| Company | Timeline | Status | |
| JST Holdings (Scotland) Ltd Director • Company Director | 3 Mar 2016←4 Years→6 Dec 2020 | Active | |
| JST Services (Scotland) Ltd Director • Company Director | 3 Dec 2009←11 Years→6 Dec 2020 | Active | |
| JST (Floating Piers) Ltd Director • Co.director | 9 Jul 2008←12 Years→6 Dec 2020 | Active | |
| JST (Port Services) Ltd Director • Haulage Contractor | 23 Jul 2001←24 Years→Current | Active | |
| Fleetstone Limited Director • Unreported | 6 Nov 1998←27 Years→Current | Active | |
