London’s Metropolitan Police said a man had been arrested following the stabbing in Croydon on Thursday morning (late Thursday AEDT).
British media reports said the stabbing happened near an Asda supermarket.
The ambulance service said one person was taken to a major trauma centre in London and four other people were hospitalized.
“We sent a number of resources to the scene, including ambulance crews, a paramedic in a fast response car, an incident response officer, members of our Tactical Response Unit and London’s Air Ambulance,” the service said.
Authorities didn’t provide a motive for the stabbing.
