I was aware of the Paris Catacombs but not the ones in Nottingham mentioned in a comment following this article. I thought this was an interesting read.
https://www.theguardian.com/cities/2017/feb/06/beyond-kingdom-death-journey-subterranean-paris
https://www.theguardian.com/cities/2017/feb/06/beyond-kingdom-death-journey-subterranean-paris