| Company | Timeline | Status | |
| Irse Enterprises Limited Director • Electrical Engineer | 27 Apr 2007←3 Years→15 Apr 2011 | Active | |
| Irse Enterprises Limited Director • Signal Engineer | 21 Feb 2005←1 Year 4 Months→1 Jul 2006 | Active | |
| Institution Of Railway Signal Engineering Director • Unreported | 3 Apr 1998←13 Years→15 Apr 2011 | Active | |
