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A bit out of date, but this interactive map of step free London is very good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 :
Underground lines : National Rail Greater Anglia
AccessAble Access Guide :
Accessibility friendly : This station is accessible. There is a ramp to gain access to platform 1 and a possible steep ramp to gain access to platform 2.
General description : See wiki
More comment : National Rail map & guide