"If we had disruption for four weeks, would you be able to feed your family?" The woman posing the question is a "Brexit prepper," somebody who has crammed their cupboards full of groceries, ...

After the government advised households to have enough supplies for at least three days in case of a national emergency, attention has turned to people whose doomsday preparations are a way of life.

The woman posing the question is a "Brexit prepper," somebody who has crammed their cupboards full of groceries, toiletries and household goods just in case U.K. shops run empty at the end of March.