| Company | Timeline | Status | |
| Jon Warwick Ltd Director • Commercial Pilot Doctor | 1 Nov 2007←18 Years→Current | Active | |
| Jon Warwick Ltd Secretary • Doctor | 1 Nov 2007←18 Years→Current | Active | |
Propellerhead Aviation Limited Director • Doctor | 17 Oct 2003←3 Years→11 Jul 2007 | Dissolved | |
