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Amended 23:20 Cardiff Central to Carmarthen service from Monday 23 to Wednesday 25 March 

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Engineering work details

Starts Monday 23 March 2026 to Wednesday 25 March 2026

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Train operators affected

Route(s) affected

Between Cardiff Central and Carmarthen

Description

Engineering work is taking place overnight between Neath and Swansea, closing some lines.

The 23:20 Cardiff Central to Carmarthen service will be diverted, a replacement bus will run from Port Talbot calling at Neath, Skewen, Llansamlet 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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