Two people have died - including the pilot - after a plane plunged into a newly-built tower in central London this morning.
It is thought that low visibility conditions caused the plane to crash before plunging into the rush hour traffic below.
Witnesses reported low cloud at the time of the accident, suggesting the pilot may not have seen the crane in the bad weather conditions.
The plane crashed only 20 yards from a Vauxhall station, where eye-witnesses said people were frantically screaming as firefighters attended the scene.
One witness said the helicopter was 'rocking and shaking from side to side' before plunging to the ground.