As a result of these works, several late-night and early-morning train services will be affected, with rail replacement transport operating on some routes throughout the week.
Service Changes
Monday to Thursday:
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The 23:20 Cardiff Central to Carmarthen service will terminate at Llanelli.
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Replacement road transport will operate between Llanelli and Carmarthen.
Tuesday to Friday:
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The 04:38 Carmarthen to Swansea service will be cancelled throughout, with replacement road transport running in its place.
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The 04:46 Carmarthen to Shrewsbury service will start from Llanelli at 05:12, instead of Carmarthen.
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Replacement transport will run from Carmarthen to Llanelli to connect with this service.
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Passenger Information and Travel Advice
Passengers are advised to check before travelling, as journey times may be extended during this period.
You can plan your journey in advance using the National Rail Enquiries Journey Planner.
For detailed guidance on travelling via rail replacement services — including accessibility, luggage, and bicycle information — please visit the Rail Replacement Services page.
Information on the pick-up and set-down locations for replacement vehicles can be found by checking station signage or by searching for your station on the Find a Station page.
Additional Advice
Passengers should note that replacement vehicles may be busier than usual, and it is recommended to allow extra time for your journey.
Network Rail and train operators thank passengers for their understanding and patience while these important works are completed to maintain and improve the rail network in the region.
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