No! As long as postage stamps are bought/sold for their face value or less, no VAT is payable. For further details visit https://www.gov.uk/search?q=postage+stamps(https://www.gov.uk/search?q=postage+stamps)

In February 2022, Royal Mail introduced barcodes to stamps for regular ‘everyday’ Definitive stamps. These are the 'Machin' style stamps with just the head of the monarch on them. Non-barcoded definitive stamps are no longer valid for use. However, Special/Comemmorative Stamps with pictures on them, and Christmas Stamps without a barcode, will continue to be valid for postage. We only sell these stamps, which are 100% valid for postage. For further details visit https://www.royalmail.com/sending/barcoded-stamps (https://www.royalmail.com/sending/barcoded-stamps)