The Green Flag Award scheme, managed by environmental charity Keep Britain Tidy under licence from the Department for Levelling Up, Housing and Communities, recognises and rewards well-managed parks and green spaces, setting the benchmark standard for the management of green spaces across the United Kingdom and around the world.

The historic Walled Garden in Sunbury Park was built in the early part of the 18th Century. Following years of neglect, Spelthorne Council embarked on a restoration project of the two-acre garden in 1985. Now home to dozens of varieties of clematis, this 'hidden gem' provides a tranquil spot all year round.