| Company | Timeline | Status | |
| Nextus Limited Director • C.e.o | 20 Oct 2011←14 Years→Current | Active | |
| Ringdale Deutschland Limited Secretary • Director | 29 Jan 2007←18 Years→Current | Active | |
| Ringdale Instruments Limited Director • Chairman | 30 Mar 2000←25 Years→Current | Active | |
| Ringdale Deutschland Limited Director • Managing Director | 6 Nov 1997←9 Years→29 Jan 2007 | Active | |
| PC Card Technology Plc Director • Managing Director | 21 Oct 1996←29 Years→Current | Active | |
| Ncryption Plc Director • Unreported | 14 Jun 1996←29 Years→Current | Active | |
| Network Technology Limited Director • Unreported | 5 Jun 1995←30 Years→Current | Active | |
