The Royal Mail shares frenzy has capped a slew of economic news that suggests the UK is enjoying a fully fledged recovery – and one that is not confined to the swankiest postcodes of the capital. Many ordinary Britons may not yet feel it, but the economy is officially warming up. Not only has the International Monetary Fund upgraded its forecasts, predicting a growth of 1.4 per cent this year (double the estimate it put out in April), but the Office for Budget Responsibility has said that the Government’s austerity programme – which the Labour Party said would stifle economic growth – has not affected the pace of recovery.