| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BRITISH ENERGY FINANCE LIMITED | SC173733 | 01/11/2017 | Dissolved |
| BRITISH ENERGY INVESTMENT LIMITED | SC173730 | 01/11/2017 | Dissolved |
| BRITISH ENERGY TECHNICAL SERVICES LIMITED | SC152227 | 01/11/2017 | Dissolved |
| EGGBOROUGH POWER (HOLDINGS) LIMITED | SC201083 | 01/11/2017 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRITISH ENERGY GENERATION (UK) LIMITED | SC117121 | 01/11/2017 | 02/12/2019 | Dissolved |
| BRITISH ENERGY LIMITED | SC162273 | 01/11/2017 | 02/12/2019 | Dissolved |
| BRITISH ENERGY TRUSTEES LIMITED | SC164014 | 05/09/2018 | 02/12/2019 | Dissolved |
| EDF ENERGY (THERMAL GENERATION) LIMITED | 04267569 | 27/11/2018 | 02/12/2019 | Gold |
| EDF ENERGY (TSO) LIMITED | 03432165 | 05/09/2018 | 23/10/2019 | Bronze |
| EDF ENERGY INNOVATION LIMITED | 06999483 | 17/05/2018 | 02/12/2019 | Dissolved |
| EDF ENERGY NUCLEAR GENERATION GROUP LIMITED | SC270184 | 01/11/2017 | 02/12/2019 | Silver |
| EDF ENERGY NUCLEAR GENERATION LIMITED | 03076445 | 26/06/2009 | 02/12/2019 | Silver |
| WEST BURTON PROPERTY LIMITED | 04267566 | 05/09/2018 | 02/12/2019 | Not Trading |