| Company | Timeline | Status | |
| Harkness Screens (Holdings) Limited Director • Unreported | 27 Jun 2018←7 Years→Current | Active | |
| Harkness Hall (Group) Limited Director • Unreported | 27 Jun 2018←7 Years→Current | Active | |
| Harkness Screens (Usa) Limited Director • Unreported | 27 Jun 2018←7 Years→Current | Active | |
| Harkness Screens (UK) Limited Director • Unreported | 27 Jun 2018←7 Years→Current | Active | |
