Engineering work is taking place overnight between Bridgend and Cardiff Central via Pontyclun, closing all lines.
The following trains will be diverted via Llantwit Major (Vale of Glamorgan line):
Sunday:
The 19:30 Manchester Piccadilly to Swansea will divert arriving at Swansea later than normally advertised.
The 21:15 Carmarthen to Hereford will divert arriving at Hereford later than normally advertised.
The 21:34 Milford Haven to Cardiff Central will divert arriving at Cardiff Central later than normally advertised.
The 22:30 Cardiff Central to Carmarthen will divert arriving at Carmarthen later than normally advertised.
Monday:
The 05:43 Swansea to Cardiff Central will arrive into Cardiff Central at 06:39 to connect with 06:46 Cardiff Central to Manchester Piccadilly service.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner.