Will David Cameron support the 50% top rate tax?

From LabourList

In the Chancellor’s Budget today, it was announced that the Labour government will increase the top rate of tax on those earning over £150,000 to 50% to help Britain recover from the recession.

David Cameron led a blustery rebuttal of the Budget, but his opposition provided no alternatives other than rhetorical rancour.

So, LabourList asks will David Cameron support Alistair Darling’s new top tax rate?

Yes or no?