Buses replace late night / early morning services between Port Talbot Parkway and Swansea / Llanelli / Carmarthen from Monday 7 to Thursday 10 September
Engineering work details
Starts Monday 07 September 2026 to Thursday 10 September 2026
Train operators affected
Route(s) affected
Great Western Railway between London Paddington and Swansea
Transport for Wales between Cardiff Central and Carmarthen / Pembroke Dock
Description
Engineering work is taking place between Port Talbot Parkway and Swansea, closing all lines overnight from Monday evening until Thursday morning.
Great Western Railway:
Monday to Wednesday:
The 21:48 and 22:49 London Paddington to Swansea services will terminate at Port Talbot Parkway. A replacement bus will run from Port Talbot Parkway to Neath / Swansea.
Tuesday to Thursday:
The 03:46 Swansea to London Paddington service will start from Port Talbot Parkway at 04:05. Earlier road transport will run from Swansea at 03:18 to Neath, connecting with the amended train.
Transport for Wales:
Monday to Wednesday:
The 21:07 Pembroke Dock to Cardiff Central service will be diverted between Llanelli and Baglan, and will not call at stations via Swansea. A replacement bus will run from Llanelli to Cardiff Central, calling at all stops via Cardiff Central.
The 23:20 Cardiff Central to Carmarthen service will be diverted between Briton Ferry and Llanelli, not calling at stations via Swansea. A replacement bus will run from Port Talbot Parkway to Carmarthen, calling at all stops via Cardiff Central.
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 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.
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