A police statement warning those who would provoke trouble at a vigil being held by Mark Duggan's family follows concerns that the crowds would clash with football fans going to see Tottenham Hotspur play Crystal Palace, but the match is set to go ahead at 3pm.
On Thursday Britain's most senior police officer and Prime Minister David Cameron both urged supporters to remain calm at the vigil.
The commissioner of the Metropolitan Police, Sir Bernard Hogan-Howe, thanked the Duggan family for their public calls for peace.
He said: "A vigil is to commemorate Mark Duggan's death, that's what the vigil is about."It's a terrible tragedy that someone's lost a life in this case, and clearly the family want to register, I believe, their protest about the outcome of the inquest."
More top news
One hundred years after the First World War began, British taxpayers are still servicing the loans taken out to finance the conflict.
FIFA have deleted a video they published showing Crimea as part of Russia in a promotional video for the 2018 World Cup
A cat who survived a brutal beating because he looks like Hitler has battled back from the brink of death to make a full recovery.