People have only 100 days left to use the paper Bank of England £20 and £50 banknotes before they will no longer be in circulation.

The last day they will have legal tender status is 30 September.

People who still have them are therefore asked to use them or deposit them at their bank or a Post Office before the end of that month.

The majority of paper £20 and £50 banknotes in circulation have been replaced with new polymer versions.

However, there are still more than £6bn-worth of paper £20 banknotes featuring economist Adam Smith and in excess of £8bn-worth of paper £50 banknotes featuring entrepreneur Matthew Boulton and engineer James Watt in circulation.

That is more than 300 million individual £20 banknotes, and 160 million paper £50 banknotes.

It is a year since the Bank first issued the polymer £50 banknote featuring Bletchley Park codebreaker and scientist Alan Turing.

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The Turing £50 completed the Bank’s “family” of polymer notes, with all of its denominations – £5, £10, £20 and £50 – now printed on polymer.

‘Check if you have any at home’

The Bank of England’s chief cashier Sarah John said: “Changing our banknotes from paper to polymer over recent years has been an important development, because it makes them more difficult to counterfeit, and means they are more durable.

“The majority of paper banknotes have now been taken out of circulation, but a significant number remain in the economy, so we’re asking you to check if you have any at home.

“For the next 100 days, these can still be used or deposited at your bank in the normal way.”

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