I am born and raised in South Miami, 66 years ago. I have certainly experienced the change to the local “ culture and fabric”. A community is considered healthy when integration occurs by race, creed and color when introduced in balanced proportions. However, in Miami’s case, I can make a strong argument that the continued migration of various persuasions has radically changed the environment, some for the better, some not so much. I personally chose to leave some 19 years ago, relocating to Juno Beach.
In the case of the U.K., you never mentioned if you have visited or if you had any extended travels there. Again, I have and I will repeat my opinion that the change to their culture has been turned upside down, keeping in mind that it is a relatively small island country to begin with. We are seeing this change being played out in Europe where the steady stream of immigrants from mainly Norrh Africa and Syria has thrown local cultures into outright turmoil. Italy, Greece, Germany, France, all are looking to stem the tide of immigrants as a result.