| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BEACON MIDCO LIMITED | 12327671 | 21/11/2019 | Silver |
| BEACON TOPCO LIMITED | 12327609 | 21/11/2019 | Bronze |
| HIGHLAND TRANSMISSION BIDCO LIMITED | 14432763 | 20/10/2022 | Silver |
| HIGHLAND TRANSMISSION HOLDING LIMITED | 13908000 | 14/10/2022 | Silver |
| ONTARIO AIRPORTS INVESTMENTS LIMITED | 07002858 | 16/04/2015 | Gold |
| TITAN UK BIDCO LIMITED | 13015661 | 26/01/2021 | Bronze |
| TITAN UK HOLDCO LIMITED | 13012586 | 26/01/2021 | Bronze |
| UK AIRPORTS MIDCO LIMITED | 10912604 | 11/08/2017 | Silver |
| UK AIRPORTS TOPCO LIMITED | 10912204 | 11/08/2017 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| SAUNA UK BIDCO LIMITED | 12423732 | 24/01/2020 | 03/10/2024 | Silver |
| SAUNA UK HOLDCO LIMITED | 12422515 | 24/01/2020 | 03/10/2024 | Bronze |