Engineering work is taking place between London Liverpool Street / Stratford and Cheshunt via Tottenham Hale, closing all lines on Sunday morning.
Before 08:15, and after 23:55, trains that usually run via Tottenham Hale will be diverted to run via Seven Sisters instead. Stratford - Meridian Water services will not run.
Stations on the Tottenham Hale line are only a short distance from those on the Seven Sisters line.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner