The eastern sides of English cities tend to be poorer. This pattern can be traced back to the Industrial Revolution, when winds blew pollution east, causing the rich to flee west.
from /r/dataisbeautiful
英国城市的东边往往更穷。这种模式可以追溯到工业革命时期，当时的风把污染吹到了东部，导致富人向西逃亡。