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               30 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      44,395,173      4.45%     1,241,231      0.12%
securities
(2) Derivatives    1,001,935      0.10%       157,913      0.02%
(other than
options)
(3) Options and      101,200      0.01%         1,030      0.00%
agreements to
purchase/sell
Total             45,498,308      4.56%     1,400,174      0.14%


(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      1,933                60.0900
Purchase      521                  60.0900
Purchase      706                  60.0900
Purchase      581                  60.0900
Purchase      2,942                60.0900
Purchase      6,911                60.0900
Purchase      294                  60.0900
Purchase      534                  60.0900
Purchase      344                  60.0900
Purchase      288                  60.0900
Purchase      172                  60.0900
Purchase      327                  60.0900
Purchase      544                  60.0900
Purchase      180                  60.0900
Purchase      9,293                60.0900
Purchase      212                  60.0900
Purchase      369                  60.0900
Purchase      443                  59.9300
Purchase      18,398               60.2397
Purchase      1,800                60.1960
Purchase      7,300                60.2718
Purchase      1,360                60.0783
Purchase      443                  59.9300
Purchase      175                  60.4194
Purchase      19,018               60.3007
Purchase      483                  60.3600
Purchase      24,480               60.2018
Purchase      9                    57.3725
Purchase      700                  59.8199
Purchase      4,011                60.0900
Purchase      100                  75.9300 EUR
Purchase      100                  75.8000 EUR
Purchase      785                  60.0327
Purchase      771                  60.0900
Purchase      40                   59.8535
Purchase      290                  56.3000
Purchase      662                  60.0900
Purchase      1,723                59.6700
Purchase      198                  60.0327
Purchase      249                  56.3000
Purchase      67                   59.6255
Purchase      232                  60.0327
Purchase      192                  60.0900
Sale          30,980               59.5683
Sale          10,667               59.7303
Sale          423                  60.0116
Sale          1,300                59.7850
Sale          979                  59.8899
Sale          23,995               59.6955
Sale          13,999               59.9025
Sale          127                  59.8205
Sale          75                   59.9375
Sale          2,187                59.7055
Sale          3,882                58.4300
Sale          1,615                59.6440
Sale          84                   60.0600
Sale          443                  59.9300
Sale          1,267                60.0900
Sale          2,767                60.0116
Sale          6,900                59.5334
Sale          2,415                58.4300
Sale          82,564               60.0735
Sale          1,630                59.6800
Sale          400                  60.0710
Sale          75                   59.8912
Sale          581                  60.0900
Sale          85                   59.8631
Sale          75                   59.7831
Sale          5,389                60.0900
Sale          50                   60.2048
Sale          67                   59.6045
Sale          55                   59.8775
Sale          130                  59.7932
Sale          75                   59.8075
Sale          175                  59.7924
Sale          100                  60.4232
Sale          20,458               60.0900
Sale          330                  59.9700
Sale          185                  60.1636
Sale          110                  59.3348
Sale          369                  60.0900
Sale          79                   60.0124
Sale          150                  60.3316
Sale          12,772               60.0900
Sale          135                  60.2516
Sale          3,530                60.0900
Sale          4,481                60.0900
Sale          2,942                60.0900
Sale          200                  59.4000
Sale          426                  60.0900
Sale          190                  59.8020
Sale          100                  60.1130
Sale          6,644                60.0900
Sale          423                  60.0900

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          6900          59.5333
CFD            Long          30980         59.5683
CFD            Long          1615          59.644
CFD            Long          23995         59.6955
CFD            Long          2187          59.7055
CFD            Long          10667         59.7302
CFD            Long          979           59.8898
CFD            Long          13999         59.9024
CFD            Long          400           60.071
CFD            Long          82564         60.0734
CFD            Long          369           60.09
CFD            Short         1273          59.7851
CFD            Short         700           59.8199
CFD            Short         2216          59.9278
CFD            Short         1037          60.078
CFD            Short         1360          60.0782
CFD            Short         369           60.09
CFD            Short         1800          60.196
CFD            Short         24480         60.2017
CFD            Short         18398         60.2396
CFD            Short         7300          60.2718
CFD            Short         19018         60.3007
CFD            Short         483           60.36
CFD            Short         175           60.4194

(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                         01 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