| Company | Timeline | Status | |
| Coilmaster Limited Director • Engineer | 18 Aug 1994←10 Months→7 Jul 1995 | Active | |
| Heating & Cooling Coils Limited Director • Production Director | 12 Nov 1991←1 Year 9 Months→31 Aug 1993 | Dissolved | |
| Heating & Cooling Coils Limited Director • Unreported | 1 Jan 1970←23 Years→31 Aug 1993 | Dissolved | |
