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
BBC London BBC London BBC London is the BBC English Region producing local radio, television, teletext and online services in London and parts of the surrounding area. Its output includes the daily "BBC London News" and weekly "Sunday Politics" on television, the BBC Radio London radio station and local coverage of the London area on BBC Online and BBC Red Button. The region's headquarters are situated in the new eastern extension of Broadcasting House. The staple of the local television service is BBC London News which broadcasts daily on BBC One, appearing with short bulletins during "BBC Breakfast", after the "BBC News