The Conservatives have surged ahead in a new election poll that puts the party on 39%, six points ahead of Labour on 33%.

The ICM poll, published by The Guardian, has the Liberal Democrats unchanged on 8%, UKIP down two points on 7% and the Greens up three points on 7%.

The Conservatives were up 3% in the poll and Labour down 2%.

It is the best result for the Conservatives in an ICM poll since March 2012, before the so-called "omnishambles" budget.

Another poll by Populus, published earlier on Monday, showed the Conservatives and Labour neck-and-neck.

Martin Boon, of ICM Unlimited, said: "There is inevitably random variation between different polls, which generally falls within a 'margin of error' of plus or minus three points.

"The movement we've recorded since the March survey is within that normal bound, albeit only just."

ICM Unlimited interviewed a random sample of 1042 adults aged 18+ by telephone on 10-12 April 2015.