Engineering work is taking place between Southall and Hayes and Harlington closing 2 out of 4 lines.
Trains from London Paddington will depart up to 8 minutes earlier than normal retuning back to normal time after Hayes & Harlington.
Some trains towards London Paddington will have journey times slightly extended after Hayes & Harlington.
Local trains between London Paddington and Didcot Parkway will run between Slough and Didcot Parkway.
Check before you travel:
These changes are not currently shown in the National Rail Enquiries Journey Planner, please check back nearer to the time of travel.