| Company | Timeline | Status | |
| Boone Group Holdings Limited Director • Works Dir | 28 Jan 1998←27 Years→Current | Active | |
| H.C.S. Boone Limited Director • Director | 31 Jul 1991←34 Years→Current | Active | |
| John R. Boone Limited Director • Technical/research/development | 31 Jul 1991←34 Years→Current | Active | |
