| Company | Timeline | Status | |
| Havsco Limited Director • Managing Director | 24 Oct 2005←18 Years→30 Nov 2023 | Active | |
| Chell Instruments Limited Director • Director | 8 Jul 1998←2 Years 10 Months→1 Jun 2001 | Active | |
| Laplace Instruments Limited Director • Director | 5 Mar 1992←31 Years→30 Nov 2023 | Active | |
