| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Iwl Services Holdings (U.K.) Ltd | 03834139 | 15/04/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FIRST/KEOLIS HOLDINGS LIMITED | 04113984 | 06/07/2010 | 27/11/2014 | Silver |
| FIRST/KEOLIS TRANSPENNINE HOLDINGS LIMITED | 04113990 | 06/07/2010 | 27/11/2014 | Silver |
| FIRST/KEOLIS TRANSPENNINE LIMITED | 04113923 | 06/07/2010 | 04/12/2018 | Bronze |
| GOVIA LIMITED | 03278419 | 20/07/2010 | 11/06/2015 | Amber |
| LOKEGO LIMITED | 07168348 | 12/08/2010 | 12/02/2014 | Dissolved |
| LONDON & BIRMINGHAM RAILWAY LIMITED | 05814584 | 20/07/2010 | 11/06/2015 | Amber |
| LONDON & EAST MIDLANDS RAILWAY LIMITED | 05814586 | 20/07/2010 | 11/06/2015 | Dissolved |
| LONDON & SOUTH EASTERN RAILWAY LIMITED | 04860660 | 20/07/2010 | 11/06/2015 | Amber |
| LONDON AND SOUTH EAST PASSENGER RAIL SERVICES LIMITED | 06537238 | 20/07/2010 | 18/01/2017 | Dissolved |
| LONDON AND WEST MIDLANDS RAILWAY LIMITED | 05537947 | 20/07/2010 | 11/06/2015 | Dissolved |
| NEW SOUTHERN RAILWAY LIMITED | 03010919 | 20/07/2010 | 11/06/2015 | Amber |
| NOTTINGHAM TRAMS LIMITED | 07644670 | 21/07/2011 | 23/03/2018 | Silver |
| SOUTHERN RAILWAY LIMITED | 06574965 | 20/07/2010 | 11/06/2015 | Amber |
| THAMESLINK RAIL LIMITED | 03013232 | 20/07/2010 | 11/06/2015 | Not Trading |