All the London railway stations :
Enfield Chase is on ThamesLink, and is not accessible to wheelchair users to access platforms. See pictures and further accessible transport in London detail from links below.
National Rail : ThamesLink
AccessAble Access Guide :
Accessibility friendly : Not accessible.
General description : The Booking Office is accessible from the street. This is great if you do not want to travel anywhere. See wiki
More comment : National Rail Guide & Maps