 Complete the following phrase:  The final of the contest has been broadcast by BBC One previously BBC Television Service and BBC TV since the first contest in 1956, the first live colour transmission of the contest in the United Kingdom was the Eurovision Song Contest 1970, the first high definition broadcast of the contest began in 2007 when the contest was simulcast on BBC HD for the first time this continued until the channels closure. The final is also broadcast on radio, initially on BBC Light Programme until the 