| Company | Timeline | Status | |
| The Engineered ARCH Company Limited Director • None | 12 Mar 2014←8 Years→15 Oct 2022 | Dissolved | |
| Soo Cool Ltd Secretary • Consulting Structural Engineer | 15 Jan 2004←11 Years→20 Aug 2015 | Active | |
| Bill Harvey Associates Limited Director • Director | 1 Oct 2002←20 Years→15 Oct 2022 | Active | |
| Obvis Limited Director • Civil & Structural Engineer | 9 Mar 2000←22 Years→15 Oct 2022 | Active | |
