| Company | Timeline | Status | |
| Douglas Lein Consultancy Limited Director • Director | 28 Oct 2024←1 Year 1 Month→Current | Active | |
| Lein Holdings Limited Director • Director | 18 Oct 2024←1 Year 1 Month→Current | Active | |
| City Horse Racing Limited Director • Director | 22 Mar 2016←9 Years→Current | Active | |
| O J Neil Biomass Limited Director • Director | 22 Mar 2016←9 Years→Current | Active | |
Gag 403 Limited Director • None | 18 Jun 2015←2 Years 1 Month→25 Jul 2017 | Dissolved | |
Eastern Counties Spreader Hire Ltd Director • Director | 1 Jun 2012←4 Years→4 Oct 2016 | Dissolved | |
| CHR Track Systems Limited Director • Company Director | 7 May 2011←14 Years→Current | Active | |
| O J Neil Contracting Ltd Director • Contracting | 12 Oct 2006←19 Years→Current | Active | |
