When did the Jubilee line open on the London Underground?

The Jubilee line is a London Underground line. Opened in 1979, it is the newest line on the network, although some sections of track date back to 1932 and some stations to 1879. Its western end beyond Baker Street was previously the Stanmore branch of the Bakerloo line, while the new build was completed in two major sections: initially in 1979 to Charing Cross tube station in central London; then extended in 1999 with the Jubilee Line Extension to Stratford station in east London.

In 1975, when plans were under way to introduce the London Transport Silver Jubilee Bus fleet, the then Sales Manager of London Transport Advertising, Geoffrey Holliman, proposed to the Chairman of LTE, Kenneth Robinson, that the Fleet line should be renamed the Jubilee line. However, this idea was rejected because of the additional costs involved. Nevertheless, the project was subsequently renamed the Jubilee line for Queen Elizabeth II's 1977 Silver Jubilee following a pledge made by the Conservatives in the Greater London Council election of 1977. The original choice of battleship grey for the line's colour was based on the naval meaning of the word fleet; this became a lighter grey, representing the silver colour of the Jubilee itself.

The line was officially opened by the Prince of Wales on 30 April 1979, with passenger services operating from 1 May 1979.