All the London railway stations :
Ealing Broadway is on the District and Central underground lines, and is NOT accessible to wheelchair users due to stairs between street level and platforms. There is some change possible between the District and Central lines in the same direction, but mind the gap. See pictures and further accessible transport in London detail from links below.
Underground lines : Central, District
AccessAble Access Guide :
Accessibility friendly : No. (National Rail) No entrance/exit. You can change between District line (A step 190-257mm/gap 23-73mm) and Central line (B step 213-240mm/gap 97-113mm)
No stair-free entrance/exit. There is level interchange between Central and District lines.
General description : See wiki
More comment : Inclusive Britain Station Guide