There is major disruption to Cross Country services between Oxford and Didcot Parkway, Bridgwater and Taunton, and Taunton and Plymouth/Penzance.
First Great Western said it would only be able to run four trains an hour between Reading and London Paddington this morning because of flooding near Maidenhead. South West Trains, Southeastern and Southern are also operating heavily-curtailed services.
More top news
Student Charlie Mann was jailed for 16 months for the attack on his mother at their family home while high on Meow Meow.
Monday night's weather for the east of the region
Monday night's weather for the west of the region