Have recently been doing a bunch of Bing tracing and then walking the area for address details, in a variety of locations.
Over Christmas I did the village I was staying in, Devauden:
The un-labelled ones are house names rather than numbers. Will get addr:housename to render shortly, but need to get that tag into the default.style file first so DB can import it.
Then plenty of extra detail in my local Borough, Enfield:
Progress is shown by this snapshot of a couple of weeks ago, which shows the black for OS_OpenData tracing and red for Bing tracing:
Finally I worked in Chigwell recently for a day and managed to survey one small estate whilst I was there - my least favourite surveying type, with all the little ginnals, and weird numbering systems on the larger blocks of flats: