| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AJ ENGINEERS CONSULTING LIMITED | 05759135 | 28/03/2006 | Silver |
| AXIS RAIL MAINTENANCE (SCOTLAND) LIMITED | SC337833 | 14/02/2008 | Dissolved |
| Axis Rail Maintenance Ltd | 05672854 | 12/01/2006 | Dissolved |
| BDI PROJECTS LTD | 07362670 | 01/09/2010 | Dissolved |
| ELCON (IRAQ) LIMITED | 08808065 | 09/12/2013 | Dissolved |
| ELCON BANGLADESH (UK) LIMITED | 08258111 | 18/09/2013 | Not Trading |
| ELCON BANGLADESH UK (POWER) LIMITED | 09904114 | 07/12/2015 | Dissolved |
| HOLBORNE-BDI LIMITED | 07351822 | 20/08/2010 | Dissolved |
| HOLBORNE-BDI LIMITED | 12973188 | 26/10/2020 | Not Trading |
| Resco Europe Ltd | 06620361 | 16/06/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BUSINESS DEVELOPMENT INVESTMENT LIMITED | 06806363 | 08/12/2009 | 08/11/2010 | Dissolved |
| LONDON AND NORTH WESTERN RAILWAY COMPANY LIMITED | 02880012 | 01/10/1996 | 09/01/2006 | Silver |
| LONDON AND NORTH WESTERN RAILWAY COMPANY LIMITED | 02880012 | 01/10/1996 | 06/03/2006 | Silver |
| The Britannia Locomotive Co Ltd | 00970562 | 09/10/2002 | 30/11/2005 | Dissolved |
| The Britannia Locomotive Co Ltd | 00970562 | 09/03/2001 | 30/11/2005 | Dissolved |