Maybe a swingers club would be better, you dont need to swing, but it will let your partner get to know a few people who might be intrested...maybe you dont need to pay for an escort after all.
I wouldn't bother with a 'swinging club
' if you're after quality.
I've been to a few in Yorkshire, 'Daniel House' at Doncaster, 'La chambre' at Sheffield, and another that was at Morley but has now shut.
I've never seen so many disgusting sights in one place!
If you go down the swinging route, probably best to join a web site, were you can cherry pick who meets your requirements.