This tiny station is on the branch line from Ealing Broadway to Greenford, with trains to Paddington. It was opened in 1905 as Drayton Green Ealing Halt, shown on maps up to the 1940s (and small scale maps now) a little south of its present position.
Hanwell Community Centre has been in operation at this site since 1938. Its website is here. There was a threat to its existence a few years back, it seems, averted by the then Deputy Prime Minister. The fate of the building was still generating some heat as recently as 2007.