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               10 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      14,912,924      3.26%     1,079,573      0.24%
securities
(2) Derivatives            0      0.00%         5,701      0.00%
(other than
options)
(3) Options and            0      0.00%            0       0.00%
agreements to
purchase/sell
Total             14,912,924      3.26%     1,085,274      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      44,447               126.4833 AUD
Purchase      536                  128.0500 AUD
Purchase      30,000               126.4788 AUD
Purchase      1,281                128.0500 AUD
Purchase      846                  128.9260 AUD
Purchase      2,102                131.2000 AUD
Purchase      14,447               126.4926 AUD
Sale          242                  127.1866 AUD
Sale          25                   127.1864 AUD
Sale          34                   128.0500 AUD
Sale          82                   128.0500 AUD
Sale          693                  127.1866 AUD
Sale          166                  128.0500 AUD
Sale          2,357                133.0900 AUD
Sale          40,000               135.4117 AUD
Sale          175                  128.0500 AUD
Sale          396                  127.1866 AUD
Sale          176                  128.0500 AUD
Sale          14,447               126.4926 AUD
Sale          251                  127.1866 AUD
Sale          30,000               126.4788 AUD
Sale          494                  128.0500 AUD
Sale          278                  128.0500 AUD
Sale          117                  127.1866 AUD
Sale          964                  126.4800 AUD
Sale          49                   127.1866 AUD
Sale          238                  127.1866 AUD
Sale          194                  128.0500 AUD
Sale          276                  127.1866 AUD
Sale          251                  127.1866 AUD
Sale          46                   127.1866 AUD
Sale          31                   128.0500 AUD
Sale          17                   128.0500 AUD
Sale          170                  128.0500 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         846           128.926

(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                         11 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