From 1982 to 2010, a somewhat comparable situation existed for the fourth channel allocation, with Channel 4 broadcasting in England, Scotland, and Northern Ireland, and S4C, operated by a separate public authority, broadcasting in Wales. Until the digital switchover in Wales in 2010, S4C's analogue service broadcast primarily Welsh-language programming, along with English-language programming from Channel 4, often on delay. In this sense, S4C could be considered a Channel 4 affiliate, with Channel 4's operations in the rest of the UK being similar to an O&O. Since the digital switchover, S4C has been a fully Welsh-language service, with Channel 4 available in Wales at all times on a separate digital channel.