Thameslink is a mainline route on the British railway network, running from Bedford, Luton, St Albans City, Peterborough, Welwyn Garden City, London Blackfriars and Cambridge via central London to Sutton, Orpington, Sevenoaks, Rainham, Horsham, Three Bridges, Brighton and East Grinstead. The network opened as a through service in 1988, with severe overcrowding by 1998, carrying more than 28,000 passengers in the morning peak. All the services are currently operated by Govia Thameslink Railway. Parts of the network, from Bedford to Three Bridges, run 24 hours a day, except on early Sunday mornings and during maintenance periods.
New Cross Gate is a railway station in New Cross, London, on the Brighton Main Line and the London Overground. It is 2 miles 70 chains down the line from London Bridge and is about 600 m (660 yd) west of New Cross station. It is in Travelcard Zone 2, and is operated by London Overground.
New Cross railway station serves New Cross in south-east London, England. It is 4 miles 68 chains (7.8 km) down the line from London Charing Cross and is in London fare zone 2. The platforms are lettered rather than numbered to avoid confusion with those at New Cross Gate by staff who worked at both stations before privatisation of the stations in 1997. Platform D is used exclusively by London Overground services. Ticket barriers control access to all platforms.
Brockley railway station serves the south-east London district of Brockley and is on the main railway line between London Bridge and Brighton. It is 3 miles 56 chains down the line from London Bridge.
The Oxted line is a railway line in southern England. It runs from the Brighton Main Line at South Croydon in Greater London to Hurst Green Junction in Surrey, where its two branches diverge. The western branch continues via Lingfield to East Grinstead in West Sussex, whereas the eastern branch runs via Edenbridge in Kent to Uckfield in East Sussex. The line is named after the town of Oxted in Surrey and also serves parts of the London Borough of Croydon. The 18-mile-26-chain (29.5 km) South Croydon–East Grinstead section is electrified using the 750 V DC third-rail system and is double track throughout. The unelectrified Hurst Green Junction–Uckfield section is 24 mi 53 ch (39.7 km) in length and, south of Hever, is mostly single track.
Sanderstead railway station is on the Oxted Line in the London Borough of Croydon, 1 mile (1.6 km) from Sanderstead village. It is in Travelcard Zone 6, 12 miles 23 chains from London Bridge. The station is managed by Southern.
Purley railway station is in the London Borough of Croydon on the Brighton Main Line, 13 miles 29 chains (21.50 km) measured from London Bridge, in Travelcard Zone 6. It is a junction, with branches to Caterham and Tattenham Corner.
The Tattenham Corner line is an 8-mile-14-ch (13.2 km) railway line in Surrey and Greater London, England. It runs from its western terminus at Tattenham Corner, near Epsom Downs Racecourse, to a junction with the Caterham line south of Purley. There are intermediate stations at Tadworth, Kingswood, Chipstead, Woodmansterne, Coulsdon Town and Reedham. All seven stations are managed by Southern, which operates all passenger trains. Most services run between Tattenham Corner and London Bridge via East Croydon.
Reedham railway station is in the south of Purley in the London Borough of Croydon on the Tattenham Corner line. The local area is residential and the station is near the A23 Brighton Road. It is 15 miles 65 chains (25.4 km) measured from London Charing Cross. The Brighton Main Line is adjacent, but is not served by this station.
Sydenham is a railway station in Sydenham in the London Borough of Lewisham, South London. Originally opened in 1839, the station is located on the former Croydon Canal, which is now a branch of the Brighton Main Line, often known as the Sydenham Corridor. Sydenham falls within Travelcard Zone 3 and is served by London Overground and Southern. The station is 6 miles 32 chains down the line from London Bridge.
Anerley railway station is in the London Borough of Bromley in south London. The station is operated by London Overground, with Overground and Southern trains serving the station. It is 7 miles 47 chains down the line from London Bridge, in Travelcard Zone 4.
Norwood Junction railway station is a National Rail station in South Norwood in the London Borough of Croydon, south London, and is in Travelcard Zone 4. It is 8 miles 55 chains down the line from London Bridge.
Selhurst railway station is in the London Borough of Croydon in south London, 9 miles 31 chains (15.1 km) along the line from London Victoria. It is operated by Southern, which also provides all the train services. The station is in Travelcard Zone 4.
Kenley railway station serves Kenley in the London Borough of Croydon in south London. The station and all trains serving it are operated by Southern, and it is in Travelcard Zone 6, on the Caterham Line 16 miles 29 chains (26.3 km) from London Charing Cross. The station is served by trains from Caterham to Purley, East Croydon, London Bridge and London Victoria. It is the last station on this line located within the Greater London area, however Oyster fares are available up to and including the end of the line at Caterham.
The Arun Valley line, also known as the Mid Sussex line, is part of the Southern- and Thameslink-operated railway services. For the initial part of the route trains follow the Brighton Main Line, and at a junction south of Three Bridges the route turns westwards. It then runs via Crawley, Horsham and Arundel, before meeting the West Coastway line at Arundel Junction. Trains on the Arun Valley line then proceed to either Bognor Regis or Portsmouth Harbour.
Sunbury railway station serves the town of Sunbury-on-Thames, in the Spelthorne district of Surrey, England. It is 16 miles 64 chains (27.0 km) down the line from London Waterloo. The station and all trains serving it are operated by South Western Railway.
The Sutton and Mole Valley lines were constructed between 1847 and 1868 by the London, Brighton and South Coast Railway, the London and South Western Railway and the LBSCR-sponsored Horsham, Dorking and Leatherhead Railway.
The Caterham line is a railway branch line running from Caterham in Surrey to Purley in South London. It operates as a commuter service to London.
Whyteleafe railway station serves the village of Whyteleafe right on the border of Greater London and Surrey, England. It is 17 miles 58 chains (28.5 km) from Charing Cross. The station and all trains serving it are operated by Southern, and it is on the Caterham Line.
Staines railway station is on the Waterloo to Reading line and is the junction station for the diverging Windsor line, in southern England to the west of London. It is 19 miles 2 chains (30.6 km) down the line from London Waterloo. It serves the town of Staines-upon-Thames in Surrey, England.
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London transportportal 
