| Company | Timeline | Status | |
| Aspen (U.K.) Limited Director • Chartered Accountant | 15 Apr 2025←8 Months→Current | Active | |
| Railtech (UK) Limited Secretary • Unreported | 16 Dec 1998←7 Years→30 Jun 2006 | Dissolved | |
| Conductix-Wampfler Ltd Secretary • Unreported | 16 Dec 1998←3 Years→1 Dec 2002 | Active | |
Phase Separations Limited Director • Chartered Accountant | 17 Jul 1994←4 Months→14 Nov 1994 | Dissolved | |
| Aspen (U.K.) Limited Director • Chartered Accountant | 4 Dec 1991←16 Years→1 Jan 2008 | Active | |
| Job Filtration UK Limited Director • Chartered Accountant | 23 Nov 1991←4 Years→12 Oct 1996 | Active | |
| Trenslo Limited Director • Chartered Accountant | 23 Nov 1991←4 Years→12 Oct 1996 | Dissolved | |
Phase Separations Limited Secretary • Unreported | 14 Oct 1991←5 Years→31 Jan 1997 | Dissolved | |
