Johnny Go Home was the title of 1975 TV documentary (in two parts, I believe - one was called Billy Two-Tone) about runaways in London and the perils of life in the big, bad city - rent boys, Piccadilly, amusement arcades, and so on. It was preceded by a couple of books on the subject called The Dilly Boys and Keep The Faith Baby. Jake Arnott would later put the theme to good use in his novel Johnny Come Home.
Johnny Come Home was also the debut single from the Fine Young Cannibals, on the runaway theme, which was accompanied by a ridiculously cool and impeccably attired video. Singer Roland Gift would a little later appear with Joanne Whalley in one of the great London films, Scandal.