The hurricane-force winds that swept Britain claimed two lives, with another man feared dead after being swept out to sea, it emerged last tonight.
As electricity companies struggled to reconnect thousands of homes left without power, forecasters warned that further gales were likely to hit western Britain tonight.
Roads were closed, trees uprooted and rail services badly affected by winds of up to 110 m.p.h., according to police.
Mark Huxley (5) was the youngest victim when his mother's car hit branches brought down by the wind. The car was then in collision with another in north Wales.
Mrs Gillian Huxley, of Whitchurch, Shropshire, was injured and taken to hospital.
A search was called off yesterday for a 28-year-old man dragged out to sea by a 30ft wave near the Palace Pier in Brighton.
The man, from Tonbridge, Kent, was enjoying a Boxing Day walk on the beach with his 41year-old girlfriend and her 21year-old son when he stripped off for a swim, a Sussex police spokesman said.
He was dragged out to sea by stormy waters, and his companion's attempt to rescue him failed as the waves forced him back, the spokesman added.
Solent Coastguard said it was unlikely the man would survive in the cold water, but it could be a few weeks before his body was recovered.
He was spotted briefly on Saturday by coastguards using an infrared camera on a helicopter, but it was too dangerous to winch him to safety.
A police spotter helicopter resumed at first light today but the search was called off before lunchtime.
Search teams yesterday found the body of a 44-year-old man after he was swept away while watching flood waters at his Devon village home of Ashburton.
Mr Paul Witt was last seen standing close to a broken fence at the bottom of his garden and is thought to have accidentally stumbled into the Ashton river. He was found a half-mile away.
A 16-year-old girl was airlifted to the Scottish mainland with serious head injuries after being struck by a chimney stack blown off a roof in Rothesay on the Isle of Bute. Her condition last night was "serious".
Ms Louise Bennett, of Rothesay, was taken first to the Victoria Infirmary, Rothesay, and has since been transferred by Royal Navy Sea King helicopter to Inverclyde Royal Infirmary, Greenock. Her condition was "serious".
More than 10,000 homes were expected to be without electricity in Scotland last night, according to Scottish Power.
A Scottish Power spokesman said: "We're using helicopters to get engineers out to the affected areas because access is a problem with so many roads blocked by fallen trees, but we're aiming to get most people back on supply today."
Many roads throughout Scotland remained closed owing to flooding, snow or fallen trees, and AA Roadwatch urged drivers to travel only if their journey was absolutely vital. ScotRail said train services were seriously hampered by gusts of up to 100 m.p.h.
PA WeatherCentre said the winds were likely to get a renewed battering tonight continuing until Wednesday.