| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Advanced Substrates Ltd | SC236667 | 13/03/2003 | Dissolved |
| Ah-So Management Ltd | 05351653 | 03/02/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| SENSOR TECHNOLOGY LIMITED | 01242171 | 31/12/1991 | 01/10/2021 | One Red Flag |
| SURPLUS TEST EQUIPMENT LIMITED | 04239025 | 21/06/2001 | 01/10/2021 | One Red Flag |
| TRANSENSE TECHNOLOGIES PLC | 01885075 | 17/08/1993 | 17/11/2005 | Gold |