After a little consideration, I'm sure your building insurers know exactly(statistically) how many are collapsing/ remodeled to failure in an average Month in G.B.
I found the picture of the interior elevation of steel lintel over the ground floor window to the back yard that survived infilling interesting.
And the tower of Pisa center chimney, shows me $(pounds) spent on improvements, not maintenance...
Will the "council" spank the home owners if they hired unlicensed/permitted contractor? Your previous posts suggests every act leads to the HO owing massive fines for not dotting bureaucratic eyes and crossing tees In your Island Great Nation.