A survey of almost 2,000 parents of kids ages 5 to 11 in Britain found that most parents arenât letting their kids play outside, unsupervised, until age 11, The Guardian reports. This is despite the fact that when the parents were growing up, they headed out to play at around age 9. Tim Gill, author of âUrban Playground: How Child-Friendly Planning and Design Can Save Citiesâ and longtime champion of more freedom for kids, said the study shows âthat British children have been subject to a gradual, creeping lockdown over at least a generation.â He added, âThanks to the pandemic, we all know what lockdown feels like.â