| Company | Timeline | Status | |
| Sherburn Aero Club Limited Director • Company Director  | 6 Apr 2001←1 Year 7 Months→28 Nov 2002  | Active  | |
| Howard Air Services Limited Director • Civil Engineer  | 31 Dec 1991←33 Years→1 Jul 2025  | Dissolved  | |
| R.J. Howard Engineers Limited Director • Civil Engineer  | 31 Dec 1991←33 Years→Current  | Active  | |
