| Company | Timeline | Status | |
| Houlder Engineering Group Limited Director • Director | 1 May 2012←3 Years→31 Dec 2015 | Active | |
| Houlder Limited Director • Director | 27 Jun 2008←7 Years→31 Dec 2015 | Active | |
| Avoco Secure Limited Director • Geologist | 14 Nov 2006←19 Years→Current | Active | |
Ocean Hover Ltd Director • Director | 25 Aug 2004←12 Years→20 Jun 2017 | Dissolved | |
| Kite Dedicated Limited Director • Geologist | 22 Sep 2000←3 Years→31 Oct 2003 | Dissolved | |
| Gracechurch UTG No. 30 Limited Director • Company Director | 6 Aug 1997←6 Years→31 Oct 2003 | Dissolved | |
| Gracechurch UTG No. 34 Limited Director • Company Director | 6 Aug 1997←6 Years→31 Oct 2003 | Dissolved | |
| Gracechurch UTG No. 31 Limited Director • Company Director | 6 Aug 1997←6 Years→31 Oct 2003 | Dissolved | |
| Gracechurch UTG No. 28 Limited Director • Company Director | 6 Aug 1997←6 Years→31 Oct 2003 | Dissolved | |
| Gracechurch UTG No. 32 Limited Director • Company Director | 6 Aug 1997←6 Years→31 Oct 2003 | Dissolved | |
