| Company | Timeline | Status | |
| Interscience Fire Laboratory Limited Director • Director | 26 May 2016←9 Years→Current | Active | |
| Grayson Franks Ltd Director • Director | 25 May 2012←13 Years→Current | Active | |
| Stanton Redcroft Limited Director • Chemist | 26 Jun 1998←7 Years→22 Mar 2006 | Active | |
| Fire Testing Technology Limited Director • Director | 1 Apr 1994←31 Years→Current | Active | |
| Fire Testing Technology Limited Director • Director | 22 May 1991←1 Year 10 Months→3 Apr 1993 | Active | |
| Interscience Communications Ltd Director • Scientific Consultant | 14 Mar 1991←34 Years→Current | Active | |
