Problem is, we aren't even starting to sort out the mess the last lot left. We a still spending 100 billion more than we can afford per annum.
North Sea oil is no longer economic to extract.
Oh, and multiple generations of politicians have promised more than we could ever afford, without levying the right level of taxation to pay for it.
Chickens now fully home to roost.
I honestly don't believe that we will see a budget surplus again. Government borrowing is currently preventing deflation, the debt will get bigger, but to keep the pensions companies happy, a level of budgetary cutting is expected to demonstrate we are not going to do a Greece. Of course the budget cuts will also be used to keep inflation at the "right level". All imho.