| Company | Timeline | Status | |
| Square Circle (UK) Limited Director • Scientific Officer | 14 Apr 1993←1 Year 7 Months→8 Dec 1994 | Active | |
| Square Circle (UK) Limited Secretary • Scientific Officer | 14 Apr 1993←19 Years→7 May 2012 | Active | |
| V & L (Residents) Management Limited Director • Scientific Officer | 26 Nov 1992←8 Months→1 Aug 1993 | Active | |
