Fast trains between Didcot and Oxford, and Paddington and Oxford are cancelled. Stopping services are running every 30 minutes.
Flooding between Swindon0Bristol Parkway is causing delays of up to 15 minutes between London Paddington and Cardiff Central. Updates soon.
More top news
Frustrated commuters took to Twitter to brand Stratford station the "7th circle of Hell" as football fans caused rush hour congestion.
People have been protesting outside the French Embassy today over burkinis being banned on some beaches in France.
Police have released CCTV footage to try to track down a gang who robbed two teenagers of their bikes and mobile phones.