A spokesperson for Crossrail has told ITV London that the worker who has died was spraying concrete when a piece of concrete from the ceiling fell and hit him.
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Glen Hazel, who was an 11-year-old schoolboy, has a clear memory of the events of 1966.
The train driver was unaware that the knitted scarf was trapped and started to move as the Piccadilly line train departed at Holborn station
London mayor Boris Johnson has joined the chorus of voices attacking the decision to free notorious police killer Harry Roberts.