"So You Think You Know...?" was an educational programme (with Magnus Magnusson and Cliff Michelmore) on various topics of interest, with guest stars. This episode was made one week before the wedding of Prince Charles and Lady Diana Spencer. The hosts were Magnus Magnusson and Cliff Michelmore. This episode's guests are Fiona Fullerton (Grand Duchess Anastasia in "Nicholas and Alexandra"), Angela Pleasence (Katherine Howard in "The Six Wives of Henry VIII", later Queen Elizabeth I in Doctor Who - "The Shakespeare Code"), Michael Jayston (Tsar Nicholas II in "Nicholas and Alexandra"), Vera Lynn, Robert Lacey, Malcolm Williamson.
