• Pool layout changes by day: in term time the shallow 12.5m section is set up on Mondays, Thursday lunchtimes and all day Sunday, the best slots for beginners
• Under-8s swim with an adult in the water, and the front desk stops letting people in an hour before closing time
• UCPA swim lessons from age 6, one 45-minute class a week in term time, with sign-up at the front desk each term

Georges-Vallerey is the 50-meter pool built for the 1924 Paris Olympics, now under a wooden roof that slides open in good weather. A movable wall can split it into two 25-meter pools, and a moving floor sets the depth from 0.9 to 2.15 meters, so some days have a shallow end. It suits kids who can swim or are learning; there is no separate toddler pool.