| Company | Timeline | Status | |
| DT Fabric Structures Ltd Secretary • Designer | 1 Jul 2007←6 Years→6 Jun 2014 | Dissolved | |
| DT Fabric Structures Ltd Director • Director | 23 Oct 2001←20 Years→8 Feb 2022 | Dissolved | |
| DT Structures Ltd Director • Designer | 5 Mar 2001←21 Years→10 Nov 2022 | Dissolved | |
| DT Structures Ltd Secretary • Designer | 5 Mar 2001←5 Years→30 Oct 2006 | Dissolved | |
| Architen Landrell Limited Director • Exhibition Engineer | 1 Aug 1991←9 Years→18 Mar 2001 | Active | |
| Architen Landrell Limited Secretary • Unreported | 1 Aug 1991←9 Years→1 Aug 2000 | Active | |
| Architen Limited Secretary • Unreported | 31 Dec 1990←9 Years→1 Aug 2000 | Active | |
| Architen Limited Director • Exhibition Engineer | 31 Dec 1990←10 Years→13 Feb 2001 | Active | |
