I believe the mystery success of Jasper Carrot's record: "Funky moped" was because the other side was a wicked and funny parody of children's cartoon "Magic Roundabout" including words that mainstream radio stations wouldn't broadcast so the other side was the one that got played on "Top of the Pops" or "Pick of the Pops" type programmes. The success of the unplayed side was by word of mouth, live performances and probably pirate radio stations, and was a favourite of students. Strangely, this one isn't in my collection!
RtS ["Time for bed" said Zebedee]