In Westminster and Whitehall (SW1) the split is 95% flats to 5% houses over 3,927 households, and the stock is period conversion.
The renter-heavy mix here (28% owned, 44% privately rented) means a SW1 diary swings between short-notice tenancy deadlines and appointments set a fortnight out.
Walls are with metal stud partitions between rooms, over dot-and-dab plasterboard over blockwork, the pattern behind 3,927 households inside the SW1 neighbourhood, so the fixing that matters in Westminster and Whitehall is chosen on site — the usual failure here is Westminster and Whitehall gives us short screws that grip only the board and slowly lever it off the dabs, where 28% owner-occupation means the same home is booked again rather than a new tenant each year.
Westminster and Whitehall sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate. What shapes the job more is the neighbourhood itself — government quarter around Parliament Square, Whitehall and Smith Square — which is why a SW1 quote is not a Westminster average.
On access, security cordons, camera-controlled streets and pre-notified vehicle access on many roads — one reason one fitter for a floating fit in a single room; two for glued or secret-nailed floors and any job over 25m² in a day. Fitters travelling in use Westminster (Circle, District, Jubilee).