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
Teletext Ltd. findings, the service would cease broadcasting most of its services on analogue and digital television, with the exception of the commercial services broadcast on Freeview channels 101-107 such as Teletext Holidays and the firm's profitable travel websites in January 2010, with the switch off date subsequently brought forward to 14 December 2009 (Sky Digital) and 15 December 2009 (analogue TV, Freesat and Freeview). Teletext's news and information service were removed from: ITV, Channel 4 and Five on analogue TV; ITV and Channel 4 on Sky Digital; ITV, Channel 4 and channel 100 on Freeview; editorial on Teletext Extra on Freeview;