Each of those has its own habits. Chelsea and Kensington frontages are usually stucco over brick, where cracked or hollow render and worn mouldings are the first thing to go. South of the river, the stock brick is softer and takes badly to cement pointing, so repairs are made in lime and the face cleaned carefully rather than aggressively.
We work on listed and conservation-area buildings throughout the boroughs below, and we are happy to look at a facade from a few photographs before anyone comes out to site.