| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Certes Appointments Ltd | 05268316 | 29/10/2004 | Dissolved |
| Certes Resource Solutions Ltd | 04319275 | 28/02/2002 | Dissolved |
| Iris Managed Services Ltd | 05278320 | 04/11/2004 | Dissolved |
| Spinaka Group Plc | 01784407 | 31/07/2002 | Dissolved |
| Transact 1 Ltd | 04964316 | 08/12/2003 | Dissolved |
| Transact Contracting Ltd | 04984626 | 08/12/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CERTES HOLDINGS LIMITED | 04656113 | 17/07/2003 | 01/09/2017 | Silver |
| CERTES IT SERVICE SOLUTIONS LIMITED | 01697294 | 01/12/1992 | 01/09/2017 | Silver |
| SYNTHESIS ADVISORY LIMITED | 02569904 | 12/11/2003 | 18/04/2017 | Silver |
| Spinaka Group Plc | 01784407 | 11/06/1999 | 28/02/2002 | Dissolved |