Apple Tree Café by Herne Hill
Tot Stars in Selsdon Ollie Pollie Play Cafe
Wacky Kingdom - Redhill Little Seedlings - Dobbies Garden Centre
Better Gym Crystal Palace has one. You don't need to be agym member as it's part of the cafe
The little steps stay and play at Woodmansterne sports club x
Abuela (soft play cafe) in Coulsdon Clubhouse in Caterham Boon Cafe in South Croydon Bounce at the Barn - in Flittons Garden Centre (lots of indoor inflatables) Dobbies soft play Depends how old your son is turning as to which of these may be more suitable!
Kids space in Croydon or family fun Zone in Sutton and kiddistop or jungle gym at tooting and Mitcham x