To minimise disruption, the new concourses will be built first, allowing them to take over operations from Terminal 2 when the existing building is demolished.
Inside, a dramatic staircase floats diagonally through what Bjarke Ingels describes as 'a single confident volume' akin to Kings Cross station's magnificent multi-arched concourse.
The novelty of the attempt, and the interest incident to the subject, had attracted such a concourse of persons that there was a veritable obstruction on the threshold of the establishment.
His majesty took not the least notice of us, although our entrance was not without sufficient noise, by the concourse of all persons belonging to the court.
After the rounds are finished, Mum usually has a walk around the concourse shops downstairs and returns exclaiming in hushed tones at the number of fast-food outlets.