| Company | Timeline | Status | |
| John McNicol & Co. (Electrical Engineers) Limited Director • Electrical Engineer | 13 Oct 2005←18 Years→15 Oct 2023 | Active | |
| John McNicol & Co. (Electrical Engineers) Limited Secretary • Unreported | 13 Oct 2005←18 Years→15 Oct 2023 | Active | |
| John McNicol & Co. (Holdings) Limited Secretary • Unreported | 6 Oct 2005←20 Years→Current | Active | |
| John McNicol & Co. (Holdings) Limited Director • Unreported | 6 Oct 2005←20 Years→Current | Active | |
| John McNicol & Co. (1938) Limited Director • Unreported | 1 Oct 1992←33 Years→Current | Active | |
