Engineering work is taking place between London Liverpool Street and Cheshunt, closing all lines overnight from Monday evening until Friday morning.
Between 23:20 and 05:00 each night, trains that normally run via Tottenham Hale will be diverted to run via Seven Sisters instead.
Stations on the Tottenham Hale route are nearby those on the Seven Sisters route.
Check before you travel:
These changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.