No it won't.
Firstly the borders would not be closed to people moving here from Europe. But we would choose the skills we need. And yes people would come here from outside the EU. The ones that have the skills that we need and also on humanitarian grounds.
At the moment we have to let everyone in from the EU. We don't know about their past. We are getting no go areas. Some places are suffering badly. But you are OK because it hasn't happened where you live yet?
Doesn't it tell you something when you have people where they or their parents moved to this country are saying things need to change?
The low skilled People I am referring to won't be allowed in they won't meet the criteria. They are the ones who do the work the sick, lame, lazy or life benefits and criminals won't do.
We still need that workforce and it will be supplemented from outside the EU. The net effect will be no different the source will be different.
Most of the current immigrants come in do their work, some pay tax some don't (like us)
A lot take the money back home where it is worth a lot more.
Some like in all societies are bad news.
That's life, don't kid yourself that coming out of the EU will change this significantly