This summer, Hobbledown Heath will host ‘Hobbledown Hullabaloo’ between July 24 and September 3. With both indoor and outdoor playgrounds, a series of play villages amidst woodland, and even mini animal farms, there is plenty to get excited about. Hobbledown Heath is London’s largest adventure playground, so arguably one of the greatest things to do with kids in London, especially during the summer holidays. Explore London’s largest adventure playground From exploring the underwater world at the London Aquarium to delving into the macabre history of the Tower of London, here’s the Secret London lowdown on what to do in London with kids. In fact there are so many things to do in London with kids this summer holiday that it was hard to whittle this list down. In a city of nine million people, you can guarantee that you’ll find something for everyone to enjoy.