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Buses replace late night / early morning trains in the Swansea area from Monday 18 to Friday 22 May 

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Engineering work details

Starts Monday 18 May 2026 to Friday 22 May 2026

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Train operators affected

Route(s) affected

Transport for Wales between Swansea and Llandovery / Carmarthen / Shrewsbury, and between Cardiff Central and Carmarthen / Pembroke Dock

Description

Engineering work is taking place in the Swansea area, closing various lines overnight from Monday evening until Friday morning.

Between 22:45 and 06:00 each night:

Trains between Swansea and Carmarthen will not run, and will be replaced by buses.

Trains that run via Swansea will be diverted between Port Talbot Parkway and Llanelli, and will not call at stations via Swansea. Replacement buses will run between Port Talbot Parkway and Llanelli via Swansea.

Trains between Swansea and Shrewsbury via Llanelli will be subject to extended journey times.

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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