I live in Horthumberland.
One of my neighbours is a Romanian. I haven’t seen any mobs with pitchforks outside her house.
My other neighbours are from Kent, they seem quite happy as well.
In fact I think the OP is being absolutely ridiculous.
Like any small rural/coastal community that has undergone massive changes in the last 50 years and relies almost completely on tourism for it’s income, there are some issues, property prices being one of the main one’s. Some of the older locals still resent the changes but the younger ones accept things as they are and understand that this is how things are now.