Pubs are different, especially the bigger chains. They're generally too busy to police it. Big posh hotels can be good too - ask the lobby for the bar, then ask

Pubs are different, especially the bigger chains. They're generally too busy to police it. Big posh hotels can be good too - ask the lobby for the bar, then ask the bar staff for the toilet if it's not obvious. A 8-table local run cafe? I wouldn't dare ask