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 September 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      13,740,276      3.01%       341,716      0.07%
securities
(2) Derivatives       65,185      0.01%         3,900      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             13,805,461      3.02%       345,616      0.08%


(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      574                  103.5977 AUD
Purchase      4,740                103.5154 AUD
Purchase      39,528               103.5179 AUD
Purchase      15                   102.5407 AUD
Purchase      39,528               103.5179 AUD
Purchase      1,800                104.4000 AUD
Purchase      12,195               104.0855 AUD
Purchase      12,19                104.0855 AUD
Purchase      1                    102.2000 AUD
Purchase      1                    102.2000 AUD
Purchase      1,173                103.5978 AUD
Purchase      202                  103.5977 AUD
Purchase      82                   103.5977 AUD
Purchase      430                  103.5977 AUD
Purchase      1                    102.2000 AUD
Purchase      6                    102.2000 AUD
Purchase      558                  103.5977 AUD
Purchase      2                    102.2000 AUD
Purchase      2,171                103.5978 AUD
Purchase      578                  103.5977 AUD
Purchase      672                  102.0000 AUD
Sale          12,900               102.4543 AUD
Sale          1,256                104.1821 AUD
Sale          39,528               103.5179 AUD
Sale          294,750              106.8500 AUD
Sale          373                  103.0270 AUD
Sale          6,190                102.0000 AUD
Sale          1,078                102.0000 AUD
Sale          165                  102.4513 AUD
Sale          11                   102.2000 AUD
Sale          12,195               104.0855 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          12900         102.4543
CFD            Long          1256          104.1821
CFD            Short         15            102.5406
CFD            Short         4740          103.5154
CFD            Short         1800          104.4

(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 September 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