| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| NIEUWEWIND HOLDCO LIMITED | 11868153 | 07/03/2019 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BILBAO OFFSHORE HOLDING LIMITED | 12099853 | 28/12/2020 | 20/12/2024 | One Red Flag |
| BILBAO OFFSHORE INVESTMENT LIMITED | 12097709 | 28/12/2020 | 20/12/2024 | One Red Flag |
| BILBAO OFFSHORE TOPCO LIMITED | 12095099 | 28/12/2020 | 20/12/2024 | Bronze |
| BRIGADEIRO HOLDINGS LIMITED | 14551448 | 20/12/2022 | 20/12/2024 | N/A |
| CORIO GENERATION INTERNATIONAL LIMITED | 13805252 | 09/09/2024 | 20/12/2024 | One Red Flag |
| EAST ANGLIA ONE LIMITED | 07366753 | 21/12/2020 | 25/02/2025 | Bronze |
| GALLOPER EXTENSION INVESTCO LIMITED | 12412596 | 01/02/2022 | 02/09/2024 | Amber |
| GALLOPER EXTENSION INVESTCO PARENT LIMITED | 12408293 | 01/02/2022 | 02/09/2024 | Amber |
| GIG OSW INVESTMENTS APPOINTER LIMITED | 14043915 | 13/04/2022 | 20/12/2024 | Not Trading |
| GREAT EASTERN OFFSHORE WIND FARM UK HOLDCO LIMITED | 14523174 | 05/12/2022 | 20/12/2024 | N/A |
| GT R4 HOLDINGS LIMITED | 13272588 | 13/08/2021 | 02/03/2023 | Bronze |
| GT R4 LIMITED | 13281221 | 13/08/2021 | 02/03/2023 | Bronze |
| INIS HOLDING COMPANY LIMITED | 13426129 | 28/05/2021 | 20/12/2024 | Bronze |
| INIS TOP COMPANY LIMITED | 13413233 | 21/05/2021 | 20/12/2024 | Bronze |
| KUSTEN OFFSHORE HOLDING COMPANY LIMITED | 13621736 | 14/09/2021 | 20/12/2024 | One Red Flag |
| LOCHLANN HOLDCO LIMITED | SC703990 | 08/06/2023 | 20/12/2024 | Amber |
| MARYLAND HOLDCO LIMITED | 13262637 | 25/08/2021 | 20/12/2024 | Amber |
| MARYLAND INVESTCO LIMITED | 13744006 | 15/11/2021 | 20/12/2024 | One Red Flag |
| MARYLAND TOPCO LIMITED | 13743697 | 15/11/2021 | 20/12/2024 | Silver |
| OSW INVESTMENTS GALLOPER JVCO (UK) LIMITED | 14043856 | 13/04/2022 | 20/12/2024 | Bronze |
| OSW INVESTMENTS JAPAN JVCO 2 LIMITED | 14044571 | 13/04/2022 | 20/12/2024 | Not Trading |
| OSW INVESTMENTS KOREAN JVCO 1 LIMITED | 14045792 | 13/04/2022 | 20/12/2024 | N/A |
| OSW INVESTMENTS KOREAN JVCO 2 LIMITED | 14044316 | 13/04/2022 | 20/12/2024 | N/A |
| OSW INVESTMENTS KOREAN JVCO 3 LIMITED | 14045466 | 13/04/2022 | 20/12/2024 | N/A |
| OSW INVESTMENTS KOREAN JVCO 4 LIMITED | 14045222 | 13/04/2022 | 20/12/2024 | N/A |
| OSW INVESTMENTS KOREAN JVCO 5 LIMITED | 14046991 | 14/04/2022 | 20/12/2024 | N/A |
| OSW INVESTMENTS R4 JVCO (UK) LIMITED | 14043366 | 12/04/2022 | 20/12/2024 | Not Trading |
| OSW INVESTMENTS RAMPION JVCO (UK) LIMITED | 14043860 | 13/04/2022 | 20/12/2024 | Silver |
| OSW INVESTMENTS TAIWAN JVCO 1 LIMITED | 13794983 | 11/11/2022 | 20/12/2024 | N/A |
| OSW INVESTMENTS TAIWAN JVCO 2 LIMITED | 13796726 | 11/11/2022 | 20/12/2024 | N/A |
| OSW INVESTMENTS TAIWAN JVCO 3 LIMITED | 13797421 | 11/11/2022 | 20/12/2024 | N/A |
| PHILIPPINES OSW INVESTMENTS LIMITED | 13843650 | 31/05/2022 | 20/12/2024 | N/A |
| SOUTHERN OCEAN OFFSHORE WIND UK HOLDCO LIMITED | 13843476 | 13/07/2023 | 20/12/2024 | N/A |
| VATTENFALL WIND POWER LTD | 06205750 | 06/04/2016 | 01/07/2017 | Gold |
| WMR JV HOLDCO LIMITED | 08921440 | 19/11/2018 | 16/08/2020 | Silver |
| WMR JV INVESTCO LIMITED | 08921584 | 19/11/2018 | 16/08/2020 | Silver |
| YOUNG OSW JVCO LIMITED | 14044244 | 13/04/2022 | 20/12/2024 | Not Trading |