A GP who helped treat casualties following today's bus explosion outside the London headquarters of the British Medical Association has described the scene.

Dr Laurence Buckman, from the BMA's GPs committee, said the front of BMA House in Tavistock Square was splattered with blood and body parts were strewn across the road.

The building was turned into a mini hospital while casualties were moved away from the road and were waiting to be taken to hospital.

Dr Buckman told SocietyGuardian.co.uk that he was on his way to a meeting at the BMA and arrived 10 minutes after the bus exploded outside the building.

He said: "I arrived at the BMA just as the first ambulance arrived. My first impression was about the amount of blood. The whole of the front of the building was covered with blood - quite high up, I suspect that was because the upstairs of the bus had been blown off."