The Bank of England unveiled the design for its new £20 banknote today (October 10), with governor Mark Carney describing it as “our most secure note yet”. The polymer note will include combinations of security features never previously used on a UK banknote, the BoE says, including two windows and two colours of foil. The note depicts JMW Turner, the English painter, who was chosen by Carney to appear on the note after a nominations process that was open to the general public. Turner’s