Two or three years ago, the Tory MP Jonathan Gullis was ridiculed for describing himself as ‘someone who grew up on Dad’s Army and Porridge and loves those traditional programmes of the past’, even though he was born in 1990. The suggestion was that if you weren’t old enough to vote when Tony Blair left office, then it was rather strange to retain a fondness for sitcoms which completed their original runs in the late seventies.