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               17 April 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      14,134,539      3.09%       284,965      0.06%
securities
(2) Derivatives        7,428      0.00%         1,594      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             14,141,967      3.10%       286,559      0.06%


(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      1,841                146.0000 AUD
Purchase      75                   145.6946 AUD
Purchase      71                   146.1300 AUD
Purchase      71                   146.0600 AUD
Purchase      3                    Transfer
Purchase      7                    Transfer
Purchase      10                   Transfer
Purchase      4,043                145.5496 AUD
Purchase      75                   145.6946 AUD
Purchase      1,400                146.4479 AUD
Purchase      1,784                140.6000 AUD
Sale          3,100                146.1826 AUD
Sale          1,739                145.9267 AUD
Sale          142                  145.9267 AUD
Sale          123                  145.9266 AUD
Sale          471                  145.9267 AUD
Sale          396                  145.9266 AUD
Sale          71                   146.1300 AUD
Sale          10                   Transfer
Sale          420                  145.9266 AUD
Sale          117                  145.9266 AUD
Sale          423                  145.9266 AUD
Sale          2,951                Transfer
Sale          222                  145.9267 AUD
Sale          151                  145.9267 AUD
Sale          71                   146.0600 AUD
Sale          152                  145.9266 AUD
Sale          75                   145.6946 AUD
Sale          217                  145.9266 AUD
Sale          1,142                145.9267 AUD
Sale          447                  145.9266 AUD
Sale          386                  145.9267 AUD
Sale          269                  145.9267 AUD
Sale          38                   145.9266 AUD
Sale          4,043                145.5496 AUD


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          3100          146.1825
CFD            Short         1400          146.4478

(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                         18 April 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