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               21 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      14,555,870      3.19%    1,572,248       0.34%
securities
(2) Derivatives       59,619      0.01%        1,521       0.00%
(other than
options)
(3) Options and            0      0.00%            0       0.00%
agreements to
purchase/sell
Total             14,615,489      3.20%    1,573,769       0.34%


(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      39,833               128.4517 AUD
Purchase      8,050                128.5754 AUD
Purchase      1,301                128.5054 AUD
Purchase      9,400                128.7126 AUD
Purchase      272                  127.0700 AUD
Purchase      9,400                128.7126 AUD
Purchase      1,548                128.5500 AUD
Purchase      5,982                128.5500 AUD
Purchase      215                  128.5500 AUD
Purchase      272                  127.0700 AUD
Purchase      2,220                128.5054 AUD
Purchase      3,988                128.5500 AUD
Purchase      20,000               128.5629 AUD
Purchase      272                  127.0954 AUD
Purchase      9,400                128.7126 AUD
Purchase      39,833               128.4517 AUD
Purchase      44,271               128.3613 AUD
Purchase      4,208                128.0000 AUD
Purchase      44,271               128.3613 AUD
Purchase      28,050               128.5665 AUD
Sale          9,400                128.7126 AUD
Sale          257                  128.5106 AUD
Sale          272                  127.0700 AUD
Sale          58,630               128.5500 AUD
Sale          8,050                128.5754 AUD
Sale          39,833               128.4517 AUD
Sale          792                  128.5371 AUD
Sale          6,806                128.5500 AUD
Sale          20,000               128.5629 AUD
Sale          272                  127.0700 AUD
Sale          44,271               128.3613 AUD
Sale          39,833               128.4517 AUD
Sale          215                  128.5500 AUD
Sale          39,833               128.4517 AUD
Sale          6,280                128.5500 AUD
Sale          44,271               128.3613 AUD
Sale          2,506                128.5500 AUD
Sale          9,400                128.7126 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         272           127.0954
CFD            Short         9400          128.7125
CFD            Long          39833         128.4516


(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                         24 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