| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HS1 LIMITED | 03539665 | 17/10/2024 | Amber |
| KEOLIS GO-AHEAD LIMITED | 09116860 | 03/07/2020 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FIRST/KEOLIS TRANSPENNINE LIMITED | 04113923 | 10/03/2020 | 23/08/2024 | Gold |
| GOVIA THAMESLINK RAILWAY LIMITED | 07934306 | 01/07/2022 | 30/08/2024 | One Red Flag |
| KEOLIS (UK) LIMITED | 03292357 | 11/02/2020 | 02/08/2024 | Silver |
| KEOLIS AMEY CONSULTING LIMITED | 13087270 | 03/02/2021 | 19/07/2022 | Amber |
| KEOLIS AMEY DOCKLANDS LIMITED | 09113304 | 12/03/2020 | 25/07/2024 | Bronze |
| KEOLIS AMEY METROLINK LIMITED | 09871073 | 12/03/2020 | 25/07/2024 | One Red Flag |
| KEOLIS AMEY OPERATIONS / GWEITHREDIADAU KEOLIS AMEY LIMITED | 11389531 | 13/10/2021 | 13/08/2024 | Gold |
| KEOLIS AMEY RAIL LIMITED | 11391059 | 21/01/2022 | 13/08/2024 | Bronze |
| NOTTINGHAM TRAMS LIMITED | 07644670 | 19/03/2020 | 02/08/2024 | Gold |