| Company | Timeline | Status | |
| Allen Associates (PD) Ltd Director • Chemical Engineer | 16 Oct 2019←3 Years→7 Mar 2023 | Dissolved | |
| Distillery Process Ltd Director • Chemical Engineer | 28 Nov 2014←8 Years→16 May 2023 | Dissolved | |
| Allen Associates (H.P.E.) Limited Director • Consulting Engineer | 1 Jun 2001←24 Years→Current | Active | |
