There is a fault with the signalling system at Cardiff Queen Street, disrupting journeys running through this station.
As a result, trains may be cancelled, delayed by up to 60 minutes or revised.
This issue is expected to continue to impact services until 10:00.
Customer advice:
You may use your ticket on Cardiff bus services on routes for Coryton and the City line at no extra cost.
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.