National Rail warns of journey disruption in Wales over Christmas

The work will run continuously from 23:30 Wednesday 24 December - 04:00 Wednesday 31 December, requiring the closure of some tracks through Cardiff Central station

The work will run continuously from 23:30 Wednesday 24 December - 04:00 Wednesday 31 December, requiring the closure of some tracks through Cardiff Central station
Author: George SymondsPublished 29th Nov 2025

Network Rail says they'll be carrying out 'vital upgrades west of Cardiff Central station between 24-31 December to keep the railway safe and reliable for passengers'.

This work includes upgrades to the track - the rails, sleepers, switches and crossings, and points - which help to guide trains from one line to another.

To carry out these improvements, National Rail says their teams will be using handheld and mechanical tools, along with task lighting to ensure they can work overnight.

The work will run continuously from 23:30 Wednesday 24 December - 04:00 Wednesday 31 December, requiring the closure of some tracks through Cardiff Central station

Some services may have timetable changes and this might also affect journeys elsewhere on the wider rail network.

Passengers are being advised to check the latest travel information before setting off at nationalrail.co.uk.

Planned work dates:

Wednesday 24 December - Wednesday 31 December: Continuous work from 7:00pm (24 Dec) to 6:00am (31 Dec)

Saturday 3 January - Sunday 4 January: 11:30pm – 9:00am

Great Western Railway services affected

Saturday and Sunday: Trains between London Paddington and Cardiff Central / Swansea / Carmarthen will run up to 2 minutes earlier or later than usual.

Trains will be diverted between Cardiff Central and Bridgend via Ninian Park (not stopping at Ninian Park), adding a few minutes to journey times.

Calling times between Cardiff Central and Swansea / Carmarthen will be slightly earlier or later than normal.

Transport for Wales update services affected:

Maesteg services will shuttle between Bridgend and Maesteg.

All services to / from west of Cardiff Central will call at all stations where possible, divert via Ninian Park (non-stop) and run through Cardiff platform 4. Trains using the Ninian Park diversion will be retimed by a few minutes.

Passengers are being asked to check before travelling between Cardiff, Hereford & Shrewsbury, and between Bridgend, Swansea & Carmarthen because the trains may be timetabled to operate at different times than previously advertised.

Most services previously running between Ebbw Vale Town and Maesteg will now operate between Ebbw Vale Town and Newport only.

A significantly reduced service will run between Ebbw Vale Town and Cardiff Central, journeys may require a change at Newport:

Network Rail says they carry out much of its major engineering work over the festive period, when fewer passengers are travelling, and fewer train services are running.

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