| Company | Timeline | Status | |
| York Gliding Centre Limited Director • Retired | 7 Dec 2008←1 Year→13 Dec 2009 | Active | |
| York Gliding Centre Limited Director • Director & General Manager | 10 Dec 2000←7 Years→9 Dec 2007 | Active | |
| Erebus 1 Limited Director • Director And General Manager | 23 Nov 1991←13 Years→18 Nov 2005 | Dissolved | |
