Apologies, only just seen this. I didn't mean to imply that no 1900 houses have fallen down, just to say that the incredibly vast majority of them are still ar

Apologies, only just seen this. I didn't mean to imply that no 1900 houses have fallen down, just to say that the incredibly vast majority of them are still around today. Look at any city and you will see rows upon rows of ~1900s terraces. Still mostly upright. These typically only fall down when you let the roof go. This is in contrast to North America that at the same time was building their houses out of timber. Not only does the material need better maintenance, but the difference between tearing it down and building a new one and refitting is much less than with a double-layer brick build. People want to tear them down and build something better.