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               14 February 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      47,331,818      4.74%    1,206,358       0.12%
securities
(2) Derivatives    2,462,251      0.25%       92,087       0.01%
(other than
options)
(3) Options and       47,700      0.00%      700,810       0.07%
agreements to
purchase/sell
Total             49,841,769      5.00%    1,999,255       0.20%


(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      13,699                   55.5500
Purchase      3,445                    54.9914
Purchase      110                      Transfer
Purchase      4,229                    55.5500
Purchase      1,699                    54.6848
Purchase      426                      55.5500
Purchase      5,680                    55.6533
Purchase      426                      55.5500
Purchase      1,006                    55.4754
Purchase      380                      55.7040
Purchase      22,387                   55.5107
Purchase      20,000                   55.5200
Purchase      785                      55.5200
Purchase      13,612                   55.5500
Purchase      1,128                    55.6807
Purchase      11,328                   56.4580
Purchase      403                      55.5200
Purchase      3,524                    55.5500
Purchase      10,700                   55.0000
Purchase      73                       54.9914
Sale          30,926                   56.1693
Sale          200                      55.5075
Sale          7,203                    55.5500
Sale          75                       55.1240
Sale          50                       56.0124
Sale          10                       54.2224
Sale          2,851                    54.8088
Sale          100                      55.3300
Sale          54,185                   55.9185
Sale          110                      Transfer
Sale          150                      55.2620
Sale          135                      55.8200
Sale          38                       56.2508
Sale          48                       54.1525
Sale          75                       55.1240
Sale          50                       56.3520
Sale          118                      56.0124
Sale          35                       55.5125
Sale          55                       56.4007
Sale          110                      55.4450
Sale          63,600                   55.2706
Sale          100                      55.5800
Sale          75                       55.3375
Sale          50                       55.9426
Sale          7,767                    55.5500
Sale          36                       55.2675
Sale          200                      55.3064
Sale          10                       54.2225
Sale          14                       54.6050
Sale          194                      55.2700
Sale          10,195                   55.7649
Sale          60                       55.5825
Sale          29                       75.6900 EUR
Sale          2,468                    Transfer
Sale          50                       54.9400
Sale          29                       Transfer
Sale          50                       55.9628
Sale          31                       54.8900
Sale          13                       55.4600
Sale          1,342                    55.6255
Sale          100                      55.4828
Sale          304                      55.6457
Sale          158                      54.9000
Sale          50                       56.4026
Sale          38                       54.6675
Sale          125                      54.5175
Sale          85                       55.6704


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         1006          55.4754
CFD            Short         22387         55.5106
CFD            Short         5680          55.6532
CFD            Short         1128          55.6806
CFD            Short         11328         56.458
CFD            Long          1342          55.6254
CFD            Long          304           55.6456
CFD            Long          10195         55.7649
CFD            Long          54185         55.9185
CFD            Long          30926         56.1693


(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)

CALL           Purchase             100              56       EURO           15/02/08        .85


(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                         15 February 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   150                    4,400.0000       EURO           20/03/2008
Option            Purchased   -300,000               52.0000          AMER           15/02/2008
Option            Purchased   -100,000               30.0000          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   -250                   5,200.0000       EURO           20/03/2008
Option            Purchased   -10                    5,200.0000       EURO           19/12/2008
Option            Purchased   50                     5,400.0000       EURO           20/03/2008
Option            Purchased   -300,000               56.0000          AMER           15/02/2008
Option            Purchased   125                    4,400.0000       EURO           20/06/2008
Option            Purchased   45,000                 54.0000          AMER           20/03/2008
Option            Purchased   150                    4,000.0000       EURO           20/03/2008
Option            Purchased   250                    3,000.0000       EURO           20/06/2008
Option            Purchased   250                    6,000.0000       EURO           15/02/2008
Option            Purchased   250                    6,000.0000       EURO           15/02/2008
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   400                    5,600.0000       EURO           15/02/2008
Option            Purchased   125                    4,400.0000       EURO           20/06/2008



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