| Company | Timeline | Status | |
| Hilger Crystals Limited Secretary • Cfo | 26 Jun 2007←3 Years→19 Jul 2010 | Active | |
| Hilger Analytical Limited Secretary • Cfo | 26 Jun 2007←12 Years→30 Jun 2019 | Active | |
| Newport Spectra-Physics Limited Secretary • Cfo | 19 Dec 2003←15 Years→30 Jun 2019 | Active | |
