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The London Underground is a metro system in the United Kingdom that serves Greater London and the home counties of Buckinghamshire, Essex and Hertfordshire. Its first section opened in 1863, making it the oldest underground metro system in the world – although in fact approximately 55% of the current network is above ground, as it generally runs on the surface in outlying suburbs.
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The system comprises eleven lines – Bakerloo, Central, Circle, District, Hammersmith & City, Jubilee, Metropolitan, Northern, Piccadilly, Victoria, Waterloo & City – serving 270 stations. It is operated by Transport for London (TfL).
Most of the system is north of the River Thames, with six London boroughs in the south of the city not served by the Underground. The London Borough of Hackney, to the north, has two stations on its border. Some stations at the north-eastern end of the Central line are in the Epping Forest district of Essex and some stations at the north-western end of the Metropolitan line are in the Three Rivers and Watford districts of Hertfordshire and the Chiltern district of Buckinghamshire.
There are two instances where two separate stations share the same name: there is one Edgware Road station on the Circle, District and Hammersmith & City lines and another Edgware Road on the Bakerloo line, and there is one Hammersmith station on the District and Piccadilly lines and another Hammersmith station on the Circle and Hammersmith & City lines. Although the Circle and Hammersmith & City lines station at Paddington is on the other side of the main line station to the Bakerloo, Circle and District lines station, it is shown as a single station on the current Tube map. It has been shown as two separate stations at different times in the past.
TfL plans to open six new stations between 2017 and 2020 as a result of extensions to the Metropolitan and Northern lines. One Metropolitan line station, Watford, will close due to its branch being diverted onto a new route. Two of the planned Metropolitan line stations, Watford High Street and Watford Junction, are currently served by London Overground.
Stations
Listed for each station are the line(s) serving it, local authority and the fare zone in which it is located, the date it and any earlier main line service opened, previous names and passenger usage statistics in millions per year.
Planned stations
Transport for London is currently planning extensions to the Metropolitan and Northern lines that will add six new stations to the network: four in Watford and two in Wandsworth. One current station, Watford on the Metropolitan line, will close as the branch that it is on will be diverted on to a new route.