After 31st January 2023, regular stamps without a barcode* will no longer be valid and may result in a penalty fee.
Luckily the expiry date is after Christmas, so send a couple more cards or You can either use up these stamps before this deadline or swap them for the new barcoded ones.
After January 31st 2023, stamps with the Queen’s head and ‘1st’ or ‘2nd’ class written on them (as well as first-class large letter and second-class large letter stamps. International tariff stamps and all ‘make-up-value stamps’) will no longer be usable, meaning to use them, you will have to pay a surcharge.
The only exception is ‘special’ commemorative stamps, such as the Doctor Who collection, as these will continue to work until after January 31st 2023.
Royal Mail will let you ‘swap out’ any stamps that are due to expire for free. You will be able to exchange current stamps for barcoded ones for free under Royal Mail’s new ‘Swap Out’ scheme, which opened on March 31st 2022 and will run until March 31st 2023.
This will be via a ‘Swap Out’ form on the Royal Mail website. And You’ll then have to post the no longer valid stamps back.