Not seen that photo before.



The main structure was demolishd in 1948.
With indecent haste.
It was said "to provide employment", and the Government gave subsidies (or compensation) for demolished buildings, although it's now agreed that it could have been rebuilt.
I still think they're the cellars (and foundations) we're looking at.
The tops of the walls seem level with the surrounding streets, etc.
Besides, wouldn't the ground floor rooms have been bigger?