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 LIMITED
Class of relevant security    ORD GBP0.10
to which the dealings being
disclosed relate (Note 2)
Date of dealing               01 July 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      44,538,600      4.46%     1,070,891      0.11%
securities
(2) Derivatives      824,525      0.08%       111,904      0.01%
(other than
options)
(3) Options and      101,200      0.01%         1,030      0.00%
agreements to
purchase/sell
Total             45,464,325      4.56%     1,183,825      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      3,773                57.6472
Purchase      2,100                58.9198
Purchase      6,389                57.6400
Purchase      7,566                58.5991
Purchase      56,000               57.6406
Purchase      46,120               58.8009
Purchase      90,000               59.2709
Purchase      100,000              58.6746
Purchase      55,396               58.2797
Purchase      22,812               58.6190
Purchase      4,000                57.6400
Purchase      131                  59.9300
Purchase      5,998                57.6400
Purchase      10,900               59.3624
Purchase      700                  58.4282
Purchase      207                  59.1485
Purchase      50                   58.3384
Purchase      177                  58.5988
Purchase      200                  58.5200
Sale          10,298               58.7130
Sale          6,964                59.0993
Sale          2,743                58.3975
Sale          25,047               58.8827
Sale          85                   58.1245
Sale          49,993               58.8986
Sale          107                  60.4060
Sale          9,300                58.6222
Sale          9                    60.1130
Sale          90,000               59.2709
Sale          50                   58.2600
Sale          53                   57.9760
Sale          350                  59.7300
Sale          350                  59.7300
Sale          350                  59.7300
Sale          85                   59.0824
Sale          30                   58.6190
Sale          250                  58.5400
Sale          170                  58.3824
Sale          50                   58.1120
Sale          87                   59.9060
Sale          70                   58.2600
Sale          45                   58.3245
Sale          300                  59.7700
Sale          80                   58.2600
Sale          90                   58.5000
Sale          200                  58.2600
Sale          5,412                57.6400
Sale          38,277               58.5207
Sale          20,740               58.5068
Sale          132                  Transfer
Sale          7,185                58.2459
Sale          190                  59.1456

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          7185          58.2458
CFD            Long          20740         58.5068
CFD            Long          38277         58.5207
CFD            Long          9300          58.6222
CFD            Long          10298         58.7129
CFD            Long          25047         58.8826
CFD            Long          49993         58.8986
CFD            Long          6964          59.0993
CFD            Long          1362          59.1663
CFD            Long          90000         59.2708
CFD            Short         3842          57.6285
CFD            Short         56000         57.6405
CFD            Short         3773          57.6472
CFD            Short         55396         58.2797
CFD            Short         700           58.4282
CFD            Short         2010          58.5545
CFD            Short         7566          58.5991
CFD            Short         22812         58.619
CFD            Short         100000        58.6746
CFD            Short         46120         58.8009
CFD            Short         2100          58.9198
CFD            Short         37            58.9283
CFD            Short         211           59.1746
CFD            Short         90000         59.2708

(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)                 NO


Date of disclosure                         02 July 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