Dean & Matty's Swing2Us at www.swing2us.com is one of the original UK swingers sites. It's not to be confused with www.swing2us.co.uk who are an Adult Hub affiliate trying to rip them off (and in my opinion guilty of the common law offence of passing off).
The site has been around for absolutely years, when I originally joined it was a plain HTML site and you emailed Dean and he would then put your advert up. However they later made it a proper database driven site, introduced subscriptions for new member but allowed the existing members to have free access forever. Although it is now a pay site I'm not going attack it for charging fees because they make it completely clear that it's a fee paying site, there's no attempt to con people into thinking it's free in the way that sites like Swinging Heaven do.
Tragically, Dean died but Matty has done a great job of continuing the site. He has been greatly missed by all of us in the community.