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A bit out of date, but this interactive map of step free London is very good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 :
Bellingham is ThamesLink network, and the whole station is inaccessible to wheelchair access. See pictures and further accessible transport detail from links below.
Underground lines : ThamesLink
AccessAble Access Guide :
Accessibility friendly : No part of station is accessible. No access to car park or ticket office - flat entrance.
General description : See wiki
More comment : National Rail Guide & Maps