Historically the London Tilbury & Southend Railway, with all points served within commuting distance from London.
MAIN LINE: Fenchurch Street-Shoeburyness
2 tracks Fenchurch Street-Shoeburyness
London Underground District Line parallels to north, Bromley-By-Bow to Upminster.
Ockendon (1 track)
All lines 2 tracks unless noted. All lines AC electrification.
Number Of Platforms/Tracks: 4
Platforms numbered south to north
Platform 1-4 - Main Line
Fenchurch Street Station
Wikipedia link containing further station information and history.
Zoomable Google Maps along the various lines.