It returned one Member of Parliament (MP) to the House of Commons of the Parliament of the United Kingdom by the first-past-the-post system.
This was a safe Conservative seat held by Sir John Hunt for the entire period of its existence.
The constituency shared boundaries with the Ravensbourne electoral division for election of councillors to the Greater London Council at elections in 1973, 1977 and 1981.
1974–1983: The London Borough of Bromley wards of Bromley Common, Keston and Hayes, Martin's Hill and Town, West Wickham North, and West Wickham South.
[1] 1983–1997: The London Borough of Bromley wards of Biggin Hill, Bromley Common and Keston, Darwin, Hayes, Martins Hill and Town, West Wickham North, and West Wickham South.