Six people were stabbed and a police officer was slashed with a knife at the Arsenal Champions Parade on Sunday.
Police said 24 people were arrested after 500 officers were deployed on the streets.
Officers are hunting one attacker after a man was left with life-threatening injuries after being stabbed.
The man was taken to hospital after being stabbed near Arsenal’s Emirates Stadium on the night of the club’s Premier League title parade, police have said.
The incident unfolded shortly after 8.30pm on Hornsey Road, around a 15-minute walk from the north London stadium.
An air ambulance was scrambled to the scene before the man, aged in his 20s, was taken to hospital with “knife injuries”.
The Met Police said in a statement: “Police were called at 20:38hrs on Hornsey Road, N7, to reports that a man had been stabbed.
“Officers attended with the London Ambulance Service and London’s Air Ambulance and a man in his 20s was taken to hospital with knife injuries. He remains in a stable condition in hospital. His injuries are not thought to be life-threatening.
“No arrests have been made at this time and the investigation continues. Anyone with information is asked to contact police on 101, quoting CAD 7925/31MAY or Crimestoppers, anonymously, on 0800 555 111.”
