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               02 May 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      14,109,309      3.09%       260,544      0.06%
securities
(2) Derivatives       19,674       0.00%        1,990      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             14,128,983      3.09%       262,534      0.06%


(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      36                   136.6072 AUD
Purchase      315                  136.0272 AUD
Purchase      4,264                140.4047 AUD
Purchase      986                  138.2600 AUD
Purchase      4,348                138.2600 AUD
Purchase      1,838                138.2600 AUD
Purchase      12,145               137.3699 AUD
Purchase      515                  136.0000 AUD
Purchase      5,600                139.8321 AUD
Purchase      13,315               136.4660 AUD
Sale          12,145               137.3699 AUD
Sale          904                  140.3524 AUD
Sale          315                  136.6223 AUD
Sale          2,157                136.5549 AUD
Sale          13,315               136.4660 AUD
Sale          22,200               137.4643 AUD
Sale          6,096                138.9500 AUD
Sale          25                   140.1992 AUD
Sale          658                  137.0225 AUD
Sale          1,510                137.0224 AUD
Sale          1,356                136.0792 AUD
Sale          26,100               140.3337 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          2157          136.5548
CFD            Long          315           136.6223
CFD            Long          22200         137.4642
CFD            Long          26100         140.3336
CFD            Long          904           140.3524
CFD            Short         315           136.0272
CFD            Short         36            136.6072
CFD            Short         5600          139.8321
CFD            Short         4264          140.4046

(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                         06 May 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