| Company | Timeline | Status | |
| Sierra Space Heating Limited Director • Administration | 1 Jun 2008←17 Years→Current | Active | |
Sierra Energy Solutions Ltd Secretary • Unreported | 25 Oct 2007←11 Years→2 Apr 2019 | Dissolved | |
| Patio Heaters Direct Ltd Director • Manager | 31 Jul 2007←18 Years→Current | Active | |
| Patio Heater Doctor Ltd Director • Sales And Marketing Manager | 1 Oct 2003←22 Years→Current | Active | |
| Sierra Leisure Products Limited Director • Managing Director | 10 Sep 2001←24 Years→Current | Active | |
