Who would do all the farm labouring fruit and veg packing etc that is currently done by EU migrants? The things some Brits regard as immigrant jobs.
I might just suggest that a lot is work Brits CBA to do.
As it happens a lot of this work is in East Anglia which has always been the area where British market gardening is done. Near where I live there are a lot of EU citizens working in food packing for super markets on shift work basis. Who else would do this and what would the food retailers do without it?
Who gives a crap bamboo toilet paper