The lesson we went to was held in a bar under some office blocks in the city (moorgate).
see here

There were about 15 people doing the beginner class, a few cute girls.

When the lessons finished it become free dancing. There were some seriously attractive girls in the club and they were having a great time being thrown around the dance floor by their partners.

At one point there was this cute blonde standing close to me and these two Aussie guys were trying to chat her up and this south american looking dude (wearing white suit / red tie) with a huge belly just walked up to her and took her for a dance. He must have been at least 65.

That club was cool. The vibe felt different to a normal night club as the girls were happy for guys to take them for a dance because the context was different.

Maybe that's just me and I felt different compared to a normal club. I like dancing with girls so I'm going to stick to it, even if some of them are really old.

Mark