You have until March to spend your old £10 notes before they stop being accepted as legal tender.
The Bank of England has revealed the cut-off date as March 1, 2018, following the recent rollout of the new plastic tenner.
Old notes can still be spent ahead of this date and you can exchange them at the Bank once this point has passed.
The Bank introduced the paper £10 note featuring Charles Darwin in 2000, and it rolled out the new Jane Austen notes in September.
Around 55% of the £10 notes in circulation are made from polymer, while 359 million are paper.
The new tenner is the first Bank of England note with a tactile feature to help blind and partially-sighted users.
Like the new fiver already in circulation, the new £10 banknote is made from polymer, which is more durable and is expected to last five years.
The transition to polymer has sparked controversy after the Bank confirmed that an ‘extremely small amount’ of tallow, or animal fat, was used to produce polymer pellets, which were part of the production process for creating the notes.
People who still have paper £5 notes can exchange them at the Bank of England in person, or via post by completing a form and sending the note to Department NEX, Bank of England, Threadneedle Street, London, EC2R 8AH.
Old pound coins can no longer be spent, but can be donated to charity or deposited into customer bank accounts.