Babylon Park London

If your kid is obsessed with arcades, this place will absolutely do the job. There’s a solid mix of games alongside an indoor roller coaster, which is genuinely a fun touch for an indoor venue — not something you see everywhere in London. It’s geared toward the under-10s, so don’t expect anything too intense, but that’s kind of the point. Easy to get to on public transport, which makes it a decent shout for a rainy day when you need somewhere with actual things to do rather than just soft play.