S4C is a Welsh television channel broadcast from the capital, Cardiff. The first television channel to be aimed specifically at a Welsh-speaking audience, it is (after BBC One, ITV and BBC Two) the fourth oldest British terrestrial television channel (Channel 4 was launched in the rest of the United Kingdom one day later).
There were two versions of the channel: the first, broadcast on analogue television, was bilingual (Welsh and English) with most of its English-language programming being either simultaneous relays or deferred retransmissions of material broadcast by Channel 4 (analogue reception of which is unavailable in most of Wales); the second, on digital television (which also supplies Channel 4 to viewers in Wales), a 100% Welsh-language service, branded S4C Digidol (S4C Digital).
The analogue service ended when digital switchover was completed in Wales on 31 March 2010.
