Colt Telecom Group PLC announces Further re SEC deregistration

COLT Telecom Group plc (the "Company")

Intention to exercise compulsory transfer provisions

As announced on 30 March 2006, in order to comply with the conditions imposed by US regulators for SEC deregistration, the Company intends to reduce the number of US residents holding its Ordinary Shares and/or ADRs to less than 300 persons. Today, the Company determined that those US Holders with an interest in less than 20,000 Ordinary Shares (equivalent to 5,000 ADRs) will be required to sell their Ordinary Shares. It is anticipated that sale notices will be despatched to those US Holders on 18 May 2006.

For further information regarding the compulsory sale process and termination of the ADR programme, please see COLT's website for a list of frequently asked questions ( http://www.colt.net/uk/en/investors ) or contact the US shareholder helpline on: 1-866-753-7987 (if calling from the US), 0800 288 9409 (if calling from the UK) or +44 (0) 8782 3690 (if calling from outside the US or the UK).

Ends

For further information:

Luke Glass
COLT
 luke.glass@colt.net 
+44 (0)20 7390 3681




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