All in all it's just another brick in the wall

The wall in question being the one between the function room and old dining room. It's built of brick, weighs around 3 tons and supports the bedroom floors above. It is held up by a wooden floor of great antiquity whose supporting joists are "stressed to the limit" to quote the structural engineer. (That's the printable part of his report). So as soon as we get quotes in, there will be some steel girders installed beneath it which will stop it moving any further. Levelling the floor will come later.