Bank of England 10s note longer and narrower, and were the first ten-shilling notes to feature a portrait of Queen Elizabeth II on the front. The reverse design incorporated the logo of the Bank of England. In the late 1960s it was decided that future banknotes should feature a British historical figure on the reverse. The first such note was the series D £20 note, first issued in 1970, featuring William Shakespeare. A design for a ten-shilling note featuring Walter Raleigh on the reverse was approved in 1964 but was never issued. Instead, in 1969, as part of the process of decimalisation, a new fifty
Bank of England £20 note as an illustration of workers in a pin factory. The note features a number of security features in addition to the metallic thread: these include raised print, a watermark, microlettering, a holographic strip, a see-through register, and a colourful pattern which only appears under ultraviolet light. In September 2015 the Bank of England announced that the next £20 note will be printed on polymer, rather than cotton paper. This was followed by an announcement in April 2016 that Adam Smith will be replaced by artist J. M. W. Turner on the next £20 note, which will enter circulation in 2020.