| Company | Timeline | Status | |
| 4 Navitas (Green Energy Solutions) Ltd Director • Clinical Psychologist | 8 Sep 2015←5 Months→23 Feb 2016 | Dissolved | |
| Dr Costas Papageorgiou Limited Director • Unreported | 3 Apr 2013←12 Years→Current | Active | |
| Papageorgiou Horne Partnership LLP Designated LLP Member • Unreported | 3 Apr 2013←12 Years→Current | Active | |
