| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ECURIE ECROSSE (UK) LIMITED | 03415051 | 05/08/1997 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ANTONOV PLC | 03003533 | 17/03/2004 | 21/01/2009 | Dissolved |
| ASTONS COACHES LIMITED | 03932865 | 16/11/2004 | 12/04/2006 | Silver |
| AUTODATA LIMITED | 01062717 | 21/02/2013 | 22/05/2014 | Silver |
| AUTODATA PUBLISHING GROUP LIMITED | 01196694 | 10/02/2012 | 22/05/2014 | Bronze |
| CARCLO PLC | 00196249 | 04/09/2003 | 06/09/2012 | Silver |
| CHARGEMASTER LIMITED | 06720009 | 25/02/2009 | 28/06/2013 | Amber |
| ECURIE ECROSSE (UK) LIMITED | 03415051 | 05/08/1997 | 25/05/2006 | Silver |
| LANDER HOLDINGS LIMITED | 01547577 | 18/09/2003 | 31/01/2009 | Bronze |
| MANGANESE BRONZE HOLDINGS PLC | 00061050 | 22/06/1995 | 12/03/2013 | Dissolved |
| NETWORK GROUP HOLDINGS LIMITED | 06281278 | 07/09/2007 | 23/02/2009 | Amber |
| NETWORK VENTURES LIMITED | 04881694 | 27/06/2007 | 23/02/2009 | Bronze |
| OPTIS PRISTINE LIMITED | 04401499 | 01/03/2005 | 30/11/2006 | Dissolved |
| RICARDO INVESTMENTS LIMITED | 02251330 | 23/10/1991 | 09/01/1997 | Silver |
| RICARDO PLC | 00222915 | 16/11/1992 | 13/11/1996 | Silver |
| RICARDO TECHNOLOGY LIMITED | 02924157 | 25/05/1994 | 04/02/1997 | Not Trading |
| Ricardo M T C Ltd | 01029568 | 24/06/1994 | 26/08/1997 | Dissolved |
| Sac International Plc | 01059009 | 09/06/1992 | 26/11/1996 | Dissolved |
| Sonas Group Ltd | 05879962 | 18/07/2006 | 04/12/2008 | Dissolved |
| Sonas Investments Ltd | 05879596 | 18/07/2006 | 04/12/2008 | Dissolved |