I would encourage you all to check out The Factory. It is a unique independently-owned gym with great dance classes. I've recently taken the Bollywood and Belly-dancing classes, both at the weekends. They were super fun, teachers friendly and patient. I left feeling high from the energy of dancing around and learning something new.
If you're looking for a new class, to get you through winter or just to learn something new, get fit and have some fun with it, I would recommend checking out this place.
15725.0 p hour
Upto UKP 320 per month
900 - 1200 p day