| Company | Timeline | Status | |
| Cowan Brae Flats Management Company Limited Secretary • Retired  | 1 Sep 1994←18 Years→14 Aug 2013  | Active  | |
| Cowan Brae Flats Management Company Limited Director • Retired  | 20 Jun 1993←20 Years→14 Aug 2013  | Active  | |
| Duke Forest Ornaments Limited Secretary • Unreported  | 13 Nov 1992←18 Years→8 Nov 2011  | Dissolved  | |
