What happens in the UK if I post a letter and forget to put a stamp on it? Will it be returned if there is a return address visible, or will the
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Postage stamp - Wikipedia
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25 Used Rainbow Old British Postage Stamps, All Different, All off Paper for Scrapbooking, Stamp Collecting and Crafting - Etsy UK
Royal Mail Swap Out Scheme | The Stamp Forum (TSF)
I see no postage cancellation marks on stamps affixed to a letter I received today, can these stamps be theoretically reused? - Quora
When do old stamps go out of date? Royal Mail deadline and how to swap them - Heart
What Is Happening With Stamps | Save Money On Postage
Royal Mail runs swap out scheme for non-barcoded stamps ahead of July 31 deadline
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Royal Mail U-turn means Christmas stamps CAN still be used after 2023 despite shift to barcode system
