Taken from an official survey
There were an estimated 80,000 prostitutes as well as uncounted thousands of amateurs. Many of the professional girls were under 15; and more than half worked in brothels of which there were about three thousand in all, the most squalid being down by the river. In certain areas, every room in every house was given over to prostitution. The girls in those areas, if not prostitutes already would, as likely as not, soon become so. A police superintendent recorded that elderly gentlemen could be found in every room with two children in each bed. and so on.....
for those amongst us who have no knowledge of poverty, this may come as a surprise