Engineering work is taking place between Langley and Twyford, closing some lines.
The 06:38 London Paddington to Reading service will start from Slough. A replacement bus service will run between London Paddington and Slough, starting earlier than usual at 05:55.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
Replacement Bus Travel Advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility information, please use our travel information pages.
You can find the location of your replacement bus by checking station signs or by searching for your station on our station information pages.
Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.