| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BRIGANTIA CAPITAL LTD | 14959005 | 18/07/2023 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ANTENOVA LIMITED | 03835617 | 28/07/2000 | 27/01/2003 | Bronze |
| CAWOOD SCIENTIFIC LIMITED | 05655711 | 21/09/2007 | 22/05/2009 | Amber |
| COGSWELL & HARRISON LIMITED | 02819542 | 19/05/1993 | 10/09/2009 | Silver |
| H2 GREEN LTD | SC663526 | 07/03/2023 | 15/06/2023 | One Red Flag |
| HARRISON & HUSSEY LIMITED | 01838878 | 19/06/2002 | 10/09/2009 | Silver |
| ITM POWER (RESEARCH) LIMITED | 03973827 | 29/06/2009 | 01/12/2022 | Not Trading |
| ITM POWER (SHELFCO) LIMITED | 08347261 | 04/01/2013 | 01/12/2022 | Not Trading |
| ITM POWER PLC | 05059407 | 29/06/2009 | 01/12/2022 | Amber |
| ITM POWER UK LIMITED | 06156553 | 29/06/2009 | 01/12/2022 | Amber |
| METALYSIS LIMITED | 04304849 | 31/03/2003 | 25/06/2007 | Dissolved |
| MOTIVE FUELS LIMITED | 13290733 | 25/03/2021 | 30/11/2022 | Silver |
| ORKNEY HYDROGEN TRADING LTD | SC516545 | 25/09/2015 | 01/12/2022 | Not Trading |
| RENEWABLE UK ASSOCIATION | 01874667 | 01/09/2021 | 07/06/2023 | Bronze |
| Textore Ltd | 03970012 | 30/11/2000 | 23/01/2002 | Dissolved |
| VANTIX LTD. | 02852569 | 06/08/2007 | 22/05/2009 | Dissolved |