BBC teletext service, Ceefax, was introduced, created initially to provide subtitling, but developed into a news and information service. In 1978, BBC staff went on strike just before the Christmas of that year, thus blocking out the transmission of both channels and amalgamating all four radio stations into one. Since the deregulation of the UK television and radio market in the 1980s, the BBC has faced increased competition from the commercial sector (and from the advertiser-funded public service broadcaster Channel 4), especially on satellite television, cable television, and digital television services. In the late 1980s, the BBC began a process of
BBC World Service 2012 and the final broadcast from Bush House was a news bulletin broadcast at 11.00GMT on 12 July 2012. The BBC World Service encompasses an English 24-hour global radio network and separate services in 27 other languages. News and information is available in these languages on the BBC website, with many having RSS feeds and specific versions for use on mobile devices, and some also offer email notification of stories. In addition to the English service, 18 of the language services broadcast a radio service using the short wave, AM or FM bands. These are also available to listen live