AÂ fault with the signalling system between London Marylebone and Beaconsfield / Amersham is causing disruption to journeys between these stations.
Services may be cancelled, delayed by up to 30 minutes or revised.
We anticipate disruption will continue until 11:00.
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.