| Company | Timeline | Status | |
Trevor Harrison Consultancy Services Limited Director • Director | 6 May 2009←6 Years→10 Nov 2015 | Dissolved | |
Marine Design Centre Limited Director • Managing Director | 8 Dec 2006←2 Years 2 Months→16 Feb 2009 | Dissolved | |
| Northern Business Forum Limited Director • Managing Director | 5 Jun 2006←2 Years 8 Months→13 Feb 2009 | Dissolved | |
| Northern Defence Industries Limited Director • Managing Director | 8 May 2006←2 Years 9 Months→16 Feb 2009 | Dissolved | |
| Rheinmetall Bae Systems Land Limited Director • Managing Director | 9 Sep 2002←3 Years→30 Sep 2005 | Active | |
