| Company | Timeline | Status | |
| Martin-Baker Aircraft Company Limited Director • Company Director | 8 May 1992←33 Years→Current | Active | |
| Killinchy Aerospace Holdings Limited Director • Company Director | 8 May 1992←33 Years→Current | Active | |
| J. Martin Armaments Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
