| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A S C (Mechanical & Electrical) Engineering Ltd | 03604650 | 04/08/1998 | Dissolved |
| ASC OSBORNE LIMITED | 04786597 | 04/06/2003 | Dissolved |
| Asc (M & E) Ltd | 04565966 | 17/10/2002 | Dissolved |
| CROWN ALLIANCE UK LIMITED | 06290156 | 22/06/2007 | Dissolved |
| CROWN ENVIRONMENTAL LIMITED | 08188191 | 22/08/2012 | Dissolved |
| Comfort Recruitment Ltd | 04639566 | 16/01/2003 | Dissolved |
| European Golf Developments Ltd | 04446441 | 24/05/2002 | Dissolved |
| Icon Consultancy Uk Ltd | 06453110 | 13/12/2007 | Dissolved |
| Icon Design Ltd | 05292127 | 16/06/2006 | Dissolved |
| P & D PROPERTY DEVELOPERS LIMITED | 05889980 | 28/07/2006 | Bronze |
| RAIL SAFETY SERVICES (UK) LIMITED | 06335443 | 07/08/2007 | Dissolved |
| Rail Safety Services Ltd | 03209163 | 17/08/2000 | Dissolved |
| SM RAIL CONSULTANCY SERVICES LIMITED | 07089769 | 17/02/2011 | Dissolved |
| TRAINING & SECURITY SOLUTIONS LIMITED | 08409206 | 19/02/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BFG (UK) LIMITED | 07345093 | 13/08/2010 | 14/12/2010 | Dissolved |
| OSBORNE ASSOCIATES CONSULTANCY LIMITED | 07177522 | 14/02/2012 | 30/06/2012 | Dissolved |
| RAILWAY & TUNNELS CONSULTANCY LIMITED | 07044411 | 15/10/2009 | 30/06/2012 | Dissolved |