The Environment Agency is warning of the risk of coastal flooding caused by strong winds and large waves in the wake of the storm
Four people have died after a storm battered southern Britain, leading to 600,000 homes losing power, rail and flight cancellations.
A teenager in Kent and a man in Watford were killed by falling trees.
A man and a woman died in west London after a falling tree caused a suspected gas explosion and house collapse.
Network Rail said the damage to railway lines had been "worse than expected", with more than 100 trees on the lines, but some train services had resumed.
The strongest gust of 99mph (159km/h) was recorded on the Isle of Wight.
Bethany Freeman was staying in a building
adjacent to her family home
BBC forecasters say the storm has now ended in the UK - leaving a "broadly windy day".
Bethany Freeman, 17, suffered fatal injuries when the tree came down where she was sleeping in Edenbridge, at about 07:20 GMT.
Ch Supt Steve Corbishly from Kent Police said: "She was in a static home adjoining the house she lives in with her family. Tragically, she did die at the scene. It's not being treated as suspicious but we're working with Fire and Rescue to determine the exact cause."
A man in his 50s was pronounced dead at the scene after a tree crushed a red Peugeot 307 at Lower High Street in Watford, Hertfordshire, at 6:50 GMT.
Mark Joseph, who was passing by before the emergency services arrived, said: "We tried to assist, trying to get the tree off, but it was impossible... The poor chap didn't stand a chance."
Jeremy Cooke reports: "The storm was brief but
powerful and intense... with tragic consequences"
The Environment Agency had dozens of flood warnings in place - in areas of south-west England, East Anglia and the Midlands where flooding was expected, but the number is now down to four. There are also more than 100 flood alerts, where flooding is possible, across England and Wales.
It says there is an increased risk of flooding from rivers following the heavy rainfall, and large waves and strong winds may continue to cause some minor coastal flooding along the south coast.
The Energy Networks Association, which represents power companies across the UK, confirmed 200,500 homes were still without power.
A spokesman said 407,000 households which lost power earlier had been reconnected, but more had been cut off as the storm moved north and eastwards.
Network Rail said several hundred staff have been working to monitor conditions and react to any damage.
Three houses collapsed and two others were damaged in a suspected gas explosion in west London
The 17-year-old girl suffered fatal injuries when the tree crushed the caravan
Passengers wait on concourse at King's Cross station after train services were cancelled
Workers have cleared the track at Alton in Hampshire, as this picture tweeted by South West Trains shows
Hundreds of trees fell across the country
Robin Gisby, Network Rail's managing director of network operations, said: "While conditions were as forecast during the early part of the morning, the damage caused by the storm has been more severe than expected as it has tracked eastwards to the north of London and across to East Anglia."
Anthony Smith, chief executive of rail customer watchdog Passenger Focus, said it was "too early to tell if the industry made the right call when cancelling so many services, but the fact that major incidents have been avoided is good news".
Prime Minister David Cameron said the deaths caused by the storm were "hugely regrettable".
Asked whether train companies had over-reacted, he said: "These are difficult things to handle because you don't know for certain just how strong the storm will be."
In other developments:
The driver and a passenger were hurt when this bus blew over in Suffolk
A crane collapsed on the roof of the Cabinet Office in central London
The weather has damaged construction work on the hangar at Bournemouth airport
Other travel warnings include:
The Met Office said a gust of 99mph (159km/h) was recorded at Needles Old Battery, Isle of Wight, at 05:00 GMT.
BBC weather forecasters said in more populous areas including Lyneham, near Swindon; Yeovilton in Somerset and Hurn, near Bournemouth, speeds of 74-75mph (119-121km/h) had been recorded.
It has released figures showing the strongest winds and heaviest rainfall during the storm - with Otterbourne in Hampshire receiving 50mm of rain.
Wind speeds of 115 mph were recorded during the so-called Great Storm of October 1987.