Foreign nationals could soon have to take a test on British history before they are granted a UK passport after David Cameron set out moves to toughen up requirements for citizenship.
The British prime minister appealed to the public to "shop" illegal immigrants and announced a drive against bogus marriages as he promised to "reclaim our borders".
In a major speech on immigration, he said the government would overhaul the structure of citizenship tests to give them a more traditional flavour.
"There's a whole chapter in the citizenship handbook on British history. But incredibly, there are no questions on British history in the test," he said."
Mr Cameron has set his government the target of reducing net migration to Britain from "hundreds of thousands" to "tens of thousands" by the next general election.