Which London Underground station serves the most Underground lines, with six lines stopping there?

King’s Cross St Pancras is the London Underground station served by the most Underground lines, with six lines stopping there.

The station serves the Circle, Hammersmith & City, Metropolitan, Northern, Piccadilly and Victoria lines. It is directly connected to King’s Cross and St Pancras main-line railway stations, making it one of London’s most important interchange points.

The Underground station’s history began with the Metropolitan Railway in 1863. Later lines and extensions turned the area into a major interchange, while the adjacent main-line stations developed separate but closely linked national and international rail services.

The six-line total counts London Underground services, not every railway service available at the wider transport complex. Thameslink trains use St Pancras station, and national rail services use King’s Cross and St Pancras, but those are not additional Underground lines.