All the London railway stations :
Crouch Hill is on the Overground, and is not accessible to wheelchair users due to 24 stairs between street level and platforms. See pictures and further accessible transport in London detail from links below.
Underground lines : London Overground (Gospel Oak to Barking)
AccessAble :
Accessibility friendly : No.
General description : See wiki
More comment : National Rail Map & Guide This station has 24 stairs to platforms.