1
Sale               1,000               59.1
Sale               377                 59.09
Sale               319                 59
Sale               218                 58.95
Sale               100                 58.92
Sale               85                  58.12
Sale               788                 59
Sale               145                 58.08
Sale               1,000               59.05
Sale               335                 58.93
Sale               100                 58.05
Sale               745                 58
Sale               682                 57.87
Sale               250                 58.07

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          5402          57.5074
CFD            Long          1058          57.5484
CFD            Long          71829         57.6076
CFD            Long          22109         57.8011
CFD            Long          90000         57.8866
CFD            Long          4459          58.0476
CFD            Long          24773         58.3001
CFD            Long          33389         58.4781
CFD            Long          430           59.1719
CFD            Short         53            57.6186
CFD            Short         1772          57.623
CFD            Short         34484         57.7881
CFD            Short         90000         57.8866
CFD            Short         3700          58.3296
CFD            Short         16154         58.4229
CFD            Short         1300          58.5297

(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                         16 June 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   -135                   5,200.0000       EURO           19/12/2008
Option            Purchased   -100,000               30.0000          AMER           20/06/2008
Option            Purchased   -38,000                70.0000          AMER           20/06/2008
Option            Purchased   -10,000                74.0000          AMER           20/06/2008
Option            Purchased   -2,000                 70.0000          AMER           20/06/2008
Option            Purchased   -300                   3,800.0000       EURO           20/06/2008
Option            Purchased   -250                   2,500.0000       EURO           20/06/2008
Option            Purchased   -190,000               74.0000          AMER           20/06/2008
Option            Purchased   -145                   5,200.0000       EURO           19/12/2008
Option            Purchased   100,000                56.0000          AMER           18/12/2009
Option            Purchased   11                     7,600.0000       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                    3,800.0000       EURO           20/06/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   350                    4,600.0000       EURO           19/12/2008
Option            Purchased   -250                   5,200.0000       EURO           19/09/2008

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