 An effect of this Act was that, in the letter of the law, the television or radio companies rather than the regulator became the broadcasters, as had been the case in the early (1955–1964) era of the Independent Television Authority when it had fewer regulatory powers than it would later assume.In television, the Act allowed for the creation of a fifth analogue terrestrial television channel in the UK, which turned out to be Channel 5, and the growth of multichannel satellite television.It also stipulated that the BBC, which had previously produced the vast majority of its television programming in-house, was now obliged to source at least 25% of its output from independent production companies.