Editing Tattenham Corner line (section)

{{short description|Railway line in southern England}}
{{Use dmy dates|date=April 2022}}
{{Infobox rail line
| name                            = Tattenham Corner line
| image                           = Southern 377 608 at Tattenham Corner, 2021.jpg
| image_width                     = 300px
| caption                         = A [[Southern (train operating company)|Southern]] {{brc|377}} at {{stnlink|Tattenham Corner}}
| type                            = [[Commuter rail]], [[Suburban rail]]
| system                          = [[National Rail]]
| status                          = Operational
| locale                          = [[Greater London]]<br />[[Surrey]]
| start                           = [[London Bridge station|London Bridge]]
| end                             = [[Tattenham Corner railway station|Tattenham Corner]]
| stations                        = 
| routes                          = 
| daily_ridership                 = 
| open                            = 2 November 1897
| close                           = 
| owner                           = [[Network Rail]]
| operator                        = [[Southern (train operating company)|Southern]]
| character                       = 
| depot                           = 
| stock                           = [[British Rail Class 377|Class 377 "Electrostar"]]
| linelength                      = 
| tracklength                     = 
| tracks                          = 
| gauge                           = {{RailGauge|sg|allk=on}}
| electrification                 = 750 [[Volt|V]] [[Direct Current|DC]] [[third rail]]
| speed                           = 
| elevation                       = 
| map                             = [[File:Tattenham Corner line.png|300px]]<br />([[:commons:File:Tattenham Corner line.png|Click to expand]])
| map_state                       = uncollapsed
}}
The '''Tattenham Corner line''' is an {{cvt|8|mile|14|ch|km|adj=on}} railway line in [[Surrey]] and [[Greater London]], England. It runs from its western terminus at {{rws|Tattenham Corner}}, near [[Epsom Downs Racecourse]], to a junction with the [[Caterham line]] south of {{rws|Purley}}. There are intermediate stations at {{rws|Tadworth}}, {{rws|Kingswood}}, {{rws|Chipstead}}, {{rws|Woodmansterne}}, {{rws|Coulsdon Town}} and [[Reedham railway station (London)|Reedham]]. All seven stations are managed by [[Southern (train operating company)|Southern]], which operates all passenger trains. Most services run between Tattenham Corner and {{rws|London Bridge}} via {{rws|East Croydon}}.

The line was promoted in two parts by the Epsom Downs Extension Railway and the Chipstead Valley Railway companies. The first section, between Purley Junction and Kingswood, opened on 2 November 1897 as a single-track line. The [[South Eastern Railway (England)|South Eastern Railway]] (SER) operated all services from the outset. The SER took over the line in 1899 and was responsible for finishing its construction and the provision of double track. Tattenham Corner station finally opened on 4 June 1901, the day of the [[Epsom Derby]]. The [[Southern Railway (UK)|Southern Railway]] [[railway electrification in Great Britain|electrified]] the line using the 750 [[Volt|V]] [[direct current|DC]] third-rail system in 1928.