Greek political leaders will meet today to form a caretaker Government to take the country through to a June election - the second in just over a month.
President Karolos Papoulias was forced to call a new vote after failing to form a coalition Government and polls suggest that radical left party Syrzia - who have pledged not to follow the bailout terms - will win the re-run.
That prospect has shaken faith in Greece's ability to remain in the single currency and stay solvent, sending the euro and European shares lower.
Greece will hold new elections next month after party leaders failed to find an agreement on a coalition Government.
As well as traders preparing for the return of the Greek drachma some UK companies are considering a eurozone exit strategy.
A business leader said if there was a sudden deterioration in the eurozone it would be like an 'earthquake' for British firmS.