In Bermondsey (SE16) the split is 88% flats to 13% houses over 23,919 households, and the stock is mainly Victorian.
With 29% private renting against 24% owner-occupied, most SE16 bookings land on a move-in day rather than a weekend.
Walls are precast concrete panels and dense blockwork in Bermondsey, often with surface conduit, measured on the walk in from Bermondsey (Jubilee) rather than assumed from a map, so the fixing that matters in Bermondsey is chosen on site — the usual failure here is drilling blind into a panel with reinforcement or a buried cable behind it, as the Bermondsey stock goes, the reality on the streets around The Bermondsey Beer Mile and Maltby Street Market.
Former biscuit and leather factories converted into lofts, plus the Blue market. That character decides the practical detail of mattress cleaning here far more than the borough boundary does. Bermondsey sits inside the Congestion Charge zone as well as ULEZ, so both are itemised on the quote rather than absorbed into an hourly rate.
Getting to the door matters as much as the job: railway-arch loading limits, tight factory-yard entrances and permit bays. Bermondsey (Jubilee) is the nearest station, and one technician with a portable extraction machine and air mover on a single household booking; two technicians on HMO, student accommodation and serviced-apartment rounds where six or more mattresses are cleaned in a day.