This year we get a new £20 banknote in pretty purple and Adam Smith to boot. I learn that the Bank of England has been issuing notes for 310 years and the first were security documents, handwritten, providing the bearer with evidence that they had a claim on the Bank. Only in the past 50 years has the design of the banknote attempted security. For instance, to prevent counterfeiting, Shakespeare became the first historical character to appear on a banknote in 1970. Other notables include George Stephenson, Charles Dickens, Michael Faraday, Elisabeth Fry, Charles Darwin, Sir Edward Elgar and Sr John Houblon (I know four). The banknotes have a contoured edge on its metallic thread and windowed metallic thread, an ultraviolet feature, a strip of holograms, micro-lettering and a "see-through" register that, when held up to light, produces coloured irregular shapes that combine to form the pound sterling symbol. In 2006 among £38B worth of notes, £8 million worth of counterfeits found, most of them twenties.