SOURCE: COLT Telecom Group plc

July 27, 2005 09:12 ET

Colt Telecom Group PLC announces Holding(s) in Company

London -- (MARKET WIRE) -- July 27, 2005 --

                           SCHEDULE 10
1.   Name of company

     COLT Telecom Group plc

2.   Name of shareholder having a major interest

     Orbis Investment Management Limited

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

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

     Orbis Global Equity Fund Limited 39,234,552
     Orbis Optimal Global Fund, L.P 550,834
     Orbis SICAV Global Equity Fund 2,900,490
     Orbis Optimal SA Fund Limited 1,483,699
     G.A.-Fund-L 776,300
     Orbis MIS-Orbis Global Equity Fund 733,580

5.   Number of shares / amount of stock acquired

6.   Percentage of issued class
7.   Number of shares / amount of stock disposed

8.   Percentage of issued class

9.   Class of security


10.  Date of transaction

11.  Date company informed

     26 July 2005

12.  Total holding following this notification


13.  Total percentage holding of issued class following this 


14.  Any additional information

15.  Name of contact and telephone number for queries

     Gill Maclean +44 20 7863 5314

16.  Name and signature of authorised company official responsible 
     for making this notification

     Caroline Griffin Pain

Date of notification

27 July 2005

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