The paper £10 note, featuring the face of Charles Darwin, will cease to be legal tender this week.
Once it has been withdrawn from circulation you will no longer be able to spend it in stores, or receive the note as change from retailers.
Find out when the deadline is and when you need to spend or bank yours by.
When will the paper notes go out of circulation?
The Bank of England's paper £10 note featuring Charles Darwin was issued on November 7, 2000.
It will be withdrawn from circulation from midnight on Thursday March, 1 . This means it will no longer be legal tender and you will not be able to spend your paper notes.
You can still cash your notes at the bank before this deadline, and some will accept them for an extended period after the date has passed.
Check with your bank if they will extend the deadline, the dates will differ.
You can exchange notes which have been withdrawn from circulation, in person or by post, to the Bank of England, see more information here .
Why was the paper note replaced?
The polymer tenner entered circulation on September, 14 2017. It features Jane Austen on it, and came one year after the polymer £5 note was released.
Production of the note began in August last year, and in three years time it will be followed by a new polymer £20 note which will feature the British painter JMW Turner.
The Bank of England printed 10 billion of the polymer tenners. The material is a thin, flexible plastic which is environmentally friendly, in comparison to paper, due to its durability.
Polymer notes are believed to have a lower carbon footprint than paper ones, according to The Carbon Trust.
The carbon footprint of a £10 polymer banknote is 8 per cent lower than a £10 paper one.
What are the design features of the polymer £10 note?
The large number 10 and £ symbol in the top-left hand corner of the front of the note help you easily see its value. There is also a slightly smaller number 10 in the top-right corner.
For the partially sighted, it has a densely coloured orange diamond on the front.
A unique serial number is printed horizontally and vertically on the back of the note. The horizontal numbers is in the bottom right corner. It is made up of multi-coloured letters and numbers, which increase in height from left to right. The vertical number runs down the left-hand side and the numbers and letters are the same height and colour.
The international copyright symbol is included on the front and the back of the £10 note, around the edge of the watermark area.