| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A T Distributors Ltd | 02476456 | 24/03/1993 | Dissolved |
| A T Drives Ltd | 02112476 | 01/05/1993 | Dissolved |
| At Controls Ltd | 03640017 | 02/11/1998 | Dissolved |
| Bmco Ltd | 03864130 | 03/03/2000 | Dissolved |
| E + J Consultancy Ltd | 04261517 | 10/08/2001 | Dissolved |
| PROSPECT HOUSE HOLDINGS LIMITED | 06482005 | 24/01/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| A T Group (Holdings) Ltd | 02536622 | 24/03/1993 | 10/05/2005 | Dissolved |
| ATG ACCESS (HOLDINGS) LIMITED | 03864111 | 03/03/2000 | 06/04/2006 | Dissolved |
| ATG ACCESS LTD | 02643622 | 04/07/1994 | 06/04/2006 | Silver |
| ATG AIRPORTS LIMITED | 02590813 | 24/03/1993 | 10/05/2005 | Bronze |
| ATG ENVIRONMENTAL LIMITED | 03864107 | 03/03/2000 | 30/09/2002 | Dissolved |
| ATG POWER LIMITED | 03864143 | 03/03/2000 | 12/07/2001 | Dissolved |
| ATG SERVICES LIMITED | 03864116 | 03/03/2000 | 07/11/2003 | Dissolved |
| ATG UK LIMITED | 03864119 | 03/03/2000 | 10/05/2005 | Silver |
| ATG UV TECHNOLOGY LIMITED | 01729122 | 04/06/1993 | 30/09/2002 | Dissolved |
| AUTOMATION EXIT 2011 LIMITED | 03955373 | 03/04/2000 | 12/07/2001 | Dissolved |
| BILFINGER INDUSTRIAL AUTOMATION SERVICES LIMITED | 03864114 | 30/01/2004 | 01/01/2014 | Dissolved |
| COBACO BARRIER COMPANY LIMITED | 03911862 | 15/02/2000 | 25/09/2006 | Dissolved |
| ENGINEERING EXIT 2011 LIMITED | 03955377 | 03/04/2000 | 12/07/2001 | Dissolved |
| VEHICLE PROTECTION SECURITY POSTS LIMITED | 04857158 | 06/08/2003 | 07/08/2006 | Dissolved |
| Vantek Ltd | 04028746 | 06/09/2000 | 22/05/2003 | Dissolved |