In Heathrow and Harmondsworth (TW6) the split is 42% flats to 58% houses over 3,318 households, and the stock is post-war.
With 42% private renting against 41% owner-occupied, most TW6 bookings land on a move-in day rather than a weekend.
Walls are cavity brickwork outside, over timber stud partitions inside, measured on the walk in from Heathrow Terminals 2 & 3 (Elizabeth line, Piccadilly) rather than assumed from a map, so the fixing that matters in Heathrow and Harmondsworth is chosen on site — the usual failure here is Heathrow and Harmondsworth gives us a four-hole bracket with two screws in a stud and two in fresh air, the reality on the streets around Harmondsworth Great Barn.
The airport itself plus the villages of Harmondsworth, Sipson and Longford beside it. That character decides the practical detail of mattress cleaning here far more than the borough boundary does. Heathrow and Harmondsworth is outside the Congestion Charge zone but inside ULEZ; our vehicles are compliant, so nothing is added for it.
On access, airport perimeter security, restricted vehicle zones and drop-off charges; the villages are quiet with driveways — one reason 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. Fitters travelling in use Heathrow Terminals 2 & 3 (Elizabeth line, Piccadilly).