| Company | Timeline | Status | |
| Milner Holdings Limited Director • Motor Engineer | 11 Nov 2002←23 Years→Current | Active | |
| Merlin International Trading Limited Director • Motor Engineer | 11 Nov 2002←23 Years→Current | Active | |
| Jonny Milner Motorsport Limited Director • Motor Engineer | 11 Nov 2002←19 Years→1 Feb 2022 | Dissolved | |
