As far as other British cities are concerned, the underground railway running through the city center and across mersey river was also opened in 1886, which was electrified earlier than the London underground in 1903. It is the first underground railway in the world to realize electrification. However, the underground railway is still a Merseyside commuter railway belonging to the British national railway network, but it has not yet become an independent urban subway in administration and operation management.
1870, the first passenger-drilled subway was opened in London, which crossed the Thames near the Tower of London. However, this railway was not successful. After several months of operation, it was abandoned because the newly opened tower bridge in London replaced most of the passenger flow. The earliest existing subway was opened in 1890, also located in London, connecting the city center and the southern region.
Initially, railway builders planned to use a cable car-like propulsion method, but in the end, electric locomotives were used to make it the first electric subway, and the subway opened in London in the early days was fully electrified at 1906.