| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A T A Selection (Services) Ltd | 03182774 | 09/04/1996 | Dissolved |
| A T A Selection And Management Services Ltd | 01014646 | 01/06/1991 | Dissolved |
| All Type Appointments (Birmingham) Ltd | 01143977 | 01/06/1991 | Dissolved |
| All Type Appointments (Crawley) Ltd | 01143978 | 01/06/1991 | Dissolved |
| All Type Appointments (Edinburgh) Ltd | 01281636 | 01/06/1991 | Dissolved |
| All Type Appointments (Manchester) Ltd | 01110383 | 01/06/1991 | Dissolved |
| All Type Appointments (Southampton) Ltd | 01328533 | 01/06/1991 | Dissolved |
| Ata Rail Recruitment Ltd | 03475804 | 08/11/2000 | Dissolved |
| CATALIS LIMITED | 04086015 | 03/10/2000 | Dissolved |
| Catalis Training Ltd | 03646230 | 08/11/2000 | Dissolved |
| College of Railway Technology Ltd | 03652344 | 08/11/2000 | Dissolved |
| Fairbourne Adventure Ltd | 03535754 | 26/03/1998 | Dissolved |
| Gem-Weld (Uk) Ltd. | SC212079 | 28/02/2006 | Dissolved |
| Heritage Restorations (Railways) Ltd | 03688165 | 23/12/1998 | Dissolved |
| Kenlun Ltd | 00345763 | 21/12/1990 | Dissolved |
| P F (SALES) LTD | FC014816 | 21/12/1992 | Bronze |
| Rail Training Audit Services Ltd | 04086002 | 03/10/2000 | Dissolved |
| Rtas Ltd | 03481951 | 08/11/2000 | Dissolved |
| Rtas Services Ltd | 03728872 | 08/11/2000 | Dissolved |
| Sloan Shrago Ltd | 03053495 | 01/04/1996 | Dissolved |
| The Fairbourne Hotel Ltd | 03535794 | 26/03/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ANGLIA SHUNTERS LIMITED | 00114816 | 21/12/1991 | 29/07/2013 | Silver |
| ATA GLOBAL STAFFING SOLUTIONS LIMITED | 03125335 | 08/11/2000 | 25/05/2011 | Amber |
| ATA MANAGEMENT SERVICES LIMITED | 03262509 | 01/10/1997 | 25/05/2011 | Dissolved |
| ATA RECRUITMENT LIMITED | 04315383 | 01/11/2001 | 25/05/2011 | Not Trading |
| ATA SELECTION LIMITED | 03947180 | 23/10/2000 | 25/05/2011 | Dissolved |
| BROADCASTLE FINANCE LIMITED | 00542018 | 11/05/1991 | 30/06/1992 | Dissolved |
| BROADCASTLE LIMITED | 01901899 | 03/06/1991 | 30/06/1992 | Dissolved |
| Broadcastle (Holdings) Ltd | 01194065 | 11/05/1991 | 30/06/1992 | Dissolved |
| CATALIS GROUP LIMITED | 03351659 | 08/11/2000 | 25/05/2011 | Dissolved |
| Capital & Provincial Advertising Ltd | 01372652 | 01/06/1991 | 04/01/1993 | Dissolved |
| Chillington Marine Ltd | 00448758 | 29/09/1991 | 03/02/1995 | Dissolved |
| GANYMEDE SOLUTIONS LIMITED | 03579773 | 10/10/2002 | 25/05/2011 | Silver |
| GLOBAL CHOICE RECRUITMENT LIMITED | 04026388 | 23/10/2000 | 23/04/2009 | Dissolved |
| INCA GEOMETRIC LIMITED | 01731487 | 14/06/1991 | 15/03/2019 | Silver |
| Johnson & Knight Associates Ltd | 02635604 | 31/05/1995 | 01/03/1996 | Dissolved |
| Johnson & Knight Associates Ltd | 02635604 | 05/09/1994 | 01/03/1996 | Dissolved |
| KENT ENGINEERING COMPONENTS LIMITED | 02728232 | 12/02/1993 | 04/12/1995 | Silver |
| Old Broadcastle Finance Ltd | 01626710 | 11/05/1991 | 30/06/1992 | Dissolved |
| P & G Marine Ltd | 00784283 | 07/05/1993 | 03/02/1995 | Dissolved |
| P&g Foundries Ltd | 00708086 | 23/07/1992 | 28/11/1993 | Dissolved |
| RTC GROUP PLC | 02558971 | 16/12/1991 | 31/07/2023 | Amber |
| THE DERBY CONFERENCE CENTRE LIMITED | 03061642 | 08/11/2000 | 25/05/2011 | Bronze |
| TUNBRIDGE WELLS AND ERIDGE RAILWAY PRESERVATION SOCIETY LIMITED(THE) | 02129019 | 29/11/1997 | 01/12/1999 | Gold |
| Torque Credit Ltd | SC034404 | 09/05/1989 | 11/05/1990 | Dissolved |