Whilst anecdotal, my answer comes from over 21 years of living in different parts of the UK: In general, there appears to be a inverse correlation between education and income and racism. read more
There was no clear area worse than any other for racist abuse in the UK, with the counties with the most tweets scattered around. Midlothian, East Ayrshire, North Yorkshire, Blaenau Gwent and Torfaen were the most prominent, with large parts of the south and Midlands at the other end of the spectrum. read more