Read about 20 + years ago.
Set in South Kensington during the war, when it was the arty area of London. A bomb fell on the house where the artists' studio was in the attic. It was a really atmospheric book.
I actually visited the street where it was set and there was indeed a newer building on the site of where that lovely old house would have been before the war. Quite chilling actually, and I'm so annoyed I can't even remember the name of the street!
Thanks in advance.