| Company | Timeline | Status | |
| The British Art Journal Trust Limited Director • Surveyor Of The Queens Picture | 2 Mar 2006←18 Years→4 Jun 2024 | Dissolved | |
| Royal Collection Enterprises Limited Director • Surveyor Of The Queen's Pictures | 1 Jul 2005←14 Years→16 Sep 2019 | Active | |
| The Samuel Courtauld Trust Director • Surveyor | 24 Mar 2005←7 Years→21 Nov 2012 | Active | |
| Dulwich Picture Gallery Enterprises Limited Director • Director | 22 Mar 1996←9 Years→1 Apr 2005 | Active | |
