| Company | Timeline | Status | |
| Black Diamond Performance Limited Director • Director | 1 Oct 2024←1 Year 3 Months→Current | Active | |
| M.J. Allen Castings And Machining Ltd Director • Commercial Director | 19 Feb 2024←1 Year 11 Months→Current | Active | |
| M.J. Allen Precision Ltd Director • Commercial Director | 19 Feb 2024←1 Year 11 Months→Current | Active | |
| M.J. Allen Automotive Ltd Director • Commercial Director | 19 Feb 2024←1 Year 11 Months→Current | Active | |
| Countytrac Limited Director • Commercial Director | 19 Feb 2024←1 Year 11 Months→Current | Active | |
| M.J. Allen Holdings Limited Director • Commercial Director | 19 Feb 2024←1 Year 11 Months→Current | Active | |
| Probite Performance Ltd Director • Director | 18 Jul 2023←2 Years 6 Months→Current | Active | |
| MJ Allen Developments Ltd Director • Director | 16 May 2021←5 Months→9 Nov 2021 | Dissolved | |
| M.J. Allen Metalwork Ltd Director • Manager | 1 Dec 2015←10 Years→Current | Active | |
