An employee for Hearst TV, who works in the building where the workers are trapped, has tweeted that the lower three floors have been evacuated in case the scaffold collapses.
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After the ambiguity of "Brexit means Brexit", the PM delivered her clearest statement yet on her vision for the country's exit from the EU.
A report warned overcrowded streets could lead to a 'Hillsborough scale' tragedy.
The PM confirmed an end to the country's existing trading arrangements as she outlined her 12 priorities for negotiating Britain's EU exit.