The Chancellor George Osborne says he'll slash public spending and increase taxes in an emergency Budget to tackle a £30bn "black hole" if the UK votes to leave the European Union. That could include raising income and inheritance taxes and slashing the NHS budget. 57 rebel Tory MPs have threatened to block the measure which they've said would make the Chancellor's position "untenable". The Chancellor's warning comes as the latest polls suggest that public momentum is moving towards a vote to leave Europe. With both sides pulling out all the stops to change the minds of the vast pool of undecided voters, there is still everything to play for. Today we're going to hear the arguments For and Against Britain remaining in Europe. David Buik is a market commentator at Panmure Gordon and a supporter of the OUT Campaign. John Springford is a Senior fellow at the Centre for European Reform. He's also an Advisor to the House of Commons Treasury Committee for Economics of the Brexit inquiry.