| Company | Timeline | Status | |
| Maggie's Hoosie Preservation Trust Director • Engineer | 5 Mar 2004←4 Years→17 Mar 2008 | Active | |
| Scotland's Lighthouse Museum Limited Director • Councillor | 10 Jun 2003←8 Months→18 Feb 2004 | Active | |
Pneuropower (Scotland) Limited Director • Engineering Director | 16 Dec 1993←24 Years→10 Jul 2018 | Dissolved | |
| Darg Engineering Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
