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               09 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      14,058,106      3.08%       316,716      0.07%
securities
(2) Derivatives       29,179      0.01%           985      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             14,087,285      3.08%       317,701      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      28,786               139.3565 AUD
Purchase      6,220                138.1183 AUD
Purchase      2,743                139.0000 AUD
Purchase      3,674                137.8800 AUD
Purchase      5,478                139.0000 AUD
Purchase      2,506                138.5548 AUD
Purchase      139                  137.8800 AUD
Purchase      44,661               138.3645 AUD
Purchase      752                  139.0000 AUD
Sale          147                  138.4098 AUD
Sale          976                  138.4098 AUD
Sale          85                   139.0000 AUD
Sale          542                  138.4098 AUD
Sale          431                  138.4098 AUD
Sale          565                  139.0000 AUD
Sale          185                  138.4098 AUD
Sale          107                  139.0000 AUD
Sale          23                   139.0000 AUD
Sale          89                   139.0000 AUD
Sale          42                   138.4098 AUD
Sale          250                  139.0000 AUD
Sale          535                  138.4098 AUD
Sale          309                  139.0000 AUD
Sale          422                  138.4099 AUD
Sale          314                  139.0000 AUD
Sale          82                   138.4098 AUD
Sale          95                   139.0000 AUD
Sale          164                  138.4099 AUD
Sale          44,661               138.3645 AUD
Sale          4,500                136.9059 AUD
Sale          6,220                138.1183 AUD
Sale          2,506                138.5548 AUD
Sale          244                  139.0000 AUD
Sale          70                   139.0000 AUD
Sale          3,347                138.4098 AUD
Sale          44,661               138.3645 AUD
Sale          82                   138.4098 AUD
Sale          47                   139.0000 AUD
Sale          44                   139.0000 AUD
Sale          76                   138.4098 AUD
Sale          95                   139.0000 AUD
Sale          165                  138.4099 AUD
Sale          133                  138.4098 AUD
Sale          76                   139.0000 AUD
Sale          234                  139.0000 AUD
Sale          404                  138.4099 AUD
Sale          154                  138.4099 AUD
Sale          479                  138.4098 AUD
Sale          47                   139.0000 AUD
Sale          121                  138.4099 AUD
Sale          72                   139.0000 AUD
Sale          125                  138.4099 AUD
Sale          760                  138.4099 AUD
Sale          441                  139.0000 AUD
Sale          320                  139.0000 AUD
Sale          553                  138.4099 AUD
Sale          331                  139.0000 AUD
Sale          573                  138.4099 AUD
Sale          237                  138.4098 AUD
Sale          136                  139.0000 AUD
Sale          1,959                139.0000 AUD
Sale          277                  139.0000 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          4500          136.9058
CFD            Short         28786         139.3564

(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                         10 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