You can pay per session or through membership here...membership will seriously benefit you if plan on going regularly as all the classes (there are lot too) and most of the swimming sessions come free with it
The cafe is expensive and the furniture needs replacing also the drinks machine on the first floor always seems to be out of order
The gym is good and there are three pool (baby pool, general pool and diving pool) of which i vaguely remember having swimming lessons in and there are separate and communal changing rooms which i must add are separate from the gym ones ...I presume it's so there's less risk of a 'gymmer' (yes i just made that word up) slipping on a wet floor
It's open every day of the week too, apart from the pools are closed whenever their is a swimming gala their
membership is cheap in my eyes too and you get a discount if you are a student or on income support read more