| Company | Timeline | Status | |
| Scotia Computing Limited Director • Unreported | 26 Nov 1999←26 Years→Current | Active | |
| Scotia Instrumentation Limited Director • Director | 9 Aug 1988←37 Years→Current | Active | |
| The Deming Learning Network Ltd Director • Unreported | 1 Jan 1970←53 Years→17 Jan 2023 | Dissolved | |
