Prime Minister David Cameron has spoken by phone with German Chancellor Angela Merkel as she prepares to go into crunch talks with other eurozone leaders about the crisis in Greece.
Greece's future membership of the single currency has been thrown into doubt by voters' emphatic rejection in Sunday's referendum of an austerity package demanded by the country's creditors in return for further bailouts. The 61%-39% No vote has plunged the European Union into what is widely seen as the deepest crisis in its history.
Mr Cameron today met Bank of England Governor Mark Carney and ministers including Chancellor George Osborne to discuss the possible impact on the UK. Mr Osborne was due to update MPs in a statement to the House of Commons on the contingency plans the Government has put in place to protect UK businesses, banks, holidaymakers and the 40,000 expats living in Greece.
Following his conversation with Mrs Merkel, Mr Cameron vowed: "We will do whatever is necessary to protect the UK's economic security."