Get ready for the new £20 note which is released on 20/02/2020 by the Bank of England.
The note will be a polymer and will see artist JMW Turner on the back, the new note will have good security all over it which will see a new hologram, move it side to side and you will read Twenty and then Pounds, and many other security features that will make it hard to copy.
Do not worry! the £20 paper note in circulation now is still accepted, however you have six months and the paper £20 note will not be legal tender, although you may have about a week after where some banks will still accept the notes if any are participating at the time.
For further information on the new £20 note click: https://www.bankofengland.co.uk/banknotes/polymer-20-pound-note