| Company | Timeline | Status | |
| Gringarten Consulting Ltd Director • Professor | 30 Jun 2014←11 Years→Current | Active | |
| Melton Court Parking Limited Director • Unreported | 21 Jan 2010←15 Years→Current | Active | |
Well Analysis Limited Director • Professor | 28 Nov 2006←12 Years→12 May 2019 | Dissolved | |
