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A bit out of date, but this interactive map of step free London is very good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 South West
AccessAble
Accessibility friendly : Yes.
General description : Hampton has level access to both platforms. Interchange between platforms is via a footbridge with 30 steps, or by the road (Allow 15 minutes for travel outside of the station). Boarding ramps are available on platforms. See wiki
More comment : National Rail Map & Guide