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A bit out of date, but this interactive map of step free London is very good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 :
Chessington North is on the South West rail network, and is not accessible to wheelchair users. See pictures and further accessible transport in London detail from links below.
National Rail : National Rail South West
Accessibility friendly : No.
General description : Chessington North is unsuitable for wheelchair users. See wiki
More comment : National Rail Map & Guide