Originally a subsidiary of the Independent Broadcasting Authority (IBA),[2] the station is now owned and operated by Channel Four Television Corporation, a public corporation of the Department for Culture, Media and Sport,[3] which was established in 1990 and came into operation in 1993. Until 2010, Channel 4 did not broadcast in Wales, but many of its programmes were re-broadcast there by the Welsh fourth channel S4C. In 2010, Channel 4 extended service into Wales and became a nationwide television channel. The network's headquarters are in London and Leeds, with creative hubs in Glasgow and Bristol.[4]
