| Company | Timeline | Status | |
| SCM Turbomotive Limited Director • Company Director | 19 Sep 2003←2 Years 4 Months→17 Jan 2006 | Active | |
Hewitt & Booth Limited Director • Director | 20 Oct 1991←3 Years→31 Mar 1995 | Dissolved | |
| John L. Brierley Limited Director • Director | 19 Oct 1991←14 Years→17 Jan 2006 | Active | |
