Destructive winds and travel chaos will be likely, and some west coast areas can expect more vigorous winds.
The Met Office said gusts of 100mph were recorded at Great Dun Fell in Cumbria at 1am, while recordings of 90mph were made at Orlock Head in Northern Ireland on Tuesday evening.
"Gusts on Wednesday morning are expected to reach 45 to 50 miles per hour in places inland while along the coasts gusts as high as 65 miles per hour are likely".
Weather-watchers have been warned to brace for a -10C Arctic blast that could last a week. "There will again be some snow over the high ground in Scotland".
"But by Saturday the cold will have pushed all the way south with a cold and brisk day across the whole of the UK". Highest afternoon temperatures 6 to 10 degrees Celsius.
The wind dropped away as the morning progressed and the major incident, launched late on Tuesday, was stood down at about 4am on Wednesday.
"The reality is the severity of the storms that we're seeing this particular season is as a result of the polar air mass has gone significantly further south in the Atlantic", he said.
Others were injured by falling trees. Two people were airlifted to hospital in Christchurch, Hampshire, when a tree hit their vehicle. Parks were also closed because of worries over falling tree branches.
Overturned vehicles forced the closure of the A1M near Hatfield in Hertforshire, the M6 near Lancaster and the M5 near Worcester, where lorry spilled its road.
A pregnant woman who had gone into labour early was flown safely to hospital by helicopter as the storm passed across mid-Wales.
They said many coastal roads still had issues with standing water and advised motorists not to try to drive in flooded areas.
A yellow weather warning was issued, which will remain in place until 6pm tonight.
A spokesperson said: Storm Eleanor will ease but strong winds, large waves and a higher than average tide will continue.
Strong winds also caused problems at Charles de Gaulle airport in Paris, with slight delays stemming from precautions being taken to safely get travellers into aircraft.