The Bank of England has introduced a new look for their notes.
The portrait will be the only change to the existing designs of the notes.
There will be a picture of the King on the front of the new notes.
New notes will be accepted in shops.
Queen Elizabeth was the first monarch to appear on bank notes. Scottish and Northern Irish banks do not have depictions of the monarch on their notes.
The Bank of England has about 4.5 billion notes in circulation.
According to the Bank of England, the new notes would only be printed to replace worn notes or to meet increased demand in order to reduce the impact of the change.
Andrew Bailey is the governor of the Bank of England.
The fifty pence coins have the image of King Charles III on them.
Half of the new coins will be given to post offices to be given to customers.
Coins with the image of the late Queen will still be accepted in stores.
For anyone taking part in a family Christmas quiz this year, it's worth remembering that the reverse side of the Bank of England's current plastic banknote features some of the most famous people of the 20th century.
Cash use has become less frequent as a result of the use of credit cards and the Covid epidemic. The buying power of specific coins has been diminished.
There are still people interested in the images used on cash.
The lowest serial numbers of the new King Charles banknote will be of particular interest to collectors.