| Company | Timeline | Status | |
| Opsitek Limited Director • Secretary | 19 Jun 2011←1 Day→19 Jun 2011 | Dissolved | |
| Prescription Footwear Associates Limited Director • Unreported | 10 Feb 2007←18 Years→Current | Active | |
| Opsitek Limited Secretary • Unreported | 20 Jun 2003←17 Years→12 Jan 2021 | Dissolved | |
| Sensor Shoes Limited Secretary • Unreported | 28 Dec 2001←23 Years→Current | Active | |
Products & Research In Science & Medicine Limited Secretary • Unreported | 4 Jan 2001←19 Years→11 Feb 2020 | Dissolved | |
| Prescription Footwear Associates Limited Secretary • Unreported | 8 Jun 1998←27 Years→Current | Active | |
| Prescription Footwear Associates Limited Director • Director/secretary | 8 Jun 1998←3 Years→15 Jul 2001 | Active | |
| Prescription Footwear Associates Limited Secretary • Director | 29 Feb 1996←1 Year 5 Months→31 Jul 1997 | Active | |
| Prescription Footwear Associates Limited Director • Director | 29 Feb 1996←9 Months→1 Dec 1996 | Active | |
