Engineering work is taking place in the early hours between Parson Street and Taunton, closing some lines early on Tuesday to Friday mornings.
The 06:12 Frome to London Paddington will start from Westbury at 06:22. An earlier train will depart at 06:07 from Frome to Westbury to connect with the train to London Paddington.
Check before you travel:
You can plan your journey using the National Rail Journey Planner.