| Company | Timeline | Status | |
| TQL Contracts Ltd Director • Quarrymaster | 31 Dec 1988←33 Years→3 May 2022 | Dissolved | |
| Tillicoultry Quarries Limited Director • Quarrymaster | 31 Dec 1988←37 Years→Current | Active | |
| Tillicoultry Quarries Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
