| Company | Timeline | Status | |
| Thermo Fisher Scientific Blade I Limited Director • Doctor | 16 May 2018←4 Years→3 Jan 2023 | Active | |
| 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 | |
| Thermo Fisher Scientific Blade V Limited Director • Doctor | 12 May 2011←7 Years→16 May 2018 | Active | |
| Calstock Estates Limited Director • Chairman | 30 Sep 2009←16 Years→Current | Active | |
| The Binding Site Corporation Limited Director • Doctor | 21 Aug 2009←1 Year 8 Months→12 May 2011 | Active | |
