| Company | Timeline | Status | |
| The Roston Iron Foundry Limited Director • Company Director | 12 Jun 1995←28 Years→30 Apr 2024 | Dissolved | |
| Roston Castings Limited Director • Managing Director | 10 Mar 1995←30 Years→Current | Active | |
| Roston Castings Limited Director • Managing Director | 10 Mar 1995←29 Years→19 Jun 2024 | Active | |
| The Roston Iron Foundry Limited Secretary • Unreported | 16 Dec 1993←30 Years→30 Apr 2024 | Dissolved | |
| Roston Castings Limited Secretary • Unreported | 18 Nov 1993←12 Years→20 Apr 2006 | Active | |
