S4C Dau
S4C Dau (Welsh: Sianel Pedwar Cymru Dau, meaning Channel Four Wales Two, formerly branded S4C2) was a free-to-air Welsh television station owned by S4C which, until 2010, broadcast coverage of the Senedd at the Senedd building. It was also used for extended coverage of events shown on the main S4C service, such as the National Eisteddfod of Wales and Royal Welsh Show.