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Why do stamps have barcodes now? New Royal Mail postage stamps explained and if you can still use old stamps
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I think it's about £6': do you know the cost of a first-class stamp? | Consumer affairs | The Guardian
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GOVLAX GROUP 1st Class Stamps (6 Pack) - Self Adhesive UK Letter Postage Stamps for Standard Mail with Barcode - Royal Mail First Class Postage Stamps : Amazon.co.uk: Stationery & Office Supplies
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