| Company | Timeline | Status | |
| Preston Engines Limited Director • Mechanic | 4 May 2016←4 Years→3 Feb 2021 | Active | |
| Blackburns Auto Engineering Limited Director • Unreported | 19 Sep 2001←24 Years→23 Dec 2025 | Dissolved | |
| Blackburn Bros Limited Director • Motor Engineer | 13 Oct 1991←34 Years→Current | Active | |
