| Company | Timeline | Status | |
| Enviroprep Limited Secretary • Company Director  | 29 Jul 1997←22 Years→10 Jan 2020  | Active  | |
| Enviroprep Limited Director • Company Director  | 29 Jul 1997←22 Years→10 Jan 2020  | Active  | |
| Permadeck Systems Limited Director • Sad  | 7 Jun 1993←26 Years→10 Jan 2020  | Active  | |
| Permadeck Systems Limited Secretary • Sad  | 7 Jun 1993←26 Years→10 Jan 2020  | Active  | |
| N.L. Williams Group Limited Secretary • Unreported  | 31 May 1991←28 Years→10 Jan 2020  | Active  | |
| N.L. Williams Group Limited Director • Office Manager  | 31 May 1991←28 Years→10 Jan 2020  | Active  | |
