Prime Minister David Cameron has said he is "very sorry" for the suffering caused by the extreme weather afflicting large swathes of the country, as he promised to do "whatever it takes" to help those affected.
Mr Cameron was speaking as communities across Britain braced themselves for a battering by heavy wind, rain, and even snow as Valentine's Day storms wreak havoc.
Forecasters warned that the appalling conditions which have ravaged communities show no signs of abating, with heavy rain expected today and tomorrow.
The Met Office has warned wind, rain and snow is expected to strike in a "multi-pronged attack" with up to 40mm (1.6 ins) of rain set to fall in just six hours while gusts of up to 80mph blast through parts of the country.
The Environment Agency (EA) has 17 severe flood warnings - which mean a risk to life - in place in the Thames Valley, Somerset and Gloucestershire, as well as 131 flood warnings across England and Wales and 246 flood alerts.
As well as surface water problems, the rain could also impact on already full-to-bursting rivers while some coastal areas could be at risk as blustery conditions could bring large waves.
Visiting Blackpool in Lancashire to view relief efforts, Mr Cameron told ITV1's Daybreak: "People need to be reassured that we will do whatever it takes to help people during this very difficult time."
Asked whether he would repeat Communities Secretary Eric Pickles' apology for the Government's early response to the crisis, Mr Cameron said: "Of course I am very sorry for any way that people have suffered.
"What we have tried to do is stand up the emergency response arrangements as quickly as we could."
Mr Cameron said that the Government's Cobra emergency committee had met before Christmas to deal with the impact of the tidal surge on the east coast and soon after Christmas as the Somerset Levels were flooded.
"Obviously, we are facing a very difficult time because we have got the wettest start to the year for 250 years and these are extraordinary weather events, but we are fighting on every front to help people," he said.
"We have deployed the military, we have got thousands of sandbags being put around people's houses, over 300,000 people had their electricity reconnected last night. If you look at the state of our flood defences, over 1.3 million homes have been protected by the flood defences that are in place.
"We are making sure that today, before the next rise in the level of the Thames over the weekend, we do everything we can to protect more homes and protect more communities."
Mr Cameron acknowledged that the extreme weather will have an impact on the UK's economy as it recovers from the downturn.
Asked if the floods could push Britain back into recession, the Prime Minister told Daybreak: "Obviously, the weather will have an effect on what is happening in our economy.
"But I want businesses to know that the Government is standing behind them. That's why we have said that flood-affected businesses will get a three-month rate rebate on their business rates and we have said that businesses can pay taxes later - a delay in their tax payments."
Mr Cameron repeated his pledge that "money is no object" in the relief effort.
"I don't want people who have water lapping at their homes worrying about the cost of sandbags or whether there will be enough emergency services or whether the army will be there.
"All these things will be done. We will reimburse 100% of the spending (councils) have to take to protect people.
"I think it is very important that this message gets out: In this relief effort, we will spend what is necessary."
The Environment Agency said yesterday that it expects hundreds more properties to be threatened by flooding.
Around 56,000 households remain without power after gusts of up to 108mph battered parts of the country in the "Wild Wednesday" storms, which left one man dead and hundreds stranded as transport networks were hit.
In the highlands of Wales, northern England, Northern Ireland and Scotland, the rain could turn to snow, with 5cm to 10cm (2-4 ins) falling above 300 metres and perhaps as much as 20cm (8ins) above 400 metres.
Windsor, Maidenhead and communities along the Thames in Surrey remain at high risk of flooding from the River Thames, with significant flooding of homes and businesses expected.
Flooding continues on the Somerset Levels and Moors, and there is still a high risk of coastal floods in Dorset.
EA chief executive Paul Leinster said: "We ask people to remain vigilant and take action where necessary. We expect to see river levels rising again with more rain forecast for Friday and Saturday."
Since early December, 5,800 properties have been flooded across the country, with high winds causing further problems yesterday.
The Prime Minister said there was a "fight on every front" against the floods, including the country's biggest ever pumping operation to remove water from the Somerset Levels.
"We are in the middle of very difficult times," he told the BBC.
"It's been the wettest start to a year for 250 years, we have got the biggest pumping operation we have had in our country's history on the Somerset Levels, we've got more flood defences in action than at any time before and we've got a large deployment of the military out there helping the very hard-working emergency services, local government workers and Environment Agency workers.
"It's a massive national effort. We have got to fight on every front, we have got to do everything we can in the next 24 hours to protect homes before the river levels rise again.
"A huge national effort is under way but we must keep at it."
Defending the resources being put into the effort he said: "The reason I said money is no object in this relief operation is because I want local councils and local people to know that the rumours you hear that you might be charged for sandbags, that's not true; the rumour you hear that councils might have to pay for the military and they won't get that money back, that's not true.
"I want people to know that the Government absolutely stands behind this relief effort and money isn't an object in this relief effort. Whatever is required with emergency services, Environment Agency workers, sandbags, military effort - all those things will be done in this vital period. "I think it's very important people understand that."
But he added: "There are always lessons to be learned and I'll be very keen to learn them."