Sidcup is a suburban development in the London Borough of Bexley in South East London. It is located 11.3 miles (18.2 km) south east of Charing Cross.

Much of Sidcup is typical 1930s suburbia but it retains many parks and open spaces hinting at the great estates and large homes which once stood in the area.

The town contains a major hospital and two colleges. The town centre has a mix of high street stores, independent shops, a modern library, an internet café and several pubs. Sidcup is contiguous with Blackfen, Foots Cray, Longlands, and Lamorbey.