In 1910 the British government decided to carry out a detailed survey and valuation of every building in the country. It was an enormous task and involved hundreds of surveyors up and down the land. The records of the survey can be inspected at the National Archives, which means that they are available to researchers, historians and anyone wishing to find out more about the places where their ancestors lived more than a century ago.
I used these records to find out more about the large business premises occupied by Charles Wells (the man who broke the bank) at 152-156 Great Portland Street, London.