| Company | Timeline | Status | |
Promethean Technology Limited Secretary • Unreported | 24 Nov 2008←5 Years→24 Apr 2014 | Dissolved | |
| Chalkfree Limited Secretary • Unreported | 24 Nov 2008←5 Years→24 Apr 2014 | Active | |
| Promethean (Holdings) Limited Secretary • Unreported | 24 Nov 2008←5 Years→24 Apr 2014 | Active | |
| Promethean Limited Secretary • Unreported | 24 Nov 2008←5 Years→24 Apr 2014 | Active | |
