The local government district of Brentford, the civil parishes of Heston, Isleworth, Norwood (also known as Norwood Green), and Twickenham, and part of the civil parish of Hanwell.

It was named after its medieval market town of Brentford, on the north (Middlesex) bank of the River Thames.

[1] The seat bordered the Ealing division to the north and north-east, Kingston to the south-east and Uxbridge from the north-west to south-west.

[3] In 1965 the area of this old division became parts of the London Boroughs of Hounslow, Richmond upon Thames and Ealing.

The political parties had been making preparations for an election to take place and by July 1914, the following candidates had been selected;