Above ground the rotunda walls are being formed with a twin wall timber studwork creating a 350mm wide cavity ready for insulating, and plywood lines for the windows
Below ground in the basement the insulation is being bonded to the waterproofing membrane rather than being screwed to remove the fixings altogether and so eliminate the cold bridging (& simplify the works). Any risk of the insulation moving or will be negated once the free standing timber studwork is installed. Obviously a shame to use oil based insulation, but below ground it is perhaps more robust as the waterprofing membrane is fairly air and vapour tight, definitely cheaper, provides an integral vapour control layer and thermal mass is not a benefit in this situation.
Photos by Edward Bishop (www.edwardbishop.me)