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               16 October 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      13,078,032      2.86%       311,407      0.07%
securities
(2) Derivatives       22,376      0.00%           689      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,100,408      2.87%       312,096      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      4,858                67.4908 AUD
Purchase      90                   66.0100 AUD
Purchase      130                  66.0100 AUD
Purchase      403                  66.0100 AUD
Purchase      1,400                67.0000 AUD
Purchase      5,535                66.0100 AUD
Purchase      8,678                67.1093 AUD
Purchase      3,443                67.4522 AUD
Purchase      14,902               66.0166 AUD
Purchase      466                  66.0100 AUD
Purchase      14,902               66.0166 AUD
Purchase      501                  66.0100 AUD
Sale          1,596                67.4455 AUD
Sale          1,418                67.4455 AUD
Sale          147                  67.4454 AUD
Sale          533                  67.4455 AUD
Sale          806                  67.4454 AUD
Sale          2,011                67.0000 AUD
Sale          319                  67.0000 AUD
Sale          1,532                67.4454 AUD
Sale          1,114                67.4455 AUD
Sale          2,006                67.4454 AUD
Sale          3,836                67.4454 AUD
Sale          1,107                67.4455 AUD
Sale          802                  67.4454 AUD
Sale          2,500                67.4454 AUD
Sale          861                  67.4455 AUD
Sale          2,808                67.4454 AUD
Sale          882                  67.4454 AUD
Sale          59                   67.4455 AUD
Sale          11,399               67.4454 AUD
Sale          50                   67.4454 AUD
Sale          2,138                67.4455 AUD
Sale          415                  67.0000 AUD
Sale          5,239                67.0000 AUD
Sale          512                  67.0000 AUD
Sale          7,380                66.0100 AUD
Sale          8,678                67.1093 AUD
Sale          13,536               67.2462 AUD
Sale          14,902               66.0166 AUD
Sale          4,858                67.4908 AUD
Sale          176                  66.0100 AUD
Sale          889                  67.0000 AUD
Sale          3,129                67.0000 AUD
Sale          34,983               67.4454 AUD
Sale          1,883                67.0000 AUD
Sale          591                  67.0000 AUD
Sale          5,916                67.0000 AUD
Sale          3,796                67.0000 AUD
Sale          10,305               67.4454 AUD
Sale          214                  67.4455 AUD
Sale          7,300                78.5000 AUD
Sale          100                  67.0000 AUD
Sale          3,676                67.4454 AUD
Sale          1,765                67.0000 AUD
Sale          426                  67.0000 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
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                         17 October 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