The two old settlements grew slightly, notably by the building of council housing estates in Stanwell in 1919 and in Stanwell Moor in 1930. A private motor-bus served the village by 1926, and London Transport buses began in 1932. Poyle Halt on the defunct railway opened in 1927 and Poyle Industrial Estate Halt in 1953. Housing society and council house building began after the Second World War, including 300 pre-fabricated homes. From 1930, having formed part of a 19th-century Sanitary District then Rural District, Stanwell was administered by Staines Urban District (of the county of Middlesex) until its 1974 dissolution. In 1965 were it not for special provision Stanwell would have seceded with the rest of Middlesex to London: the Staines, Sunbury and Potters Bar Urban Districts transferred variously to Surrey and Hertfordshire, the most distant parts of the county from London.