| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 4247 LIMITED | 02493942 | 19/04/1992 | Silver |
| ANGLESEY ALUMINIUM LIMITED | 00900262 | 09/04/2014 | Dissolved |
| BRITISH ALCAN OVERSEAS INVESTMENTS LIMITED | 00799719 | 24/07/2013 | Dissolved |
| CRIMSON LAKE ANCILLARY SERVICE PROVIDERS LIMITED | 11848840 | 26/02/2019 | Gold |
| KENPAK (EUROPE) LIMITED | 03353717 | 24/07/2013 | Dissolved |
| PECHINEY HOLDINGS UK LIMITED | 01113887 | 24/07/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALCAN CHEMICALS LIMITED | 00336873 | 24/07/2013 | 30/11/2018 | Not Trading |
| ALCAN FARMS LIMITED | 01086684 | 01/07/2014 | 30/11/2018 | Not Trading |
| ANGLESEY ALUMINIUM METAL LIMITED | 00909645 | 09/04/2014 | 30/11/2018 | Gold |
| BRITISH ALCAN ALUMINIUM LIMITED | 00385816 | 13/01/2014 | 30/11/2018 | Silver |
| LAWSON MARDON FLEXIBLE LIMITED | 00459767 | 24/07/2013 | 30/11/2018 | Not Trading |
| LAWSON MARDON SMITH BROTHERS LTD. | 00067341 | 24/07/2013 | 30/11/2018 | Not Trading |
| ORTHIOS POWER (ANGLESEY) LIMITED | 06983862 | 09/04/2014 | 24/12/2015 | Insolvent |
| PECHINEY AVIATUBE LIMITED | 04124570 | 24/07/2013 | 30/11/2018 | Amber |
| SIMEC LOCHABER HYDROPOWER 2 LIMITED | 00750143 | 13/01/2014 | 16/12/2016 | Bronze |
| TBAC LIMITED | 00108758 | 24/07/2013 | 30/11/2018 | Not Trading |