| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| GREAT BRITISH RAILWAYS CONSULTING LIMITED | 08225646 | 20/10/2014 | Amber |
| KEW BRIDGE MANCO LIMITED | 09404057 | 23/01/2015 | Amber |
| NETWORK RAIL (HIGH SPEED) LIMITED | 04434562 | 20/10/2014 | Silver |
| NETWORK RAIL (SPACIA) LIMITED | 03881191 | 20/10/2014 | Silver |
| NETWORK RAIL (STATIONS) LIMITED | 02938983 | 20/10/2014 | Silver |
| NETWORK RAIL (VY1) LIMITED | 08470403 | 20/10/2014 | One Red Flag |
| NETWORK RAIL (VY2) LIMITED | 08470404 | 20/10/2014 | One Red Flag |
| NETWORK RAIL CERTIFICATION BODY LIMITED | 07885266 | 20/10/2014 | Silver |
| NETWORK RAIL CONSULTING LIMITED | 08071984 | 20/10/2014 | Bronze |
| NETWORK RAIL DEVELOPMENT LIMITED | 06569617 | 20/10/2014 | One Red Flag |
| NETWORK RAIL HOLDCO LIMITED | 04423711 | 20/10/2014 | Silver |
| NETWORK RAIL INFRASTRUCTURE FINANCE PLC | 05090412 | 20/10/2014 | Silver |
| NETWORK RAIL INTERNATIONAL LIMITED | 02938978 | 20/10/2014 | Bronze |
| NETWORK RAIL MTN FINANCE LIMITED | 04864307 | 20/10/2014 | Silver |
| NETWORK RAIL PENSION TRUSTEE LIMITED | 05067789 | 20/10/2014 | Amber |
| NETWORK RAIL PROPERTY LIMITED | 10096751 | 01/04/2016 | Bronze |
| RAILWAY PROPERTY LIMITED | 04133605 | 20/10/2014 | Silver |
| RAILWAY SAFETY | 03937800 | 20/10/2014 | One Red Flag |
| RAILWAY SAFETY & STANDARDS | 03937795 | 20/10/2014 | Amber |
| SPACIA (2002) LIMITED | 04377629 | 20/10/2014 | Silver |
| VICTORIA PLACE SHOPPING CENTRE LIMITED | 06363713 | 20/10/2014 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|