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Buses replace late night / early morning trains between Swansea / Llanelli and Carmarthen from Monday 2 to Friday 6 March 

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Engineering work details

Starts Monday 02 March 2026 to Friday 06 March 2026

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Train operators affected

Route(s) affected

Between Shrewsbury / Swansea / Cardiff Central and Carmarthen

Description

Engineering work is taking place overnight between Llanelli and Pembrey & Burry Port, closing some lines.

Rail replacement buses will operate between Swansea and Carmarthen between 23:45 and 06:30 each night.

Some buses will also operate between Llanelli and Carmarthen to connect to the Heart of Wales line.

The 04:46 Carmarthen to Shrewsbury service will start from Swansea at 04:54.

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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