Mitcham is an area within the London Borough of Merton in Southwest London, England. It is centred 7.2 miles (11.6 km) southwest of Charing Cross. Originally a village in the county of Surrey, today it is mainly a residential suburb, and includes Mitcham Common. It has been a settlement throughout recorded history.

The River Wandle is a right-bank tributary of the River Thames in south London, England. With a total length of about 9 miles (14 km), the river passes through the London boroughs of Croydon, Sutton, Merton and Wandsworth, where it reaches the Thames. A short headwater – the Caterham Bourne – is partially in Surrey, the historic county of the river's catchment. Tributaries of the Wandle include Carshalton Ponds and Norbury Brook.