Germany warns 'no going back' if Britain curbs EU immigration - report

German Chancellor Angela Merkel has warned Britain's David Cameron that putting limits on immigration from other European Union nations would be a "point of no return" that could sharply increase the risk of Britain leaving the EU, a magazine said.

The weekly Der Spiegel, citing unnamed sources in Merkel's office and the German foreign ministry, reported on Sunday that Merkel was becoming worried for the first time that a British exit from the EU - dubbed "Brexit" - was a real possibility. 

Under growing pressure from the anti-EU UK Independence Party (UKIP) ahead of a May 2015 national election, Cameron's Conservatives have said they would try to cap immigration from the rest of the EU if re-elected.

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