Zone 2 rail and DLR station in Limehouse.
Limehouse Station has a direct DLR service to all DLR branches except the Stratford branch (for that, change at Poplar).
National Rail trains go inwards to Fenchurch Street and outwards to Bromley-by-Bow and thence out of London following the route of the District Line (though not on shared track).
OS X co-ord:
OS Y co-ord: