His continuation of light-touch regulation created Britain fiscal problems. He transferred responsibility for banking supervision to the Financial Services Authority who clearly did not do their job, and he failed to realise this on his decade as Chancellor. Perhaps he was too busy opening Europe headquarters of Lehaman Brothers .
He is a tax meddler, who has introduced over 60 new types of tax. In the process creating a even more complicated tax and benefit system. For example, a utterly bureaucratic means-testing process for tax credits that most recipients are unaware of their eligibility.
He created unbalanced growth which was unsustainable and that concealed the unbalanced nature of the growth. By far the biggest contributor of economic growth has been consumers spending which lead to the ridiculous leaves of debit.
Public Sector spending was inefficient because of the control freak top down management. The increased spending on public services from the longest period of sustained economic growth in UK history was dwindled. For example, the increased health spending has hardly improved services because it has been wasted on building polyclinics and extra layers of management rather than more doctors and equipment.