| Company | Timeline | Status | |
| Microtone UK Limited Director • Unreported | 16 Nov 2001←24 Years→Current | Active | |
| Microtone UK Limited Director • Piona Tuner | 16 Nov 2001←1 Month→3 Jan 2002 | Active | |
| B Sharp Pianos Limited Director • Unreported | 9 Nov 1999←26 Years→Current | Active | |
