| Company | Timeline | Status | |
Gap Mechanical Consultancy Limited Director • Engineer | 2 Jul 2012←2 Years 4 Months→25 Nov 2014 | Dissolved | |
| A.T.Marston & Co.,Limited Director • Engineer | 18 Mar 1991←34 Years→Current | Liquidation | |
| A.T.Marston & Co.,Limited Secretary • Unreported | 18 Mar 1991←34 Years→Current | Liquidation | |
