| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 9A Ltd | 03673258 | 16/11/2000 | Dissolved |
| Broomco (2342) Ltd | 04096328 | 22/11/2000 | Dissolved |
| Broomco (2343) Ltd | 04096335 | 22/11/2000 | Dissolved |
| Broomco (2344) Ltd | 04096338 | 22/11/2000 | Dissolved |
| Thurnall | 01985295 | 28/11/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CORE TELECOMMUNICATIONS LIMITED | 03274623 | 28/07/1997 | 08/02/2010 | Not Trading |
| Martin Dawes Switched Services Ltd | 03586641 | 22/12/1999 | 07/11/2007 | Dissolved |
| NORTHBANK INDUSTRIAL PARK MANAGEMENT COMPANY LIMITED | 02675241 | 09/06/1997 | 14/01/2000 | Bronze |
| OLD OPAL TELECOM LIMITED | 03734422 | 22/12/1999 | 05/05/2000 | Dissolved |
| OPAL TELECOMMUNICATIONS PLC | 03214579 | 22/12/1999 | 01/07/2010 | Dissolved |