| Company | Timeline | Status | |
| Shelmore Timber Limited Director • Retired | 22 Jan 2018←7 Years→Current | Active | |
| Platanus Investments Director • Company Director | 19 Apr 2012←13 Years→Current | Active | |
| Salix Investments Director • Company Director | 19 Apr 2012←13 Years→Current | Active | |
| Juglans Investments Director • Company Director | 19 Apr 2012←13 Years→Current | Active | |
| Betula Investments Director • Company Director | 19 Apr 2012←13 Years→Current | Active | |
| OQS Investments Director • Company Director | 11 Apr 2012←13 Years→Current | Active | |
| Calstock Estates Limited Director • Director | 30 Sep 2009←16 Years→Current | Active | |
| Immunepeptides Limited Director • Director | 15 Sep 2008←1 Year 6 Months→6 Apr 2010 | Active | |
| Immunepeptides Limited Secretary • Director | 15 Sep 2008←1 Year 6 Months→6 Apr 2010 | Active | |
| The Binding Site Group Limited Director • Director | 14 Jul 2005←4 Years→31 Aug 2009 | Active | |
