Brexit and the booming British strawberry

British consumers are eating more than twice as many strawberries as they did 20 years ago. A big part of the reason for this, say farmers, is the army of East European workers flown in each year to pick them, which has helped keep prices down. What's going to happen after Brexit? Not so long ago you could only buy British strawberries in June and July. They were a treat to be enjoyed during Wimbledon.