| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| EPI HOLDINGS LIMITED | 03170421 | 10/01/2022 | 28/10/2024 | Gold |
| IQE (EUROPE) LIMITED | 02107558 | 10/01/2022 | 28/10/2024 | Bronze |
| IQE PLC | 03745726 | 10/01/2022 | 28/10/2024 | Amber |
| IQE SILICON COMPOUNDS LIMITED | 03986643 | 10/01/2022 | 28/10/2024 | One Red Flag |
| NANOGAN LIMITED | 06185471 | 10/01/2022 | 28/10/2024 | Gold |
| WAFER TECHNOLOGY INTERNATIONAL LIMITED | 02928144 | 10/01/2022 | 28/10/2024 | Gold |
| WAFER TECHNOLOGY LIMITED | 01829722 | 10/01/2022 | 28/10/2024 | Silver |