| Company | Timeline | Status | |
| Heap Economiser Limited Director • Unreported | 26 Jul 1996←29 Years→Current | Active | |
| Heap Dawson Limited Director • Company Director | 12 Feb 1996←29 Years→Current | Active | |
| McKenzie-Martin Limited Director • Director | 5 Mar 1992←3 Years→12 Jan 1996 | Active | |
