| Company | Timeline | Status | |
| Engineering Industries Association Director • Company Director | 26 Mar 1999←1 Year 5 Months→4 Sep 2000 | Dissolved | |
| Blue Diamond Machine Tools Limited Director • Company Secretary | 30 Jun 1991←26 Years→30 Jun 2017 | Active | |
| Blue Diamond Machine Tools Limited Secretary • Unreported | 30 Jun 1991←24 Years→21 Dec 2015 | Active | |
| Blue Diamond Engineering Limited Director • Company Secretary | 30 Jun 1991←10 Years→30 Jun 2001 | Active | |
| Blue Diamond Engineering Limited Secretary • Unreported | 30 Jun 1991←10 Years→30 Jun 2001 | Active | |
