The Government needs to rethink its national security strategy to address "gaps", a parliamentary committee has said.
The Joint Committee on the National Security Strategy said the current strategy, drawn up in 2010, had in some areas been made "less relevant by events".
One area criticised by the group of MPs and peers was the lack of a "joined-up" response to the flooding that hit the UK last winter.
The Environment Agency (EA) says it has repaired 350 flood defences and protected 100,000 homes in the process, after winter floods battered the south of England.
Repairs have been completed in Weymouth, where sea defences were washed away by stormy seas during January and February.
The EA has also repaired defences at Greatham Creek in Teesside, where flood waters ripped a 50m breach in the sea defence embankment.
Beaches along the Lincolnshire coast have also had their dune systems repaired to restore protection to over 20,000 properties.
The restored defences would supply "peace of mind" but the job was far from finished, the EA said.
Dr Paul Leinster, chief executive of the EA, said: "There is still much more to do, and thanks to the completed inspections we now have a full picture of the condition of all the flood risk management assets across the country."
The Christmas Eve chaos at Gatwick Airport should be "a wake-up call for airports across the UK" in tackling disruption, a report by MPs has said.
More than 11,000 travellers were affected by delays and cancellations on December 24 after flooding caused a power failure at the West Sussex airport.
In a report today, the House of Commons Transport Committee said that passengers had told of poor and often inconsistent provision of information about what was happening, lack of clarity about who was in charge, a lack of basic facilities and confusion about what expenses could be reimbursed.
The committee's report said: "The problems at Gatwick at Christmas Eve should be a wake-up call for airports across the UK to get on top of operational resilience issues.
"Disruption of whatever nature should be met with well-drilled plans, familiar to airport operators, airlines, and other contractors, which put passenger interests first."
Rail users hailed the reopening of the track at Dawlish in Devon as "absolutely fantastic" ahead of the Easter holidaysRead the full story ›
David Cameron has met workers who helped to reopen the Dawlish railway line after it was damaged following the February storms.
The Prime Minister tweeted:
David Cameron has hailed the rebuilding of the rail line at Dawlish in Devon as "absolutely vital" to the local economy.
The Prime Minister praised what he called an "engineering triumph" and promised that money would be made available for further transport schemes in the south-west.
Network Rail has released a time-lapse video of the repair work done to re-open the Dawlish railway line.
The line was badly damaged and left unusable following the storms in February.
David Cameron is meeting workers who helped to re-open the railway line in Dawlish, Devon, which was destroyed by storms in February.
The south-west was left cut off to trains following the damage caused by bad weather.
Lots of praise for workers - slightly unnervingly being called the 'orange army' http://t.co/TJeSWC5qZ6
Workers dredging a river in the Somerset Levels have turned up eight cars over the last week, all within 100 metres of each other.
Environment Agency staff working to help relieve flooding in the area noticed the cars, which could be up to 20 years old, in the drainage channel of the River Parrett.
It is so far unknown how the cars may have ended up on the riverbed, but officials stressed they would not have contributed to recent high water levels.
The broken rail line at Dawlish has reopened this morning after being closed for two months.
The first passenger train passed through Dawlish Station just before 6am, travelling from Exeter to Paignton.
The tracks were badly damaged by the storms back in February.