Martin Lewis has issued a warning to households after Royal Mail announced a major shakeup of its stamp system.
People in the UK will only have until January 31 2023 to use any existing Royal Mail stamps they may have.
But Royal Mail will let you ‘swap out’ these stamps for free, reports the Mirror.
You will be able to exchange current stamps for barcoded ones for free under Royal Mail's new 'Swap Out' scheme, which opens on March 31, 2022 and will run until March 31, 2023.
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This will be via a 'Swap Out' form on the Royal Mail website - you’ll then have to post the no longer valid stamps back.
Martin Lewis, founder of MoneySavingExpert, warned people to use their stamps up to avoid being left out of pocket.
He said: “For years, every time stamps go up in price I’ve suggested people stock up and bulk-buy in advance; as provided the stamp doesn’t have a price on it and instead just says the postage class, it's still valid after the hike. This has been an effective tactic, as a first class letter stamp is now 85p - a decade ago it was just 60p.
“So this change will come as a shock to the many stamp hoarders out there. It’s the first time I can remember you’ve not been able to just lick it and stick it. And we don’t yet know if you’ll still be able to swap the stamps after March 2023, so this is a call to arms (or tongues) to ensure you either use ‘em or swap ‘em.”
The rule change is because Royal Mail is moving to a more secure barcode system, which those stamps don't have on them.
Royal Mail says the barcode on the new stamps will provide “additional security features” that will support its efforts to improve the safety of the post it handles.
Each barcode will have a "digital twin" that can be connected using the Royal Mail app, although the barcodes will not allow users to track their post.
A Royal Mail statement online said: "Definitive stamps are the stamps that will be very familiar to most people. They feature the profile of HM The Queen.
"The barcodes match the stamp colour and sit alongside the main body of the stamp, separated by a simulated perforation line.
"The new barcode is an integral part of the stamp and must remain intact for the stamp to be valid."
