| Company | Timeline | Status | |
| Crop Evaluation Limited Director • Agricultural Merchant | 20 Sep 2006←3 Years→9 Oct 2009 | Dissolved | |
| Scottish Quality Crops Limited Director • Managing Director | 10 Apr 1997←10 Years→21 Jan 2008 | Converted/Closed | |
| McCreath Simpson & Prentice Limited Director • Agricultural Merchant | 22 Aug 1992←31 Years→12 Oct 2023 | Active | |
| McCreath Simpson Limited Director • Merchant | 22 Aug 1991←32 Years→12 Oct 2023 | Active | |
| Simpsons Malt Limited Director • Director | 22 Aug 1991←32 Years→12 Oct 2023 | Active | |
| Scottish Corn Trade Association Limited (The) Director • Managing Director | 28 Mar 1990←15 Years→9 Nov 2005 | Active | |
