Engineering work is taking place between Bridgend and Cardiff Central, closing some lines.
The 03:46 Swansea to London Paddington will depart earlier at 03:38. It will call at Neath, Port Talbot Parkway and Bridgend a few minutes earlier than normal, before diverting between Bridgend and Cardiff Central (via Barry, not calling). It will depart Cardiff Central at the normal time.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner