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               10 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      14,076,370      3.08%       284,777      0.06%
securities
(2) Derivatives        7,240      0.00%         1,246      0.00%
(other than
options)
(3) Options and            0      0.00%             0      0.00%
agreements to
purchase/sell
Total             14,083,610      3.08%       286,023      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      704                  137.8000 AUD
Purchase      801                  137.8000 AUD
Purchase      22,200               137.9285 AUD
Purchase      390                  137.8000 AUD
Purchase      10,000               137.5233 AUD
Purchase      4,337                138.0391 AUD
Purchase      156                  137.8000 AUD
Purchase      494                  137.7400 AUD
Purchase      10,000               137.5233 AUD
Purchase      129                  137.5300 AUD
Purchase      8,574                137.7867 AUD
Sale          19                   137.8000 AUD
Sale          249                  137.7564 AUD
Sale          30                   137.8000 AUD
Sale          32                   137.7563 AUD
Sale          3                    137.8000 AUD
Sale          572                  137.7564 AUD
Sale          70                   137.8000 AUD
Sale          830                  137.7564 AUD
Sale          101                  137.8000 AUD
Sale          17                   137.8000 AUD
Sale          159                  137.7565 AUD
Sale          112                  137.8000 AUD
Sale          145                  137.7565 AUD
Sale          142                  137.7565 AUD
Sale          10,000               137.5233 AUD
Sale          8,574                137.7867 AUD
Sale          4,337                138.0391 AUD
Sale          918                  137.7565 AUD
Sale          485                  137.7564 AUD
Sale          467                  137.8000 AUD
Sale          309                  137.7400 AUD
Sale          30                   137.8000 AUD
Sale          246                  137.7564 AUD
Sale          511                  137.7564 AUD
Sale          62                   137.8000 AUD
Sale          20                   137.8000 AUD
Sale          164                  137.7565 AUD
Sale          3,990                137.7651 AUD
Sale          66                   137.8000 AUD
Sale          854                  137.7565 AUD
Sale          59                   137.8000 AUD
Sale          104                  137.8000 AUD
Sale          880                  137.7564 AUD
Sale          108                  137.8000 AUD
Sale          24                   137.8000 AUD
Sale          202                  137.7564 AUD
Sale          8                    137.8000 AUD
Sale          73                   137.7565 AUD
Sale          249                  137.7564 AUD
Sale          30                   137.8000 AUD
Sale          3,710                137.7564 AUD
Sale          17                   137.8000 AUD
Sale          543                  137.7565 AUD


(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         22200         137.9284

(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                         11 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