"Most people don't realise that the House of Commons meets where there used to be a Roman Catholic Chapel
in the Palace of Westminster."
Did you know of the WMD threat to the House of Commons when you posted this? I heard about it today.
The original painting of the Madonna and Child that hung above the Altar in the Chapel is supposed to still be there behind the panelling directly behind where the Speaker sits. (I don't know if it was removed when they did an expansion to the Commons, but I think not.)