| Company | Timeline | Status | |
| Turnbull (Potato Sales) Limited Director • Company Director | 3 May 1994←31 Years→Current | Active | |
| Turnbull (Corn Sales) Limited Director • Company Director | 3 May 1994←31 Years→Current | Active | |
| G.B.Turnbull Limited Director • Company Director | 3 May 1994←31 Years→Current | Active | |
