| Company | Timeline | Status | |
| Project Ahead Limited Director • Unreported | 29 Nov 1999←26 Years→23 Dec 2025 | Dissolved | |
| Design-Build Management Limited Director • Architect | 25 Oct 1991←34 Years→23 Dec 2025 | Dissolved | |
| Design-Build Management Limited Director • Unreported | 1 Jan 1970←56 Years→23 Dec 2025 | Dissolved | |
