Deadline is 31 January, although there will then be six-month grace period with such post still delivered
Royal Mail demonetising all non-barcode Machin (+ other) stamps
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Royal Mail urges people to get rid of old stamps before huge
Royal Mail U-turn means Christmas stamps CAN still be used after
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Existing Royal Mail 'everyday' stamps will be unusable after
Royal Mail: Final day for people to use non-barcoded stamps
Royal Mail blasted over plan to make old stamps useless in three
Two-week warning issued to anybody who owns a Royal Mail stamp
Royal Mail warning over stamp changes which could see customers
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