...there is nothing that cannot be explained as a (long overdue) correction of a persistent overvaluation of sterling - a misalignment that has biased the economic playing field against industries, both exporting and import competing, that would have had a fairer crack of the whip at a more reasonable exchange rate.

One interpretation of the drivers of this persistent overvaluation would be a Dutch disease story, where the role of the natural resource sector in the standard version of the Dutch disease is taking by the UK banking sector.  In this interpretation, a long financial industry bubble in the UK has driven up the real exchange rate in the whole economy and crowded out other sectors producing internationally tradable commodities.  The recent sharp depreciation of sterling corrects this long-standing anomaly.