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Amended late night / early morning trains in the Carmarthen / Swansea area from Monday 17 to Friday 21 November 

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Engineering work details

Starts Monday 17 November 2025 to Friday 21 November 2025

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Train operators affected

Route(s) affected

Transport for Wales between Carmarthen and Swansea / Shrewsbury

Description

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

Monday to Thursday:

The 23:20 Cardiff Central to Carmarthen service will terminate at Swansea. A replacement bus will run from Swansea to Carmarthen.

Tuesday to Friday:

The 04:38 Carmarthen to Swansea service will be replaced by a bus throughout.

The 04:47 Carmarthen to Shrewsbury service will be amended to start from Swansea at 04:52. A replacement bus will run earlier from Carmarthen at 04:15 to Llanelli, connecting with the train.

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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