| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CONNICK ENGINEERING LIMITED | 01583885 | 25/10/2024 | Not Trading |
| COULOMB ENERGY SUPPLY LIMITED | 07488842 | 25/10/2024 | Bronze |
| ENERGY24 LIMITED | 05809051 | 25/10/2024 | Bronze |
| ENERGY24 SERVICES LIMITED | 06864372 | 25/10/2024 | Amber |
| FAIRPORT ENGINEERING LIMITED | 06534289 | 25/10/2024 | Silver |
| FAIRPORT PROCESS EQUIPMENT LIMITED | 06988408 | 25/10/2024 | Not Trading |
| FEL HOLDINGS LTD | 10436595 | 25/10/2024 | Bronze |
| ORCHID BIOENERGY GROUP LIMITED | 06544458 | 25/10/2024 | Bronze |
| ORCHID ENVIRONMENTAL LIMITED | 04661314 | 25/10/2024 | Not Trading |
| ORCHID I P LIMITED | 06529101 | 25/10/2024 | Not Trading |
| PX (TGPP) LIMITED | 04416996 | 25/10/2024 | Amber |
| PX AMERICAS HOLDCO LIMITED | 15524377 | 25/10/2024 | Amber |
| PX APPOINTMENTS LIMITED | 04827939 | 25/10/2024 | Not Trading |
| PX ENGINEERING CONSULTANTS LIMITED | 05692095 | 25/10/2024 | Gold |
| PX HOLDINGS LIMITED | 04417010 | 25/10/2024 | Bronze |
| PX LIMITED | 04373756 | 25/10/2024 | Bronze |
| PX LNG TEESSIDE LIMITED | 05807651 | 25/10/2024 | Not Trading |
| PX SUPPLY LIMITED | 10738921 | 25/10/2024 | One Red Flag |
| SALTEND CHEMICALS PARK LIMITED | 10542068 | 25/10/2024 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DERWENT COGENERATION LIMITED | 02650621 | 01/12/2019 | 12/11/2020 | Dissolved |
| GB DEVELOPERS LIMITED | 04480584 | 01/12/2019 | 25/07/2023 | Gold |
| MERSEYSIDE ENERGY RECOVERY HOLDINGS LTD | 07983197 | 22/10/2021 | 31/07/2023 | Silver |
| MERSEYSIDE ENERGY RECOVERY LTD | 08033025 | 22/10/2021 | 31/07/2023 | Silver |
| REPONO HOLDCO 1 LIMITED | 09844502 | 01/12/2019 | 25/07/2023 | Bronze |
| SEMBCORP UTILITIES (UK) LIMITED | 04636301 | 01/12/2019 | 25/07/2023 | Gold |
| UK CAPACITY RESERVE LIMITED | 09152381 | 01/12/2019 | 25/07/2023 | Gold |
| UK ENERGY RESERVE LIMITED | 10260309 | 01/12/2019 | 25/07/2023 | Bronze |
| UK POWER RESERVE (ASFORDBY) LIMITED | 07618247 | 01/12/2019 | 25/07/2023 | Amber |
| UK POWER RESERVE (TRUMFLEET) LTD | 07004203 | 01/12/2019 | 25/07/2023 | Bronze |
| UK POWER RESERVE LIMITED | 07385282 | 01/12/2019 | 25/07/2023 | Bronze |
| UK UTILITY RESERVE LIMITED | 11008814 | 01/12/2019 | 25/07/2023 | Gold |
| WILTON ENERGY LIMITED | 04557531 | 01/12/2019 | 25/07/2023 | Bronze |