| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ENSCO DEEPWATER DRILLING LIMITED | 08524375 | 31/07/2019 | Bronze |
| ENSCO GLOBAL LIMITED | FC030548 | 31/07/2019 | One Red Flag |
| ENSCO HOLDCO LIMITED | 06962983 | 01/12/2019 | Silver |
| ENSCO OFFSHORE U.K. LIMITED | 02868165 | 31/07/2019 | Gold |
| ENSCO SERVICES LIMITED | 04605864 | 31/07/2019 | Bronze |
| ENSCO U.K. LIMITED | 04550389 | 31/07/2019 | Bronze |
| ENSCO UK DRILLING LIMITED | 10987413 | 31/07/2019 | Amber |
| ROWAN COMPANIES, LLC | FC037725 | 14/11/2020 | Bronze |
| STEP CHANGE IN SAFETY LIMITED | SC493448 | 28/11/2019 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ENSCO GLOBAL RESOURCES LIMITED | 07098531 | 31/07/2019 | 08/07/2022 | Dissolved |
| ENSCO UNIVERSAL LIMITED | 07098508 | 29/08/2019 | 30/06/2022 | Silver |
| ROWAN COMPANIES LIMITED | 07805263 | 03/09/2021 | 08/07/2022 | Dissolved |
| ROWAN NO.1 LIMITED | 08026104 | 15/06/2019 | 17/03/2023 | Dissolved |
| ROWAN NO.2 LIMITED | 08026111 | 15/06/2019 | 08/07/2022 | Dissolved |
| THE UK OFFSHORE ENERGIES ASSOCIATION LIMITED | 01119804 | 12/05/2016 | 10/06/2021 | Bronze |