| Company | Timeline | Status | |
| Acoustic Tools Ltd Director • Acoustic Consultant | 1 Feb 2016←2 Years 2 Months→30 Apr 2018 | Active | |
| Black Art Acoustics Ltd Director • Acoustic Consultant | 20 Aug 2010←7 Years→30 Apr 2018 | Active | |
| Soundspec Limited Director • Acoustic Consultant | 9 Jul 2008←9 Years→30 Apr 2018 | Active | |
