A weather warning is in force, with very strong winds of up to 90 mph expected across Scotland. It's a wet night for most of the UK and temperatures could drop to below freezing in the north of the country.
A man was rushed to hospital with head and chest injuries after a large tree was brought down on top of a car by the strong winds.
The falling tree smashed the windscreen and left the front seat passenger, a 19-year-old man, with facial wounds, according to West Midlands Ambulance Service.
The driver of the car was also taken to the same hospital as a precaution.
He was anaesthetised at the scene and taken to hospital. Another passenger, a man in his 50s, and the male driver suffered minor injuries in the accident which happened at about 6pm on the A45, between Stretton-on-Dunsmore and Rugby, in Warwickshire.
Electricity North West said that 3,500 properties in Cumbria and Lancashire were without power due to strong winds and debris bringing lines down.
We are trying to restore power to those homes as quick as we can but where lines have been brought down it will realistically take until tomorrow to get there."
Nearly 900 homes were also left without power in the Neath Valley, south Wales, after a high-voltage electrical cable was blown down at around 6pm.
Western Power said it was working to restore power, while police warned members of the public to stay away from the the source of the problem in Cefn Yr Allt area of Aberdulais.
In Northern Ireland 7,000 electricity customers lost power as strong winds wreaked havoc with the supply network. Engineers managed to get 5,000 back on the grid, but by 10pm were still working to restore supply to the remaining 2,000.
Northern Ireland Electricity said it had responded to around 200 incidents of damage to the network in northern and eastern areas of the region.
Damage included trees coming down across powerlines and broken electricity poles.
Julia Carson, NIE communications manager, said some customers could be without power throughout the night as it was too dangerous to carry out certain repairs while storms raged.
The Environment Agency has 26 flood warnings in place in England and Wales, with flooding expected and immediate action required.
Warnings were concentrated across the South West, Wales and the North West.
There were also 114 flood alerts, with flooding possible and the public told to "be prepared" throughout the rest of the country. Police closed the A595 at Moota in Cumbria after the roof was blown off a hotel, with motorists asked to avoid the area.
A roof blew off another property in Seaton and disruption due to trees blocking roads was reported in Whitehaven and Hackthorpe. There were also delays for train passengers across parts of the South West.
South West Trains reported problems due to trees on the track near Sherborne in Dorset and on a train between Exeter and Axeminster in Devon.
In Sheffield, a Championship football match had to be abandoned this evening when heavy rain left the pitch unplayable.
Sheffield Wednesday's home match against Wigan, at Hillsborough Stadium, was called off early in the second half after large puddles appeared on the playing surface.
Crawley Town and Bristol Rovers players had to leave the pitch as the match was abandoned due to bad weather during the FA Cup Second round replay match at Broadfield Stadium in Crawley.
Ireland has been battered by 90mph winds today leaving one woman dead, several others injured and thousands of homes without power.
A woman died after a tree fell onto her car near Mullingar, County Westmeath, and another person was injured when part of a railway station roof blew onto her car in Cork.
Met Eireann, the Irish Meteorological Service, has issued its highest severe weather warning for the west and northwest of the country.