| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| * BONNINGTON CASTINGS LIMITED | SC023904 | 30/03/2006 | Dissolved |
| * BONNINGTON CASTINGS LIMITED | SC023904 | 30/03/2006 | Dissolved |
| Balfour Beatty Railpower Ltd | 02067085 | 09/10/2000 | Dissolved |
| Balfour Beatty Railpower Ltd | 02067085 | 20/05/2002 | Dissolved |
| Edgar Allen Developments Ltd | SC247761 | 30/03/2006 | Dissolved |
| Pilgrim Plant Hire Ltd | 01867381 | 01/01/2000 | Dissolved |
| Raynesway Contract Services Ltd | 01634862 | 01/01/2000 | Dissolved |
| Raynesway Plant Ltd | 00727923 | 01/01/2000 | Dissolved |
| TUDOR COURT (TADWORTH PARK) LIMITED | 02157881 | 24/01/2000 | Silver |
| TUDOR COURT (TADWORTH PARK) LIMITED | 02157881 | 29/09/2000 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALSTOM PRODUCT AND SERVICES LIMITED | 05894128 | 12/07/2007 | 31/10/2007 | Bronze |
| BALFOUR BEATTY PLANT & FLEET SERVICES LIMITED | 02449888 | 01/01/2000 | 31/03/2011 | Not Trading |
| BALFOUR BEATTY PLANT & FLEET SERVICES LIMITED | 02449888 | 20/05/2002 | 03/07/2006 | Not Trading |
| BALFOUR BEATTY RAIL CORPORATE SERVICES LIMITED | 03110383 | 01/01/2000 | 31/03/2011 | Not Trading |
| BALFOUR BEATTY RAIL INFRASTRUCTURE SERVICES LIMITED | 00772439 | 01/01/2000 | 01/01/2013 | Not Trading |
| BALFOUR BEATTY RAIL INVESTMENTS LIMITED | 03048949 | 01/01/2000 | 01/01/2013 | Dissolved |
| BALFOUR BEATTY RAIL INVESTMENTS LIMITED | 03048949 | 20/05/2002 | 01/01/2013 | Dissolved |
| BALFOUR BEATTY RAIL LIMITED | 01982627 | 01/01/2000 | 01/01/2013 | Not Trading |
| BALFOUR BEATTY RAIL PROJECTS LIMITED | 00772437 | 01/01/2000 | 01/01/2013 | Not Trading |
| BALFOUR BEATTY RAIL RESIDUARY LIMITED | SC006624 | 30/03/2006 | 01/01/2013 | Not Trading |
| BALFOUR BEATTY RAIL RESIDUARY LIMITED | SC006624 | 17/06/2011 | 01/01/2013 | Not Trading |
| BALFOUR BEATTY RAIL TECHNOLOGIES LIMITED | 00235437 | 01/10/2003 | 01/01/2013 | Not Trading |
| BALFOUR BEATTY RAIL TRACK SYSTEMS LIMITED | 02311350 | 16/05/2005 | 01/01/2013 | Not Trading |
| BALFOUR BEATTY RAIL TRACK SYSTEMS LIMITED | 02311350 | 17/06/2011 | 01/01/2013 | Not Trading |
| DEAN & DYBALL RAIL LIMITED | 05503947 | 08/06/2010 | 01/01/2013 | Dissolved |
| EASTERN INFRASTRUCTURE MAINTENANCE COMPANY LIMITED | 02995393 | 01/01/2000 | 01/01/2013 | Insolvent |
| EASTERN INFRASTRUCTURE MAINTENANCE COMPANY LIMITED | 02995393 | 20/05/2002 | 01/01/2013 | Insolvent |
| EDGAR ALLEN ENGINEERING LIMITED | 00898861 | 30/03/2006 | 01/01/2013 | Insolvent |
| EDGAR ALLEN ENGINEERING LIMITED | 00898861 | 30/03/2006 | 01/01/2013 | Insolvent |
| EIMCO LIMITED | 03159250 | 01/01/2000 | 01/01/2013 | Dissolved |
| EIMCO LIMITED | 03159250 | 20/05/2002 | 01/01/2013 | Dissolved |
| LASER RAIL LTD. | 02423114 | 19/09/2007 | 01/01/2013 | Not Trading |
| NETWORK PLANT (MIDLANDS) LIMITED | 01253354 | 22/12/2004 | 01/01/2013 | Dissolved |
| NETWORK PLANT (MIDLANDS) LIMITED | 01253354 | 17/12/2007 | 01/01/2013 | Dissolved |
| NETWORK PLANT LIMITED | 01126497 | 22/12/2004 | 01/01/2013 | Dissolved |
| NETWORK PLANT LIMITED | 01126497 | 17/12/2007 | 01/01/2013 | Dissolved |
| SEIMCO LIMITED | 03159074 | 01/01/2000 | 01/01/2013 | Dissolved |
| SEIMCO LIMITED | 03159074 | 20/05/2002 | 01/01/2013 | Dissolved |
| SOUTH EAST INFRASTRUCTURE MAINTENANCE COMPANY LIMITED | 02995413 | 01/01/2000 | 31/12/2012 | Dissolved |
| SOUTH EAST INFRASTRUCTURE MAINTENANCE COMPANY LIMITED | 02995413 | 20/05/2002 | 31/12/2012 | Dissolved |
| SOUTHERN TRACK RENEWALS COMPANY LIMITED | 02995436 | 01/01/2000 | 01/01/2013 | Dissolved |
| SOUTHERN TRACK RENEWALS COMPANY LIMITED | 02995436 | 20/05/2002 | 01/01/2013 | Dissolved |