| Company | Timeline | Status | |
| Occupational Hygiene Training Association Director • Unreported  | 29 Sep 2009←7 Years→3 Jun 2017  | Active  | |
The British Occupational Hygiene Society Director • Occupational Hygienist  | 15 May 2008←1 Year 11 Months→28 Apr 2010  | Dissolved  | |
The British Occupational Hygiene Society Director • Occupational Hygienist  | 12 Apr 2000←2 Years 12 Months→9 Apr 2003  | Dissolved  | |
| The Institute Of Sustainability And Environmental Professionals Director • Occupational Hygienist  | 20 Jan 1999←7 Months→15 Sep 1999  | Active  | |
| The Environmental Auditors Registration Association Director • Occupational Hygienist  | 11 Jun 1997←2 Years→30 Jun 1999  | Active  | |
Cazarilh Consulting Limited Director • Occupational Hygienist  | 16 Mar 1992←7 Months→31 Oct 1992  | Dissolved  | |
