A spokesperson said London Ambulance spokesperson was called just after 11pm last night to reports of falling masonry in High Holborn, in Central London
Paramedics treated four patients, and despite best efforts at trying to resuscitate her - one woman was pronounced dead at the scene.
A man in his mid-20s was taken to Royal London Hospital with leg injuries.
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Sixteen people were injured when a train crashed into a railway station buffer on Monday.
"Our ability to pre-empt or respond to threats will be eroded if we don't keep up with our adversaries."
"You are one of the silence breakers and we all owe you a debt of gratitude."