| Company | Timeline | Status | |
| Jeremy Barrell Expert Witness Limited Director • Director | 17 Mar 2020←5 Years→Current | Active | |
Vivid Tree Consulting Ltd Director • Company Director | 28 Jul 2010←4 Years→29 Jul 2014 | Dissolved | |
| Barrell Treecare Limited Director • Unreported | 21 May 2004←21 Years→Current | Active | |
| Barrell Treecare Limited Secretary • Unreported | 21 May 2004←21 Years→Current | Active | |
