Charing Cross (; sometimes informally abbreviated as Charing +, Charing X, CHX or CH+) is a London Underground station at Charing Cross in the City of Westminster. It is served by the Bakerloo and Northern lines, and provides an interchange with Charing Cross mainline station. On the Bakerloo line, the station is between Piccadilly Circus and Embankment stations. On its branch of the Northern line, it is between Leicester Square and Embankment stations. The station is in London fare zone 1.
Charing Cross was originally two separate stations, known for most of their existence as Trafalgar Square (on the Bakerloo line) and Strand (on the Northern line). The Bakerloo line platforms were opened by the Baker Street and Waterloo Railway in 1906 and the Northern line platforms by the Charing Cross, Euston and Hampstead Railway in 1907. In the 1970s, in preparation for the opening of the Jubilee line, the two earlier stations were connected together with new below ground passageways. When the Jubilee line platforms opened in 1979, the combined station was given the current name. Jubilee line services ended in 1999 when the line was extended to Stratford.