Layout
The station lies in an east-west-aligned trench with cut-and-cover tunnels at either end. The modern entrance gives access from Aldersgate Street, through a 1990s building, to a much older footbridge leading to the eastern end of the platforms. To the north are backs of buildings that face onto Charterhouse Street, Charterhouse Square and Carthusian Street. To the south are the backs of buildings that face onto Long Lane. To the west is Hayne Street.
The station is mostly open to the elements, though there are some short canopies. The remains of the supporting structure for a glass canopy over all four platforms (removed in the 1950s) may still clearly be seen.
At the west end of the central island is a disused signal box. Also from this end of the platforms may be seen the beginnings of the complex of tunnels leading under Smithfield meat market. Livestock for the market was at one time delivered by rail and there was a substantial goods yard under the market.
Platform 1 is the most northerly, serving eastbound LUL services. Platforms 2 and 3 form an island platform. Platform 2 serves westbound LUL services. Platforms 3 and 4 are out of use, since the Moorgate branch is permanently closed.
Read more about this topic: Barbican Tube Station