Colindale Park

How many London parks can you say you've visited with a giant volcano in the middle? Ok, granted, it's not a real volcano, but it's still pretty cool nonetheless. It features climbing challenges all around the outside, which is sure to keep the kids preoccupied for a significant amount of time. There's also a gated toddler area, a swing,  a small slide, a slide that can be accessed via rope netting, a spinning cup, pipes you can shout down and an accessible roundabout.