Engineering work is taking place between London Liverpool Street and Tottenham Hale, resulting in the closure of some lines.
Services scheduled to run between London Liverpool Street and Tottenham Hale before 11:20 will now be diverted via Stratford. Journey times will be extended by a few minutes in both directions.
Some services will depart London Liverpool Street up to ten minutes earlier.
Services from Stratford to Meridian Water will not operate until 11:20.
Hertford East / Cambridge services will call additionally at Lea Bridge, Northumberland Park and Meridian Water.
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.