Non members costs £12 although once your a member under 25’s can get in for £5 mon-wed.
You don’t need to take anything you get a locker for your clothes etc and a towel…the staff will give you a tour around if you ask..they are very friendly.
Saturday night is the busiest time in general…with a broadest mix of guys there…but afternoons at the begining of the week may also be ok if you’re looking for younger guys (taking advantage of the discount )