i wouldn't say jamaicans run anything in london
there are some places like brixton full of them
of course on local scale, but almost all groups in london operate in a local scale, included turks in their neighbourhoods
Pretty much 75% of the Jamaicans in Brixton/London are old men, it's the Jamaican/African's children that run the streets of every predominantly black area in London, little teenagers that run around stabbing and shooting each other, pathetic really.
Most of those black gangs in London and Birmingham aren't exactly organized crime. They are mostly a bunch of kids stabbing someone for living in an area with a different postal code.
Organized crime over there are the Turkish/Kurdish heroin traffickers, Russian weapon traffickers and money launderers, Albanian human traffickers and -in the minority homegrown white areas- some British firms involved in armed robbery and drug trafficking. Yardies back in the day did have ( a small minority of) more organized crews, but lately black gangs is indeed all stabbing and almost no money-making.
