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               07 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      47,487,271      4.76%    1,178,221       0.12%
securities
(2) Derivatives    2,356,317      0.24%      107,324       0.01%
(other than
options)
(3) Options and       47,800      0.00%      700,810       0.07%
agreements to
purchase/sell
Total              49,891,388     5.00%     1,986,355      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          260                       53.1536
Purchase          136,724                   52.6414
Purchase          150                       53.1184
Purchase          647                       52.2200
Purchase          180                       53.0700
Purchase          42                        Transfer
Purchase          12,168                    53.0087
Purchase          277                       53.1536
Purchase          3,650                     52.5510
Purchase          765                       52.9531
Purchase          3,139                     52.9531
Purchase          107                       52.2200
Purchase          11,933                    52.6734
Purchase          4,151                     52.9531
Purchase          2,499                     53.1536
Purchase          372                       53.1536
Purchase          4,242                     52.9531
Purchase          1,316                     52.9531
Purchase          500                       52.6379
Purchase          1,000                     53.4873
Purchase          60,000                    52.9375
Purchase          218                       53.1536
Purchase          334                       53.0700
Purchase          3,614                     53.0087
Purchase          380                       53.1536
Purchase          25,661                    52.3425
Purchase          1,347                     52.9531
Purchase          5,307                     53.0087
Purchase          238                       52.2200
Purchase          1,699                     53.0700
Purchase          209                       52.9531
Purchase          2,248                     52.9531
Purchase          1,057                     52.7836
Purchase          6,234                     52.2200
Purchase          3,948                     53.1536
Sale              794                       52.2200
Sale              400                       53.9200
Sale              150                       53.1100
Sale              300                       53.9200
Sale              10,188                    52.2200
Sale              33,830                    52.2200
Sale              500                       52.5350
Sale              75                        70.7000 EUR
Sale              1,000                     52.2203
Sale              125                       53.1575
Sale              200                       52.6075
Sale              386                       54.0800
Sale              3,344                     52.2200
Sale              159                       52.9025
Sale              42                        Transfer
Sale              33                        52.7625
Sale              110                       53.1224
Sale              250                       53.1600
Sale              50                        53.0632
Sale              28                        54.1175
Sale              13,045                    53.2075
Sale              10                        53.0820
Sale              75                        52.5500
Sale              85                        53.1575
Sale              4,657                     52.9084
Sale              1,000                     53.4873
Sale              56                        52.3648
Sale              6,602                     52.5664
Sale              28                        54.1100
Sale              41                        53.5200
Sale              1,953                     53.0232
Sale              3,327                     52.8638

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         25661         52.3424
CFD            Short         3650          52.5509
CFD            Short         500           52.6379
CFD            Short         136724        52.6413
CFD            Short         11933         52.6733
CFD            Short         1057          52.7835
CFD            Long          1000          52.2203
CFD            Long          56            52.3648
CFD            Long          6602          52.5663
CFD            Long          3327          52.8638
CFD            Long          4657          52.9084
CFD            Long          10            53.082
CFD            Long          13045         53.2075

(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                         08 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   500                    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