| Company | Timeline | Status | |
| Technology Transfer Management Ltd Director • Director | 24 Jul 2013←12 Years→Current | Active | |
| Bodhi & Birch Limited Director • Director | 19 Mar 2012←10 Years→13 Sep 2022 | Dissolved | |
| Hiprom UK Limited Director • Director | 16 Apr 2009←16 Years→Current | Active | |
| Hitran Limited Director • Engineer | 7 Sep 2004←21 Years→Current | Active | |
| Alcester Management Services Ltd Director • Engineer | 17 Mar 2004←21 Years→Current | Active | |
| Cal Gavin Research Ltd Director • Director | 9 Dec 1998←26 Years→Current | Active | |
| Alcester Management Services Ltd Director • Company Director | 13 Oct 1998←9 Months→21 Jul 1999 | Active | |
| Cal Gavin Limited Director • Engineer | 31 Mar 1991←34 Years→Current | Active | |
| Cal Gavin Limited Secretary • Unreported | 31 Mar 1991←1 Year 11 Months→4 Mar 1993 | Active | |
