The Northern line is an underground railway in London, United Kingdom that is coloured black on the London Underground Tube map. The line's two branches carry 206.734 million passengers per year—the highest on the London Underground system. For most of its length it is built as a deep-level tube line. Despite its name, the Northern line does not serve the northernmost stations on the Underground network, although it does serve the southernmost st...
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The Northern line is an underground railway in London, United Kingdom that is coloured black on the London Underground Tube map. The line's two branches carry 206.734 million passengers per year—the highest on the London Underground system. For most of its length it is built as a deep-level tube line. Despite its name, the Northern line does not serve the northernmost stations on the Underground network, although it does serve the southernmost station and calls at sixteen of the Underground system's 29 stations south of the River Thames. There are 50 stations on the Northern line, of which 36 are underground.
The line has a complicated history and the current complex arrangement of two northern branches, two central branches and the southern branch reflects its genesis as three separate railway companies that were brought together and combined in the 1920s and 1930s. An extension in the 1920s used a route originally planned by a fourth company. Abandoned plans dating from the 1920s,...
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