Hmmm, what about Toronto? Vancouver? San Francisco? Los Angeles? Honolulu?

....all of those places would have white as the #1 ethnicity in any census...OK maybe not Honolulu.
My only point was why go somewhere thats similar to home.
The absolute worst vacation of my life was going to Cancun, it was just Florida with a slightly higher percentage of Mexicans.
All the mall chains, restaurant chains....it was awful.
Look I like the UK (I studied there) but honestly other than they drive on the wrong side of the road, they have a much more saner tipping culture and they can show boobies on network TV, its not all the different.
Of course its a much older culture with the castles and great military history, but in my mind its a place you go in your 60-80 year old travel period....its easy when you dont want/need as much adventure.
In my mind if you are young C or S America or SEA is a good place to start.
My 2 cents.