Railway station in Travelcard Zone 3 opened 1868.
It was opened, originally as Haydens Lane, by the Tooting, Merton & Wimbledon Railway (itself jointly owned by the London and South Western Railway and the London, Brighton and South Coast Railway) on 1 October 1868. The ticket office is on the up side of the station; the original station buildings were redeveloped during 1991 and 1992 when land adjacent to the up platform was redeveloped for housing. Until the advent of Thameslink it was served by the London Bridge loop trains via Wimbledon.
More information on the Wikipedia page [1]. The TfL page is [2] and the National Rail page [3].