Britain is already assessing the damage caused by recent severe weather
People are being warned to brace themselves for floods on England's coasts and rivers.
The Environment Agency said the risk of coastal flooding could last throughout the weekend and into next week.
There are currently almost 100 flood warnings - indicating flooding is expected - in England and Wales, with about 20 in Scotland.
Meanwhile an 18-year-old that left home to take photographs of stormy seas in Devon on Thursday remains missing.
'Saturated ground'
The Environment Agency said parts of England's north-east coast could see flooding later while the south coast - including Portsmouth and Newhaven - is being warned to expect coastal floods over the next two days.
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"The risk of flooding to the coast will continue over the next few days, especially on the south and west coast and along the Severn estuary," Jonathan Day from the agency said.
"In addition, wet conditions have left the ground saturated in many areas, increasing the risk of river and surface water flooding."
The swollen River Severn could be seen from the flood defences in Minsterworth, near Gloucester
Flood water from the river reached the town of Upton-upon-Severn on Saturday
On Friday a storm caused major disruption in Aberystwyth
The Thames Barrier was closed for the fifth consecutive day on Saturday
James Allbut took this photograph of a van after it had been tossed around by waves in La Rocque, Jersey
There are no severe flood warnings - indicating danger to life - in place across the UK. But there are more than 250 flood alerts - meaning flooding is possible, be prepared - in place, in addition to the 100 or so flood warnings.
There is an increased risk of flooding risk to Weybridge and Guildford on Sunday and into Monday and people living along the non-tidal Thames, including Oxford and Osney, could be at risk from Sunday.
There are also a number of flood warnings in place in Scotland, but no severe flood warnings.
Frozen roads
The Met Office is predicting heavy rain and ice.
BBC weather forecaster Laura Gilchrist said the weather was not out of the ordinary for the time of year, but warned it could cause disruption in areas still reeling from recent storms.
The temperature would be colder than it had been of late, she added.
Meanwhile, severe ice warnings have been issued for north Wales, Scotland and north-west England.
The Met Office said people should prepare for travel disruption as stretches of road freeze overnight.
And forecasters also warned of heavy rain in southern England, south-east Wales, Northern Ireland and parts of Scotland.
The Thames Barrier was closed earlier because of "ongoing high flow/high tide conditions", according to the Environment Agency, but was due to reopen at 17:00 GMT.
David Cameron praised the agencies involved in dealing with the storm threat.
The prime minister tweeted: "Great work by emergency services & @EnvAgency helping people flooded. 200000 properties have been protected by flood defences in last 36hrs."
In other developments on Saturday:
- A man was rescued by police in Newquay after going into the sea in the early hours of Saturday morning
- The Met Office issued a yellow warning of snow for Scotland and parts of northern England on Saturday afternoon
- On Sunday, more wet and windy weather is predicted for the western side of the British Isles, gradually sweeping its way north and eastwards
- The Environment Agency issued about 100 flood warnings across England and Wales
- Part of a cliff has collapsed into the sea on the East Sussex coast after being undermined by rough seas
- In Scotland, Falkirk Council warned of possible localised flooding in Grangemouth at high tide at around 17:15 GMT.
Hundreds of homes were flooded on Friday as storms battered the UK's coastline.
Residents in Chiswell and Portland in Dorset were evacuated ahead of high tide on Friday night while around 100 people in Aberystwyth, Dyfed, were advised to move to higher ground.
Around 90 properties are estimated to have flooded since Friday, bringing the total to around 220.
Have you been affected by the floods? Please get in touch using the form below. When sending us pictures at no time should you endanger yourself or others.
Send your pictures and videos to yourpics@bbc.co.uk or text them to61124 (UK) or +44 7624 800 100 (International). If you have a large file you can upload here.
