| Company | Timeline | Status | |
| 1901 ARTS Club Limited Director • Professor | 25 Jun 2002←19 Years→11 Jan 2022 | Dissolved | |
| Hattori Trust Company Limited Director • Musician | 21 Sep 1992←33 Years→Current | Active | |
| The Menuhin Competition Trust Director • Musician | 26 Nov 1991←33 Years→19 Nov 2024 | Dissolved | |
