| Company | Timeline | Status | |
| Dr Jack Boyle Limited Director • P.a. | 1 Apr 2000←25 Years→Current | Active | |
| Dr Jack Boyle Limited Director • P.a. | 1 Apr 2000←24 Years→31 Aug 2024 | Active | |
| Dr Jack Boyle Limited Secretary • P.a. | 27 Aug 1998←27 Years→Current | Active | |
| Dr Jack Boyle Limited Secretary • P.a. | 27 Aug 1998←26 Years→31 Aug 2024 | Active | |
