Teletext systems network in the mid-late 1970s. Due to the adoption of a common teletext standard (WST), the ORACLE system ceased in 1976. The name was retained for the service itself, that continued after that year using the WST standard. "World System Teletext" (or "WST") is the name of a standard for teletext throughout Europe today. Almost all television sets sold in Europe since the early ’80s have built-in WST-standard teletext decoders as a feature. It originally stems from the UK standards developed by the BBC (Ceefax) and the UK Independent Broadcasting Authority (ORACLE) in 1974 for teletext transmission, extended in 1976
Teletext Ltd. requiring the holder to provide the licensed service throughout the licence period. In accepting a licence, the broadcaster takes account of the likely cost of the obligations under the licence, and the value of the benefits associated with the licence, for the duration of the licence period." Teletext’s licence was for the licence period 2004 to 2014. The main Teletext service on Freeview was removed from channel 100 on the EPG on 21 June 2010. Teletext Holidays went digital in January 2011. In a deal between BBC Worldwide and Inview Technology Ltd, Teletext Extra was relaunched as Radio Times Extra