Commuters are being warned of travel disruption on Monday as a storm bringing severe gale-force winds starts moving across England and Wales.
Train companies have cancelled early-morning services, and flights into London have been reduced.
Gusts of up to 80mph (130km/h) are predicted as the weather hits the South West then moves north and eastwards and there are fears of flooding and damage.
The prime minister has chaired talks about plans to protect the public.
Meanwhile the search for a missing 14-year-old boy who was swept away by the sea in East Sussex has been stood down.
Robin Gisby, network operations managing director for Network Rail, said commuters should expect considerable disruption.
“This will impact up to Birmingham and up to Nottingham and the Midlands. If we get through this in the morning, restore the service during the afternoon and are able to start up a good service on Tuesday morning, in the circumstances I’ll be pretty pleased,” he said.
Travel warnings include:
South West Trains have advised people not to travel on Monday with most services not running until at least 08:00 GMT to allow Network Rail to check lines. A reduced timetable will be in operation, with some trains limited to speeds of 50mph
East Coast will operate a revised emergency timetable on Monday, with trains stopping at Peterborough until 10:00 GMT, and limited to speeds of 50mph afterwards
First Great Western and Virgin West Coast main line are also running an amended service until 10:00 GMT and 09:00 GMT respectively
First Capital Connect and C2C said services are unlikely to begin until 09:00 GMT. Greater Anglia, Southern and Gatwick Express have said services on Monday will not run until it is declared safe to do so
London Overground will not run a service on Monday before 09:00 GMT, while First Great Western has warned of extended travelling times and Southeastern said it is likely to start running services late
Airports including Heathrow and Gatwick are warning of possible disruption to flights, advising passengers to check with airlines
Airlines operating in and out of Heathrow have been instructed to reduce their schedules by between 5% and 20% between the hours of 06:00 GMT and 22:30 GMT, leading to about 60 flight cancellations. It is not yet clear how many of those will be short-haul or long-haul flights
EasyJet has warned passengers there could be disruption to flights on Monday. It said no trains would run to Gatwick, Southend, Stansted or Luton airports before 09:00 GMT
Eurostar said it will not be running trains on Monday until 07:00 GMT, with early services from London and Brussels subject to delays. It expects to run a full service after 07:00 GMT and passengers are advised to arrive at the scheduled time
Several ferry companies have also cancelled services, including some English Channel and Irish Sea crossings
Several bridges including the M48 Severn Crossing, the A249 Sheppey Crossing in Kent, and the Tamar Bridge which joins Cornwall and Devon are closed. There also are plans to shut the M4 Severn bridge and the Queen Elizabeth II bridge on the M25 on Monday morning, with traffic directed through the tunnel part of the crossing