Lines have now reopened following passengers causing a disturbance on a train at St Albans earlier today.
As service recovers, Thameslink services running between London St Pancras International and Luton may be delayed by up to 15 minutes.
This incident is expected to continue to impact services until 09:45.
Customer advice:
Please allow an extra 15 minutes to complete your journey, and check station screens and planners for the latest information for your train.
Planning your journey:
Live departure boards can be found here, and you can also view a live map of the network here.
You can see an alternative route guide here.
Can you tell me more about the incident?
Some passengers were refusing to leave a terminating train at St Albans, meaning the train could not go into the depot as planned, blocking one of the lines. The situation has been resolved, and all lines are open, but there will be ongoing delays whilst services get back to normal running.
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.