Engineering work is taking place between London Paddington and Slough, closing some lines.
As a result, the 08:36 London Paddington to Didcot Parkway service will depart later than usual at 08:42.
After this service, trains between London Paddington and Didcot Parkway will run between Reading and Didcot Parkway only.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner