Our LO loved the seale Haynes ‘Hydro hub’ on the outskirts of Newton Abbot. They have limited spaces so was never busy which also meant we got a baby change cubicle afterwards without having to race to it or wait, that was also nice and warm.
Fort Stanford in plymstock is 32 You don’t have to be a member £6 just book the family swim session.
A friend of mine goes to the life centre, other than that the only other one I can think of is fort stamford in Plymstock but I don't know myself as I havnt taken my little one to a pool yet xxx