With many people expected to travel to share Christmas with family and friends, National Rail Enquires said that very strong winds and heavy rain are forecast throughout England, Wales and Scotland on Monday December 23.
"This may mean that some trains are delayed or cancelled, and some train operators may run an amended timetable," it said in a statement
The train operation companies that could be hit include:
Arriva Trains Wales; c2c; Chiltern Railways; CrossCountry; East Coast; East Midlands Trains; First Capital Connect; First Great Western; First Hull Trains; First TransPennine Express; Gatwick Express; Grand Central; Greater Anglia; Heathrow Connect; Heathrow Express; Island Line; London Midland;
London Overground; Merseyrail; Northern Rail; ScotRail; South West Trains; Southeastern; Southern; Stansted Express; Virgin Trains.
For the latest update check the National Rail service alteration page.
David Cameron concedes that more flood prevention work needs to be done in areas like Yalding, where he was confronted by a local.
Within the next few hours, severe gales will hit northern England, Isle of Man and Wales. The rain will exacerbate the flood risk in places.
Three aircraft attempt to land at Birmingham Airport in today's tricky weather conditions.