| Company | Timeline | Status | |
| The British Rototherm Company Limited Director • Director | 7 Mar 2006←2 Years 10 Months→2 Jan 2009 | Active | |
| Corvette Products Limited Director • Company Director | 28 Nov 2000←8 Years→2 Oct 2009 | Active | |
| Thermocouple Instruments Limited Director • Managing Director | 10 Oct 1992←16 Years→2 Jan 2009 | Dissolved | |
| RTD Products Limited Director • Managing Director | 18 Jan 1992←16 Years→2 Jan 2009 | Dissolved | |
| Cornelius Bros. (Engineers) Limited Director • Company Director | 10 Oct 1990←18 Years→2 Jan 2009 | Dissolved | |
