Originally named St. Paul's Station. Blackfriars Station is located on an alternate line serving London, which at Herne Hill connects with Chatham main line from Victoria Station. This line is part of a ThamesLink route, extending further north and north of St. Pancras Station.
MAIN LINE: Farringdon (ThamesLink)-Herne Hill
4 tracks Blackfriars-Loughborough Junction, 2 tracks beyond
From east to west, pairs of tracks identified as Fast, Slow.
All lines DC electrification.
Number Of Platforms/Tracks: 4 (2 through)
Platforms numbered east to west
Platform 1 - Thameslink South
Platform 2 - Thameslink North
Platform 3-4 - terminating
Wikipedia link containing further station information and history.
Zoomable Google Maps along the various lines, from Victoria Station and Blackfriars Station.