| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| C I T Developments Ltd | 01735743 | 04/06/1991 | Dissolved |
| C I T Developments Ltd | 01735743 | 04/06/1991 | Dissolved |
| C I T Research Ltd | 02820690 | 24/05/1993 | Dissolved |
| HOUGHTONS (HSLLAW) LIMITED | 03395121 | 31/03/2003 | One Red Flag |
| Houghtons: Management Services Ltd | 03418597 | 03/11/1997 | Dissolved |
| Telecoms Intelligence Unit (Tiu) Ltd | 03263340 | 15/10/1996 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| C-DIEM INVESTMENTS LIMITED | 02821022 | 25/05/1993 | 14/11/2002 | Silver |
| C-DIEM INVESTMENTS LIMITED | 02821022 | 01/07/1993 | 14/11/2002 | Silver |
| C.I.T. Racing Ltd | 02444560 | 20/11/1991 | 14/11/2002 | Dissolved |
| PRIMETRICA LIMITED | 02820691 | 24/05/1993 | 27/08/2002 | Gold |
| WESTCOMBE BUSINESS RESEARCH LIMITED | 01793207 | 08/09/1993 | 01/04/1997 | Dissolved |