All the London railway stations :
National Rail lines : The Station is a small halt connection between Romford and Upminster railway stations. The train runs back and forth about every half hour. There is a ramp, see picture to enter or exit the station. Do not travel to Upminster, if you want an accessible route!
Slope at Emerson Park station
Emerson Park gap and step onto train
AccessAble Access Guide :
Accessibility friendly : Yes. Apparently, there is a ramp for access to the train. If travelling to Upminster, there is no access from the platform up to the station, so this is not a viable option. All other platforms at Upminster are served by a lift, but not platform 6 which serves Emerson Park.
General description : See wiki
More comment : National Rail Map & Guide, The station is step-free via ramps to access platforms. This is an unmanned station.