Holding(s) in Company

Rio Tinto PLC
20 October 2005

                              SCHEDULE 10
 
                NOTIFICATION OF MAJOR INTERESTS IN SHARES


1)   NAME OF COMPANY

     RIO TINTO PLC

2)   NAME OF SHAREHOLDER HAVING A MAJOR INTEREST

     WELLINGTON MANAGEMENT COMPANY, LLP

3)   Please state whether notification indicates that it is in respect of 
     holding of the Shareholder named in 2 above or in respect of a 
     non-beneficial interest or in the case of an individual holder if it is a
     holding of that person's spouse or children under the age of 18

     AS IN (2) ABOVE

4)   Name of the registered holder(s) and, if more than one holder, the 
     number of shares held by each of them.

     WELLINGTON MANAGEMENT COMPANY, LLP

5)   Number of shares/amount of stock acquired.

     UNKNOWN

6)   Percentage of issued Class

     UNKNOWN

7)   Number of shares/amount of stock disposed

     -

8)   Percentage of issued Class

     -

9)   Class of security

     ORDINARY SHARES OF 10P

10)  Date of transaction

     UNKNOWN

11)  Date company informed

     20 OCTOBER 2005

12)  Total holding following this notification

     30,680,708
               
13)  Total percentage holding of issued class following this notification

     2.87%

14)  Any additional information

     -

15)  Name of contact and telephone number for queries

     LOUISE BRENNAN (020 7753 2116)

16)  Name and signature of authorised company official responsible for 
     making this notification
                                    M J WHYTE

     Date of Notification           20 OCTOBER 2005







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