 Various rumours circulated for many years as to why, but the BBC never confirmed the reasons.However, in March 2007 John Byrne explained that the problem had been due to a performance of the song "Tutti Frutti" in one episode (not the title sequence) where Danny McGlone changes the lyrics to "here's the rub, she makes me sleep in a tub".This is a reference to an earlier scene where Kettles is coerced into letting McGlone stay at her flat, but insists he sleeps in the bathtub.