Engineering work is taking place between Cardiff Central and Bridgend, closing some lines overnight from Monday evening until Friday morning.
Monday to Thursday:
The 20:48 London Paddington to Swansea service will be diverted to run via Ninian Park, and will call at Bridgend and beyond a few minutes later than usual.
The 21:48 and 22:49 London Paddington to Swansea services will be diverted to run via Barry, and will call at Bridgend and beyond up to 25 minutes later than usual.
Tuesday to Friday:
The 03:46 Swansea to London Paddington service will start earlier than usual at 03:38, and will call at Neath, Port Talbot Parkway and Bridgend slightly earlier than usual. It will then divert between Bridgend and Cardiff Central to run via Barry, before departing Cardiff Central and beyond at the normal times.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner.