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
TVNZ Teletext as TV One, TV2 and TVNZ U. The service was also available on privately owned station TV3. A separate Teletext service is available to Trackside viewers on page 600, this service has continued to operate following the closure of the TVNZ service. TAB horse was also available on the TVNZ service. TVNZ Teletext TVNZ teletext was the only analog teletext in New Zealand. It was also available on Freeview. It was launched in 1984 with funding raised in the 1981 New Zealand Telethon, to provide news and information for the deaf. The information service closed on 2 April 2013, but