| Company | Timeline | Status | |
| Diamond & Co (Consultant Surveyors) Limited Director • Librarian | 26 Dec 1991←20 Years→1 Mar 2012 | Active | |
| Diamond & Co (Consultant Surveyors) Limited Secretary • Librarian | 26 Dec 1991←20 Years→1 Mar 2012 | Active | |
| Interstates Properties Limited Secretary • Librarian | 6 Mar 1991←21 Years→1 Mar 2012 | Dissolved | |
| Interstates Properties Limited Director • Librarian | 6 Mar 1991←21 Years→1 Mar 2012 | Dissolved | |
