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               14 May 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      13,983,016      3.06%       248,110      0.05%
securities
(2) Derivatives        7,240      0.00%        12,635      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,990,256      3.06%       260,745      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      11,108               151.1000 AUD
Purchase      7,600                149.4980 AUD
Purchase      4,855                151.1000 AUD
Purchase      354                  151.1000 AUD
Purchase      500                  149.5199 AUD
Purchase      1,923                149.1600 AUD
Sale          97                   149.1600 AUD
Sale          36                   149.1600 AUD
Sale          51                   150.0591 AUD
Sale          220                  149.1600 AUD
Sale          299                  150.0590 AUD
Sale          457                  149.1600 AUD
Sale          133                  150.0591 AUD
Sale          32                   149.1600 AUD
Sale          7,600                149.4980 AUD
Sale          1,553                149.5080 AUD
Sale          619                  150.0590 AUD
Sale          429                  149.1600 AUD
Sale          1,389                150.5722 AUD
Sale          21,011               149.2399 AUD
Sale          44                   150.0591 AUD
Sale          206                  150.0590 AUD
Sale          152                  149.1600 AUD
Sale          613                  145.2873 AUD
Sale          1,448                145.2873 AUD
Sale          9,989                149.2399 AUD
Sale          650                  151.1000 AUD
Sale          500                  149.1600 AUD
Sale          671                  150.0591 AUD
Sale          36,000               149.2399 AUD
Sale          581                  150.0591 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          1553          149.5079
CFD            Short         500           149.5199

(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                         15 May 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