King William Street tube station

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King William Street
Plaque marking the location of the station.
Location
Place City of London
History
Opened by City & South London Railway
Platforms 2
Key dates Opened 1890
Closed 1900
Replaced by Bank

King William Street was the original but short-lived northern terminus of the City & South London Railway (C&SLR), the first deep tube underground railway in London and one of the component parts of the London Underground's Northern Line. It was in the City of London, on King William Street, just south of the present Monument station. When the station was in operation the next station south was Borough and the southern terminus of the line was Stockwell.

King William Street opened on the 18 December 1890 and initially took the form of a large masonry station tunnel accessed from the surface by a lift shaft or spiral staircase. Two platforms on either side of the single, central track were provided - one for passengers entering and one for passengers leaving the trains. The station tunnel itself is situated beneath Monument Street and runs east-west across King William Street, ending beneath Arthur Street. The approach running tunnels had sharp curves and steep gradients in order to dive underneath the River Thames while remaining under public rights-of-way, in particular Swan Lane and Arthur Street. The combination of station layout and poor alignment of the running tunnels severely limited the capacity of the station and in the years after opening a number of initiatives were made to improve operations. In 1895 a central island platform with tracks each side was constructed to enable two trains to occupy the station at once; however, capacity remained restricted.

How King William Street might have appeared on the London Underground Map today if it had remained open
How King William Street might have appeared on the London Underground Map today if it had remained open

When the line was extended northwards to Moorgate, new running tunnels on a different alignment, but still beneath Borough High Street, were constructed running from St George the Martyr's Church, north of Borough station to a new station at London Bridge station and onwards to an alternative City station at Bank. Under the river Thames the present running tunnels of the northern line are situated to the east of London Bridge, whereas the King William St tunnels pass to the west of the bridge. The station closed on 24 February 1900.

The original station building was demolished in the 1930s although the parts of the station below ground were converted for use as a public air-raid shelter during World War II. Access today is via a manhole in the basement of a modern day office building (Regis House), where the original cast iron spiral staircase leads down to platform level. The original tunnels north of Borough remain, although when the Jubilee Line Extension was built in the late 1990s the original southbound tunnel was cut through as part of the construction works at London Bridge station. These running tunnels now serve as a ventilation shaft for the station, the openings for short connecting shafts which lead to the old running tunnels can be seen in the roofs of the Northern Line platform tunnels and the central concourse between them. A construction shaft between London Bridge and King William Street, beneath Old Swan Wharf, serves as a Pump Shaft for the disused sections of running tunnels. It is no longer possible to walk through between the two stations as the old C&SLR running tunnels have been blocked off with concrete bulkheads either side of the Thames.

Former Services
    Former Route    
Preceding station   London Underground   Following station
Borough   Northern Line
King William Street Branch
(1890-1900)		   Terminus

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Coordinates: 51°30′37″N, 0°05′13″W

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