British cities have never quite engaged in the annual summertime exodus that takes place in their European counterparts. While the absence of school runs leads to moderately lighter traffic levels and university cities are noticeably quieter out of term time, London or Liverpool never quite experience the phenomenon of urban flight that occurs in or Madrid or Milan. 

This unique demographic trait, coupled with a natural British propensity to revel in the outdoors whenever the traditionally inclement summer weather allows, provides a rare opportunity to see British cities adapted for occasionally sun-soaked leisure and recreational pursuits. And there are two city features whose popularity has grown in recent years that provide an excellent backdrop for such pursuits to take place: roof gardens and public spaces. 

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