West Ham United have unveiled their plans for the Olympic Stadium.
An automated system using drive motors will move all four sides of the lower bowl forward to bring the seats closer to the pitch, thus ensuring that the running track will not be visible when the stadium is in football mode.
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Camden Council is evacuating five tower in the Chalcots estate in north London, to allow "urgent fire safety works" to take place.
Scotland Yard said it was taking action under public order laws over the marches "due to concerns of serious public disorder".
The Football Association says it is hoped that the match will raise around £1.25million for the victims.