| Company | Timeline | Status | |
| John Roberts Hire Limited Director • Plant Operator | 1 Dec 2003←21 Years→Current | Active | |
| John Roberts (Ffestiniog) Limited Director • Plant Operator | 9 Mar 2000←25 Years→Current | Active | |
| Noteavis Limited Director • Contractor | 18 Oct 1993←32 Years→Current | Active | |
