Engineering work is taking place between London Liverpool Street and Cheshunt, closing all lines via Tottenham Hale on Sunday morning / evening.
Before 08:15 and after 23:59 on Sunday, trains that usually run via Tottenham Hale will be diverted to run via Seven Sisters, with extended journey times.
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.