| Company | Timeline | Status | |
| Wiltshire Historic Buildings Trust Limited (The) Director • Director | 3 Oct 2023←2 Years→Current | Active | |
| Caledonia Us Investments Limited Director • Company Director | 1 Dec 2020←4 Years→Current | Active | |
| The Cayzer Family Archive Director • Executive Director | 29 May 2020←5 Years→Current | Active | |
| Buckingham Gate Limited Director • Company Director | 26 Sep 2018←7 Years→Current | Active | |
| The Bronze Oak Project Limited Director • Director | 18 Mar 2016←7 Years→27 Jun 2023 | Dissolved | |
| Heritage Of London Trust Limited(The) Director • Director | 16 Oct 2012←10 Years→31 Mar 2023 | Active | |
| The Henderson Smaller Companies Investment Trust Plc Director • None | 13 May 2011←10 Years→1 Oct 2021 | Active | |
| The Cayzer Trust Company Limited Director • Company Director | 30 Apr 2009←16 Years→Current | Active | |
Ocean Dial Group Limited Director • Company Director | 4 Jul 2008←4 Years→22 May 2013 | Dissolved | |
| Close Brothers Group Plc Director • Company Director | 1 Jan 2008←4 Years→22 Nov 2012 | Active | |
