This article has better reporting:
A police spokesman said: "At this early stage it is believed a car, a grey BMW 3-series, was in collision with a pedestrian in Fife Road, Kingston.
"The car then drove off from the scene, turning the wrong way into Clarence Street before colliding with a number of pedestrians. The car then collided with a double decker bus.
"One woman, no further details, was treated at the scene before being airlifted to hospital.
"The other pedestrians are not thought to be seriously injured.
"The driver of the car is also being treated for injuries and will be taken to hospital - he has not been arrested."
NOT BEEN ARRESTED???!!! WTF NOT???!!!