| Company | Timeline | Status | |
| GK Nisbet Properties Limited Director • Unreported | 25 Nov 2008←16 Years→Current | Active | |
| Henderson Kerr (Scrap Processors) Limited Director • Managing Director | 1 Dec 1998←8 Years→28 Sep 2007 | Dissolved | |
| Henderson Kerr Limited Director • Production Director | 1 Dec 1998←8 Years→28 Sep 2007 | Active | |
