| Company | Timeline | Status | |
Specialised Investments Limited Director • Director | 1 Nov 2012←2 Years 9 Months→18 Aug 2015 | Dissolved | |
| Acoustic Calibration Services Limited Director • Acoustic Engineer | 2 Mar 2001←1 Year→12 Mar 2002 | Active | |
| Acoustic Calibration Services Limited Secretary • Acoustic Engineer | 2 Mar 2001←1 Year→12 Mar 2002 | Active | |
