Before the floodlights are removed temporary cables are placed across the stadium to keep the towers stable. The lights are then taken down in pairs. Each pair of lighting towers is lifted and lowered to the ground using cranes with a 600 tonne lifting capacity.
Work to construct the new 45,000sq metres roof begins in the spring. It will be completed by spring 2015 when final preparations for the Rugby World Cup will take place including installing concessions, toilets, turnstiles and hospitality areas.
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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.