On the programme today, the strange customs and conduct that make up ‘good manners’. Where do they come from? What purpose do they serve?

And how do they change from place to place?...We’ll serve up linguistics, civility, civilisation and some gender politics too.

(Image of English film actor Roger Moore opening the door of his Volvo for Isabelle McMillan in a scene from the television series 'The Saint' Credit: Getty Images)