14th March update
The latest news from the development is that the builders are preparing to break through the final section of the archway from the Hall into the basement below. The drain pipe you can see was exposed during excavation – something they missed in the surveys by perhaps only a few centimeters! This will now be re-routed through the brickwork down to the drains at ground level. The last photo shows the view from inside what will be the Hall extension; overlooking Princes Street Gardens it will be simply stunning!