| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Certa (Europe) Ltd | 03393671 | 23/06/1997 | Dissolved |
| Certa (International) Ltd | 03393766 | 23/06/1997 | Dissolved |
| Certa Holdings (Uk) Ltd | 03393773 | 23/06/1997 | Dissolved |
| Mitre Software Company | 01895687 | 31/12/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Certa (U K) Ltd | 03393662 | 23/06/1997 | 07/07/1998 | Dissolved |
| THOMAS MILLER & CO. LIMITED | 01898192 | 31/12/1991 | 28/02/2001 | Silver |
| THOMAS MILLER (UK) HOLDINGS COMPANY LTD | 03766242 | 11/06/1999 | 11/06/2001 | Silver |
| THOMAS MILLER HOLDINGS LTD. | FC021864 | 25/06/1999 | 11/06/2001 | Silver |
| THOMAS MILLER INVESTMENT LTD. | 02187502 | 31/12/1991 | 08/03/1999 | Gold |