RNS Number:2079O
Colt Telecom Group PLC
31 July 2003



                                   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 Sharesave Scheme

3. Period of Return:

From: 1 February 2003 to 30 July 2003

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

1,090,176

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

5,072

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

1,085,104

7. Number and class of share(s) (amount of stock/debt securities) originally
listed and the date of admission:

2,000,000 Ordinary Shares of 2.5p each listed on 31 January 2001

Please confirm total number of shares in issue at the end of the period in order
for us to update our records.

1,507,793,935

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
         England

Person making return:

Name:  Mark A. Jenkins, Company Secretary





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

END
BLRQFLFXXDBBBBB