Hi there, I am a member of the Cottons Fitness First, and contrary to the other posts, this gym is actually a Black Label, rather than Platinum. This means, even memebers of FF Platinum gyms cannot use this one, but if you are a member of Cottons you can use any other Fitness First. I pay £57.70 per month and this is without a corporate membership, so it may be cheaper for you. The main benefit for me of using Cottons over the other London Bridge one is that it is open on Sunday - LB is open Monday - Saturday, and the one at Monument, which is very close also is only Monday - Friday, but I imagine the costs would take this into account somewhat - Monument is also pretty small.
I am the MD for Soho Gyms. Not sure why our prices were not given out but we have always published them on our website http://www.sohogyms.com/index.php?page=how-much-long-term . In addition, we are happy for people to try our gyms first so feel free to contact any of our team.
Mike Crockett, MD Soho Gyms