All the London railway stations :
Chigwell is on the Central Underground line, and is not accessible to wheelchair travellers due to there being stairs between the street and the platforms. See pictures and further accessible transport in London detail from links below.
Underground lines : Central
AccessAble Access Guide :
Accessibility friendly : Chigwell is not accessible to wheelchair users due to there being stairs between the street and the platforms.
General description :
More comment : Inclusive Britain Station Guide