| Company | Timeline | Status | |
| D Young & Co International Limited Director • Unreported | 8 Jun 2017←8 Years→Current | Active | |
D Young & Co Services Limited Director • Patent Attorney | 18 Feb 2013←5 Years→27 Feb 2018 | Dissolved | |
| D Young & Co LLP Non-designated LLP Member • Unreported | 31 Mar 2010←15 Years→Current | Active | |
