Engineering work is taking place overnight between London Liverpool Street and Cheshunt, closing some lines.
Between 23:20 and 05:00 each night, all services between London Liverpool Street and Cheshunt which usually run via Tottenham Hale will instead be diverted to run via Seven Sisters. As a result, journey times will be extended.
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.