It only takes one snow flake to fall at the Aldergrove Met Office in County Antrim between midnight on 24 December and midnight on 25 December for punters to get lucky.

BBC: Bets on for a white Christmas

Then the film crew revved up its generators and turned on their huge fans to blow fake potato-flake snow down the main street for the sake of consistency.

ECONOMIST: The past is a dark, cold place