RNS Number:0976U
Colt Telecom Group PLC
12 January 2004


                                 SCHEDULE 5


                        BLOCK LISTING SIX MONTHLY RETURN



To:   Listing Applications
      UK Listing Authority
      Financial Services Authority
      25, The North Colonnade
      Canary Wharf
      London, E14 5HS


               Please ensure the entries on this return are typed



1. Name of Company:


COLT Telecom Group plc


2. Name of Scheme:


COLT Telecom Group Warrants


3. Period of Return:


From: 18 June 2003 to 17 December 2003


4. Number and class of share(s) (amount of stock/debt security) not issued under

scheme:


606,999


5. Number of Shares issued/allotted under scheme during period:


Nil


6. Balance under scheme not yet issued/allotted at end of period:


606,999


7. Number and class of share(s) (amount of stock/debt securities) originally

listed and the date of admission:


9,796,800 Ordinary Shares of 2.5p each listed on 18 June 1997


Please confirm total number of shares in issue at the end of the period in order

for us to update our records.


1,509,031,799


Contact for queries:


Name:  Mark A. Jenkins


Telephone: 0207 390 3676


Address: COLT Telecom Group plc
         Beaufort House
         15 St. Botolph Street
         London EC3A 7QN

Person making return:

Name:  Mark A. Jenkins, Company Secretary






                      This information is provided by RNS
            The company news service from the London Stock Exchange

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