Going to NZ, Canada, USA and the UK doesn't really count for you you know, afraid to run into people of a different language and race?
over 250 languages are supposedly spoken in London and more than 2/3rds of children in london have at least on parent born o/s with % people being white British is under 50%. Likewise Vancouver and Toronto have significant Asian populations, ditto the US re sizeable minority populations.
So once again you are talking gibberish.