| Company | Timeline | Status | |
| Culford School Trustee Company Limited Director • Retired | 2 Nov 2005←3 Years→1 Oct 2009 | Dissolved | |
Otley College Enterprises Limited Director • Farmer | 1 Jul 1993←11 Years→21 Oct 2004 | Dissolved | |
| Bacton Pigs Limited Director • Director | 7 Jan 1992←7 Years→20 Nov 1999 | Active | |
| David Black & Son Limited Director • Director | 6 Jan 1992←18 Years→20 Nov 2010 | Active | |
