| Company | Timeline | Status | |
| T & J Fire & Security Limited Director • Salesman & Director | 17 Mar 2010←15 Years→Current | Active | |
| Blenheim Court Management (Welwyn Garden City) Limited Director • Fire Protection | 29 Mar 2000←25 Years→Current | Active | |
| T & J Fire Alarms Limited Director • Salesman | 18 Oct 1993←32 Years→Current | Active | |
| T. & J. Fire Limited Director • Salesman | 18 Jan 1993←33 Years→Current | Active | |
| T & J Fire Alarms Limited Director • Unreported | 1 Jan 1970←56 Years→Current | Active | |
