There is a Wing Chun place just off Eastcheap, I think it’s called National Wing Chun Academy London.
I personally have just joined Gymbox, and now my MMA, BJJ and Muay Thai is included in my monthly fee. I technically start my New Year’s resolution in December when I joined but I could say the resolution is to keep it up. I have no doubt that I will though, I was out of training for a year and feel so much better already after these past few weeks.