Goodness, user. Why hark back over 70 years? Wasn't there a British Empire then too?!
It's 2017 now and things are different.
You really cannot extrapolate history to today.
China and India were in a famine as I remember growing up in the 60's. Look at them now.
Thing is, life has changed and the world is globalisation now, whether you like it or not.
I would be more worried about the huge polarity between the rich and the poor still getting worse in UK today. I live in EU and not perfect but we take care of our vulnerable citizens.