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Buses replace trains between Cardiff Central and Swansea on Sunday 29 March 

See all service disruptions

Engineering work details

Starts Sunday 29 March 2026 to Sunday 29 March 2026

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Route(s) affected

Great Western Railway between London Paddington and Swansea / Carmarthen

Transport for Wales between Cardiff Central and Aberdare / Bridgend / Maesteg / Carmarthen / Milford Haven / Fishguard Harbour / Shrewsbury, and between Manchester Piccadilly and Swansea / Carmarthen / Milford Haven

Description

Engineering work is taking place between Cardiff Central and Port Talbot Parkway, closing all lines.

Great Western Railway:

Buses will replace trains between Cardiff Central and Swansea. Replacement buses will run direct between Cardiff Central and Swansea. For Bridgend, Port Talbot Parkway and Neath, you should use Transport for Wales replacement buses instead.

An amended train service will run between Swansea and Carmarthen.

Transport for Wales:

Before 12:30:

Buses will replace trains between:

  • Cardiff Central and Penarth (before 12:30)

  • Cardiff Central and Barry Island (before 12:30)

No trains will run via Fairwater (City line). You can use your tickets at no extra cost on Cardiff Bus services. An early morning replacement bus will run from Radyr at 09:46 to Cardiff Central.

All day:

Buses will replace trains between:

  • Cardiff Central and Maesteg via Pontyclun

  • Cardiff Central and Port Talbot Parkway via Pontyclun

  • Rhoose Cardiff International Airport and Bridgend

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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