| Company | Timeline | Status | |
| Williams Plant Hire Limited Director • Plant Hire Operator | 15 Aug 1991←6 Years→17 Nov 1997 | Active | |
| John Fox Plant Limited Director • Manager | 13 Jun 1991←9 Years→23 Dec 2000 | Active | |
| Williams Plant Hire Limited Director • Unreported | 1 Jan 1970←27 Years→17 Nov 1997 | Active | |
