| Company | Timeline | Status | |
| Dustbits.Com Limited Director • Technical Director | 22 Nov 2011←7 Years→24 Apr 2019 | Active | |
| Filter Designs Ltd Director • Company Director | 29 Jan 2001←20 Years→21 Oct 2021 | In Administration | |
| Lodge Cottrell Ltd Director • Technical Director | 10 Mar 1999←1 Year 10 Months→31 Jan 2001 | Liquidation | |
| Environmental Air Filtration Limited Director • Company Director | 31 Jan 1991←10 Years→31 Jan 2001 | Active | |
