| Company | Timeline | Status | |
| Martang Limited Director • Director | 14 Sep 2012←11 Years→24 Oct 2023 | Dissolved | |
| Martin Jenkins Power Consulting Limited Director • Engineer | 1 Feb 2007←18 Years→Current | Active | |
| H & A (Marketing) Limited Director • Electrical Power Engineer | 21 May 1996←28 Years→2 Apr 2025 | Active | |
| Hall & Associates (Marketing) Ltd Director • Electrical Power Engineer | 31 Dec 1991←33 Years→2 Apr 2025 | Active | |
