| Company | Timeline | Status | |
| Celef Audio International Limited Director • Married Woman | 14 Jun 1991←34 Years→Current | Active | |
| Professional Acoustics Limited Director • Loudspeaker Manufacturer/director | 31 Dec 1990←35 Years→Current | Active | |
| Proac Limited Director • Loudspeaker Manufacturer/director | 31 Dec 1990←35 Years→Current | Active | |
