In the film, we see Carle out with members from the Active Resistance to Metrication, whose undercover late-night operations involve changing road signs from metres and kilometres to yards and miles.
“They were mostly older men, Brexiters who said the English had used their own system for ever and they didn’t see why it had to change. They were real rebels, but ultra-polite and correct and very precise about how they pasted their stickers,” he says.
Road signs in Britain are in miles. By law they’re in miles.