A fault at a level crossing in the South Acton area means trains have to run at reduced speed on some lines. As a result, trains may be delayed by up to 20 minutes or revised.
Disruption is expected until 19:30.
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.