Example image of eyePlorer eyePlorer map for 'Ceefax': Analog signal BBC Teletext Test Card F James Redmond (broadcaster) Independent Broadcasting Authority ORACLE (teletext) World System Teletext Prestel Antiope (teletext) BBC Micro Telesoftware BBC One BBC Two Sky Digital (UK & Ireland) BBC Red Button Freeview (UK) IPTV Channel 4 ITV Teletext Ltd. CEPT1 News Easy listening BBC News (TV channel) 1997 November 9 Ceephax Acid Crew Peruvian earthworms BBC London Roy Essandoh Vin Ray BBC West Midlands Crazy Gang Electra (teletext) Gareth Herincx List of teletext services NABTS Pete Clifton John Saunders (chess player) BBC South BBC South West BBC Yorkshire 1974 in British television BBC East BBC East Midlands BBC West BBC North West Richard Deverell 1972 in British television