Tonbridge swimming pool is brilliant. It has 3 pools, a baby pool with a few slides, a warm toddler pool, and a large pool which flows to an outside pool via a small gate/tunnel that you can swim through. The outside pool is not open during the winter months, but in summer is great for all as it has a long sloping exit/entrance where younger children are able to play and a grassy area to sunbathe with a few picnic tables and a small ice cream/snack bar.
There are plenty of changing rooms, with family sized, disabled, and ones with showers in them. There are loads of lockers too, although they're not very big for families. Lockers require a £1 deposit which you get back when you open the locker.
During busy days, the swimming pool uses a band system, but usually its normally not that busy during the day, just during the saturday splash around and obviously summer.
The pool also provide swimming lessons and there is a cafe serving hot food and drink where you can sit and watch the other swimmers read more