The emergency services are dealing with an incident between London and Stevenage, to allow teams to carry out their work all lines are closed. Trains running between these stations may be cancelled or severely delayed.
Major disruption is expected until 20:00.
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.