Heavy rainfall has flooded some lines between Swindon and Bristol Parkway.
The line from Swindon towards Bristol Parkway and South Wales is blocked. The line from Bristol Parkway towards Swindon and London Paddington is open but services may have to run at a reduced speed.
Trains may be delayed by up to 30 minutes, cancelled or diverted.
Disruption is expected until the end of the day.
Additional information:
Network Rail are onsite and regularly checking flood water levels.
Check before you travel:
You can check your journey using the National Rail Enquiries real-time Journey Planner.
âââââââCompensation:
You may be entitled to compensation if you experience a delay in completing your journey today. Please keep your train ticket and make a note of your journey, as both will be required to support any claim.