Croydon South is a constituency[n 1] created in 1974 and represented in the House of Commons of the UK Parliament since 2015 by Chris Philp, a Conservative.

Croydon South consists of affluent suburbia, including a significant minority of large houses with gardens on the North Downs escarpment.

It has many well-to-do commuters taking advantage of the fast trains to the City and Gatwick Airport, plus a significant proportion of retired people.

Included are the suburbs of Purley and Kenley, home to the Kenley Aerodrome The village-like Selsdon – one of the few places in the seat where transport links are poor – has a place on the political map having spawned the phrase 'Selsdon Man',[citation needed] its swing and voters first seen as an ideal bellwether for the national swing by the Conservative Party.

Boundary changes before the 2024 election removed both Selsdon and Waddon from the seat and added the Park Hill & Whitgift ward, close to Croydon Town centre.