| Company | Timeline | Status | |
| The British Rototherm Company Limited Director • Director | 7 Mar 2006←4 Years→12 Oct 2010 | Active | |
| Thermocouple Instruments Limited Secretary • Unreported | 10 Oct 1992←13 Years→7 Mar 2006 | Dissolved | |
| Cornelius Bros. (Engineers) Limited Secretary • Unreported | 17 Aug 1992←13 Years→7 Mar 2006 | Dissolved | |
| RTD Products Limited Secretary • Unreported | 18 Jan 1992←14 Years→7 Mar 2006 | Dissolved | |
