Engineering work is taking place between Didcot Parkway and Chippenham, closing lines overnight from Monday evening until Friday morning.
The 23:30 London Paddington to Cardiff Central service will be diverted between Reading and Bath Spa, and will not call at Didcot Parkway, Swindon or Chippenham.
A replacement bus will run from Didcot Parkway to Swindon, connecting at Swindon with a replacement bus from Reading to Chippenham. A third replacement bus will run from Swindon to Chippenham, Bath Spa and Bristol Temple Meads.
Additionally, the 23:20 London Paddington to Oxford service will be amended to additionally call at Didcot Parkway for customers of the 23:30 travelling to Didcot Parkway.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
You can find the location of your bus replacement by checking station signs or by searching for your station on our station information pages
Replacement Bus Travel Advice:
Bicycles are not allowed on rail replacement bus services at any time, unless fully folded. More travel advice for your replacement bus journey is available by selecting the Train Operating Company you are travelling with here.