Brentford and Chiswick in Middlesex 1918–45Brentford and Chiswick was almost unchanged in a more developed subdivided county from 1945 to 1950Brentford and Chiswick in Middlesex 1950–74
This former constituency is toward the south-west of the historic county of Middlesex, in what is since 1965 west London. It was established as a division of the county of Middlesex, named after the towns of Brentford and Chiswick. In the 1885–1918 distribution of parliamentary seats it had been the eastern part of the Brentford division.
In 1918 the constituency comprised the Brentford and the Chiswick Urban Districts. In 1927 the two districts were combined to form a single Brentford and Chiswick Urban District, which in 1932 became the Municipal Borough of Brentford and Chiswick. In 1950 the boundaries of the seat were left unchanged, but it was reclassified as a borough constituency.
The seat rapidly became under-sized in electorate, see malapportionment – the area forming the seat was unusually declining in population, with in the 1918 to 1930 period the major loss of servants and lodgers among many of the larger houses particularly in Chiswick, and areas of reduction of overly dense housing in Brentford. Little space remained in the seat for new building compared with other seats to the west and north. The rest of the county saw major population growth. One key area of growth in this seat was instead in the number of commercial plants, yards and offices adjoining the 'Golden Mile', Brentford.[1]