Coordinates: 51°30′27″N 0°07′23″W / 51.507466, -0.122981
Charing Cross is the name given to Charing Cross railway station and the surrounding district of Central London, England. It originates from the hamlet of Charing, where King Edward I placed a cross in memorial to his wife, Eleanor of Castile. It is officially recognised as the centre of London; distances to London are measured to the location of the original Eleanor cross built at Charing.

History
Legislation from the early 19th Century used Charing Cross as a central point for defining its scope. Its later use in legislation waned in favour of providing a schedule of local government areas and became mostly obsolete with the official creation of Greater London in 1965.

Official use as central point

Trafalgar Square
Soho
Holborn
Mayfair
Bloomsbury