FEARS that Greece will crash out of the euro triggered a global sell-off that left London’s leading shares index at its lowest close of 2012.

The FTSE 100 Index closed down 2% or 100.5 points at 5554.6 after the leader of Greece’s left-wing Syriza bloc said he will try to form a coalition based on tearing up the terms of the country’s bailout deal, which would likely cause chaos by seeing the country ejected from the eurozone.