| Company | Timeline | Status | |
| Cyfeillion Ellis Wynne Director • Wedi Ymddeol | 1 Dec 2010←14 Years→Current | Active | |
| Cwmni Cynnal Director • Pennaeth Ysgol | 14 Nov 2008←9 Years→7 Sep 2018 | Dissolved | |
| Cyfeillion Ellis Wynne Secretary • Unreported | 9 Sep 1996←4 Years→1 Mar 2001 | Active | |
