| Company | Timeline | Status | |
| Sci Business Limited Director • Food Scientist | 13 Jan 1995←3 Years→24 Apr 1998 | Active | |
| Contract Technology Limited Director • Research Chemist (retired) | 31 Jan 1991←35 Years→Current | Active | |
| Contract Technology Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
