Television viewing is Britain’s most popular leisure pastime: 95 per cent of households have a colour television set and 68 per cent have a video recorder. There are four television channels, and five national and over 100 local radio stations. News laws will allow another national television channel and as many as three national commercial radio stations. Subscribers to a privately owned satellite service can receive five more television channels. A lot of air time is devoted to political, social and economic affairs. Although politicians often face tough questioning, particularly during election campaigns, broadcasters are expected to be impartial in their treatment of political controversies. Some programmes especially radio, allow members of the public to challenge politicians and other public figures on major issues. The Government is not responsible for programming content or the day-to-day conduct of the business of broadcasting. Broadcasters are free to air programs with the only limitation on their independence being the requirement that they not offend good taste.