Willesden is an area in north west London which forms part of the London Borough of Brent. It is situated 5 miles (8 km) northwest of Charing Cross. It was historically a parish in the county of Middlesex, that was incorporated as the Municipal Borough of Willesden in 1933 and has formed part of Greater London since 1965.

The parish of Willesden remained predominantly rural up until 1875, when its population was 18,500. However, this changed with the opening of the Metropolitan Railway (later the Metropolitan line) station of Willesden Green on 24 November 1879. By 1906 the population had grown to 140,000, a phenomenon of rapid growth that was to be repeated in the 1920s in neighbouring areas such as Harrow. The Metropolitan line service was withdrawn in 1940, when the station was served by the Bakerloo line, and later the Jubilee line.