| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AFFINITY WATER CAPITAL FUNDS LIMITED | 02630142 | 24/11/2021 | Gold |
| AFFINITY WATER FINANCE (2004) PLC | 05139236 | 01/04/2022 | Silver |
| AFFINITY WATER FINANCE PLC | 11674789 | 01/04/2022 | Silver |
| AFFINITY WATER HOLDCO FINANCE LIMITED | 10954556 | 24/11/2021 | Amber |
| AFFINITY WATER HOLDINGS LIMITED | 08350099 | 24/11/2021 | Gold |
| AFFINITY WATER LIMITED | 02546950 | 01/04/2022 | Amber |
| BETJEMAN HOLDINGS JVCO LIMITED | 10851599 | 10/03/2022 | Amber |
| BETJEMAN HOLDINGS LIMITED | 10852384 | 10/03/2022 | Amber |
| BETJEMAN HOLDINGS MIDCO LIMITED | 10851742 | 10/03/2022 | Silver |
| CTRL (UK) LIMITED | 03578740 | 10/03/2022 | Not Trading |
| DAIWATER INVESTMENT LIMITED | 10738347 | 24/11/2021 | Amber |
| HELIX ACQUISITION LIMITED | 07428859 | 01/07/2022 | Amber |
| HELIX BUFFERCO LIMITED | 07428829 | 01/07/2022 | Silver |
| HELIX MIDCO LIMITED | 07428762 | 01/07/2022 | Silver |
| HIGH SPEED ONE (HS1) LIMITED | 06045862 | 10/03/2022 | Not Trading |
| HIGH SPEED RAIL FINANCE (1) PLC | 08346271 | 10/03/2022 | Bronze |
| HIGH SPEED RAIL FINANCE PLC | 08196684 | 10/03/2022 | Bronze |
| HS1 LIMITED | 03539665 | 10/03/2022 | Amber |
| METIER HEALTHCARE LIMITED | 03302891 | 28/03/2024 | Bronze |
| METIER HOLDINGS LIMITED | 03672924 | 28/03/2024 | Bronze |
| QAH GROUP LIMITED | 14002566 | 24/07/2023 | Silver |
| THE HOSPITAL COMPANY (QAH PORTSMOUTH) HOLDINGS LIMITED | 05440243 | 10/07/2023 | Silver |
| THE HOSPITAL COMPANY (QAH PORTSMOUTH) LIMITED | 05439918 | 10/07/2023 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| KELDA EUROBOND CO LIMITED | 06433768 | 31/01/2013 | 27/10/2021 | Silver |
| YORKSHIRE WATER SERVICES LIMITED | 02366682 | 13/09/2017 | 27/10/2021 | Silver |