| Company | Timeline | Status | |
| Acuity Estates Ltd Director • Engineer | 8 Apr 2011←14 Years→Current | Active | |
| K & L Structures Limited Director • Engineer | 9 Feb 2000←5 Years→21 Apr 2005 | Dissolved | |
Curtis Engineering Limited Director • Engineer | 10 Sep 1991←28 Years→9 Dec 2019 | Dissolved | |
