Yes, we do not know what proprtion of migrants want to be in the uk permanently ,it was suggested by someone on radio 4 tonight[ he had a conection with the UN=, that some mat only wish to be in the uk for 3 or six months[before returning home] , perhaps he suggested they could be allowed to work for three or six months doing agricultural casual work, before they returned home if that was their wish., performing those casual jobs, like fruit picking, that travellers used to do