BBC Radio is an operational business division and service of the British Broadcasting Corporation (BBC) which has operated in the United Kingdom under the terms of a royal charter since 1927. The service provides national radio stations covering the majority of musical genres, as well as local radio stations covering local news, affairs, and interests. It also oversees online audio content.
Of the national radio stations, BBC Radio 1, 2, 3, 4, and 5 Live are all available through analogue radio (1, 2, 3 and 4 on FM and 5 Live on MW; BBC Radio 4 additionally broadcasts on longwave) as well as on DAB Digital Radio and BBC Sounds. BBC Radio 1Xtra, 1 Dance, 1 Anthems, 3 Unwind, 4 Extra, 5 Sports Extra, 6 Music, Asian Network and the World Service broadcast only on DAB and BBC Sounds.All of the BBC's national radio stations broadcast from bases in London and Manchester, usually in or near to Broadcasting House or MediaCityUK. However, the BBC's network production units located in Belfast, Birmingham, Bristol, Cardiff and Glasgow also make radio programmes.