Engineering work is taking place at Cardiff Central, resulting in the closure of some lines.
Most trains between Cardiff Central and Taunton will not operate between Cardiff Central and Bristol Temple Meads.
Some trains between Cardiff Central and Portsmouth Harbour will call additionally at Severn Tunnel Junction, with a few also calling additionally at Patchway.
Most trains will depart Cardiff Central and Newport a few minutes earlier than normal.
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.