Engineering work is taking place in the Cardiff Central area, closing some lines.
Trains between London Paddington and Swansea will be diverted to run via Ninian Park, and will call at stations between Bridgend and Swansea up to 7 minutes earlier or later than usual.
There will be platform alterations for services usually running through platform 3 and 4. All trains travelling to / from the West Wales will be diverted via Ninian Park. Some services will be retimed as all through trains at Cardiff Central can only use platform 4.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner.