| Company | Timeline | Status | |
| The Roston Iron Foundry Limited Director • Engineer | 29 Dec 1991←3 Years→3 Jun 1995 | Dissolved | |
| Roston Castings Limited Director • Directors | 26 Dec 1991←3 Years→3 Jun 1995 | Active | |
| Ecam Engineering Limited Director • Engineer | 26 Dec 1991←3 Years→3 Jun 1995 | Active | |
