Clapham Common Children's Water Park

The splash pads and shallow pools here are proper chaos during summer holidays - in the best way possible. Kids will queue for the water jets without complaint, which is already a minor miracle. It's free to use, though you'll want to arrive early if the weather's decent because it fills up fast with local families.

Clapham Common itself is a sprawling green space in south London, and this water park tucked into it makes a decent pit stop if you're already planning to spend time on the grass. The setup isn't fancy - functional rather than flashy - but that's fine. Children aged three to eight get the most entertainment value; older kids might be bored after forty minutes. Adults can find a bench while the chaos unfolds.

If you're staying at Lovat Parks nearby, it's worth knowing about as a free afternoon option. Bring a packed lunch and towels. The changing facilities are basic but adequate. Go midweek in term time if you want to avoid the absolute crush, or accept you'll be part of a small crowd and arrive with patience ready. Parking around the Common can be tight on hot days, so aim for mid-morning rather than noon.

It's not a destination in itself, but as a bonus activity during a park holiday in south London, it does the job without costing you anything.