| Company | Timeline | Status | |
| Keep Residents Association Limited(The) Director • Architect (retired) | 22 Apr 2012←2 Years→28 Apr 2014 | Active | |
| Carston Freeholds Limited Director • Architect | 1 Aug 2002←2 Years 10 Months→20 Jun 2005 | Active | |
| Keep Residents Association Limited(The) Director • Arhcitect | 17 Jun 1992←2 Years 11 Months→13 May 1995 | Active | |
