The junction between the District line tracks and what is now the National Rail loop to the main line is immediately to the south of the station. Two pairs of tracks (one pair for each operator) run through the station giving it a narrow Y-shaped arrangement with a shared central island platform and two separate platforms across the tracks for opposite directions. The street-level station entrance and buildings lie between the two arms of the Y. The isolated National Rail platform is disused and overgrown, but the National Rail platform on the central island is in working order. Although it is not served by regular trains it is very occasionally used for terminating services from Wimbledon in connection with engineering works. A barrier has been built on the central island platform across the part of the platform that forks off to the north-east and forms the right arm of the Y.