Engineering work is taking place between Newport (South Wales and Hereford, closing some lines overnight.
Monday to Thursday:
The 22:22 Chester to Cardiff Central service will run up to 25 minutes later than usual from Shrewsbury onwards.
The 23:15 Cardiff Central to Abergavenny service will be retimed to run up to 18 minutes later than usual from Newport (South Wales) onwards.
Monday, Tuesday and Thursday:
The 22:21 Cardiff Central to Crewe service will run up to 25 minutes later than usual from Cwmbran onwards.
Tuesday to Thursday:
The 00:30 Cardiff Central to Hereford service will be retimed to run up to approximately 40 minutes later than usual from Newport (South Wales)
Wednesday:
The 04:33 Cardiff Central to Manchester Piccadilly service will be retimed to run up to 8 minutes earlier than usual
Check before you travel:
You can plan your journey using the National Rail Journey Planner.