Liverpool Street had been designed to integrate with the expanding London Underground network, and served as a new terminus for the Metropolitan Railway (MR) which extended east from Moorgate. From 1874 to 1875, the MR used the Liverpool Street main line station as a terminus; the company opened its own station on 12 July 1875, initially named Bishopsgate. Subsurface platforms 1 and 2 were opened in 1875. A west-facing bay platform, platform 3, was formerly located to the south of platform 2; this was used by terminating Metropolitan line trains from the west. It was in use by 1896, and was still in use in 1974, but was redundant by 1994.