| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| COVANTA ENERGY (UK) LIMITED | 06087526 | 28/06/2012 | Dissolved |
| COVANTA HOLDING LIMITED | 06006368 | 28/06/2012 | Dissolved |
| COVANTA INCE PARK LIMITED | 07246720 | 14/11/2013 | Dissolved |
| COVANTA UK OPERATIONS LIMITED | 07261947 | 14/11/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| EARLS GATE ENERGY CENTRE LIMITED | SC484891 | 18/12/2018 | 28/06/2022 | Bronze |
| EGEC HOLDINGS LIMITED | SC517944 | 18/12/2018 | 28/06/2022 | Bronze |
| ENCYCLIS EARLS GATE HOLDCO LIMITED | 11642671 | 25/10/2018 | 21/06/2022 | One Red Flag |
| ENCYCLIS LIMITED | 05845046 | 28/06/2012 | 21/06/2022 | Silver |
| ENCYCLIS NEWHURST HOLDCO LIMITED | 12185337 | 02/09/2019 | 21/06/2022 | Amber |
| ENCYCLIS PROTOS HOLDCO LIMITED | 11915696 | 30/03/2019 | 21/06/2022 | Bronze |
| ENCYCLIS ROOKERY HOLDCO LIMITED | 11347927 | 06/05/2018 | 21/06/2022 | Silver |
| ENCYCLIS UK INVESTMENTS LIMITED | 11347827 | 06/05/2018 | 21/06/2022 | Silver |
| NEWHURST ERF HOLDING LIMITED | 11998817 | 05/02/2020 | 21/06/2022 | Silver |
| NEWHURST ERF LIMITED | 12006738 | 05/02/2020 | 21/06/2022 | Silver |
| PROTOS ERF LIMITED | 11922737 | 03/04/2019 | 21/06/2022 | Amber |
| PROTOS HOLDING LIMITED | 11920987 | 02/04/2019 | 21/06/2022 | Bronze |
| RBWM COMMERCIAL SERVICES LIMITED | 07432503 | 14/11/2013 | 11/02/2014 | Dissolved |
| ROOKERY SOUTH HOLDING LIMITED | 11347953 | 06/05/2018 | 21/06/2022 | Amber |
| ROOKERY SOUTH LIMITED | 07094843 | 14/11/2013 | 21/06/2022 | Bronze |