| Company | Timeline | Status | |
| Estin & Co Limited Director • Director | 1 Jul 1998←27 Years→Current | Active | |
| Estin & Co Limited Secretary • Director | 1 Jul 1998←27 Years→Current | Active | |
Oliver Wyman Consulting Limited Director • Consultant | 1 Mar 1993←4 Years→30 Jun 1997 | Dissolved | |
