Engineering work is taking place between Langley and Slough, closing some lines.
The 20:52 London Paddington to Oxford will depart earlier than usual at 20:50.
The 21:30 and 22:30 London Paddington to Bristol Temple Meads will depart earlier than usual at 21:58 and 22:58 respectively. They will operate in slightly revised timings throughout.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner