| Company | Timeline | Status | |
| Action Medical Research Director • Peer Of The Realm | 14 Mar 1991←4 Years→12 Jul 1995 | Active | |
| Armstrong-Jones Director • Company Director | 31 Dec 1990←26 Years→13 Jan 2017 | Active | |
| Armstrong-Jones Director • Unreported | 1 Jan 1970←47 Years→13 Jan 2017 | Active | |
