Europe's big guns warn Greek voters that a no vote means euro exit

Germany, France and Italy joined the European commission in insisting that Sunday's poll is about continued eurozone membership

The eurozone's three biggest countries have raised the stakes in next Sunday's Greek referendum with an orchestrated warning to voters that a no vote would mean exit from the single currency and the return of the drachma.

As the Greek economy suffered on its first day of stringent capital controls, politicians from Germany, France and Italy joined the European commission in insisting that the poll was not about whether Athens could secure more favourable bailout terms but was about continued euro membership.

Related: Greece in chaos: will Syriza's last desperate gamble pay off?

Related: Greece fiercely divided as referendum campaign gets under way

Related: Alexis Tsipras must be stopped: the underlying message of Europe's leaders