There is only one week left to use paper £20 and £50 notes in shops before they are no longer legal tender.
After September 30 the paper notes will essentially become worthless in shops, so for anyone hoping to spend the cash before it goes out of circulation will need to use it soon.
The replacement £20 and £50 notes, made out of polymer, have been in circulation for more than two years now, after being released in February 2020.
The old notes with Adam Smith on the £20 notes and £50 notes with images of Matthew Boulton and James Watt will not be legal tender from next week.
Instead, the new, shinier notes with images of Alan Turing on the £50 and painter J. M. W. Turner on the reverse of the £20 note will be the only legal tender.
Anyone sitting on a wad of paper notes, however, will not lose out.
The notes will not lose their value and can still be taken to banks in exchange for the new polymer notes.
The switch to the synthetic notes was made to make the cash more durable to wear and tear, as well as being harder for criminals to counterfeit.
Banks will not exchange counterfeit notes even if you end up with the cash by accident.
Read More: Just one week left to spend paper £20 and £50 notes