Rule 8.3 - RIO TINTO Limited

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               12 March 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      14,932,222      3.27%    1,067,914       0.23%
securities
(2) Derivatives          493      0.00%        5,961       0.00%
(other than
options)
(3) Options and            0      0.00%            0       0.00%
agreements to
purchase/sell
Total             14,932,222      3.27%    1,073,875       0.24%


(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      2,088                125.3781 AUD
Purchase      249                  125.3782 AUD
Purchase      5,463                126.6412 AUD
Purchase      6,666                125.3008 AUD
Purchase      286                  125.3782 AUD
Purchase      588                  125.3781 AUD
Purchase      1,980                125.3782 AUD
Purchase      535                  125.3781 AUD
Purchase      1,550                125.3782 AUD
Purchase      551                  125.3781 AUD
Purchase      374                  125.3782 AUD
Purchase      1,043                125.3782 AUD
Purchase      153                  125.3782 AUD
Purchase      557                  125.3781 AUD
Purchase      20,587               125.2500 AUD
Purchase      32,503               125.2375 AUD
Purchase      293                  125.3781 AUD
Purchase      1,198                125.3781 AUD
Purchase      6,666                125.3008 AUD
Purchase      156                  125.3781 AUD
Purchase      1,052                125.3781 AUD
Purchase      203                  126.2574 AUD
Purchase      149                  125.3782 AUD
Purchase      321                  125.3781 AUD
Purchase      1,341                125.3781 AUD
Purchase      212                  125.3782 AUD
Purchase      165                  125.3782 AUD
Purchase      423                  125.3782 AUD
Purchase      202                  125.3782 AUD
Purchase      342                  125.3781 AUD
Purchase      261                  125.3781 AUD
Purchase      1,422                125.3782 AUD
Purchase      937                  125.3781 AUD
Purchase      794                  125.3781 AUD
Purchase      203                  126.2574 AUD
Purchase      11,545               125.3781 AUD
Purchase      358                  125.3782 AUD
Sale          32,503               125.2375 AUD
Sale          5,463                126.6412 AUD
Sale          32,706               125.2438 AUD
Sale          3,648                125.2500 AUD
Sale          6,666                125.3008 AUD
Sale          203                  126.2574 AUD
Sale          203                  126.2574 AUD


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


(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


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.


None

Is a Supplemental Form 8 attached? (Note 9)                 NO


Date of disclosure                         13 March 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