| Company | Timeline | Status | |
| William Allison (Leys) Limited Director • Director | 24 Jan 2025←10 Months→Current | Active | |
| William Allison Holding Limited Director • Director | 24 Jan 2025←10 Months→Current | Active | |
| William Allison (Farms) Limited Director • Farmer | 9 Aug 1991←34 Years→Current | Active | |
