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 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      44,442,160      4.45%     1,207,995      0.12%
securities
(2) Derivatives      993,531      0.10%        90,235      0.01%
(other than
options)
(3) Options and      101,200      0.01%         1,030      0.00%
agreements to
purchase/sell
Total             45,536,891      4.56%     1,299,260      0.13%


(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         7,435                  58.6000
Purchase         200                    58.6568
Purchase         34,327                 58.2554
Purchase         95                     Transfer
Purchase         2,600                  59.5742
Purchase         533                    58.8184
Purchase         4,800                  58.5327
Purchase         33,440                 58.6000
Purchase         105,464                58.4811
Purchase         21,800                 59.3844
Purchase         9,893                  58.6000
Purchase         799                    58.6000
Purchase         7,470                  58.6000
Purchase         159                    59.5000
Purchase         186                    59.5000
Purchase         555                    59.5000
Purchase         850                    58.5236
Sale             8,789                  58.5363
Sale             78,136                 58.5622
Sale             95                     Transfer
Sale             14,748                 58.3597
Sale             105,464                58.4811
Sale             4,500                  58.5540
Sale             7,892                  58.5395
Sale             113,777                58.3355
Sale             24,576                 58.3513
Sale             170                    58.0832
Sale             8,357                  58.8212
Sale             412                    61.0508
Sale             75                     58.3160
Sale             80                     58.0500
Sale             527                    58.6000
Sale             100                    58.2600
Sale             37,197                 61.2900
Sale             55                     58.1324
Sale             100                    58.0500
Sale             850                    58.6000
Sale             70                     58.0916
Sale             200                    58.6920
Sale             200                    58.6136
Sale             80                     58.0500
Sale             25,075                 58.4916
Sale             3,305                  58.6000
Sale             90                     58.4246
Sale             50                     58.7336
Sale             50                     58.7236
Sale             55                     58.1024
Sale             100                    73.5700 EUR
Sale             50                     58.1140
Sale             27                     60.9600
Sale             50                     58.6530
Sale             50                     58.6336

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          113777        58.3354
CFD            Long          24576         58.3513
CFD            Long          14748         58.3596
CFD            Long          105464        58.481
CFD            Long          25075         58.4915
CFD            Long          8789          58.5362
CFD            Long          7892          58.5394
CFD            Long          78136         58.5622
CFD            Long          8357          58.8212
CFD            Long          27            60.96
CFD            Short         34327         58.2554
CFD            Short         105464        58.481
CFD            Short         4800          58.5327
CFD            Short         23907         58.6425
CFD            Short         533           58.8183
CFD            Short         2600          59.5742


(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                         26 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