A one-stop branch from Seven Sisters to Northumberland Park would be possible.
The Victoria Line's depot is on the surface between Tottenham Hale and Northumberland Park stations on WAGN's overground line out of Liverpool St. Some trains start or terminate at Seven Sisters in order to run from or to this depot.
It has therefore been proposed that services terminating at Seven Sisters run onwards to Northumberland Park surface station.
This was originally considered as a way to serve a proposed athletics stadium at nearby Pickett's Lock; that proposal fell by the wayside several years ago and this extension was considered poor value for money (Nov 2003). However, Haringey Council's Unitary Development Plan from September 2004 refers to the Victoria line extension, so it is not entirely scrapped.
No current news for this project.
Links & Sources