Amended service in the Carmarthen area on Sunday 7 December: buses replace trains between Carmarthen and Swansea
Engineering work details
Starts Sunday 07 December 2025 to Sunday 07 December 2025
Train operators affected
Route(s) affected
Great Western Railway between Carmarthen and London Paddington
Transport for Wales between Fishguard Harbour and Swansea, between Milford Haven and Carmarthen / Newport (South Wales) / Manchester Piccadilly, between Pembroke Dock and Carmarthen, and also between Carmarthen and Swansea / Manchester Piccadilly
Description
Engineering work is taking place in the Carmarthen area, closing all lines until approximately 13:00 on Sunday 7 December.
Great Western Railway
The 10:27 Swansea to Carmarthen service will not run. It will be replaced by earlier road transport which will depart Swansea at 10:00, calling at Llanelli, Pembrey & Burry Port and Carmarthen. It is expected to arrive at Carmarthen for 11:12.
The 11:25 Carmarthen to London Paddington service will start from Swansea. Road transport will depart Carmarthen at 11:56, calling at Pembrey & Burry Port, Llanelli and Swansea. It is expected to arrive at Swansea for 13:13. This will allow customers requiring stations to London Paddington to connect with the 13:23 Swansea to London Paddington service.
Transport for Wales
Before 13:00:
Fishguard Harbour - Carmarthen services will run between Fishguard Harbour and Whitland only
Milford Haven - Carmarthen services will run between Milford Haven and Haverfordwest / Whitland only
Buses will be available between Whitland and Carmarthen
Buses will replace trains between Pembroke Dock and Carmarthen
Buses will replace trains between Carmarthen and Swansea
Check before you travel:
You can plan your journey using the National Rail Enquiries 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 set-down 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.
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