| Company | Timeline | Status | |
| Lafayette Instruments Europe Ltd Director • Director | 15 Oct 2012←7 Years→1 Apr 2020 | Active | |
| Campden Instruments Ltd Director • Director | 15 Oct 2012←7 Years→1 Apr 2020 | Active | |
| Lafayette Instruments Europe Ltd Secretary • Unreported | 24 Apr 2006←13 Years→1 Apr 2020 | Active | |
| Campden Instruments Ltd Secretary • Unreported | 15 Mar 2006←6 Years→15 Oct 2012 | Active | |
| Certain Indexes Limited Director • Director | 22 Oct 1998←21 Years→1 Apr 2020 | Active | |
| Certain Indexes Limited Secretary • Unreported | 22 Oct 1998←21 Years→1 Apr 2020 | Active | |
