British immigration minister James Brokenshire said on Sunday the country faces a major security concern from people who fought in Syria and have since returned to Britain.

The minister told the BBC that Britain's security services were "vigilant" about those traveling between Britain and Syria, adding the issue was a "big problem."

Britain's Foreign Secretary William Hague on Saturday blamed President Bashar Assad's regime for the breakdown in talks between Syria's warring sides, calling the situation a "serious setback" for peace.

"The failure to agree an agenda for future rounds of talks ... is a serious setback in the search for peace in Syria, and the responsibility for it lies squarely with the Assad regime," Hague said in a statement.

A British convicted criminal was jailed for three years on Monday for plotting to kill Prince Harry.

Ashraf Islam, 31, said he had a "moral right to judge" the royal because he fundamentally disagreed with the work of the British military, of which Prince Harry is a member.

Spanish police said Sunday they were on the hunt for five foreign fugitives who are thought to be hiding in Spain, including two British men and a Colombian woman wanted for murder.

Police asked the public to be on the lookout for Kevin Thomas Parle, 33, who is wanted in Britain for the murder of a young mother who was shot dead when three men burst into her home in the northwestern city Liverpool in 2005.

The leader of Britain's eurosceptic UK Independence Party Nigel Farage urged the government Sunday to redirect part of its foreign aid budget towards flood victims at home.

Speaking on a visit to the flood-hit county of Somerset, Farage complained that Britain gives aid to India despite the fact that New Delhi has its own space program.

Britain deployed Royal Marines on Thursday to help with devastating floods after what officials said was likely the worst spell of winter rainfall for 250 years.

Around 40 marines were helping reinforce flood defenses near Taunton in Somerset in southwest England, parts of which have been under water for a month.

Support for the "Yes" campaign backing an independent Scotland is growing sharply, eight months of a referendum on the issue, according to a poll published in the Scotland on Sunday newspaper.

Some 37 percent of those surveyed said they supported independence, with 44 percent opposed and 19 percent undecided. This is a five point gain for the "Yes" campaign since the last ICM survey was conducted last September.

British police said on Monday they had arrested a 21-year-old man returning from Istanbul to London's Stansted airport on suspicion of being involved in terrorism abroad.

It is the sixth anti-terrorism arrest in the past week involving travel to Turkey, which shares a border with Syria.

British counter-terror police arrested two men on Monday at London's Heathrow Airport on suspicion of terrorism offenses linked to Syria, police said.

The men, both aged 21 and from Birmingham, central England, were held after arriving back in Britain on a flight from Istanbul in Turkey, West Midlands Police said.

Iran could attend peace talks on Syria next week if it gives a "strong signal" that it will embrace a political transition to replace the current regime, British Foreign Secretary William Hague said Monday.

Hague said Iran was still providing support to Syrian President Bashar Assad's government, and that if it wanted to attend the talks in Switzerland it should instead agree to the principles set out at a first set of talks in Geneva in 2012, including a transitional government in Syria.