Southfields is a suburban district in the London Borough of Wandsworth, England, situated 5.6 miles (9 km) south-west of Charing Cross. Southfields is located partly in the SW18 postcode area and partly in SW19.
The main residential area of Southfields is "The Grid". "The Grid" is a series of parallel roads that are crossed at right angles by a series of parallel streets - so named because of the grid layout of the streets. The roads run from Replingham Road, in the north to Revelstoke Road, in the south, and the streets run from Elsenham Street, in the west, to Astonville Street (although Merton Road to the east of Astonville is the border of "The Grid"). "The Grid" consists almost entirely of Victorian built terrace houses, some of which have been converted into flats in the past, though conversions are no longer permitted on The Grid owing to a change in policy by Wandsworth Borough Council. These Victorian terraced houses were built at the same time as the bordering terraced housing Wimbledon Park and the avenues to the south of The Grid originally had the same names as the streets in Southfields that led to them.
A restrictive covenant or covenants at one time prevented any pubs from being built in the Southfields "Grid" area. However, in the 1990s, the covenants were apparently judged either to be ineffective or non-existent and two pubs have opened in adjoining premises on the south side of Replingham Road.