| Company | Timeline | Status | |
| AHM Technologies Limited Director • Consulting Engineer | 24 Mar 2014←11 Years→Current | Active | |
AHM Schlegel Limited Director • Consulting Engineer | 17 Jun 2011←3 Years→15 Jul 2014 | Dissolved | |
| Associated Building Design Limited Director • Engineering Consultant | 10 Sep 1991←33 Years→10 Dec 2024 | Dissolved | |
| Associated Building Maintenance Limited Director • Engineering Consultant | 28 Jun 1991←34 Years→Current | Active | |
| Associated Building Maintenance Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
