Why would Brits of African heritage be any different from Americans of African heritage? Only the weapons are different, the results identical.
There are a few obvious differences, including:
1. Most UK blacks chose to settle there, or are descended from people who immigrated there by their own volition.
2. The UK welfare system hasn’t yet completely destroyed the family structure of UK blacks.
3. African immigrants to the UK know which country (vs continent) they came from.
4. Many remember who their enemies were, back in the Old Country, and some of them still want to settle scores.