Ministers have been urged by an influential committee to draw up a plan of action to help the country cope in the event of a eurozone collapse.
US Republican presidential candidate Mitt Romney is the front-runner to challenge Barack Obama for the Presidency after securing the swing state of Ohio on Tuesday night.
Lehman Brothers has emerged from bankruptcy and is now a liquidating company that will begin the process of paying back its creditors and investors before finally being wound up.
A "disorderly" default in Greece could cause more than €1trn (£833bn) damage to the eurozone, a confidential report has warned.
China has cut its annual economic growth target for the first time in eight years, lowering its forecast to below 8% for the first time since 2004.
Recent market uncertainty has seen extreme volatility in investment markets over the last few years.
Eurozone members have delayed the approval of more than half of the €130bn loan for Greece, raising fears the troubled economy will officially default.