| Company | Timeline | Status | |
| Stairsteady Limited Director • Director | 5 Sep 2006←19 Years→Current | Active | |
| The Holbrook Property Company Limited Director • Engineer | 6 Mar 1997←28 Years→Current | Active | |
| Advanced Engineering Techniques Limited Director • Production Engineer | 28 Sep 1991←34 Years→Current | Active | |
| Medical Equipment Manufacturers (Sheffield) Limited Director • Engineer | 7 Aug 1991←4 Years→24 Oct 1995 | Active | |
