Last updated:Today at 21:13
Train companies affected:Grand Central, Hull Trains, LNER, Lumo
Train operators affected
Great Western Railway between London Paddington and Swansea
Engineering work is taking place between Patchway and Severn Tunnel Junction, closing various lines overnight from Wednesday evening until Friday morning.
As a result, the 22:49 London Paddington to Swansea service will run 5 minutes later than usual between Bristol Parkway and Newport.
You can plan your journey using the National Rail Enquiries Journey Planner