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'I heard a bang and saw the helicopter's body falling'

Michael Gavin saw the accident while he was standing at Vauxhall station.

I was facing the building when it happened and I heard a loud bang. The top of the crane was actually obscured by fog so I didn't see the impact.

But I heard a bang and saw the body of the helicopter falling to the ground along with pieces of the crane and then a large plume of smoke afterwards.

– Michael Gavin, speaking to BBC News

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