How come?
I've been to the dee why one and I enjoyed their facilities when I went for like a month. Classes were good too.
There very inflexible and jack up their membership price's often meaning if your paying by the month you get slugged with the increase as well.
Class times can be shifted without notice and trainers subbed in and out.
If your unhappy with anything they do they won't help you in the slightest they only want your money.
They cost my mate (and his clients) a lot of money when they decided to shift his class time as his regulars couldn't make it and his new time slot was bringing in next to nothing despite the fact that not only did he want to do his class at the same time his clients did but the course they replaced it with didn't bring in as many clients the gym refused to budge.
When he walked away his clients had to take legal action to be released from their membership's.
Additionally some fitness first gyms have been in trouble before for refusing to take cash then signing people up for auto renewal without consent.