text: The man, believed to be in his thirties, suffered neck injuries and was pronounced dead at the scene outside Southwark Park Primary School.
  One witness tweeted he saw "a lot of blood" in the area after the accident at Banyard Road at around 11:00 GMT.
  A Met Police spokesman said the incident had been referred to the Health and Safety Executive.
  Another witness, Charlie Brenland said he saw police cordon off the road, adding: "Witnesses and the police said there had been an accident with a worker on one of the trees.
  "Someone there said one of the tree surgeons had an accident with a chainsaw."
  Emergency services, including a London Air Ambulance attended the scene shortly after 11:00 GMT but were unable to save the man.
  A London Ambulance Service spokesperson said: "Sadly, despite the extensive efforts of our crews, a patient died at the scene."
  The Metropolitan Police said next of kin had been informed.
target: A tree surgeon has died after reportedly injuring himself with a chainsaw in south London.