A spokesperson for the London Ambulance Service said: "We were called at 7.57am this morning (Thursday April 10) to reports of a road traffic collision in Upper Street, Islington. We sent a number of resources to the scene, including ambulance crews, a paramedic in a fast response car, an incident response officer and London's Air Ambulance.
"The first of our crews arrived in one minute. Our crews treated four patients at the scene, before taking two to a London major trauma centre and two to hospital."
