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Buses replace late night / early morning service between Severn Tunnel Junction and Gloucester / Cheltenham Spa from Monday 21 to Thursday 24 December 

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Engineering work details

Starts Monday 21 December 2026 to Thursday 24 December 2026

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Train operators affected

  • Transport for Wales

Route(s) affected

Between Cardiff Central and Gloucester / Cheltenham Spa

Description

Engineering work is taking place between Severn Tunnel Junction and Caldicot, closing some lines overnight.

From Monday to Wednesday evenings, the 23:34 Cardiff Central to Gloucester will terminate at Severn Tunnel Junction. A rail replacement bus will run from Severn Tunnel Junction to Gloucester, departing at 00:21.

From Tuesday to Thursday mornings, the 05:38 Cheltenham Spa to Cardiff Central service will start from Severn Tunnel Junction at 06:28. A rail replacement bus will run from Cheltenham Spa to Severn Tunnel Junction, departing earlier at 04:33.

Check before you travel:

You can plan your journey using the National Rail 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 drop-off 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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