| Company | Timeline | Status | |
| Scientific Management Associates (Properties) Limited Director • Engineer  | 7 Dec 2015←4 Years→25 Jul 2020  | Active  | |
Ecm2 Ltd Director • Co Director  | 10 Jan 2005←11 Years→19 Apr 2016  | Dissolved  | |
| Scientific Management International Limited Director • Engineer  | 23 Nov 1992←24 Years→16 May 2017  | Active  | |
