Rule 8.3 - RIO TINTO LTD

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    NPV
to which the dealings being
disclosed relate (Note 2)
Date of dealing               04 December 2007

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      13,768,449      3.01%    2,222,834       0.49%
securities
(2) Derivatives      108,990      0.02%       76,753       0.02%
(other than
options)
(3) Options and            0      0.00%            0       0.00%
agreements to
purchase/sell
Total             13,877,439      3.04%     2,299,587      0.50%


(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      20,000               143.0857 AUD
Purchase      161                  143.0000 AUD
Purchase      5,260                143.1000 AUD
Purchase      14,424               143.6414 AUD
Purchase      2,564                143.1000 AUD
Purchase      17,817               143.0857 AUD
Purchase      14,640               145.6441 AUD
Sale          831                  145.5646 AUD
Sale          1,408                145.9875 AUD
Sale          421                  145.9875 AUD
Sale          433                  145.9874 AUD
Sale          20,000               143.0857 AUD
Sale          565                  145.9874 AUD
Sale          527                  145.9874 AUD
Sale          581                  145.9875 AUD
Sale          567                  145.9875 AUD
Sale          150                  145.9874 AUD
Sale          477                  145.5646 AUD
Sale          530                  143.1000 AUD
Sale          148                  145.9875 AUD
Sale          839                  145.9875 AUD
Sale          101                  143.9400 AUD
Sale          928                  145.9875 AUD
Sale          103                  145.9874 AUD
Sale          895                  145.9874 AUD
Sale          285                  145.9875 AUD
Sale          128                  145.9875 AUD
Sale          172                  145.9874 AUD
Sale          288                  145.9874 AUD
Sale          313                  145.9875 AUD
Sale          14,424               143.6414 AUD
Sale          1,216                143.6462 AUD
Sale          913                  145.9875 AUD
Sale          705                  145.9875 AUD
Sale          357                  145.9874 AUD
Sale          37,817               143.0857 AUD
Sale          17,817               143.0857 AUD
Sale          1,422                143.6461 AUD

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         14640         145.6441

(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                         05 December 2007
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