| Company | Timeline | Status | |
| Auster Housing Limited Secretary • Scientist | 24 Apr 1995←30 Years→Current | Active | |
| Auster Housing Limited Director • Scientist | 24 Apr 1995←17 Years→14 Mar 2013 | Active | |
Defour Services Limited Director • Self Employed | 13 Dec 1994←24 Years→26 Nov 2019 | Dissolved | |
| Nta (1963) Limited Director • Retired | 18 Feb 1992←20 Years→10 Nov 2012 | Active | |
