Search london history from Roman times to modern day
A bit out of date, but this interactive map of step free London is very good
All the London railway stations :
National Rail and Tube line map.
National Rail lines : The Station is on the C2C line from Fenchurch Street towards Southend, via Barking.
AccessAble Access Guide :
Accessibility friendly : Yes.
General description : See wiki
More comment : National Rail Map & Guide, The station is step-free via ramps to access platforms. Station car park with 88 spaces and 2 disabled parking spaces.