| Company | Timeline | Status | |
| Smith Brothers Group Holdings Limited Director • Unreported | 24 Oct 2022←3 Years→Current | Active | |
| Plymport Limited Director • Unreported | 18 May 2021←4 Years→Current | Active | |
| Smith Brothers Marine Limited Director • Unreported | 2 Oct 2006←19 Years→Current | Active | |
| Scientific Services (Paisley) Limited Secretary • Unreported | 10 Nov 2004←21 Years→Current | Active | |
| Smith Brothers Marine Limited Secretary • Unreported | 22 Aug 1996←29 Years→Current | Active | |
