| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CALLSHOP ETC. LIMITED | 03114251 | 01/10/2008 | Dissolved |
| COLT TELECOM FINANCE LIMITED | 04150069 | 01/10/2008 | Dissolved |
| COLT TELECOM QUEST TRUSTEES LIMITED | 03918562 | 01/10/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CITY OF LONDON TELECOMMUNICATIONS LIMITED | 01939847 | 01/10/2008 | 01/01/2012 | Not Trading |
| COLT MOBILE TELECOMMUNICATIONS LIMITED | 05739732 | 01/10/2008 | 01/01/2012 | Not Trading |
| COLT NETHERLANDS HOLDING LIMITED | 03548794 | 01/10/2008 | 01/10/2008 | Silver |
| COLT PENSION TRUSTEES LIMITED | 04108704 | 01/10/2008 | 15/12/2011 | Dissolved |
| COLT TECHNOLOGY SERVICES | 02452736 | 01/10/2008 | 01/01/2012 | Amber |
| COLT TECHNOLOGY SERVICES EUROPE LIMITED | 03218510 | 01/10/2008 | 01/01/2012 | Gold |
| COLT TECHNOLOGY SERVICES GROUP LIMITED | 03232904 | 01/10/2008 | 01/01/2012 | Silver |
| COLT TELECOM FINANCE DENMARK | 04421601 | 01/10/2008 | 01/01/2012 | N/A |
| COLT TELECOM FINANCE EURO | 04421637 | 01/10/2008 | 01/01/2012 | Gold |
| COLT TELECOM FINANCE SWEDEN | 04421628 | 01/10/2008 | 01/01/2012 | N/A |
| COLT TELECOM FINANCE SWITZERLAND | 04421643 | 01/10/2008 | 01/01/2012 | N/A |
| COLT TELECOM HOLDINGS LIMITED | 03889002 | 01/10/2008 | 01/01/2012 | Amber |
| COLT TELECOM LIMITED | 03265299 | 01/10/2008 | 01/01/2012 | Not Trading |
| COLT TELECOM SHARE SCHEME TRUSTEES LIMITED | 04138214 | 01/10/2008 | 01/01/2012 | Dissolved |
| COLT TELECOMMUNICATIONS NOMINEES LIMITED | 04404461 | 01/10/2008 | 01/01/2012 | Strike Off |