Purley Oaks railway station is in the London Borough of Croydon in south London, on the Brighton Main Line between Croydon and Redhill. All trains serving it are operated by Southern and it is in London Travelcard Zone 6. The station has four platforms: a disused side platform on the up fast line, an island platform with a disused face on the down fast line and an eastern face used by up trains, and a side platform on the eastern side used by down trains.