A fault with the signalling system between Waltham Cross and Cheshunt means that trains have to run at a reduced speed on some lines. Trains running between Tottenham Hale and Cheshunt may be delayed by up to 15 minutes or revised.
Disruption is expected until 10:30.
Customer advice
Trains are having to run at a slower, more cautionary speed, in order to ensure the safety of the railway.
Network Rail Engineers are on site and working on the signal.
Further information:
Advance purchase tickets holders will be allowed to travel on earlier or later trains if their booked service is cancelled.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
Compensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.