The study was limited, but within its remit found almost 100% correlation.
That did not prove it was more widespread, but Straw, Cryer, Allibhai Brown, Wilmer and others confirmed it was true for many other cities and had been for many years.

These people are not racist and certainly not intellectually challenged, but you see yourselves as somehow above them.

In reality you are, in comparison, posturing, pontificating pygmies.
You are ridiculous