Hundreds of thousands of people remain without power and travel services continue to be disrupted on Saturday in the wake of Storm Eunice.
At least four people died after record-breaking gusts hit the UK on Friday causing widespread disruption.
A clean-up is set to begin after the storm brought record-breaking gusts of wind to the UK and Ireland.
National Rail said “routes across most of Great Britain” remain affected on Saturday morning, with disruption set to continue throughout the day.
South Western Railway expects significant disruption across their network in the morning, while Great Western Railway and Greater Anglia services are suspended until approximately 10am.
Even though the first of the Met Office’s two ultra rare “red” weather warnings expired at midday affecting the south west of England and south Wales, a second remains in place until 3pm across the East of England and London due to the combination of high tides, strong winds and storm surge.
But attention is already turning to the impact beyond Friday afternoon, with further disruption to travel and more weather warnings issued for Saturday.
Prime Minister Boris Johnson wrote on Twitter: “We should all follow the advice and take precautions to keep safe.”
Amid the chaos – with swirling gusts felling trees, tossing debris in the air, and damaging homes and buildings, including London’s O2 Arena – emergency services were forced to issue warnings for people to stay away from the worst-affected areas.
Roy Stokes, from the Environment Agency, said it was “probably the most stupid thing you can do” to travel to the most exposed places, amid reports of people climbing on to seawalls and swimming in the sea.
Across the UK, but particularly in the worst-affected areas, people were asked to stay at home.
Western Power Distribution said that, as of 1pm, more than 140,000 homes were without power, the vast majority of which were in the south west of England.
On the transport network, several routes were closed.
Wind speeds forced both the M4 Prince of Wales Bridge and M48 Severn Bridge into Wales to close to traffic for what is believed to be the first time in history, while the Humber Bridge linking Yorkshire and Lincolnshire closed from 1.30pm.
Train operators across Britain urged passengers to avoid travelling on Friday as emergency 50mph speed limits are in place in many areas, with no trains operating in Wales for the entire day.
P&O Ferries suspended all sailings between Dover and Calais, while dozens of flights were cancelled and hundreds delayed across UK airports.
Elsewhere, Royal Mail said it “had no choice” but to suspend deliveries and close delivery offices in parts of the country due to safety concerns.
The Environment Agency has now downgraded 10 severe flood warnings – eight along the Severn and two along the Wye – meaning there was a danger to life, as well as dozens of flood warnings and more than 100 flood alerts.
It said Eunice had “not resulted in the significant impact initially forecast”.
A separate amber weather warning is also in place for gusts across England until 9pm, as well as yellow warnings for snow in Scotland and Northern Ireland.
The Met Office has issued a less-severe yellow wind warning for much of the south coast of England and South Wales on Saturday, which it said “could hamper recovery efforts from Storm Eunice”.
Several red warnings were issued in late February and early March 2018 during the so-called Beast from the East, the storm that brought widespread heavy snow and freezing temperatures to many parts of the UK.