Hatch End is an Overground station on the line to Watford Junction. Trains from here go in to London Euston station to meet up with the Northern Line, though it also catches a couple of Bakerloo stations (Harrow & Wealdstone, Wembley Central and Queens Park) if you want to be on that line. The next station north is Carpenders Park (which is step free) and south is Headstone Lane.
It's a reasonable station in Travelcard Zone 6 (out of a possible 9) with ticket barricades, a staffed ticket booth and Oyster readers.
Quite a nice station architecturally, I only saw it at night and my iPhone takes rather poor low light pictures. read more