.... is built with the thickness of one house brick, and is supporting a
similar wall and floorboard joists on the level above (3 bedroom 1930's
house, wall between front reception room and hallway), is it likely that
I will demolish said house by hanging 30Kg of wall cabinet on it?

How do I establish what the maximum loading is for wall cabinets and
shelves on a particular wall? I realise this is somewhat of an open
ended question. I just don't want an open ended wall...

--
Adrian C