| Company | Timeline | Status | |
| The Owston Grange Group Limited Director • Unreported | 24 Jul 1998←27 Years→Current | Active | |
| The Owston Grange Group Limited Secretary • Operations Director | 24 Jul 1998←27 Years→Current | Active | |
| Grange Systems Limited Secretary • Operations Director | 2 Jul 1998←27 Years→Current | Active | |
| Grange Systems Limited Director • Unreported | 2 Jul 1998←27 Years→Current | Active | |
| Landrail Firearms Limited Director • Unreported | 28 Apr 1998←27 Years→Current | Liquidation | |
| Landrail Firearms Limited Secretary • Operations Director | 28 Apr 1998←27 Years→Current | Liquidation | |
| Crest Ultrasonics Europe Limited Secretary • Unreported | 1 Jul 1997←1 Year→28 Jul 1998 | Active | |
