Bank of England 10s note pence coin was introduced as a replacement for the ten-shilling note. The principal reason for the change was economy: the notes had an average lifetime of about five months whereas coins could last at least fifty years. The series C ten shilling notes ceased to be legal tender on 22 November 1970. In the Isle of Man, both the English and Manx Ten Shilling Notes continued to be legal tender for fifty new pence until 2013. Information taken from Bank of England website. Bank of England 10s note The Bank of England 10s note was a banknote of the pound
Bank of England £20 note Bank of England £20 note The Bank of England £20 note is a banknote of the pound sterling. It is the second highest denomination of banknote issued by the Bank of England. The current cotton note, first issued in 2007, bears the image of Queen Elizabeth II on the obverse and the image of Scottish economist Adam Smith on the reverse. Starting in 2020, the current note will be phased out, to be replaced by a polymer note featuring a portrait of artist J. M. W. Turner in place of Smith. Twenty pound notes were introduced by the Bank of