Indeed, one the main reasons behind a weak pound is the bad state British public finances which undermine sovereign credit quality. In fact, this fiscal year deficit may reach 13.4% of GDP as tax revenues have dropped 11.4% y/y and spending went up 6.9% y/y. Furthermore, in order to repair the big gap in public finances, the next government needs to tighten fiscal policy aggressively.
However, many economists believe a weak pound is essential for economic recovery. Indeed, high fiscal drag will weight on domestic demand which in turn may hamper imports. With weak imports and improving exports (due to low exchange rate) the current account may return to surplus. Eventually, rising exports will boost production, employment and stimulate growth.