| Company | Timeline | Status | |
| Arke Ltd Director • Management Consultant | 20 Feb 2006←13 Years→17 May 2019 | Active | |
| Arke Ltd Secretary • Management Consultant | 20 Feb 2006←6 Years→14 Dec 2012 | Active | |
Bertram Martin Consulting Limited Director • Engineering Consultant | 17 Jun 1998←5 Years→31 Mar 2004 | Dissolved | |
