| Company | Timeline | Status | |
| Milton Keynes Chinese School & Community Centre Director • Company Director | 20 May 2007←2 Years 10 Months→28 Mar 2010 | Active | |
| Milton Keynes Chinese School & Community Centre Director • Chartered Structural & Civil E | 3 Jul 2000←4 Years→21 Nov 2004 | Active | |
| William Lai Consulting Engineers Limited Director • Unreported | 20 Sep 1996←29 Years→Current | Active | |
