In Liverpool Street (EC2) the split is 98% flats to 2% houses over 4,914 households, and the stock is period conversion.
Because 48% of Liverpool Street is privately rented and 15% socially rented, a lot of EC2 work is agreed with a landlord or managing agent rather than the person opening the door.
Liverpool Street substrates run to with metal stud partitions between rooms — and dot-and-dab plasterboard over blockwork, with 15% social-rented stock locally, block access is agreed with the estate office first. Nothing is drilled until the wall has been sounded, because short screws that grip only the board and slowly lever it off the dabs, as the Liverpool Street stock goes, and with 48% of homes here privately rented, it sets the booking date as often as the job does is the mistake that costs a EC2 customer twice.
Liverpool Street 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 — commuter gateway with Broadgate offices on one side and Spitalfields market on the other — which is why a EC2 quote is not a City of London average.
Getting to the door matters as much as the job: broadgate estate has its own access rules and booked bays; surrounding streets are red-route controlled. Liverpool Street (Central, Circle, Elizabeth line, National Rail) is the nearest station, and one fitter for pictures and mirrors up to about 25kg; two for overmantels, full-length glass and anything carried up a communal stairwell.