| Company | Timeline | Status | |
| Napa Holdings Limited Director • Structural Engineer | 29 Jan 2021←4 Years→Current | Active | |
| C.R. Holdings Limited Director • Structural Engineer | 1 Jul 2001←24 Years→Current | Active | |
| T S I Structures Limited Director • Structural Engineer | 1 Jul 1999←26 Years→Current | Active | |
