| Company | Timeline | Status | |
| Identifont Limited Director • Director | 10 Oct 2018←7 Years→Current | Active | |
Fontifier Limited Director • Computer Consultant | 4 Feb 2004←11 Years→21 Jul 2015 | Dissolved | |
Identifont Limited Director • Computer Consultant | 15 Jan 2003←12 Years→21 Jul 2015 | Dissolved | |
| Human-Computer Interface Limited Director • Computer Consultant | 31 Mar 1992←33 Years→Current | Active | |
