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               20 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      12,529,489      2.74%       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             12,551,865      2.75%      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      13,882               66.2834 AUD
Purchase      4,846                65.4472 AUD
Purchase      9,660                66.2900 AUD
Purchase      1,821                66.2900 AUD
Purchase      363                  65.8700 AUD
Purchase      3,862                63.5393 AUD
Purchase      685                  65.8400 AUD
Purchase      342                  65.8254 AUD
Purchase      890                  66.2900 AUD
Purchase      233                  66.2900 AUD
Purchase      466                  66.2900 AUD
Purchase      2,177                66.6267 AUD
Purchase      4,179                66.2900 AUD
Purchase      10,860               65.4471 AUD
Sale          2,022                65.8730 AUD
Sale          573                  65.8730 AUD
Sale          31,085               65.8730 AUD
Sale          3,743                65.8730 AUD
Sale          1,465                65.8730 AUD
Sale          18,337               65.8730 AUD
Sale          10,425               65.8730 AUD
Sale          27,901               65.8730 AUD
Sale          2,285                65.8730 AUD
Sale          13,882               66.2834 AUD
Sale          9,249                65.8730 AUD
Sale          7,989                65.8730 AUD
Sale          2,932                65.8730 AUD
Sale          99,065               65.8730 AUD
Sale          2,183                65.8730 AUD
Sale          2,103                65.8730 AUD
Sale          7,545                65.8730 AUD
Sale          1,546                65.8730 AUD
Sale          10,836               65.8730 AUD
Sale          14,393               65.8730 AUD
Sale          7,556                65.8730 AUD
Sale          3,685                65.8730 AUD
Sale          5,783                65.8730 AUD
Sale          13,882               66.2834 AUD
Sale          7,635                65.8730 AUD
Sale          6,619                65.8730 AUD
Sale          2,350                65.8730 AUD
Sale          5,383                65.8730 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                         21 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