| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A M RAIL GROUP LIMITED | 09514845 | 24/05/2022 | Insolvent |
| A M SIGNALLING DESIGN LIMITED | 08042265 | 24/05/2022 | Insolvent |
| BEARWARD ENGINEERING LIMITED | 01590082 | 08/10/2022 | Insolvent |
| BOMBARDIER TRANSPORTATION (PROJECTS) UK LIMITED | 04433533 | 24/10/2016 | Dissolved |
| BRECKNELL, WILLIS & CO. LIMITED | 00306444 | 08/10/2022 | Insolvent |
| CLASS 345 TRAINS LIMITED | 00653221 | 24/10/2016 | Dissolved |
| COLEMAN HYDRAULICS LIMITED | 05222184 | 24/05/2022 | Dissolved |
| G J MOWBRAY CONSULTING LTD | 12239456 | 02/10/2019 | Not Trading |
| KEELEX 351 LIMITED | 07209033 | 08/10/2022 | Insolvent |
| L H ACCESS TECHNOLOGY LIMITED | 04630534 | 24/05/2022 | Dissolved |
| L H GROUP WHEELSETS LIMITED | 04452814 | 24/05/2022 | Dissolved |
| MORS SMITT UK LTD | 03280530 | 01/11/2022 | Insolvent |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALSTOM (LITCHURCH) LIMITED | 01712661 | 24/10/2016 | 31/07/2019 | Silver |
| ALSTOM TRANSPORTATION (GLOBAL HOLDING) UK LIMITED | 09862744 | 08/11/2016 | 22/07/2019 | Gold |
| BEARWARD ENGINEERING LIMITED | 01590082 | 20/06/2022 | 03/10/2022 | Insolvent |
| BOMBARDIER TRANSPORTATION (GAUTRAIN) UK LIMITED | 03138093 | 24/10/2016 | 31/07/2019 | Dissolved |
| BOMBARDIER TRANSPORTATION (SIGNAL) UK LTD | 03062720 | 24/10/2016 | 31/07/2019 | Dissolved |
| BOMBARDIER UK HOLDING LIMITED | 09740653 | 04/11/2016 | 22/07/2019 | Amber |
| BRECKNELL, WILLIS & CO. LIMITED | 00306444 | 24/05/2022 | 03/10/2022 | Insolvent |
| CROSSFLEET LIMITED | 03614181 | 24/10/2016 | 31/07/2019 | Bronze |
| FAIVELEY TRANSPORT BIRKENHEAD LIMITED | 01841352 | 24/05/2022 | 24/07/2023 | Bronze |
| FAIVELEY TRANSPORT TAMWORTH LTD | 02851510 | 24/05/2022 | 24/07/2023 | Amber |
| INFRASIG LIMITED | 08018007 | 19/04/2018 | 31/07/2019 | Gold |
| KEELEX 351 LIMITED | 07209033 | 24/05/2022 | 03/10/2022 | Insolvent |
| L H GROUP SERVICES LIMITED | 01394005 | 24/05/2022 | 03/10/2022 | Insolvent |
| MORS SMITT UK LTD | 03280530 | 24/05/2022 | 08/10/2022 | Insolvent |
| NAPIER TURBOCHARGERS LIMITED | 06512358 | 24/05/2022 | 24/07/2023 | Insolvent |
| PARTS SUPPLY LIMITED | 02518305 | 24/05/2022 | 22/08/2022 | Insolvent |
| PRORAIL LIMITED | 01314819 | 24/10/2016 | 31/07/2019 | Amber |
| SAB WABCO (INVESTMENTS) LIMITED | 02512297 | 08/10/2022 | 23/01/2023 | Insolvent |
| SAB WABCO (UK) LIMITED | 02484848 | 24/05/2022 | 03/10/2022 | Insolvent |
| SCT EUROPE LTD | 05432280 | 24/05/2022 | 22/08/2022 | Insolvent |
| SETML TRANSPORTATION LIMITED | 03138390 | 24/10/2016 | 31/07/2019 | Dissolved |
| SOUTH EASTERN TRAIN MAINTENANCE LIMITED | 03341029 | 24/10/2016 | 31/07/2019 | Not Trading |
| VAPOR RICON EUROPE LTD | 01074541 | 24/05/2022 | 22/08/2022 | Insolvent |
| WABTEC UK LIMITED | 02923485 | 24/05/2022 | 24/07/2023 | Bronze |