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
Sbectel service in conjunction with Teletext Ltd, Teletext on 4, on pages 400-499. In September 2007 the bilingual digital text service available on S4C Digidol was launched only to Freeview viewers in Wales. When the first area in Wales (most of South West Wales) completed its Digital Switchover on 9 September 2009, 'Sbectel' also ceased. Partly it has been replaced by service pages from s4c and bbc on the internet, as: Sbectel Sbectel () is the name of S4C's former ancillary teletext service. It was named after the Welsh language S4C programme magazine called Sbec (Welsh for 'peek') which was originally