| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | BARROW KWONG HING LIMITED | — | Dissolved | 21/05/2026 – 10/12/2012 |
| Officer | BKH HEALTHCARE LIMITED | 🇬🇧Regno Unito | Dissolved | 20/05/2026 – 31/12/2012 |
| Officer | MEDICO-DENTAL HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 22/12/2025 – 12/10/2011 |
| Officer | CENTRE FOR DENTISTRY LIMITED | — | Liquidation | 22/05/2026 – 15/09/2011 |
| Officer | ORAL HEALTH FOUNDATION | 🇬🇧Regno Unito | Active | 27/12/2025 – 19/09/2012 |
31/12/2012
resigned
10/12/2012
resigned
10/12/2003
appointed