Far left parties against the country’s bailout agreement received strong support from the electorate disheartened by harsh austerity measures in a country now in its fifth year of recession. However, polls at the weekend showed support for the pro euro bailout parties increasing enough to form a coalition.

Dewhirst said that there had been a significant amount of "scaremongering" from the euro elite about the ramifications of a "Grexit" but that it would be feasible and even orderly.

“It’s a bit like Y2K, [also known as the Millennium bug, the much- hyped problems that would affect computers globally as the year changed to 2000] there would be a lot less to it then everyone thinks.

"The Greek banking system would close for a week and there’ll be a new currency. Not the drachma but ideally it would be two Geuros (the name given to a possible Greek parallel currency) to one euro so they devalue and fix to the euro,” Dewhirst said.

He added that this would transform Greece and the rest of the euro zone for the better.

“Greeks would no longer be able to afford German cars and Germans would be able to buy Greek villas and the young unemployed in Greece would have jobs as tourism booms. The best thing would be that they [Greeks] could blame the foreigners,” Dewhirst said.

He said suggestions of a bank run and contagion have been overplayed by some quarters.

“Yes, the banks would run dry but it can be done, there is a lot more money electronically than there is cash. In Argentina they closed everyone’s bank account and then they were reopened using Pesos. The club would rally round the rest so the weaker members - Spain, Italy, Ireland and Portugal -would receive a massive support mechanism. The Germans would provide support to the rest of the euro but not to the Greeks,” he said.

Kit Juckes, global head of foreign exchange at Societe Generale, told CNBC’s “Worldwide Exchange” that the best outcome was “the status quo.” “A Greek economy in depression, austerity that guarantees they’ll stay in depression and living on life support from the rest of Europe is the best,” he said.