| Company | Timeline | Status | |
| Sped Limited Director • Director | 10 Oct 2024←1 Year→Current | Active | |
| Hill Speed Racing Limited Director • Engineer | 1 Jul 2020←5 Years→Current | Active | |
| Hill Speed Racing Limited Director • Company Director | 16 Aug 1996←19 Years→21 Jun 2016 | Active | |
| The Delph Hill Preservation Limited Director • Managing Director | 18 Nov 1993←3 Years→5 Dec 1996 | Active | |
