| Company | Timeline | Status | |
| Sarah Louise Walker Limited Director • Company Director | 20 May 2005←3 Years→14 Jul 2008 | Active | |
| Mackay Waste Limited Director • Accountant | 5 Mar 1999←9 Years→29 Jul 2008 | Active | |
| Mackay Waste Limited Secretary • Accountant | 5 Mar 1999←9 Years→29 Jul 2008 | Active | |
