| Company | Timeline | Status | |
| James Boyd & Sons (Carnmoney) Limited Director • Quarrymaster  | 4 Oct 2001←20 Years→12 Oct 2021  | Active  | |
| Mallusk Quarries Limited Director • Quarrymaster  | 18 Sep 2000←21 Years→12 Oct 2021  | Active  | |
| Ulster Roads, Limited Director • Quarry Master  | 17 Sep 2000←21 Years→12 Oct 2021  | Active  | |
