The euro has begun to strengthen a bit in the past month or so. The currency has been steadily climbing against sterling since late February.
There are a lot of mushroom men that are watching the currency movements like hawks, their daily outlook infected by the movements of the currency either up or down.
One suspects that when the Brexit article 50 motion is unleashed in the UK later this month, there will be another currency fluctuation to give the mushroom sector the collywobbles.