The carry is the constraint: a single stair with tight half-landings, or deck access with a long walk from the lift. A kitchen that has stood twenty years has settled into a shape of its own, and the new stone is cut to that shape rather than the original one. What comes off tells you what goes on.
The floor is a concrete slab screeded before the units existed, so it falls slightly and consistently towards the back door. Deck access or a single narrow staircase with tight half-landings means long pieces get walked up on edge, and the landing turn is checked before we commit. The house sets the order of work.
What turns up on the job sheets is interwar semi, postwar council estate, 1960s terrace and Victorian cottage. Each of those behaves differently once the old top comes off.
Access. Straightforward residential streets with a mix of drives and on-street parking; the hill down toward Erith is steep but the roads are wide.
There is nothing to visit in Northumberland Heath. Samples are posted free, the template is taken in your kitchen and the stone is fitted there too.