Which London underground station was the first to use an escalator?

Earl's Court is a London Underground station on the District and Piccadilly lines. The station is in both fare zones 1 and 2. The station is located in the Earl's Court area of central London, with the eastern entrance on Earl's Court Road and the western entrance on Warwick Road (both part of A3220). It is a step-free tube station; Earls Court Road entrance provides lift access between street and platform.

On the Piccadilly line the station is between Barons Court and Gloucester Road. It is the major junction of the District line, with West Brompton, Kensington (Olympia) and West Kensington to the west, High Street Kensington to the north and Gloucester Road to the east.

The lift access was supplemented in 1911 by the London Underground's first escalators. These operated from the GNP&BR platforms up to new passageways beneath the sub-surface District platforms. "Bumper" Harris, a one-legged engineer, rode the escalators on the first day of operation to reassure passengers of their safety.