| Company | Timeline | Status | |
| Grafham Water Sailing Club Limited Director • Retired  | 9 Jul 2000←4 Years→30 Mar 2005  | Active  | |
Armstrong Projects Limited Director • Engineer  | 13 Jul 1995←20 Years→5 Apr 2016  | Dissolved  | |
| Icu Medical (SM) Limited Director • Business Development Director  | 13 Aug 1991←3 Years→30 Sep 1994  | Active  | |
| Graseby Limited Director • Unreported  | 1 Jan 1970←24 Years→30 Sep 1994  | Dissolved  | |
