Engineering work is taking place between Hackney Downs and Cheshunt via Tottenham Hale until 08:10, closing all lines.
Before 08:10, trains will be diverted to run via Seven Sisters, and will not call at stations via Tottenham Hale.
Stations on the Seven Sisters line are within walking distance of those on the Tottenham Hale line.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner