| Company | Timeline | Status | |
| The British Museum Company Limited Director • Unreported | 8 May 1993←5 Years→3 Oct 1998 | Active | |
| Leconfield Farms Limited Director • Company Director | 31 Dec 1991←34 Years→Current | Active | |
| Leconfield Estate Company (The) Director • Writer | 31 Dec 1991←34 Years→Current | Active | |
| Egremont Mining Company Limited(The) Director • Company Director | 1 Oct 1991←3 Years→11 Nov 1994 | Active | |
| Egremont Estate Company(The) Director • Writer | 31 Dec 1990←35 Years→Current | Active | |
| Leconfield Farms Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
| Leconfield Estate Company (The) Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
| Egremont Estate Company(The) Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
