I hate to pry, but how much cash have you got on you right now? If the Bank of England is to be believed, the answer is about £1,000. At least, that’s the total value of all notes and coins in the UK divided by every man woman and child in the country. If the contents of my wallet are anything to go by (£7.20 at the time of writing), either I’m doing something wrong or most of that money is somewhere else. Where? The short answer is that no one really knows.

http://www.thetimes.co.uk/tto/opinion/columnists/article4390964.ece