Budget 2015: oil prices and Greece threaten British economy, says Osborne

Chancellor says stability would be greatly threatened if Athens exited eurozone and defends UK joining Asian Infrastructure Investment Bank

Greece's financial crisis and the recent plunge in oil prices pose real risks to Britain's economy, the chancellor warned in his budget speech, even as he unveiled better than expected growth forecasts for the UK.

The new Greek government is at loggerheads with much of the rest of the eurozone - especially Germany - after backing away from previously agreed austerity measures.