In January last year, while shadow chancellor, George Osborne said that the lesson of the credit crunch is that “the economy must never again be allowed to become so structurally unbalanced and poorly prepared for a downturn.” He was referring to our national over-reliance on the banking sector, which had made a few too many dodgy investments in the United States. But the credit crunch reveals that there is something else that our economy is disastrously reliant upon, and the Royal Mail shows that we are only ever becoming more reliant upon it.