| Company | Timeline | Status | |
| Hoghton Holding Company Limited Director • Director | 1 Sep 2004←21 Years→Current | Active | |
| Winleafe Limited Director • Eng & Co Director | 1 Sep 2004←21 Years→Current | Active | |
| Hartley Precision Engineering Co. Limited Director • Engineer & Co Director | 1 Sep 2004←21 Years→Current | Active | |
| Argyle Engineering Limited Director • Mechanical Engineer | 1 Dec 2000←24 Years→Current | Active | |
| Metrail Engineering Limited Director • Mechanical Engineer | 25 Oct 2000←25 Years→Current | Active | |
