A fault with the signalling system between Milton Keynes Central and Watford Junction is causing disruption to journeys running between these stations.
As a result, trains running between these stations may cancelled, delayed by up to 30 minutes or revised.
Disruption is expected to continue until 10:00.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
âââââââCompensation:
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.