| Company | Timeline | Status | |
| Clancy Consulting Ltd Director • Chartered Engineer | 29 Mar 1999←2 Years→31 Mar 2001 | Active | |
| Appledial Limited Director • Civil Engineer | 29 Sep 1992←14 Years→5 Jun 2007 | Dissolved | |
| Microsoft Structural Control Systems Limited Director • Chartered Engineer | 11 May 1991←8 Years→26 Nov 1999 | Active | |
