Lines have reopened following a fault with the signalling system between London Paddington and Heathrow Airport / Reading. Trains may still be cancelled, delayed by up to 30 minutes or revised.
Disruption is expected until 14:30.
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.