A man has died after a building partially collapsed at a construction site on Grosvenor Square.
Police were called to the square in Mayfair at around 3.45 pm this afternoon.
The man, believed to be on his early 30s, who was working on the site, was pronounced dead at the scene.
At least one other person has been injured, police confirmed.
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The victim was hit as she crossed the road at a pedestrian crossing in Tulse Hill.
The 24-year-old was unarmed and the incident is not being treated as terror-related.
Some platforms have been taken out of service with disruption expected to continue until the end of the day.