Description of Channel 4
Channel 4 is a British public-service television broadcaster which began transmission on 2 November 1982.
Although largely commercially self-funded, it is ultimately publicly owned; originally a subsidiary of the Independent Broadcasting Authority (IBA), the station is now owned and operated by Channel Four Television Corporation, a public body established in 1990, coming into operation in 1993.
With the conversion of the Wenvoe transmitter group in Wales to digital on 31 March 2010, Channel 4 became an entirely UK-wide TV channel for the first time.
The channel was established to provide a fourth television service to the United Kingdom in addition to the television licence-funded BBC's two services and the single commercial broadcasting network, ITV.