Even many Brexiteers believe a system of permits will have to be developed for industries that have relied on, in particular, cheap Eastern European workers since the E.U. was expanded in the early 2000s. The fruit-picking industry is heavily lobbying lawmakers, because 95% of its seasonal workforce are from the E.U. However, there is the prospect they will not want to stay if the pound remains weak against the euro. It could prove more financially rewarding for them to exercise their free movement rights in other wealthy E.U. countries.