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               26 March 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      14,025,353      3.07%      331,443       0.07%
securities
(2) Derivatives        7,240      0.00%       24,215       0.01%
(other than
options)
(3) Options and            0      0.00%            0       0.00%
agreements to
purchase/sell
Total             14,032,593      3.07%      355,658       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      1,329                118.7553 AUD
Purchase      6,409                118.7553 AUD
Purchase      139                  118.7553 AUD
Purchase      3,940                118.7664 AUD
Purchase      405                  119.0000 AUD
Purchase      120                  118.7553 AUD
Purchase      118                  119.0000 AUD
Purchase      174                  118.7553 AUD
Purchase      171                  119.0000 AUD
Purchase      1,549                119.0000 AUD
Purchase      1,564                118.7553 AUD
Purchase      353                  119.0000 AUD
Purchase      357                  118.7553 AUD
Purchase      236                  119.0000 AUD
Purchase      412                  118.7553 AUD
Purchase      1,611                119.0000 AUD
Purchase      114                  119.0000 AUD
Purchase      7,169                118.2582 AUD
Purchase      116                  118.7552 AUD
Purchase      53                   118.2700 AUD
Purchase      167                  118.2700 AUD
Purchase      239                  118.7553 AUD
Purchase      176                  118.7553 AUD
Purchase      1,316                119.0000 AUD
Purchase      1,626                118.7553 AUD
Purchase      1,991                118.7553 AUD
Purchase      1,972                119.0000 AUD
Purchase      1,024                118.7553 AUD
Purchase      1,014                119.0000 AUD
Purchase      137                  119.0000 AUD
Purchase      174                  119.0000 AUD
Purchase      315                  118.7553 AUD
Purchase      6,372                119.0000 AUD
Purchase      480                  118.2700 AUD
Purchase      283                  118.5200 AUD
Purchase      364                  118.5200 AUD
Purchase      177                  118.5200 AUD
Purchase      189                  118.7552 AUD
Purchase      187                  119.0000 AUD
Purchase      94                   119.0000 AUD
Purchase      96                   118.7553 AUD
Purchase      409                  118.7553 AUD
Purchase      114                  119.0000 AUD
Purchase      408                  119.0000 AUD
Purchase      311                  119.0000 AUD
Purchase      569                  119.0000 AUD
Purchase      535                  118.7552 AUD
Purchase      1,090                118.7553 AUD
Purchase      1,079                119.0000 AUD
Purchase      117                  118.7553 AUD
Purchase      951                  118.7553 AUD
Purchase      575                  118.7552 AUD
Purchase      530                  119.0000 AUD
Purchase      249                  119.0000 AUD
Purchase      252                  118.7552 AUD
Purchase      628                  118.7552 AUD
Purchase      621                  119.0000 AUD
Purchase      1,199                119.0000 AUD
Purchase      1,211                118.7553 AUD
Purchase      941                  119.0000 AUD
Sale          9,447                119.0000 AUD
Sale          12,397               119.0000 AUD
Sale          95                   118.2700 AUD
Sale          16,100               118.8281 AUD
Sale          7,169                118.2582 AUD
Sale          7,169                118.2582 AUD
Sale          3,940                118.7664 AUD
Sale          242                  118.7052 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          16100         118.8281

(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                         27 March 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