the rare King Charles III banknotes now in circulation
New banknotes featuring King Charles III are now in circulation - and some could be worth much more than their face value.
His Majesty's portrait will appear on the existing designs of all four banknotes, with no other changes made.
The switch from currency featuring the late Queen Elizabeth II will be gradual and new notes with the King's face on will replace worn-out ones or to meet an increase in demand.
Some of the new Bank of England notes will be worth more than their face value - as collectors seek out rare early versions.
For each prefix, there are 999,000 notes printed and put into circulation - from 000001 to 999000.
Some early versions, including those with codes ending 000001, will not be available. But experts say the following codes should be circulated and most in demand.
£5: CA 01 000003 £10: HB 01 000002£20: EH 01 000002 £50: AJ 01 000003