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               21 August 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      13,583,305      2.97%       286,372      0.06%
securities
(2) Derivatives        9,841      0.00%        11,162      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,593,146      2.98%       297,534      0.07%


(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      9,400                118.9928 AUD
Purchase      655                  119.2000 AUD
Purchase      3,825                119.2391 AUD
Purchase      164                  118.1388 AUD
Purchase      3,645                118.8978 AUD
Purchase      3,645                118.8978 AUD
Sale          1,365                118.2979 AUD
Sale          854                  118.2980 AUD
Sale          4,281                118.2979 AUD
Sale          4,070                118.2979 AUD
Sale          3,831                118.2979 AUD
Sale          7,651                118.2979 AUD
Sale          854                  118.2980 AUD
Sale          1,222                118.7975 AUD
Sale          295                  119.2062 AUD
Sale          625                  118.2980 AUD
Sale          3,645                118.8978 AUD
Sale          3,825                119.2391 AUD
Sale          7,728                118.9000 AUD
Sale          5,795                118.2979 AUD
Sale          690                  118.2979 AUD
Sale          610                  118.2980 AUD
Sale          1,432                118.2979 AUD
Sale          4,871                118.2979 AUD
Sale          1,526                118.2980 AUD
Sale          3,851                118.2979 AUD
Sale          5,786                118.2979 AUD
Sale          8,560                118.2979 AUD
Sale          966                  118.2979 AUD
Sale          272                  118.2980 AUD
Sale          1,595                118.2979 AUD
Sale          3,578                118.2980 AUD
Sale          2,989                118.2979 AUD
Sale          1,863                118.2980 AUD
Sale          645                  118.2980 AUD
Sale          2,026                118.2980 AUD
Sale          27,890               118.2979 AUD
Sale          1,524                118.2979 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          1222          118.7974
CFD            Long          295           119.2061
CFD            Short         164           118.1388
CFD            Short         9400          118.9928

(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                         22 August 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