The Bank of England's first polymer note, the new 5 pound notes featuring Sir Winston Churchill, enters circulation, Sept. 13, 2016. The new five pound notes, which feature World War Two leader Winston Churchill and Queen Elizabeth, will trickle through to cash machines and banks in England and Wales over the coming weeks. They are made of a thin and flexible polymer, or plastic, which is cleaner and harder to forge than current cotton-based notes according to the central bank. (Photo/Agencies)