The Port of Dover has been closed, with freight as well as passengers unable to cross the Channel, due to the new strain of Covid concentrated in London and the South East. So how long before supermarket shelves are empty? A lot depends on the behaviour of British consumers.
As has been proved on a number of occasions, such as with lavatory paper at the beginning of the spring lockdown and with petrol during the fuel protests in 2000, you don’t need an actual shortage of goods to result in apparent shortages – panic-buying can lead to empty shelves within hours, if people are minded to stock up their freezers and larders to a level they would not normally do.
Yet Britain really is painfully dependent on imports of many kinds of food. We import 84 per cent of fresh fruit consumed here, 47.5

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