The author of the piece should add a times series on violent crime and shootings. These should decrease with time if the area is "up and coming"...
For violent crime, there is a direct correlation with black Londoners.
"In London in 2006, 75% of the victims of gun crime and 79% of the suspects were "from the African/Caribbean community."
https://en.wikipedia.org/wiki/Race_and_crime_in_the_United_K...
This does not solely reflect lower socioeconomic standing as Pakistani + Bangladeshi communities have higher levels of poverty, and similarly poor areas of cities in Wales and Scotland do not have the same proportionate level of gun crime that occurs in London.