Engineering work is taking place overnight between Bridgend and Cardiff Central, closing some lines.
Sunday:
The 21:34 Milford Haven to Cardiff Central Service will divert via Barry arriving into Cardiff Central later.
Monday:
The 05:43 Swansea to Manchester Piccadilly service will terminate at Cardiff Central and connect into the 06:46 service from Cardiff Central for onward travel.
Check before you travel:
You can plan your journey using the National Rail Journey Planner.