| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AGGREKO ENERGY SOLUTIONS DEVELOPMENT U.K. LIMITED | 15811684 | 01/07/2024 | Amber |
| AGGREKO ENERGY SOLUTIONS EUROPE LIMITED | 15811435 | 01/07/2024 | Amber |
| INCHINNAN SOLAR LIMITED | 15811671 | 01/07/2024 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| GB DEVELOPERS LIMITED | 04480584 | 03/03/2022 | 30/11/2023 | Silver |
| REPONO HOLDCO 1 LIMITED | 09844502 | 03/03/2022 | 30/11/2023 | Bronze |
| SEMBCORP (WILTON BESS) LIMITED | 15151480 | 20/09/2023 | 30/11/2023 | Bronze |
| SEMBCORP UTILITIES (UK) LIMITED | 04636301 | 03/03/2022 | 30/11/2023 | Silver |
| UK CAPACITY RESERVE LIMITED | 09152381 | 03/03/2022 | 30/11/2023 | Gold |
| UK ENERGY RESERVE LIMITED | 10260309 | 03/03/2022 | 30/11/2023 | Bronze |
| UK POWER RESERVE (ASFORDBY) LIMITED | 07618247 | 03/03/2022 | 30/11/2023 | One Red Flag |
| UK POWER RESERVE (TRUMFLEET) LTD | 07004203 | 03/03/2022 | 30/11/2023 | Bronze |
| UK POWER RESERVE LIMITED | 07385282 | 03/03/2022 | 30/11/2023 | Bronze |
| UK UTILITY RESERVE LIMITED | 11008814 | 03/03/2022 | 30/11/2023 | Silver |
| WILTON ENERGY LIMITED | 04557531 | 29/03/2022 | 30/11/2023 | Bronze |