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A short river (9 miles) flowing entirely within southern London. It rises at Waddon Pond (Croydon) and flows north to meet the River Thames at Wandsworth.
Wikipedia: Link

This tranquil National trust amenity is a former deer park is one of the few remaining estates that lined the River Wandle during its industrial heyday.

The river meanders through the park creating a haven for wildlife while the snuff mills, which generated the park's fortunes, still survive - with the western mill having been renovated into a learning centre.

A much-loved rural idyll, the park lies in a built-up area, and some of the surviving estate buildings are used as workshops by local craftspeople and artisans Link