| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CATS NORTH SEA LIMITED | 09250798 | 17/12/2015 | 30/06/2024 | Bronze |
| H2NE PARENTCO LIMITED | 14538885 | 13/12/2022 | 30/06/2024 | Gold |
| H2NORTHEAST LIMITED | 14538969 | 13/12/2022 | 30/06/2024 | Bronze |
| HGS PARENTCO LIMITED | 11110455 | 13/12/2017 | 30/06/2024 | One Red Flag |
| HUMBER GATHERING SYSTEM LIMITED | 11110577 | 13/12/2017 | 30/06/2024 | One Red Flag |
| KELLAS CATS LIMITED | 08021886 | 17/12/2015 | 30/06/2024 | Silver |
| KELLAS GROUP FINANCE LIMITED | 11788901 | 25/01/2019 | 30/06/2024 | Bronze |
| KELLAS GROUP HOLDINGS LIMITED | 11788800 | 25/01/2019 | 30/06/2024 | Silver |
| KELLAS HYDROGEN LIMITED | 14538807 | 13/12/2022 | 30/06/2024 | Bronze |
| KELLAS MIDSTREAM LIMITED | 09048880 | 17/12/2015 | 30/06/2024 | Amber |
| KELLAS NORTH SEA 1 LIMITED | 10778184 | 18/05/2017 | 30/06/2024 | Amber |
| KELLAS NORTH SEA 2 LIMITED | 10778448 | 18/05/2017 | 30/06/2024 | Silver |
| KELLAS TOPCO LIMITED | 09048713 | 15/03/2019 | 30/06/2024 | Gold |