I'm not bothered about the lettuce, but the insulin and blood products could be a bit of a drag.
It makes me smile to think that a good percentage who voted for Brexit did so to stop the free movement of Europeans, being sold the lie that leaving the EU meant no more immigration. The opposite is true, immigration must be maintained to supply the labour Britain needs, so fewer Europeans means more brown people, many of which are likely to be Muslim.
Not exactly what the Xenophobes and bigots voted for, but what they are going to get. That makes me chuckle.