5 Somers Crescent, London W2: George Martin.

Here it was, at 5 Somers Crescent, that George Martin lived for around 20 years, from 1966 on. According to the Beatles' London, "it's likely that all the Beatles came here and certain that Paul did on many occasions."

George, naturally, had a piano installed, possibly in this very room, upon which arrangements for strings etc. would be composed. By "this very room", I mean the living room above, obviously, and not the kitchen, below, although who knows?

There are balconies on either side of the aforementioned living room:

Actually, this place reminds me a bit of Whaddon House, where Brian and George and Ringo all lived for a time. Both Whaddon House and Somers Crescent would have represented the height of modernity in the early 1960s.