Merton is an ancient parish historically in Surrey, but which has since 1965 been part of Greater London. It is bounded by Wimbledon to the north, Mitcham to the east, Morden, Cheam and Cuddington to the south and (New) Malden to the west. The 1871 Ordnance Survey map records its area as 1,764.7 acres (7.1 km2).

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.