What about Scotland?
Slightly off the original topic, but still legal in Scotland, with apparently a push by Scot-PEP to try and have full decriminalisation. Pretty much the same as England - two people working in the same place is a brothel etc.

https://www.opendemocracy.net/beyondslavery/fraser-crichton/little-tolerance-for-zero-tolerance-prostitution-reform-in-scotland
Anyhoo.