Future engineering work

PAGE LAST UPDATED: 09/09/2022 12:38. Update now

See details of routes affected by planned engineering works, including when they take effect, maps of the affected area, alternative timetables, advice for alternative travel and real-time updates.

Buses replace trains between Swansea and Carmarthen on Sunday 6 November

Start date
End date
Route affected
Download map of route afected

Great Western Railway between London Paddington and Swansea / Carmarthen

Transport for Wales between Manchester Piccadilly / Newport / Cardiff Central / Swansea and Carmarthen / Fishguard Harbour / Pembroke Dock / Milford Haven / Shrewsbury

TOC(s) affected
Great Western RailwayTransport for Wales

Engineering work is taking place between Swansea and Carmarthen all day, closing some lines.

As a result the following amendments will apply:

Great Western Railway:

  • The 09:37, 11:43 and 13:43 London Paddington to Carmarthen services will terminate at Swansea.
  • The 10:27 Swansea to Carmarthen service will not run.
  • The 11:27, 14:17, 16:23 and 19:20 Carmarthen to London Paddington services will start from Swansea.


Rail replacement buses will run between:

  • Swansea and Carmarthen


Transport for Wales:

Services will be amended to split and run to / from Swansea and to / from Carmarthen with no service between.

A rail replacement bus service will be in operation between Swansea and Carmarthen.

A rail replacement bus service will be in operation between Swansea and Llandrindod.

Check before you travel:

These changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.

Replacement Bus Travel Advice:

For helpful advice if you need to travel on a rail replacement service, including accessibility and bicycle information, please use this page.

You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages.