| Company | Timeline | Status | |
| OLD Bull Farm Management Limited Director • Retired Teacher | 11 Apr 2007←1 Year 8 Months→10 Dec 2008 | Active | |
| OLD Bull Farm Management Limited Secretary • Retired Teacher | 11 Apr 2007←1 Year 8 Months→10 Dec 2008 | Active | |
| Alexander Whiting & Company Limited Secretary • Unreported | 4 Apr 2003←18 Years→22 Jun 2021 | Dissolved | |
