How well do the cast of Dad's Army know the original show? Can they tell us the air date of the first ever episode? Can they name every member of the squad? And, more importantly, can they remember all the words to the theme song?
Find out below as Michael Gambon, Tom Courtenay and Bill Paterson give the absent Bill Nighy a rather tough time, Blake Harrison and Daniel Mays remix the theme, and Catherine Zeta-Jones gets confused by a tin of Spam.
Dad's Army is out now.