| Company | Timeline | Status | |
| Johnson Matthey Davy Technologies Limited Director • Engineer | 7 Jul 1991←6 Months→31 Jan 1992 | Active | |
| Johnson Matthey Davy Technologies International Limited Director • Engineer | 7 Jul 1991←6 Months→31 Jan 1992 | Dissolved | |
| Johnson Matthey Davy Technologies International Limited Director • Unreported | 1 Jan 1970←22 Years→31 Jan 1992 | Dissolved | |
