Tattenham Corner line climbing to the high ground at Tattenham Corner. The line is primarily a commuter route, but the station at Tattenham Corner was built to serve the Epsom Downs Racecourse, with large numbers of extra trains for The Derby on Derby day. There is also a railway terminus at Epsom Downs, about 2 km north of the racecourse, which was built by the London, Brighton and South Coast Railway and opened on 22 May 1865. Oyster and contactless payment cards are valid for travel on the entire length of the route. The line from Purley to Tattenham Corner is located entirely
Tattenham Corner line eventually began in 1896 and on 2 November 1897 a single-track line to Kingswood (originally "Kingswood and Burgh Heath") was complete. In 1899 Sir Cosmo Bonsor formed a private syndicate to have the line extended from Kingswood to its current terminus at Tattenham Corner in order to catch the racegoing traffic. By Derby Day on 4 June 1901, the extension to Tattenham Corner was opened, during which time the line was also upgraded from single to double track. The Chief Engineer to the Chipstead Valley Railway was Lt Col Arthur John Barry. The line was third rail electrified by Southern