| Company | Timeline | Status | |
| Williams-Wynn Estates Limited Director • Chartered Surveyor  | 8 Sep 2008←5 Years→30 Sep 2013  | Active  | |
| Iscoyd Estate Company,(The) Secretary • Land Agent  | 31 Dec 2004←20 Years→Current  | Active  | |
| Carter Jonas LLP Non-designated LLP Member • Unreported  | 11 Apr 2003←7 Years→30 Apr 2010  | Active  | |
| Packwood Haugh School Limited Director • Chartered Surveyor  | 6 Mar 2000←8 Months→18 Nov 2000  | Dissolved  | |
| Carter Jonas Service Company Director • Surveyor  | 1 Nov 1997←9 Years→30 Apr 2007  | Active  | |
| Iscoyd Estate Company,(The) Director • Unreported  | 1 Jan 1970←55 Years→Current  | Active  | |
