| Company | Timeline | Status | |
| Cieh Limited Director • Ehp (retired) | 1 Jan 2017←1 Year 12 Months→31 Dec 2018 | Active | |
| International Federation Of Environmental Health(The) Director • Environmental Health Officer | 1 Jan 2004←16 Years→23 Mar 2020 | Active | |
| The Environmental Health Registration Board Director • Environmental Health Officer | 11 Feb 2001←16 Years→31 Dec 2017 | Active | |
