This article examines children's spatial mobility in urban settings. Throug
h data from a study of children living in contrasting urban environments Lo
ndon and a lower-density new town, the article focuses on how children move
around in the public realm. The data show that there are significant varia
tions in how contemporary children use their public spaces. Children's free
dom to move around their neighbourhood was greatest in the new town. Girls
and minority ethnic children were more restricted in their use of urban spa
ce. Comparison with previous research suggests a decrease in independent us
e of public space for 10/11-year-old English children since the 1970s. It i
s argued that future debate about children's place in the city should move
away from 'the unitary public child'. Lack of attention to the different wa
ys children use their cities will hinder advances in social policies design
ed to enhance participation for all children.