| Company | Timeline | Status | |
| Alan Oxtoby Limited Director • Director  | 7 May 2013←12 Years→Current  | Active  | |
| Langver Engineering Limited Director • Engineer  | 20 Oct 2004←2 Months→14 Jan 2005  | Active  | |
| Langver Engineering Limited Secretary • Engineer  | 20 Oct 2004←3 Months→27 Jan 2005  | Active  | |
| Langver Limited Director • Production Engineer  | 23 Sep 1994←31 Years→Current  | Active  | |
