| Company | Timeline | Status | |
Geoarchitecture Limited Director • Designer | 18 Oct 2011←3 Years→21 Oct 2014 | Dissolved | |
| Geosail Ltd Director • Designer | 9 Aug 2011←14 Years→Current | Active | |
| David Parker Architects Ltd Director • Director | 21 Jan 2002←4 Years→4 Sep 2006 | Active | |
