Robertson was the musical director of the British television pop music programmes, Six-Five Special (1957 BBC) and Oh Boy! (1959 ITV). He was responsible for writing and producing the pop song "Hoots Mon" (not so much a song, more an instrumental take on "A Hundred Pipers" with spoken interjections in a mock Scottish accent) by Lord Rockingham's XI, which stayed at Number 1 on the UK Singles Chart for three weeks in 1958.
