The housing stock
What we are usually working with in Knightsbridge
This is a logistics job before it is a stone job, and the lift car is usually the single biggest constraint on the design. All of that is settled at the nesting stage, because a machined piece cannot be adjusted afterwards. Mitres are dry-assembled before the polisher touches them.
Some buildings insist all cutting happens off site with zero exceptions. Buildings run 24-hour security and a strict delivery protocol - vehicle booked in, ID for every fitter, protection down through the lobby and lift, and noisy works restricted to a defined window. Nothing gets cut on site in these buildings, so the template must be dimensionally exact including appliance clearances - one wrong cut-out means a full replacement slab, not a rework.
These kitchens are full of boxed soil stacks, gas risers and heating pipework, and the boxing usually stops short of the ceiling. Access panels that have to stay usable are cut around at the bench and not covered over on the day. Settled on the drawing, cut once.
The mix here is red-brick mansion block, prime new-build apartment and Victorian townhouse. Two of those can sit on the same street and quote a long way apart.
There is nothing to visit in Knightsbridge. Samples are posted free, the template is taken in your kitchen and the stone is fitted there too.