| Company | Timeline | Status | |
| AMPM (Contracting) Limited Director • Director | 4 Jul 2018←5 Years→2 Oct 2023 | Active | |
| Walker Cotter Safety Limited Director • Director | 6 Jul 2007←18 Years→Current | Active | |
| Walker Cotter (Southern) Limited Director • Director | 6 Jul 2007←12 Years→24 Jun 2020 | Active | |
| Asset Management Property Maintenance Limited Director • Director | 6 Jul 2007←16 Years→2 Oct 2023 | Active | |
| Tetra Group Limited Director • Director | 5 Jul 2007←12 Years→24 Jun 2020 | Dissolved | |
| Walker Cotter Limited Director • Director | 1 May 2005←20 Years→Current | Active | |
