By Sam Webb A man has been killed and another injured after a £250 million building collapse in an exclusive part of central London this afternoon. The worker, believed to be in his 30s, was killed in the accident at the former U.S. Navy building, in Grosvenor Square, Mayfair. A spokesman from London Fire Brigade said a mini-digger on the second floor of the six-floor building fell to the floor below. The victim was confirmed dead by emergency medics at the scene. The two men had fallen from the second floor to the first floor. Victim: A man has been killed and another injured after a building collapse in Grosvenor Square, an exclusive part of central London, this afternoon
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The man, believed to be in his 30s, was killed when a mini-digger fell
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He was working on the conversion of the former U.S. Navy building
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Another man was treated for minor injuries from the accident
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Police, London Fire Brigade and London's Air Ambulance at the scene
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The building is being converted into luxury apartments
Property prices in @placeholder have increased by a staggering 310 per cent since 2000, making it the most expensive square in London.