There is a massive difference in the type of immigration you see in London and the type you see in a deprived, already suffering small town.
I live in Rotherham which has had more than its fair share of controversy and misery related to immigration.
In certain areas of Rotherham you have areas and estates that are.made up predominantly of eastern European migrants. The areas were run down to start with. Now they are much, much worse. Extreme poverty, very few English speakers, overcrowding, lessons laid on by the local council in a disused industrial unit (the irony!) On how to 'be british', a roma speaking PC patrolling around, aggression against each other, aaggressive behaviour towards other races, plus a long list of anti social behaviour and petty crime.
This is in an area that was previously occupied by a strong Muslim PakistanI community that rubbed along with the.locals who were mainly ex steel workers or in local industry. Not a social housing estate.
My bil was from that estate and he and my sister lived there for 5 years before moving. The house he inherited and owns outright is empty. He can't sell it because it is pretty worthless and he can't rent it out because only eastern Europeans want to live there. But there is a huge problem with rent not being paid and property being damaged and overcrowding in the properties.
And I know because I worked in lettings in the area.
So don't tell people like my sister and bil that there is no problem with immigration. Because there is. It's just conveniently hidden from view because no one has dared say anything because if you do you are racist.
That's why the leave vote happened. Because enough of these problems are happening up and down the country and no one actually listens or cares enough to do anything.