Walk Victoria from Westminster Cathedral outwards and the inter-war pattern is obvious: 92% of the 3,844 households in SW1 live in flats, 8% in houses.
30% of households rent privately and 22% own, which is why shed assembly demand here peaks around tenancy changeovers and completion dates.
Victoria substrates run to often with surface conduit — and precast concrete panels and dense blockwork — the reality on the streets around Westminster Cathedral. Nothing is drilled until the wall has been sounded, because drilling blind into a panel with reinforcement or a buried cable behind it on these streets — the pattern behind 3,844 households inside the SW1 neighbourhood is the mistake that costs a SW1 customer twice.
Two streets can behave very differently in Victoria: station district of offices, theatres and new mixed-use blocks around Nova. The quote reflects the street the job is actually on. Victoria 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: coach-station traffic, red routes on Vauxhall Bridge Road and dock booking in the newer blocks. Victoria (Victoria, Circle, District, National Rail) is the nearest station, and one fitter for a small shed on a ready base; two for anything over 8x6ft or where roof panels need lifting together.