| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALCAN CHEMICALS LIMITED | 00336873 | 25/03/2024 | Not Trading |
| ALCAN FARMS LIMITED | 01086684 | 25/03/2024 | Not Trading |
| ANGLESEY ALUMINIUM METAL LIMITED | 00909645 | 25/03/2024 | Gold |
| BRITISH ALCAN ALUMINIUM LIMITED | 00385816 | 25/03/2024 | Silver |
| IOC SALES LIMITED | 11576814 | 25/03/2024 | Bronze |
| LAWSON MARDON FLEXIBLE LIMITED | 00459767 | 25/03/2024 | Not Trading |
| LAWSON MARDON SMITH BROTHERS LTD. | 00067341 | 25/03/2024 | Not Trading |
| PECHINEY AVIATUBE LIMITED | 04124570 | 25/03/2024 | Amber |
| RIO TINTO BM LIMITED | 16001765 | 07/10/2024 | Amber |
| RIO TINTO BM SUBSIDIARY LIMITED | 16003844 | 08/10/2024 | Amber |
| RIO TINTO COPPER HOLDINGS LIMITED | 14549568 | 12/02/2024 | Silver |
| RIO TINTO COPPER LIMITED | 15070996 | 12/02/2024 | Bronze |
| RIO TINTO INDONESIAN HOLDINGS LIMITED | 03074852 | 12/02/2024 | Gold |
| RIO TINTO IRON & TITANIUM LIMITED | 02796146 | 25/03/2024 | Gold |
| RIO TINTO IRON ORE TRADING CHINA LIMITED | 08651526 | 25/03/2024 | Gold |
| RIO TINTO MEDICAL PLAN TRUSTEES LIMITED | 03230372 | 25/03/2024 | Not Trading |
| RIO TINTO MINERALS LIMITED | 13807147 | 25/03/2024 | Bronze |
| RIO TINTO SECRETARIAT LIMITED | 10754108 | 11/11/2019 | Not Trading |
| RIO TINTO SIMFER UK LIMITED | 06375648 | 25/03/2024 | Amber |
| RIO TINTO SOUTH EAST ASIA LIMITED | 03699290 | 25/03/2024 | Bronze |
| RIO TINTO TECHNOLOGICAL RESOURCES UK LIMITED | 08270236 | 25/03/2024 | Gold |
| RIO TINTO WESTERN HOLDINGS LIMITED | 00007132 | 25/03/2024 | Gold |
| TBAC LIMITED | 00108758 | 25/03/2024 | Not Trading |
| THOS W WARD LIMITED | 00081020 | 25/03/2024 | Gold |
| THR COPPER LIMITED | 15130606 | 25/03/2024 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|