jno
/// He's living in a Fawlty-style dream world where everyone's always been white and spoken his language, except for a few Cockneys. ///
I don't know how old you are, but I remember a time before WW2 when practically everyone was white, if you are not that old look at some old newsreels if you don't believe me.
The only foreign person I saw in those days was a Turkish chappie who would knock on doors selling carpets, that was until the American forces landed in England, along with other nationalities from around the world.
When war ended these chaps went back to their own countries, except for a number of Poles, then of course the Labour Party introduced mass immigration into this country and then England along with it's major cities altered considerably.