| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Mapping Investments Ltd | 06347627 | 10/09/2007 | Dissolved |
| Secure Communications & Information Ltd | 03151290 | 26/01/1996 | Dissolved |
| Sentinel Concord Ltd | 05278800 | 05/11/2004 | Dissolved |
| Sp Residual Ltd | 05278583 | 04/11/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ADVANCED GEOSPATIAL SOLUTIONS LIMITED | 04124858 | 23/10/2001 | 17/12/2012 | Dissolved |
| CENTRE FOR DEFENCE AND INTERNATIONAL SECURITY STUDIES LIMITED | 05278868 | 05/11/2004 | 27/11/2006 | Dissolved |
| COHORT PLC | 05684823 | 23/01/2006 | 27/09/2022 | Gold |
| MASS CONSULTANTS LIMITED | 01705804 | 01/08/2006 | 25/05/2009 | Silver |
| MASS LIMITED | 05863964 | 01/08/2006 | 08/07/2009 | Gold |
| SEA (GROUP) LTD. | 02430846 | 26/10/2007 | 24/06/2009 | Bronze |
| SYSTEMS COMMUNICATIONS AND NETWORKS (SCN) LIMITED | 03227365 | 25/03/1997 | 22/12/1998 | Dissolved |
| SYSTEMS CONSULTANTS SERVICES LIMITED | 02707469 | 29/03/2010 | 04/06/2010 | Insolvent |