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               26 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      44,498,177      4.46%     1,098,930      0.11%
securities
(2) Derivatives      883,944      0.09%       110,990      0.01%
(other than
options)
(3) Options and      101,200      0.01%         1,030      0.00%
agreements to
purchase/sell
Total             45,483,321      4.56%     1,210,950      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         2,000                 57.5235
Purchase         116,436               57.6402
Purchase         34                    72.8000 EUR
Purchase         400                   57.2086
Purchase         1,629                 57.0100
Purchase         223                   57.4700
Purchase         297                   57.4700
Purchase         198                   57.4700
Purchase         503                   57.6263
Purchase         175                   57.4040
Purchase         868                   57.0100
Purchase         1,817                 57.0100
Purchase         8,483                 57.5978
Purchase         50                    57.8588
Purchase         20,425                57.7159
Purchase         309                   57.4700
Purchase         130                   57.8864
Purchase         10,622                57.0100
Purchase         168                   57.3417
Purchase         117                   57.0100
Purchase         40,000                56.9885
Purchase         50,336                58.4369
Purchase         8,985                 58.2359
Purchase         5,027                 57.4476
Purchase         113                   58.6200
Purchase         921                   57.0100
Purchase         12                    58.4455
Purchase         9,668                 57.4588
Purchase         47,037                58.3740
Sale             100                   57.9500
Sale             160                   57.5000
Sale             450                   57.9000
Sale             200                   56.9532
Sale             50                    57.9008
Sale             700                   57.0906
Sale             265                   57.6200
Sale             200                   57.2500
Sale             40,000                56.9885
Sale             47,037                58.3740
Sale             28                    57.7160
Sale             40,000                56.9885
Sale             10,000                57.0100
Sale             57                    Transfer
Sale             15,658                57.0222
Sale             2,369                 57.3711
Sale             5,524                 57.7080
Sale             37,067                57.3978
Sale             5,895                 57.2288
Sale             5,272                 57.3133
Sale             50                    57.5100
Sale             402                   57.3133
Sale             491                   57.0100
Sale             883                   57.0100
Sale             189                   57.0100
Sale             192                   57.0100
Sale             200                   57.3133
Sale             190                   57.0100
Sale             50                    72.5400 EUR
Sale             684                   57.3133
Sale             117                   58.0300
Sale             921                   57.0100
Sale             2,584                 57.0100
Sale             388                   57.0100
Sale             338                   57.0100
Sale             1,552                 57.0100
Sale             55                    57.0933
Sale             50                    57.4232
Sale             616                   57.0100
Sale             250                   57.4530
Sale             1,473                 57.0100
Sale             23                    57.5500
Sale             70                    57.4446
Sale             287                   57.0100
Sale             160                   57.4028
Sale             100                   57.4330
Sale             60                    57.4540
Sale             180                   57.8312
Sale             25                    57.5200
Sale             75                    58.1331
Sale             150                   58.2915
Sale             47,037                58.3740
Sale             87                    57.0100

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          40000         56.9884
CFD            Long          15658         57.0222
CFD            Long          700           57.0906
CFD            Long          5895          57.2288
CFD            Long          1366          57.3589
CFD            Long          2369          57.371
CFD            Long          37067         57.3977
CFD            Long          5524          57.708
CFD            Long          100           58.1479
CFD            Short         198           56.9986
CFD            Short         400           57.2085
CFD            Short         5156          57.397
CFD            Short         4354          57.3972
CFD            Short         3946          57.3978
CFD            Short         5027          57.4476
CFD            Short         9668          57.4587
CFD            Short         2000          57.5235
CFD            Short         8483          57.5977
CFD            Short         116436        57.6402
CFD            Short         20425         57.7159
CFD            Short         3607          57.8932
CFD            Short         8985          58.2358
CFD            Short         50336         58.4368

(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                         27 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   100,000                56.0000          AMER           18/12/2009
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   -135                   5,200.0000       EURO           19/12/2008
Option            Purchased   -145                   5,200.0000       EURO           19/12/2008
Option            Purchased   -250                   5,200.0000       EURO           19/09/2008
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