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               28 April 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      14,133,182      3.09%       249,788      0.05%
securities
(2) Derivatives        8,918      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             14,142,100      3.10%       249,788      0.05%


(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      1,813                143.9780 AUD
Purchase      7,249                142.9391 AUD
Purchase      4,009                142.9748 AUD
Sale          625                  143.2780 AUD
Sale          4,009                142.9748 AUD
Sale          2,206                142.5611 AUD
Sale          7,249                142.9390 AUD
Sale          14,894               144.5284 AUD
Sale          212                  146.9500 AUD
Sale          672                  143.5000 AUD
Sale          2,413                143.5000 AUD
Sale          1,037                143.5000 AUD
Sale          4,064                143.5000 AUD
Sale          265                  143.2780 AUD
Sale          398                  143.2780 AUD
Sale          2,365                143.2780 AUD
Sale          78                   143.2781 AUD
Sale          284                  143.2780 AUD
Sale          1,444                143.2781 AUD
Sale          1,943                143.2781 AUD
Sale          130                  143.2780 AUD
Sale          347                  143.2780 AUD
Sale          306                  143.2781 AUD
Sale          421                  143.2780 AUD
Sale          657                  143.2781 AUD
Sale          723                  143.2781 AUD
Sale          272                  143.2780 AUD
Sale          328                  143.2780 AUD
Sale          100                  143.2781 AUD
Sale          1,309                143.2780 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          2206          142.561
CFD            Long          14894         144.5284
CFD            Short         1813          143.978

(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                         29 April 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