David Cameron pledge to ban tax rises until 2020

Prime Minister David Cameron is to pledge no increases in income tax, VAT or national insurance before May 2020 under a Conservative government.

Mr Cameron will make the commitment in a speech in the West Midlands.

He will highlight manifesto policies of raising the personal allowance to £12,500 over the next parliament, lifting the 40p tax threshold to £50,000, ensuring no-one working 30 hours on the minimum wage pays income tax, and taking estates worth up to £1 million out of inheritance tax.

And he will insist personal taxation is one of the biggest areas of difference between the parties.

Mr Cameron will say: "We know it's your money, not Government money. You've worked for it, you've earned it, you should be able to keep it.

"It's a fundamental difference of approach between the Conservatives and Labour; me and Ed Miliband.

"It is, in fact, the first law of politics: it's Labour who put up your taxes, and the Conservatives who cut them."