Engineering work is taking place overnight between Carmarthen and Port Talbot Parkway, closing some lines.
Trains will be diverted via freight lines between Llanelli and Port Talbot Parkway. Replacement buses will run between Carmarthen and Port Talbot Parkway.
The 21:07 Pembroke Dock to Cardiff Central service will depart Carmarthen at 22:35 (6 minutes earlier than normal).
Check before you travel:
You can plan your journey using the National Rail Journey Planner.
Replacement bus travel advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use our Rail Replacement Services page.
You can find the pick-up and drop-off location of rail replacement services by checking station signage or by searching for your station on our Find a Station page.
Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.