England is/was an old old blend of mostly European cultures, until about 50 years ago when the mass immigration you refer to began

So there we have it, in your own words, WAV - fine for England to be a blend of Caucasians cultures & peoples but 50 years ago (the end of your golden age of England) the African-Caribbeans and Asians began to arrive and bang went the gleaming white neighbourhood. How can you write that and yet have the neck to maintain you're not a racist?