| Company | Timeline | Status | |
| British Engineerium Trust Limited(The) Director • Retired  | 5 Jan 1996←2 Years 9 Months→30 Oct 1998  | Active  | |
| Industrial Continuum Limited Director • Retired  | 5 Jan 1996←2 Years 2 Months→31 Mar 1998  | Dissolved  | |
| Cummins Turbo Technologies Limited Director • Chartered Engineer  | 31 Dec 1993←1 Year 4 Months→26 May 1995  | Active  | |
| Ricardo Investments Limited Director • Chartered Engineer  | 23 Oct 1991←11 Months→25 Sep 1992  | Active  | |
