A student is critically ill in hospital after being stabbed by a gang who dragged him off his bicycle outside a west London Tube station.
The 19-year-old was riding with friends when he was attacked outside Kebabish takeaway in Northolt Road, South Harrow, at about 5.10pm on Friday.
Witnesses described the Kingston University student sprinting away from his attackers before collapsing with the blade lodged in his chest.
His family were yesterday at his bedside where he is in a critical condition on a life support machine. 
Detectives from the Met’s Homicide and Major Crime Command are investigating.
Police say the victim was attacked by a group of men, all aged in their teens or early twenties.
One friend described the teenager as a “lovely, enthusiastic young man with a smile permanently etched on his face” who was never involved in gangs. Another said: “He is very family orientated. He loves football and used to play for a local club.”
Several bouquets of flowers have been laid close to South Harrow Tube station where the teenager collapsed.
One was from a man who apparently tried to help him before the emergency services arrived.
It read: “Sorry there are people in this world who think it’s ok to take someone’s life. Sorry I couldn’t do more.”
The manager of the nearby Chicken Hut takeaway said shoppers ran inside to hide.
He said: “There was a huge group of teenagers running around outside, you couldn’t tell what was going on at first. One of them, a young boy, got stabbed with a knife but ran away not realising he had been stabbed. He was running to escape and then dropped to the floor suddenly. You could tell it was bad, the knife was still in his chest.”
Another 17-year-old male who sustained a cut was taken to hospital but later discharged.