Sydenham (London) railway station a National Rail station in the south London Borough of Lewisham and is in Travelcard Zone 3. Sydenham is served by London Overground's East London Line and Southern Metro services. The station is known as Sydenham (London) to distinguish it from Sydenham railway station, Belfast and is located on a part of the Brighton Main Line which is often known as the Sydenham Corridor.