The court was shown CCTV footage of the killers stalking their target for much of the night before striking outside the Woody Grill kebab shop in Kilburn.
Sabrina Gachette, who sat in court with her mother throughout the trial, said:
Seeing that was scary. How many times did they see us but not once did I see them. They knew there was girls out there.
More top news
Witnesses told ITV News a brawl broke out in the crowd after hecklers shouted racist abuse at the 74-year-old soul singer.
The figures were obtained by a Freedom of Information requests by Caroline Pidgeon, Liberal Democrat London Assembly transport spokesperson.
A 15-year-old school boy has been stabbed 'five or six times' on his first day back at school in north London after the summer holidays.