Engineering work is taking place between London Liverpool Street and Cheshunt, closing some lines.
Between 23:20 and 05:00 each night, services between London Liverpool Street and Cheshunt will be diverted to run via Seven Sisters. These services will call at Seven Sisters instead of Tottenham Hale.
Journey times will be extended as a result of the diversion.
Stations on the Tottenham Hale line are only a short distance from those on the Seven Sisters line. You can view maps that show routes between these stations on the Greater Anglia website.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner