The A400 road is an A road in London that runs from Charing Cross (near Trafalgar Square, in London's West End) to Archway in North London. It passes some of London's most famous landmarks.
The Northern line (Charing Cross and High Barnet branches) runs beneath the A400 between Charing Cross and Archway stations. Between Charing Cross and Euston Road (Inner Ring Road), the road is in the London Congestion Charge zone.
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Great Russell Street is a street in Bloomsbury, London, best known for being the location of the British Museum. It runs between Tottenham Court Road (part of the A400 route) in the west, and Southampton Row (part of the A4200 route) in the east. It is one-way only (eastbound) between its western origin at Tottenham Court Road and Bloomsbury Street.
The headquarters of the Trades Union Congress is located at Nos. 23–28 (Congress House). The street is also the home of the Contemporary Ceramics Centre, the gallery for the Craft Potters Association of Great Britain; as well as the High Commission of Barbados to the United Kingdom. The Queen Mary Hall and YWCA Central Club, built by Sir Edwin Lutyens between 1928 and 1932, was at No 16-22 (it is now a hotel).